/* -- Theme Variables -- */
:root {
  --bg: #fff7ed;
  --bg-card: #ffffff;
  --bg-alt: #f1f5f9;
  --bg-dark: #f8fafc;
  --text: #1e293b;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --border-hover: #cbd5e1;
  --accent: #f59e0b;
  --accent-red: #ef4444;
  --accent-blue: #3b82f6;
  --accent-green: #22c55e;
  --accent-purple: #8b5cf6;
  --nav-bg: #ffffff;
  --nav-active-bg: linear-gradient(135deg, #fbbf24, #f59e0b);
  --nav-active-text: #1e293b;
  --nav-hover: rgba(251,191,36,0.1);
  --input-bg: #ffffff;
  --input-border: #e2e8f0;
  --app-header-bg: #ffffff;
  --app-content-bg: #fff7ed;
  --shadow: rgba(0,0,0,0.06);
  --overlay-bg: rgba(0,0,0,0.4);
}
body.dark-mode {
  --bg: #0a0e1a;
  --bg-card: #1e293b;
  --bg-alt: #0f172a;
  --bg-dark: #0a0e1a;
  --text: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: #334155;
  --border-hover: #475569;
  --accent: #f59e0b;
  --accent-red: #ef4444;
  --accent-blue: #3b82f6;
  --accent-green: #22c55e;
  --accent-purple: #8b5cf6;
  --nav-bg: linear-gradient(180deg, #0f172a, #1e293b);
  --nav-active-bg: linear-gradient(135deg, #3b82f6, #6366f1);
  --nav-active-text: #ffffff;
  --nav-hover: rgba(59,130,246,0.15);
  --input-bg: #0f172a;
  --input-border: #334155;
  --app-header-bg: #0a0e1a;
  --app-content-bg: #0a0e1a;
  --shadow: rgba(0,0,0,0.3);
  --overlay-bg: rgba(0,0,0,0.7);
}

/* -- Core -- */
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; overflow-x: hidden; }
a { color: #60a5fa; text-decoration: none; }
a:hover { color: #93c5fd; }
.hidden { display: none !important; }

/* ── Landing Page Redesign ── */
.landing { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; }
.landing-header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(10,14,26,0.85); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(51,65,85,0.4); }
.landing-header-inner { max-width: 1100px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; padding: 12px 24px; }
.landing-logo { display: flex; align-items: center; gap: 8px; }
.landing-logo-icon { font-size: 24px; }
.landing-logo-text { font-size: 18px; font-weight: 700; color: var(--text); letter-spacing: -0.3px; }
.landing-header-nav { display: flex; align-items: center; gap: 16px; }
.landing-header-nav a { color: var(--text-secondary); font-size: 14px; cursor: pointer; transition: color 0.2s; }
.landing-header-nav a:hover { color: var(--text); }
.landing-btn { border: none; cursor: pointer; font-size: 14px; font-weight: 600; padding: 8px 20px; border-radius: 8px; transition: all 0.2s; }
.landing-btn-primary { background: linear-gradient(135deg, #3b82f6, #8b5cf6); color: white; }
.landing-btn-primary:hover { transform: translateY(-1px); box-shadow: 0 4px 20px rgba(59,130,246,0.3); }
.landing-btn-outline { background: transparent; color: var(--text); border: 1px solid #475569; }
.landing-btn-outline:hover { border-color: #3b82f6; color: #3b82f6; }
.landing-btn-ghost { background: transparent; color: var(--text-secondary); }
.landing-btn-ghost:hover { color: var(--text); }
.landing-btn-large { padding: 12px 32px; font-size: 16px; }
.landing-hero { position: relative; min-height: 85vh; display: flex; align-items: center; justify-content: center; overflow: hidden; padding: 120px 24px 60px; }
.landing-hero-bg { position: absolute; inset: 0; background: radial-gradient(ellipse 80% 60% at 50% 40%, rgba(59,130,246,0.12) 0%, transparent 60%), radial-gradient(ellipse 60% 50% at 30% 60%, rgba(139,92,246,0.08) 0%, transparent 50%), radial-gradient(ellipse 60% 50% at 70% 60%, rgba(34,197,94,0.06) 0%, transparent 50%); pointer-events: none; }
.landing-hero-content { position: relative; z-index: 1; text-align: center; max-width: 720px; }
.landing-badge { display: inline-block; background: rgba(59,130,246,0.15); color: #60a5fa; border: 1px solid rgba(59,130,246,0.3); padding: 6px 16px; border-radius: 20px; font-size: 13px; font-weight: 600; margin-bottom: 20px; }
.landing-title { font-size: clamp(36px, 6vw, 56px); font-weight: 800; line-height: 1.1; color: var(--text); margin-bottom: 16px; letter-spacing: -1px; }
.gradient-text { background: linear-gradient(135deg, #60a5fa, #a78bfa, #34d399); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.landing-subtitle { font-size: 17px; line-height: 1.6; color: var(--text-muted); max-width: 580px; margin: 0 auto 28px; }
.landing-hero-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 40px; }
.landing-hero-stats { display: flex; gap: 32px; justify-content: center; flex-wrap: wrap; }
.hero-stat { text-align: center; }
.hero-stat-num { display: block; font-size: 28px; font-weight: 800; color: var(--text); }
.hero-stat-label { font-size: 13px; color: var(--text-muted); }

/* Sections */
.landing-section { padding: 80px 24px; max-width: 1100px; margin: 0 auto; }
.section-title { font-size: clamp(24px, 3.5vw, 36px); font-weight: 700; text-align: center; color: var(--text); margin-bottom: 8px; }
.section-subtitle { font-size: 16px; color: var(--text-muted); text-align: center; max-width: 600px; margin: 0 auto 40px; }

/* HSK Path */
.hsk-path-container { display: flex; align-items: center; justify-content: center; gap: 6px; flex-wrap: wrap; padding: 20px 0; }
.hsk-path-step { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; text-align: center; min-width: 120px; transition: all 0.2s; }
.hsk-path-step:hover { border-color: var(--hsk-color); transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.3); }
.hsk-path-num { font-size: 18px; font-weight: 700; color: var(--hsk-color); }
.hsk-path-words { font-size: 11px; color: var(--text-muted); margin: 2px 0; }
.hsk-path-desc { font-size: 11px; color: var(--text-secondary); line-height: 1.3; }
.hsk-path-arrow { font-size: 20px; color: var(--text-muted); }

/* Feature Cards */
.features-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.feature-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 14px; padding: 24px; transition: all 0.2s; }
.feature-card:hover { border-color: #3b82f6; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }
.feature-icon { font-size: 32px; margin-bottom: 12px; }
.feature-card h3 { font-size: 16px; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.feature-card p { font-size: 13px; color: var(--text-muted); line-height: 1.5; }

/* Stats */
.landing-stats-section { padding: 48px 24px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; max-width: 600px; margin: 0 auto; }
.stat-card { text-align: center; background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.stat-num { font-size: 36px; font-weight: 800; color: var(--text); }
.stat-label { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* CTA */
.landing-cta-section { text-align: center; padding: 64px 24px; }

/* Footer */
.landing-footer { border-top: 1px solid var(--border); padding: 24px; }
.landing-footer-inner { max-width: 1100px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--text-muted); }
.landing-footer-brand { font-weight: 600; color: var(--text-secondary); }
.landing-footer-links { display: flex; gap: 8px; }

/* -- App Shell -- */
.app { max-width: 1200px; margin: 0 auto; padding: 16px; }
.app-shell { display: flex; flex-direction: column; height: 100vh; max-height: 100vh; position: relative; }
.app-content { flex:1;overflow:hidden; }
.app-nav { display:flex;gap:2px;overflow-x:auto;padding:8px 0;border-top: 1px solid var(--border);-webkit-overflow-scrolling:touch; }
.app-nav::-webkit-scrollbar { height:2px; }
.app-nav::-webkit-scrollbar-thumb { background: var(--border);border-radius:2px; }
.page { display:none;height:100%;overflow-y:auto; }
.page.active { display:block; }
@media (max-width:768px) { 
  .app { padding:8px; } 
  .app-nav { gap:1px; }
  .nav-item { padding:6px 8px !important; }
  .nav-label { display:none; }
  .nav-icon { margin-right:0 !important; }
  .app-brand span { display:none; }
  .app-header { padding:8px 12px !important; }
}

.app-header { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px 8px; gap: 8px; flex-shrink: 0; }
.app-brand { display: flex; align-items: center; gap: 8px; font-size: 16px; font-weight: 700; color: var(--text); }
.app-brand-icon { width: 32px; height: 32px; background: linear-gradient(135deg, #f59e0b, #ef4444); border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 16px; }
.app-header-center { display: flex; align-items: center; justify-content: center; flex: 1; }
.app-speed-control { display: flex; align-items: center; gap: 4px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 20px; padding: 2px 10px; }
.app-speed-control .speed-icon { font-size: 13px; }
.app-speed-slider { width: 64px; height: 4px; accent-color: #22c55e; cursor: pointer; }
.app-speed-control .speed-label { font-size: 11px; color: var(--text-secondary); min-width: 28px; text-align: center; font-weight: 600; }
.app-header-right { display: flex; align-items: center; gap: 6px; }
.plan-badge { font-size: 10px; padding: 2px 8px; border-radius: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.plan-badge.free { background: var(--bg-card); color: var(--text-muted); border: 1px solid var(--border); }
.plan-badge.premium { background: rgba(251,191,36,0.15); color: #fbbf24; border: 1px solid rgba(251,191,36,0.3); }
.plan-badge.admin { background: rgba(139,92,246,0.15); color: #a78bfa; border: 1px solid rgba(139,92,246,0.3); }

/* -- Navigation -- */
.app-nav { display: flex; gap: 6px; padding: 10px 12px; background: linear-gradient(180deg, #fff, #f8fafc); border-bottom: 2px solid var(--border); flex-shrink: 0; overflow-x: auto; align-items: center; -webkit-overflow-scrolling: touch; }
body.dark-mode .app-nav { background: linear-gradient(180deg, #0f172a, #1e293b); }
.nav-item { display: flex; align-items: center; gap: 6px; padding: 10px 16px; border-radius: 12px; font-size: 13px; font-weight: 700; cursor: pointer; white-space: nowrap; background: rgba(0,0,0,0.03); color: var(--text-secondary); border: 1px solid rgba(0,0,0,0.06); transition: all 0.2s; user-select: none; -webkit-user-select: none; letter-spacing: 0.02em; }
body.dark-mode .nav-item { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.06); }
.nav-item:hover { color: var(--text); background: var(--nav-hover); border-color: rgba(59,130,246,0.25); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(59,130,246,0.15); }
.nav-item.active { background: var(--nav-active-bg); color: var(--nav-active-text); border-color: transparent; box-shadow: 0 4px 16px rgba(59,130,246,0.35); transform: translateY(-1px); }
.nav-item .nav-icon { font-size: 16px; }
.nav-spacer { flex: 1; }
.nav-item.nav-admin { color: #a78bfa; border-color: rgba(167,139,250,0.1); }
.nav-item.nav-admin:hover { background: rgba(167,139,250,0.12); border-color: rgba(167,139,250,0.25); }
.nav-item.nav-admin.active { background: linear-gradient(135deg, #7c3aed, #6d28d9); color: white; border-color: transparent; box-shadow: 0 4px 16px rgba(124,58,237,0.35); }

/* -- App Content -- */
.app-content { flex: 1; overflow: hidden; position: relative; }
.page { display: none; height: 100%; overflow-y: auto; }
.admin-wrap { overflow-y: auto; height: 100%; }
.admin-user-list { overflow-x: auto; }
.admin-table-wrap { overflow-x: auto; max-width: 100%; }
.page.active { display: flex; flex-direction: column; height: 100%; }

/* -- Sub-page header (used by tone trainer, etc.) -- */
.sub-page-header { flex-shrink: 0; padding: 16px 20px 8px; }
.sub-page-title { font-size: 20px; font-weight: 800; color: var(--text); margin-bottom: 2px; }
.sub-page-desc { font-size: 13px; color: var(--text-muted); }

/* -- Welcome Banner -- */
.welcome-banner { background: linear-gradient(135deg, #1e293b, #1a1f35); border: 1px solid var(--border); border-radius: 14px; padding: 20px 16px; margin: 12px; text-align: center; }
.welcome-banner h2 { font-size: 18px; margin-bottom: 4px; color: var(--text); }
.welcome-banner p { font-size: 13px; color: var(--text-muted); margin-bottom: 14px; }
.welcome-stats { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.welcome-stat { background: var(--bg-alt); border: 1px solid var(--border); border-radius: 10px; padding: 10px 14px; min-width: 70px; text-align: center; }
.welcome-stat-num { font-size: 20px; font-weight: 700; color: #60a5fa; }
.welcome-stat-label { font-size: 10px; color: var(--text-muted); margin-top: 2px; text-transform: uppercase; letter-spacing: 0.5px; }

/* -- Onboarding Wizard -- */
.onboarding-overlay { position: fixed; inset: 0; z-index: 1000; background: rgba(0,0,0,0.7); display: flex; align-items: center; justify-content: center; backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); }
.onboarding-modal { background: var(--bg-card); border: 1px solid var(--border); border-radius: 20px; padding: 32px 24px; max-width: 400px; width: 90%; text-align: center; animation: popIn 0.4s cubic-bezier(0.34,1.56,0.64,1); }
@keyframes popIn { from { opacity: 0; transform: scale(0.85) translateY(20px); } to { opacity: 1; transform: scale(1) translateY(0); } }
.onboarding-icon { font-size: 48px; margin-bottom: 12px; }
.onboarding-modal h2 { font-size: 20px; margin-bottom: 8px; color: var(--text); }
.onboarding-modal p { font-size: 14px; color: var(--text-secondary); margin-bottom: 20px; line-height: 1.5; }
.onboarding-dots { display: flex; gap: 6px; justify-content: center; margin-bottom: 20px; }
.onboarding-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--border); transition: all 0.3s; }
.onboarding-dot.active { background: #1a4a8a; width: 24px; border-radius: 4px; }
.onboarding-step { display: none; }
.onboarding-step.active { display: block; }
.onboarding-btn { padding: 10px 28px; border-radius: 12px; border: none; font-size: 14px; font-weight: 600; cursor: pointer; transition: all 0.15s; background: #1a4a8a; color: white; }
.onboarding-btn:hover { background: #2563eb; transform: translateY(-1px); }
.onboarding-opt-out { margin-top: 12px; font-size: 12px; color: #475569; cursor: pointer; }
.onboarding-opt-out:hover { color: var(--text-muted); }

/* -- Admin Panel -- */
.admin-wrap { padding: 12px; max-width: 700px; margin: 0 auto; }
.admin-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.admin-header h2 { font-size: 18px; color: #a78bfa; }
.admin-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 16px; }
.admin-stat-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 14px; text-align: center; }
.admin-stat-num { font-size: 28px; font-weight: 700; color: #a78bfa; }
.admin-stat-label { font-size: 11px; color: var(--text-muted); margin-top: 2px; text-transform: uppercase; letter-spacing: 0.5px; }
.admin-search { width: 100%; padding: 10px 14px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; color: var(--text); font-size: 13px; margin-bottom: 12px; outline: none; transition: border-color 0.15s; }
.admin-search:focus { border-color: #7c3aed; }
.admin-user-list { display: flex; flex-direction: column; gap: 6px; }
.admin-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.admin-table thead th { text-align: left; padding: 8px 10px; color: var(--text-muted); font-weight: 600; font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; border-bottom: 1px solid var(--border); white-space: nowrap; }
.admin-table tbody tr { transition: background 0.15s; }
.admin-table tbody tr:hover { background: var(--bg-card); }
.admin-table tbody td { padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.admin-table tbody td:first-child { width: 36px; padding-right: 4px; }
.admin-td-name { color: var(--text); font-weight: 500; white-space: nowrap; }
.admin-td-email { color: var(--text-secondary); }
.admin-td-num { text-align: center; color: var(--text-muted); }
.admin-td-date { color: #475569; white-space: nowrap; }
.admin-td-actions { white-space: nowrap; text-align: right; }
.admin-user-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 12px; display: flex; align-items: center; gap: 10px; }
.admin-user-avatar { width: 36px; height: 36px; border-radius: 50%; background: var(--border); display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 600; color: var(--text-secondary); flex-shrink: 0; }
.admin-user-avatar.admin-avatar { background: rgba(139,92,246,0.2); color: #a78bfa; }
.admin-user-info { flex: 1; min-width: 0; }
.admin-user-name { font-size: 13px; font-weight: 600; color: var(--text); }
.admin-user-email { font-size: 11px; color: var(--text-muted); }
.admin-user-meta { font-size: 11px; color: #475569; margin-top: 2px; display: flex; gap: 8px; flex-wrap: wrap; }
.admin-user-meta span { display: flex; align-items: center; gap: 3px; }
.admin-user-badge { font-size: 9px; padding: 2px 6px; border-radius: 6px; font-weight: 600; text-transform: uppercase; }
.admin-user-badge.verified { background: rgba(34,197,94,0.15); color: #22c55e; }
.admin-user-badge.unverified { background: rgba(239,68,68,0.15); color: #ef4444; }
.admin-user-badge.admin-badge { background: rgba(139,92,246,0.15); color: #a78bfa; }
.admin-user-actions { display: flex; gap: 4px; flex-shrink: 0; }
.admin-action-btn { padding: 5px 8px; border-radius: 6px; border: none; font-size: 11px; cursor: pointer; transition: all 0.15s; background: var(--border); color: var(--text-secondary); }
.admin-action-btn:hover { background: #475569; color: var(--text); }
.admin-action-btn.danger:hover { background: rgba(239,68,68,0.2); color: #ef4444; }
.admin-loading { text-align: center; color: var(--text-muted); padding: 40px; font-size: 14px; }

/* -- Record / Level (from new styles) -- */
.talk-mic-area { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.record-btn { width: 48px; height: 48px; border-radius: 50%; border: 2px solid #3b82f6; background: var(--bg-alt); color: #3b82f6; font-size: 18px; cursor: pointer; transition: all 0.15s; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.record-btn:hover { background: var(--bg-card); border-color: #60a5fa; color: #60a5fa; }
.record-btn.recording { border-color: #ef4444; color: #ef4444; background: #3b0a0a; animation: pulse 1s infinite; }
.record-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(220,38,38,0.4); } 50% { box-shadow: 0 0 0 12px rgba(220,38,38,0); } }
.record-status { font-size: 12px; color: var(--text-muted); text-align: center; min-height: 16px; }
.level-bar { width: 120px; height: 3px; background: var(--bg-card); border-radius: 2px; overflow: hidden; }
.level-fill { height: 100%; background: linear-gradient(90deg, #22c55e, #3b82f6); border-radius: 2px; transition: width 0.08s; }

/* -- Landing Page -- */
.landing { min-height: 100vh; background: linear-gradient(160deg, #fff9f0 0%, #fef3ff 40%, #f0f7ff 100%); font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; }
.landing::before { content: ''; position: fixed; inset: 0; background: radial-gradient(circle at 15% 20%, rgba(251,191,36,0.18) 0%, transparent 35%), radial-gradient(circle at 85% 10%, rgba(244,114,182,0.18) 0%, transparent 30%), radial-gradient(circle at 70% 80%, rgba(99,102,241,0.14) 0%, transparent 35%), radial-gradient(circle at 10% 75%, rgba(34,197,94,0.14) 0%, transparent 30%); pointer-events: none; z-index: 0; }
.landing-hero { text-align: center; padding: 64px 24px 48px; position: relative; z-index: 1; }
.landing-logo-wrap { display: inline-flex; align-items: center; gap: 14px; margin-bottom: 32px; animation: popIn 0.6s cubic-bezier(0.34,1.56,0.64,1) both; }
.landing-logo-icon { width: 72px; height: 72px; background: linear-gradient(135deg, #f59e0b, #ef4444, #ec4899); border-radius: 20px; display: flex; align-items: center; justify-content: center; font-size: 32px; color: white; box-shadow: 0 8px 32px rgba(239,68,68,0.25); }
.landing-logo-text { text-align: left; }
.brand { font-size: 28px; font-weight: 800; background: linear-gradient(135deg, #1e293b, #334155); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.tagline { font-size: 13px; color: var(--text-muted); margin-top: 2px; }
.landing-headline { font-size: 32px; font-weight: 800; color: var(--text); margin-bottom: 12px; line-height: 1.2; }
.subtitle { font-size: 15px; color: #475569; max-width: 400px; margin: 0 auto 28px; line-height: 1.6; }
.cta-group { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.cta-btn { padding: 12px 28px; border-radius: 12px; border: none; font-size: 15px; font-weight: 600; cursor: pointer; transition: all 0.2s; }
.cta-btn.primary { background: linear-gradient(135deg, #f59e0b, #ef4444); color: white; box-shadow: 0 4px 20px rgba(239,68,68,0.3); }
.cta-btn.primary:hover { transform: translateY(-2px); box-shadow: 0 6px 28px rgba(239,68,68,0.4); }
.cta-btn.secondary { background: white; color: #1e293b; border: 1px solid #e2e8f0; }
.cta-btn.secondary:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.06); }
.landing-stats { display: flex; justify-content: center; gap: 24px; margin-top: 32px; }
.landing-stat { text-align: center; }
.stat-num { font-size: 24px; font-weight: 800; background: linear-gradient(135deg, #f59e0b, #ef4444); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-label { font-size: 11px; color: var(--text-muted); margin-top: 2px; text-transform: uppercase; letter-spacing: 0.5px; }
.landing-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px; padding: 0 20px 40px; max-width: 700px; margin: 0 auto; position: relative; z-index: 1; }
.landing-feat { background: white; border: 1px solid #e2e8f0; border-radius: 14px; padding: 16px 12px; text-align: center; transition: all 0.2s; }
.landing-feat:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.06); transform: translateY(-1px); }
.landing-feat .icon { font-size: 28px; margin-bottom: 8px; }
.landing-feat h3 { font-size: 12px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.landing-feat p { font-size: 11px; color: var(--text-muted); line-height: 1.4; }
.landing-footer { text-align: center; font-size: 11px; color: var(--text-secondary); padding: 24px; }

/* -- Auth Overlay -- */
.auth-overlay { position: fixed; inset: 0; z-index: 500; background: rgba(0,0,0,0.6); display: flex; align-items: center; justify-content: center; backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.auth-box { background: var(--bg-card); border: 1px solid var(--border); border-radius: 20px; padding: 32px 24px; max-width: 380px; width: 90%; animation: popIn 0.35s cubic-bezier(0.34,1.56,0.64,1); }
.auth-logo { text-align: center; margin-bottom: 24px; }
.auth-logo-icon { width: 56px; height: 56px; background: linear-gradient(135deg, #f59e0b, #ef4444); border-radius: 14px; display: inline-flex; align-items: center; justify-content: center; font-size: 28px; margin-bottom: 8px; }
.auth-logo-name { font-size: 18px; font-weight: 700; color: var(--text); }
.auth-field { width: 100%; padding: 11px 14px; background: var(--bg-alt); border: 1px solid var(--border); border-radius: 10px; color: var(--text); font-size: 14px; outline: none; transition: border-color 0.15s; margin-bottom: 10px; }
.auth-field:focus { border-color: #3b82f6; }
.auth-btn { width: 100%; padding: 11px; border-radius: 10px; border: none; font-size: 14px; font-weight: 600; cursor: pointer; background: #1a4a8a; color: white; transition: all 0.15s; }
.auth-btn:hover { background: #2563eb; }
.auth-divider { text-align: center; color: #475569; font-size: 12px; margin: 14px 0; position: relative; }
.auth-divider::before, .auth-divider::after { content: ''; position: absolute; top: 50%; width: 38%; height: 1px; background: var(--bg-card); }
.auth-divider::before { left: 0; }
.auth-divider::after { right: 0; }
.auth-toggle-link { text-align: center; margin-top: 14px; font-size: 13px; color: #60a5fa; cursor: pointer; }
.auth-toggle-link:hover { color: #93c5fd; }
.auth-error { text-align: center; color: #ef4444; font-size: 12px; margin-top: 10px; min-height: 18px; }
.auth-verify-banner { text-align: center; font-size: 12px; color: #fbbf24; margin-top: 10px; padding: 8px; background: rgba(251,191,36,0.1); border-radius: 8px; }
.auth-msg { text-align: center; font-size: 13px; color: var(--text-secondary); margin-top: 10px; min-height: 18px; }
.auth-forgot-link { text-align: right; font-size: 12px; color: var(--text-muted); cursor: pointer; margin-top: -6px; margin-bottom: 10px; }
.auth-forgot-link:hover { color: var(--text-secondary); }
.btn { padding: 8px 16px; border-radius: 10px; border: none; font-size: 13px; font-weight: 600; cursor: pointer; transition: all 0.15s; background: #1a4a8a; color: white; }
.btn:hover { background: #2563eb; transform: translateY(-1px); }
.btn-sm { padding: 6px 12px; border-radius: 8px; border: none; font-size: 12px; cursor: pointer; transition: all 0.15s; background: var(--border); color: var(--text-secondary); }
.btn-sm:hover { background: #475569; color: var(--text); }
.btn-danger { background: #ef4444; color: white; }
.btn-danger:hover { background: #dc2626; }

/* Responsive */
@media (max-width: 500px) {
  .app { padding: 0; }
    .app-nav { padding: 8px 8px; gap: 4px; }
  .nav-item { padding: 8px 10px; font-size: 12px; gap: 4px; }
  .nav-item .nav-label { display: none; }
  .nav-item .nav-icon { font-size: 18px; }
  .nav-item.active { transform: none; }
}

/* -- Original Component Styles -- */




/* Landing */
.landing { min-height: 100vh; }

.landing-hero::before { content:''; position:absolute; top:-100px; left:50%; transform:translateX(-50%); width:600px; height:600px; background:radial-gradient(circle, rgba(59,130,246,0.15) 0%, transparent 70%); pointer-events:none; }
.landing-hero .logo-img { width: 180px; height: auto; margin-bottom: 16px; display: block; margin-left: auto; margin-right: auto; }
.landing-hero .subtitle { font-size: 20px; color: var(--text-secondary); max-width: 600px; margin: 0 auto 32px; line-height: 1.6; }
.landing-hero .cta-group { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.landing-btn { padding: 14px 32px; border-radius: 12px; font-size: 16px; font-weight: 600; cursor: pointer; border: none; transition: all 0.2s; }
.landing-btn.primary { background: linear-gradient(135deg, #3b82f6, #8b5cf6); color: white; box-shadow: 0 4px 20px rgba(59,130,246,0.4); }
.landing-btn.primary:hover { transform: translateY(-2px); box-shadow: 0 6px 30px rgba(59,130,246,0.6); }
.landing-btn.secondary { background: rgba(255,255,255,0.08); color: var(--text); border: 1px solid var(--border); }
.landing-btn.secondary:hover { background: rgba(255,255,255,0.15); }
.landing-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 16px; max-width: 1000px; margin: 0 auto; padding: 20px; }
.landing-feat { background: linear-gradient(135deg, #f8fafc, #f1f5f9); border: 1px solid var(--border); border-radius: 16px; padding: 24px; text-align: center; transition: transform 0.2s, border-color 0.2s; }
.landing-feat:hover { transform: translateY(-4px); border-color: #3b82f6; }
.landing-feat .icon { font-size: 36px; margin-bottom: 12px; }
.landing-feat h3 { font-size: 17px; margin-bottom: 8px; color: var(--text); }
.landing-feat p { font-size: 13px; color: var(--text-secondary); line-height: 1.5; }

/* Auth modal */


.auth-box input { width: 100%; padding: 10px; margin: 8px 0; border: 1px solid #475569; border-radius: 8px; background: var(--bg-alt); color: var(--text); }
.auth-box button { width: 100%; padding: 12px; background: linear-gradient(135deg, #3b82f6, #8b5cf6); border: none; border-radius: 8px; color: white; font-size: 16px; cursor: pointer; margin-top: 12px; font-weight: 600; }
.auth-box .toggle { color: #3b82f6; cursor: pointer; font-size: 14px; text-align: center; margin-top: 12px; }
/* Existing app styles */
/* App shell */


.app-header .logo-img { height: 28px; width: auto; vertical-align: middle; }
.app-header .plan { font-size: 11px; color: var(--text-secondary); background: var(--bg-card); padding: 3px 8px; border-radius: 10px; white-space: nowrap; }
.app-header .spacer { flex: 1; }
.logout-btn { display: flex; align-items: center; gap: 6px; padding: 6px 12px; background: rgba(239,68,68,0.08); border: 1px solid rgba(239,68,68,0.25); border-radius: 10px; color: #f87171; font-size: 12px; font-weight: 600; cursor: pointer; transition: all 0.15s; white-space: nowrap; }
.logout-btn:hover { background: rgba(239,68,68,0.18); border-color: #ef4444; color: #fca5a5; }
.logout-btn svg { flex-shrink: 0; }










/* Talk page */
.talk-wrap { display: flex; flex-direction: column; flex: 1; overflow: hidden; }
.talk-bar { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 8px 14px; border-bottom: 1px solid var(--border); flex-shrink: 0; flex-wrap: wrap; background: linear-gradient(135deg, #f8fafc, #f1f5f9); }
.talk-bar-title { display: flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 700; color: var(--text); white-space: nowrap; }
.talk-bar-title .talk-bar-icon { font-size: 16px; }
.talk-bar-controls { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.talk-select-diff { background: var(--bg-card); color: var(--text-secondary); border: 1px solid var(--border); border-radius: 16px; padding: 4px 10px; font-size: 11px; font-weight: 600; cursor: pointer; outline: none; }
.talk-select-diff:focus { border-color: #3b82f6; }
.talk-toggle-group { display: flex; gap: 2px; background: var(--bg-alt); border: 1px solid var(--border); border-radius: 14px; padding: 2px; }
.talk-toggle-label { display: flex; align-items: center; gap: 3px; padding: 3px 7px; border-radius: 12px; cursor: pointer; transition: background 0.15s; font-size: 10px; color: var(--text-muted); white-space: nowrap; }
.talk-toggle-label:hover { background: var(--bg-card); }
.talk-toggle-label input[type=checkbox] { display: none; }
.talk-toggle-label:has(input:checked) { background: var(--bg-card); color: #60a5fa; }
.talk-toggle-text { font-size: 11px; font-weight: 700; letter-spacing: 0.3px; }
.talk-speed-wrap { display: flex; align-items: center; gap: 4px; background: var(--bg-alt); border: 1px solid var(--border); border-radius: 14px; padding: 3px 8px; }
.talk-speed-turtle { font-size: 10px; opacity: 0.6; }
.talk-speed-wrap input[type=range] { width: 50px; height: 3px; accent-color: #3b82f6; cursor: pointer; }
.talk-speed-value { font-size: 10px; color: var(--text-muted); min-width: 22px; text-align: center; font-weight: 600; }
.talk-new-btn { padding: 4px 12px; border-radius: 14px; border: 1px solid var(--border); background: transparent; color: var(--text-secondary); font-size: 11px; font-weight: 600; cursor: pointer; transition: all 0.15s; }
.talk-new-btn:hover { border-color: #3b82f6; color: #60a5fa; background: rgba(59,130,246,0.08); }
.talk-scroll-area { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 0; min-height: 0; }
.talk-messages { padding: 8px 16px; display: flex; flex-direction: column; gap: 10px; }
.msg { max-width: 85%; padding: 10px 14px; border-radius: 16px; line-height: 1.5; animation: fadeUp 0.25s; }
@keyframes fadeUp { from{opacity:0;transform:translateY(8px);} to{opacity:1;transform:translateY(0);} }
.msg.user, .msg.msg-user { align-self: flex-end; background: #1a4a8a; border-bottom-right-radius: 4px; }
.msg.tutor, .msg.msg-tutor { align-self: flex-start; background: var(--bg-card); border-bottom-left-radius: 4px; }
.msg .chinese { font-size: 18px; }
.msg .pinyin { font-size: 13px; color: var(--text-secondary); font-style: italic; }
.msg.user .pinyin, .msg.msg-user .pinyin { color: #c8d6e5; }
.msg .english { font-size: 12px; color: var(--text-muted); }
.msg.user .english, .msg.msg-user .english { color: #a0b4c8; }
.talk-suggestions { padding: 6px 16px; display: flex; gap: 6px; flex-wrap: wrap; flex-shrink: 0; min-height: 0; }
.suggestion { padding: 8px 14px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 18px; cursor: pointer; font-size: 13px; }
.suggestion:hover { background: #2d3a50; border-color: #3b82f6; }
.suggestion .ch { color: var(--text); font-size: 15px; }
.suggestion .py { font-size: 11px; color: var(--text-secondary); font-style: italic; }
.suggestion .en { font-size: 11px; color: var(--text-muted); }
.talk-input-bar { padding: 10px 16px 16px; display: flex; flex-direction: column; align-items: center; gap: 8px; flex-shrink: 0; background: var(--bg); border-top: 1px solid var(--border); }
  
/* Big mic for inline talk */
.record-btn-big { width: 80px; height: 80px; font-size: 38px; border-width: 3px; box-shadow: 0 0 20px rgba(59,130,246,0.2); }
.record-btn-big:hover { transform: scale(1.08); }
.record-btn-big.recording { box-shadow: 0 0 30px rgba(220,38,38,0.5); }
.talk-input-bar.inline-mic { position: sticky; bottom: 0; background: var(--bg); z-index: 10; }



 50% { box-shadow: 0 0 0 16px rgba(220,38,38,0); } }



.type-row { display: flex; gap: 6px; width: 100%; max-width: 500px; }
.type-row input { flex: 1; padding: 8px 12px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 20px; color: var(--text); font-size: 14px; }
.type-row button { padding: 8px 16px; background: #1a4a8a; border: none; border-radius: 20px; color: white; cursor: pointer; font-size: 14px; }
/* Practice panel */
.practice-panel { background: var(--bg-card); border: 2px solid #f59e0b; border-radius: 12px; padding: 14px; margin: 8px 0; }
.practice-panel.passed { border-color: #22c55e; }
.practice-target { font-size: 22px; text-align: center; }
.practice-target-pinyin { font-size: 14px; text-align: center; color: var(--text-secondary); font-style: italic; margin-bottom: 8px; }
.practice-score { text-align: center; font-size: 32px; font-weight: bold; margin: 4px 0; }
.practice-score.good { color: #22c55e; }
.practice-score.ok { color: #f59e0b; }
.practice-score.bad { color: #ef4444; }
.practice-feedback { text-align: center; font-size: 13px; color: var(--text-secondary); margin: 4px 0; }
.practice-errors { font-size: 12px; color: #f59e0b; margin: 6px 0; }
.practice-retry { text-align: center; margin-top: 6px; }
/* Generic */
.practice-target { font-size: 24px; text-align: center; margin-bottom: 4px; }
.practice-target-pinyin { font-size: 16px; text-align: center; color: var(--text-secondary); font-style: italic; margin-bottom: 12px; }
.practice-score { text-align: center; font-size: 36px; font-weight: bold; margin: 8px 0; }
.practice-score.good { color: #22c55e; }
.practice-score.ok { color: #f59e0b; }
.practice-score.bad { color: #ef4444; }
.practice-feedback { text-align: center; font-size: 14px; color: var(--text-secondary); margin: 4px 0; }
.practice-errors { font-size: 13px; color: #f59e0b; margin: 8px 0; }
.practice-retry { text-align: center; margin-top: 8px; }
.phrase-row { display: flex; align-items: center; gap: 8px; padding: 8px 12px; background: var(--bg-card); border-radius: 8px; margin: 4px 0; cursor: pointer; border: 1px solid var(--border); }
.phrase-row:hover { border-color: #3b82f6; }
.phrase-row .ch { font-size: 18px; min-width: 80px; }
.phrase-row .py { font-size: 13px; color: var(--text-secondary); font-style: italic; flex: 1; }
.phrase-row .en { font-size: 13px; color: var(--text-muted); }
.phrase-row .spk { font-size: 16px; opacity: 0.5; }
.phrase-row:hover .spk { opacity: 1; }
.quiz-card { background: var(--bg-card); border-radius: 12px; padding: 24px; text-align: center; margin: 12px 0; border: 2px solid var(--border); }
.quiz-card.current { border-color: #3b82f6; }
/* Listening quiz play button */
.quiz-play-btn { display: flex; align-items: center; justify-content: center; gap: 10px; margin: 0 auto 16px; padding: 14px 28px; background: linear-gradient(135deg, #7c3aed, #8b5cf6); border: none; border-radius: 50px; color: white; font-size: 15px; font-weight: 700; cursor: pointer; box-shadow: 0 4px 20px rgba(139,92,246,0.4); transition: all 0.2s; min-width: 160px; }
.quiz-play-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 28px rgba(139,92,246,0.55); }
.quiz-play-btn:active { transform: scale(0.97); }
.quiz-play-btn.playing { background: linear-gradient(135deg, #0ea5e9, #3b82f6); box-shadow: 0 4px 20px rgba(59,130,246,0.4); animation: playPulse 1s ease-in-out infinite; }
@keyframes playPulse { 0%,100% { box-shadow: 0 4px 20px rgba(59,130,246,0.4); } 50% { box-shadow: 0 4px 32px rgba(59,130,246,0.7); } }
.quiz-big { font-size: 32px; margin: 16px 0; }
.quiz-pinyin { font-size: 18px; color: var(--text-secondary); font-style: italic; }
.quiz-options { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 12px; }
.quiz-option { padding: 12px; background: var(--border); border: 2px solid #475569; border-radius: 8px; cursor: pointer; font-size: 15px; color: var(--text); text-align: center; }
.quiz-option:hover { border-color: #3b82f6; background: #1e3a5f; }
.quiz-option.correct { border-color: #22c55e; background: #14532d; }
.quiz-option.wrong { border-color: #ef4444; background: #450a0a; }
.quiz-score-bar { height: 6px; background: var(--border); border-radius: 3px; margin: 8px 0; }
.quiz-score-fill { height: 100%; border-radius: 3px; background: #22c55e; transition: width 0.3s; }


/* G��G�� Lessons redesign G��G�� */
/* Lessons page */
.lessons-wrap { flex: 1; overflow-y: auto; padding: 16px; -webkit-overflow-scrolling: touch; }
.lessons-header { text-align: center; padding: 8px 0 20px; }
.lessons-header h2 { font-size: 22px; font-weight: 800; background: linear-gradient(135deg, #60a5fa, #a78bfa, #f472b6); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: 4px; }
.lessons-header p { font-size: 13px; color: var(--text-muted); }
.lessons-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.lesson-card { position: relative; background: linear-gradient(135deg, #f8fafc, #f1f5f9); border: 1px solid var(--border); border-radius: 18px; padding: 20px 18px 16px; cursor: pointer; transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s; overflow: hidden; }
.lesson-card::before { content: ''; position: absolute; inset: 0; opacity: 0; background: linear-gradient(135deg, rgba(59,130,246,0.15), rgba(167,139,250,0.15)); transition: opacity 0.2s; border-radius: 18px; }
.lesson-card:hover { transform: translateY(-4px); border-color: #3b82f6; box-shadow: 0 8px 32px rgba(59,130,246,0.2); }
.lesson-card:hover::before { opacity: 1; }
.lesson-card .lc-emoji { font-size: 36px; margin-bottom: 10px; display: block; }
.lesson-card .lc-title { font-size: 16px; font-weight: 700; color: var(--text); margin-bottom: 2px; }
.lesson-card .lc-cn { font-size: 18px; color: #60a5fa; font-weight: 600; margin-bottom: 6px; }
.lesson-card .lc-desc { font-size: 12px; color: var(--text-muted); line-height: 1.5; margin-bottom: 10px; }
.lesson-card .lc-footer { display: flex; align-items: center; justify-content: space-between; }
.lesson-card .lc-badge { font-size: 10px; font-weight: 700; padding: 3px 8px; border-radius: 20px; text-transform: uppercase; letter-spacing: 0.5px; }
.lc-badge.beginner { background: rgba(34,197,94,0.15); color: #22c55e; border: 1px solid rgba(34,197,94,0.3); }
.lc-badge.intermediate { background: rgba(245,158,11,0.15); color: #f59e0b; border: 1px solid rgba(245,158,11,0.3); }
.lc-badge.advanced { background: rgba(239,68,68,0.15); color: #ef4444; border: 1px solid rgba(239,68,68,0.3); }
.lesson-card .lc-count { font-size: 11px; color: #475569; }
.lesson-card .lc-arrow { position: absolute; bottom: 16px; right: 16px; font-size: 18px; opacity: 0; transition: opacity 0.2s, transform 0.2s; }
.lesson-card:hover .lc-arrow { opacity: 1; transform: translateX(4px); }
/* Progress badges on lesson cards */
.lc-progress { display: flex; gap: 6px; margin-top: 8px; flex-wrap: wrap; }
.lc-prog-badge { display: flex; align-items: center; gap: 3px; font-size: 10px; font-weight: 700; padding: 2px 7px; border-radius: 10px; }
.lc-prog-badge.test  { background: rgba(59,130,246,0.12); color: #60a5fa; border: 1px solid rgba(59,130,246,0.25); }
.lc-prog-badge.quiz  { background: rgba(139,92,246,0.12); color: #a78bfa; border: 1px solid rgba(139,92,246,0.25); }
.lc-prog-badge.done  { background: rgba(34,197,94,0.15);  color: #22c55e; border: 1px solid rgba(34,197,94,0.3); }
.lesson-card.completed { border-color: rgba(34,197,94,0.4); }
.lesson-card.completed::before { opacity: 0.6; background: linear-gradient(135deg, rgba(34,197,94,0.08), rgba(16,185,129,0.08)); }
.lc-complete-ribbon { position: absolute; top: 12px; right: 12px; font-size: 18px; }

/* Lesson detail */
.lesson-detail-wrap { flex: 1; overflow-y: auto; padding: 16px; -webkit-overflow-scrolling: touch; }
.lesson-detail-hero { background: linear-gradient(135deg, #f8fafc, #f1f5f9); border: 1px solid var(--border); border-radius: 18px; padding: 20px; margin-bottom: 16px; position: relative; overflow: hidden; }
.lesson-detail-hero::after { content: attr(data-emoji); position: absolute; right: -10px; top: -10px; font-size: 80px; opacity: 0.08; pointer-events: none; }
.lesson-detail-hero .ldh-back { background: rgba(255,255,255,0.07); border: 1px solid var(--border); color: var(--text-secondary); padding: 5px 12px; border-radius: 8px; cursor: pointer; font-size: 13px; margin-bottom: 12px; display: inline-block; transition: background 0.15s; }
.lesson-detail-hero .ldh-back:hover { background: rgba(255,255,255,0.13); }
.lesson-detail-hero h2 { font-size: 22px; font-weight: 800; color: var(--text); margin-bottom: 2px; }
.lesson-detail-hero .ldh-cn { font-size: 26px; color: #60a5fa; font-weight: 700; margin-bottom: 6px; }
.lesson-detail-hero p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }
.lesson-detail-hero .ldh-note { margin-top: 10px; padding: 10px 12px; background: rgba(245,158,11,0.08); border-left: 3px solid #f59e0b; border-radius: 0 8px 8px 0; font-size: 12px; color: var(--text-secondary); line-height: 1.5; }
.lesson-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.lesson-action-btn { flex: 1; min-width: 120px; padding: 12px 10px; border: none; border-radius: 14px; cursor: pointer; font-size: 13px; font-weight: 700; transition: transform 0.15s, box-shadow 0.15s; text-align: center; }
.lesson-action-btn:hover { transform: translateY(-2px); }
.lab-testme { background: linear-gradient(135deg, #3b82f6, #6366f1); color: white; box-shadow: 0 4px 16px rgba(59,130,246,0.3); }
.lab-testme:hover { box-shadow: 0 6px 24px rgba(59,130,246,0.5); }
.lab-quiz { background: linear-gradient(135deg, #8b5cf6, #a855f7); color: white; box-shadow: 0 4px 16px rgba(139,92,246,0.3); }
.lab-quiz:hover { box-shadow: 0 6px 24px rgba(139,92,246,0.5); }
.lab-flash { background: linear-gradient(135deg, #10b981, #059669); color: white; box-shadow: 0 4px 16px rgba(16,185,129,0.3); }
.lab-flash:hover { box-shadow: 0 6px 24px rgba(16,185,129,0.5); }
.phrases-section h4 { font-size: 13px; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 10px; }
.phrase-card { display: flex; align-items: center; gap: 12px; padding: 12px 14px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; margin-bottom: 8px; cursor: pointer; transition: border-color 0.15s, background 0.15s; }
.phrase-card:hover { border-color: #3b82f6; background: #1e2d45; }
.phrase-card .pc-num { font-size: 11px; color: var(--text-muted); font-weight: 700; min-width: 20px; }
.phrase-card .pc-chinese { font-size: 20px; color: var(--text); min-width: 60px; }
.phrase-card .pc-right { flex: 1; }
.phrase-card .pc-pinyin { font-size: 12px; color: #60a5fa; font-style: italic; margin-bottom: 1px; }
.phrase-card .pc-english { font-size: 13px; color: var(--text-secondary); }
.phrase-card .pc-play { font-size: 20px; opacity: 0.3; transition: opacity 0.15s, transform 0.15s; }
.phrase-card:hover .pc-play { opacity: 1; transform: scale(1.2); }

/* G��G�� Flashcards redesign G��G�� */
.fc-wrap { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 14px; -webkit-overflow-scrolling: touch; }
.fc-toolbar { display: flex; gap: 8px; align-items: center; }
.fc-mode-btn { padding: 8px 18px; border-radius: 20px; border: 2px solid var(--border); background: transparent; color: var(--text-secondary); font-size: 13px; font-weight: 700; cursor: pointer; transition: all 0.2s; }
.fc-mode-btn.active { background: linear-gradient(135deg, #3b82f6, #6366f1); border-color: transparent; color: white; box-shadow: 0 4px 14px rgba(59,130,246,0.35); }
.fc-add-btn { margin-left: auto; padding: 8px 16px; border-radius: 20px; border: 2px dashed #334155; background: transparent; color: var(--text-muted); font-size: 13px; cursor: pointer; transition: all 0.2s; }
.fc-add-btn:hover { border-color: #3b82f6; color: #3b82f6; }
.fc-add-panel { background: linear-gradient(135deg, #f8fafc, #f1f5f9); border: 1px solid var(--border); border-radius: 16px; padding: 16px; display: flex; gap: 8px; flex-wrap: wrap; align-items: flex-end; }
.fc-add-panel input { flex: 1; min-width: 130px; padding: 10px 12px; background: var(--bg-alt); border: 1px solid var(--border); border-radius: 10px; color: var(--text); font-size: 13px; }
.fc-add-panel input:focus { outline: none; border-color: #3b82f6; }
/* Flip card */
.fc-flip-area { perspective: 1000px; }
.fc-card-scene { width: 100%; max-width: 420px; height: 220px; margin: 0 auto; perspective: 1000px; }
.fc-card-inner { width: 100%; height: 100%; position: relative; transform-style: preserve-3d; transition: transform 0.5s cubic-bezier(0.4,0,0.2,1); cursor: pointer; }
.fc-card-inner.flipped { transform: rotateY(180deg); }
.fc-card-face { position: absolute; inset: 0; backface-visibility: hidden; border-radius: 20px; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 24px; }
.fc-card-front { background: linear-gradient(135deg, #dbeafe, #fff); border: 1px solid #3b82f6; box-shadow: 0 8px 32px rgba(59,130,246,0.15); }
.fc-card-back { background: linear-gradient(135deg, #ede9fe, #fff); border: 1px solid #8b5cf6; box-shadow: 0 8px 32px rgba(139,92,246,0.15); transform: rotateY(180deg); }
.fc-card-chinese { font-size: 48px; color: var(--text); margin-bottom: 8px; }
.fc-card-pinyin { font-size: 16px; color: #60a5fa; font-style: italic; }
.fc-card-english { font-size: 22px; color: var(--text); font-weight: 600; }
.fc-card-hint { font-size: 13px; color: var(--text-muted); margin-top: 6px; }
.fc-card-tap { font-size: 11px; color: var(--text-muted); position: absolute; bottom: 12px; right: 16px; }
.fc-nav { display: flex; gap: 10px; justify-content: center; align-items: center; }
.fc-nav-btn { padding: 10px 24px; border-radius: 12px; border: 1px solid var(--border); background: var(--bg-card); color: var(--text-secondary); font-size: 14px; cursor: pointer; transition: all 0.15s; }
.fc-nav-btn:hover { border-color: #3b82f6; color: var(--text); }
.fc-nav-btn.primary { background: linear-gradient(135deg, #3b82f6, #6366f1); border-color: transparent; color: white; box-shadow: 0 4px 14px rgba(59,130,246,0.3); }
.fc-counter { font-size: 13px; color: #475569; min-width: 60px; text-align: center; }
.fc-speak-btn { padding: 8px 14px; border-radius: 10px; border: 1px solid var(--border); background: transparent; color: var(--text-muted); font-size: 13px; cursor: pointer; transition: all 0.15s; }
.fc-speak-btn:hover { border-color: #22c55e; color: #22c55e; }
/* No cards empty state */
.fc-empty { text-align: center; padding: 60px 20px; }
.fc-empty .fc-empty-icon { font-size: 56px; margin-bottom: 16px; }
.fc-empty h3 { font-size: 18px; color: var(--text); margin-bottom: 8px; }
.fc-empty p { font-size: 13px; color: var(--text-muted); }
/* Quiz mode */
.fc-quiz-card { background: linear-gradient(135deg, #f8fafc, #f1f5f9); border: 2px solid var(--border); border-radius: 20px; padding: 28px 20px 20px; text-align: center; }
.fc-quiz-chinese { font-size: 52px; color: var(--text); margin-bottom: 6px; }
.fc-quiz-pinyin { font-size: 16px; color: #60a5fa; font-style: italic; margin-bottom: 16px; }
.fc-quiz-result { font-size: 14px; min-height: 20px; margin: 8px 0; }

/* Lessons difficulty filter */
.lessons-filter { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 16px; justify-content: center; }
.diff-btn { padding: 6px 16px; border-radius: 20px; border: 1px solid var(--border); background: transparent; color: var(--text-muted); font-size: 12px; font-weight: 700; cursor: pointer; transition: all 0.15s; text-transform: uppercase; letter-spacing: 0.5px; }
.diff-btn:hover { border-color: #3b82f6; color: var(--text); }
.diff-btn.active { color: white; border-color: transparent; }
.diff-btn.all.active { background: linear-gradient(135deg, #334155, #475569); }
.diff-btn.beginner.active { background: linear-gradient(135deg, #16a34a, #22c55e); }
.diff-btn.intermediate.active { background: linear-gradient(135deg, #d97706, #f59e0b); }
.diff-btn.advanced.active { background: linear-gradient(135deg, #dc2626, #ef4444); }


/* -- Chunks Section -- */
.chunk-wrap { flex: 1; overflow-y: auto; padding: 0 12px 24px; max-width: 680px; margin: 0 auto; width: 100%; -webkit-overflow-scrolling: touch; }
.chunk-toolbar { display: flex; gap: 6px; padding: 10px 0; flex-wrap: wrap; }
.chunk-mode-btn { background: var(--bg-card); border: 1px solid var(--border); color: var(--text-secondary); padding: 7px 14px; border-radius: 8px; font-size: 13px; cursor: pointer; }
.chunk-mode-btn.active { background: #3b82f6; border-color: #3b82f6; color: #fff; }
.chunk-add-btn { background: #22c55e; border: none; color: #fff; padding: 7px 14px; border-radius: 8px; font-size: 13px; cursor: pointer; margin-left: auto; }
.chunk-info-btn { background: var(--bg-card); border: 1px solid var(--border); color: var(--text-secondary); padding: 7px 10px; border-radius: 8px; font-size: 14px; cursor: pointer; }
.chunk-info-btn:hover { background: #2d3748; border-color: #475569; }
.chunk-info-modal { max-width: 520px !important; max-height: 80vh; overflow-y: auto; }
.chunk-info-modal h2 { color: var(--text); text-align: center; margin: 0 0 4px; font-size: 20px; }
.chunk-info-subtitle { text-align: center; color: var(--text-muted); font-size: 14px; margin: 0 0 16px; }
.chunk-info-icon { text-align: center; font-size: 40px; margin-bottom: 8px; }
.chunk-info-section { margin-bottom: 16px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.chunk-info-section h4 { color: var(--text); margin: 0 0 8px; font-size: 14px; }
.chunk-info-section p { color: #cbd5e1; font-size: 13px; line-height: 1.6; margin: 4px 0; }
.chunk-info-section ul, .chunk-info-section ol { color: #cbd5e1; font-size: 13px; line-height: 1.7; padding-left: 20px; margin: 4px 0; }
.chunk-info-section ul li, .chunk-info-section ol li { margin-bottom: 4px; }
.chunk-info-examples { display: flex; flex-direction: column; gap: 6px; }
.chunk-example { background: var(--bg-alt); padding: 8px 12px; border-radius: 8px; font-size: 13px; }
.chunk-example .ch { color: var(--text); font-weight: 600; }
.chunk-example .py { color: var(--text-muted); margin-left: 8px; }
.chunk-example .en { color: var(--text-secondary); margin-left: 8px; font-style: italic; }
.chunk-add-panel { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 14px; margin-bottom: 10px; }
.chunk-add-panel input,.chunk-add-panel textarea { width: 100%; background: var(--bg-alt); border: 1px solid var(--border); color: var(--text); padding: 8px 10px; border-radius: 8px; font-size: 13px; outline: none; box-sizing: border-box; margin-bottom: 4px; }
.chunk-add-panel input:focus,.chunk-add-panel textarea:focus { border-color: #3b82f6; }
.chunk-category-bar { padding: 8px 4px; display: flex; gap: 6px; flex-wrap: wrap; }
.chunk-cat-btn { background: var(--bg-card); border: 1px solid var(--border); color: var(--text-secondary); padding: 4px 10px; border-radius: 14px; font-size: 12px; cursor: pointer; }
.chunk-cat-btn.active { background: #3b82f6; border-color: #3b82f6; color: #fff; }
.chunk-empty { text-align: center; padding: 60px 20px; }
.chunk-empty .chunk-empty-icon { font-size: 56px; margin-bottom: 16px; }
.chunk-empty h3 { font-size: 18px; color: var(--text); margin-bottom: 8px; }
.chunk-empty p { font-size: 13px; color: var(--text-muted); }
.chunk-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 14px; margin-bottom: 10px; transition: border-color 0.15s; }
.chunk-card:hover { border-color: #3b82f6; }
.chunk-chinese { font-size: 20px; font-weight: 700; color: var(--text); }
.chunk-pinyin { font-size: 13px; color: var(--text-secondary); font-style: italic; }
.chunk-english { font-size: 14px; color: var(--text-muted); margin-top: 2px; }
.chunk-breakdown { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 6px; }
.chunk-breakdown-word { background: var(--bg-alt); padding: 2px 8px; border-radius: 6px; font-size: 12px; color: var(--text-secondary); display: inline-block; }
.chunk-breakdown-word .ch { color: var(--text); }
.chunk-breakdown-word .en { color: var(--text-muted); margin-left: 2px; }
.chunk-usage { font-size: 12px; color: #f59e0b; margin-top: 4px; padding: 4px 8px; background: rgba(245,158,11,0.1); border-radius: 6px; }
.chunk-cat-tag { display: inline-block; font-size: 10px; padding: 1px 7px; border-radius: 8px; font-weight: 600; }
.chunk-speak-btn,.chunk-del-btn { background: none; border: 1px solid var(--border); color: var(--text-secondary); padding: 3px 7px; border-radius: 6px; font-size: 12px; cursor: pointer; margin-left: 3px; }
.chunk-speak-btn:hover { border-color: #22c55e; color: #22c55e; }
.chunk-del-btn:hover { border-color: #ef4444; color: #ef4444; }
.chunk-quiz-card { background: linear-gradient(135deg, #f8fafc, #f1f5f9); border: 2px solid var(--border); border-radius: 20px; padding: 28px 20px 20px; text-align: center; }
.chunk-quiz-chinese { font-size: 32px; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.chunk-quiz-pinyin { font-size: 14px; color: var(--text-secondary); margin-bottom: 16px; }
.chunk-quiz-result { text-align: center; font-size: 16px; font-weight: 700; padding: 12px; }

/* -- Chunk Speak View (Voice Drill) -- */
.chunk-speak-card { background: linear-gradient(135deg, #f8fafc, #f1f5f9); border: 2px solid var(--border); border-radius: 20px; padding: 24px 20px 20px; text-align: center; margin-top: 8px; }
.chunk-speak-phase { font-size: 13px; color: var(--text-secondary); margin-bottom: 8px; font-weight: 600; }
.chunk-speak-chinese { font-size: 36px; font-weight: 800; color: var(--text); margin-bottom: 4px; }
.chunk-speak-pinyin { font-size: 15px; color: var(--text-secondary); font-style: italic; margin-bottom: 4px; }
.chunk-speak-english { font-size: 14px; color: var(--text-muted); margin-bottom: 12px; }
.chunk-speak-status { font-size: 14px; color: var(--text-secondary); margin-bottom: 16px; min-height: 20px; }
.chunk-speak-mic-area { display: flex; flex-direction: column; align-items: center; gap: 6px; margin-bottom: 8px; }
.chunk-speak-mic-btn { width: 72px; height: 72px; border-radius: 50%; border: 2px solid var(--border); background: linear-gradient(135deg, #f8fafc, #f1f5f9); color: var(--text); font-size: 32px; cursor: pointer; transition: all 0.2s; display: flex; align-items: center; justify-content: center; }
.chunk-speak-mic-btn:hover { border-color: #3b82f6; background: #1a2332; }
.chunk-speak-mic-btn.recording { border-color: #ef4444; background: rgba(239,68,68,0.15); animation: chunkSpeakPulse 0.8s ease-in-out infinite; }
@keyframes chunkSpeakPulse { 0%,100% { box-shadow: 0 0 0 0 rgba(239,68,68,0.4); } 50% { box-shadow: 0 0 0 16px rgba(239,68,68,0); } }
.chunk-speak-mic-status { font-size: 12px; color: var(--text-muted); }
.chunk-speak-level-bar { width: 180px; height: 4px; background: var(--border); border-radius: 2px; overflow: hidden; }
.chunk-speak-level-fill { width: 0%; height: 100%; background: linear-gradient(90deg, #22c55e, #3b82f6); border-radius: 2px; transition: width 0.08s; }
.chunk-speak-attempts { min-height: 24px; margin-top: 4px; }
.chunk-speak-auto-label { display: inline-flex; align-items: center; gap: 4px; cursor: pointer; font-size: 12px; color: var(--text-secondary); user-select: none; padding: 3px 8px; border-radius: 6px; border: 1px solid var(--border); background: var(--bg-alt); transition: all 0.15s; }
.chunk-speak-auto-label:hover { border-color: #3b82f6; background: #1a2332; }
.chunk-speak-auto-label input[type="checkbox"] { accent-color: #22c55e; cursor: pointer; }
.chunk-speak-auto-label:has(input:checked) { border-color: #22c55e55; background: rgba(34,197,94,0.08); }
.chunk-speak-auto-text { font-size: 12px; }
.chunk-speak-action-btn { display: inline-flex; align-items: center; gap: 3px; font-size: 12px; color: var(--text-secondary); cursor: pointer; padding: 3px 8px; border-radius: 6px; border: 1px solid var(--border); background: var(--bg-alt); transition: all 0.15s; user-select: none; }
.chunk-speak-action-btn:hover { border-color: #3b82f6; background: #1a2332; color: var(--text); }
.chunk-speak-stop-btn:hover { border-color: #ef4444; background: rgba(239,68,68,0.1); color: #f87171; }
.chunk-speak-progress { display: flex; justify-content: space-between; align-items: center; padding: 8px 4px; margin-top: 8px; font-size: 13px; color: var(--text-muted); }
.chunk-speak-counter { font-size: 13px; color: var(--text-secondary); }
.chunk-speak-score { font-size: 14px; font-weight: 700; color: var(--text-secondary); }

/* -- Modal Overlay -- */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.7); display: flex; align-items: center; justify-content: center; z-index: 1000; padding: 20px; backdrop-filter: blur(4px); }
.modal-content { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 24px; position: relative; max-width: 480px; width: 100%; box-shadow: 0 20px 60px rgba(0,0,0,0.5); }
.modal-close { position: absolute; top: 12px; right: 12px; background: none; border: none; color: var(--text-muted); font-size: 18px; cursor: pointer; padding: 4px 8px; border-radius: 6px; }
.modal-close:hover { background: var(--border); color: var(--text); }

/* -- Tone Trainer -- */
.tone-layout { display: flex; gap: 20px; padding: 16px; flex: 1; min-height: 0; overflow: hidden; }
.tone-sidebar { width: 260px; flex-shrink: 0; display: flex; flex-direction: column; gap: 12px; overflow-y: auto; }
.tone-selector { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.tone-btn { padding: 12px 8px; border-radius: 12px; border: 2px solid var(--border); background: var(--bg-alt); color: var(--text-secondary); cursor: pointer; text-align: center; transition: all 0.15s; }
.tone-btn:hover { border-color: var(--text-muted); background: #1a2332; }
.tone-btn.active { border-color: #3b82f6; background: rgba(59,130,246,0.12); color: #60a5fa; }
.tone-btn.active .tone-btn-mark { color: #60a5fa; }
.tone-btn-mark { display: block; font-size: 28px; line-height: 1; margin-bottom: 2px; }
.tone-btn-name { display: block; font-size: 11px; font-weight: 600; }
.tone-btn-example { display: block; font-size: 13px; color: var(--text-muted); margin-top: 2px; }
.tone-btn-listen { position: absolute; top: 4px; right: 4px; font-size: 14px; cursor: pointer; opacity: 0.6; transition: opacity 0.15s; padding: 2px; border-radius: 4px; }
.tone-btn-listen:hover { opacity: 1; background: rgba(59,130,246,0.2); }
.tone-btn { position: relative; }

.tone-description { background: var(--bg-card); border-radius: 12px; padding: 14px; }
.tone-desc-title { font-size: 13px; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.tone-desc-text { font-size: 12px; color: var(--text-secondary); line-height: 1.5; }
.tone-desc-tip { font-size: 12px; color: #fbbf24; margin-top: 8px; padding: 8px; background: rgba(251,191,36,0.08); border-radius: 8px; }

.tone-tips { background: var(--bg-card); border-radius: 12px; padding: 14px; }
.tone-tip-title { font-size: 12px; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.tone-tip-list { margin: 0; padding-left: 0; list-style: none; }
.tone-tip-list li { font-size: 12px; color: var(--text-secondary); padding: 4px 0; line-height: 1.4; }

.tone-main { flex: 1; display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.tone-canvas-wrap { flex: 1; background: var(--bg-alt); border-radius: 12px; border: 1px solid var(--border); min-height: 200px; display: flex; align-items: center; justify-content: center; }
#tone-canvas { width: 100%; height: 100%; border-radius: 8px; display: block; }

.tone-controls { display: flex; align-items: center; gap: 16px; padding: 8px 12px; background: var(--bg-card); border-radius: 12px; }
.tone-control-info { flex: 1; }
.tone-score { font-size: 28px; font-weight: 800; min-height: 36px; transition: color 0.3s; }
.tone-status { font-size: 13px; color: var(--text-secondary); }

.tone-legend { display: flex; gap: 20px; padding: 8px 12px; background: var(--bg-card); border-radius: 8px; }
.tone-legend-item { font-size: 12px; color: var(--text-secondary); display: flex; align-items: center; gap: 8px; }
.tone-legend-line { width: 24px; height: 3px; border-radius: 2px; display: inline-block; }
.tone-legend-line.ref { background: #3b82f6; }
.tone-legend-line.ref::after { content: ''; display: block; width: 100%; height: 3px; background: transparent; border-top: 2px dashed #3b82f6; margin-top: -3px; }
.tone-legend-line.user { background: #22c55e; }

/* ── Speak Test ── */
.speaktest-wrap { max-width: 520px; margin: 0 auto; padding: 16px; }
.speaktest-form { display: flex; flex-direction: column; gap: 14px; }
.speaktest-field { display: flex; flex-direction: column; gap: 4px; }
.speaktest-field label { font-size: 13px; font-weight: 600; color: var(--text-secondary); }
.speaktest-field select,
.speaktest-field input[type="number"] { background: var(--bg-card); border: 1px solid var(--border); color: var(--text); padding: 8px 12px; border-radius: 8px; font-size: 14px; outline: none; }
.speaktest-field select:focus,
.speaktest-field input:focus { border-color: #3b82f6; }
.speaktest-direction { display: flex; gap: 12px; }
.speaktest-radio { display: flex; align-items: center; gap: 6px; cursor: pointer; font-size: 13px; color: var(--text-secondary); padding: 6px 10px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg-alt); transition: all 0.15s; }
.speaktest-radio:hover { border-color: #3b82f6; }
.speaktest-radio input[type="radio"] { accent-color: #3b82f6; }
.speaktest-radio:has(input:checked) { border-color: #3b82f6; background: rgba(59,130,246,0.1); color: var(--text); }
.speaktest-toggle { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; font-size: 13px; color: var(--text-secondary); padding: 6px 10px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg-alt); transition: all 0.15s; }
.speaktest-toggle:hover { border-color: #3b82f6; }
.speaktest-toggle input[type="checkbox"] { accent-color: #22c55e; }
.speaktest-toggle:has(input:checked) { border-color: #22c55e55; background: rgba(34,197,94,0.08); }
.speaktest-card { background: linear-gradient(135deg, #f8fafc, #f1f5f9); border: 2px solid var(--border); border-radius: 20px; padding: 24px 20px 20px; text-align: center; margin-top: 8px; }
.speaktest-phase { font-size: 13px; color: var(--text-secondary); margin-bottom: 8px; font-weight: 600; }
.speaktest-prompt { font-size: 36px; font-weight: 800; color: var(--text); margin-bottom: 4px; display: none; }
.speaktest-hint { font-size: 15px; color: var(--text-secondary); font-style: italic; margin-bottom: 12px; display: none; }

/* Color swatch */
.speaktest-swatch {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto 10px;
  border: 3px solid #475569;
  box-shadow: 0 0 16px rgba(0,0,0,0.3);
}

/* Clock display */
.speaktest-clock { margin: 0 auto 10px; text-align: center; }
.speaktest-clock canvas { display: block; margin: 0 auto; border-radius: 50%; }
.speaktest-clock-digital {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-top: 6px;
  font-variant-numeric: tabular-nums;
}
.speaktest-status { font-size: 14px; color: var(--text-secondary); margin-bottom: 16px; min-height: 20px; }
.speaktest-actions { display: flex; gap: 8px; justify-content: center; margin-top: 8px; }
.speaktest-action-btn { display: inline-flex; align-items: center; gap: 3px; font-size: 12px; color: var(--text-secondary); cursor: pointer; padding: 3px 8px; border-radius: 6px; border: 1px solid var(--border); background: var(--bg-alt); transition: all 0.15s; user-select: none; }
.speaktest-action-btn:hover { border-color: #3b82f6; background: #1a2332; color: var(--text); }
.speaktest-stop-btn:hover { border-color: #ef4444; background: rgba(239,68,68,0.1); color: #f87171; }
.speaktest-attempts { min-height: 24px; margin-top: 4px; }
.speaktest-progress { display: flex; justify-content: space-between; align-items: center; padding: 8px 4px; margin-top: 8px; font-size: 13px; color: var(--text-muted); }
.speaktest-counter { font-size: 13px; color: var(--text-secondary); }
/* Shared mic area (used by speak-engine) */
.speak-mic-area { display: flex; flex-direction: column; align-items: center; gap: 6px; margin-bottom: 8px; }
.speak-mic-btn { width: 72px; height: 72px; border-radius: 50%; border: 2px solid var(--border); background: linear-gradient(135deg, #f8fafc, #f1f5f9); color: var(--text); font-size: 32px; cursor: pointer; transition: all 0.2s; display: flex; align-items: center; justify-content: center; }
.speak-mic-btn:hover { border-color: #3b82f6; background: #1a2332; }
.speak-mic-btn.recording { border-color: #ef4444; background: rgba(239,68,68,0.15); animation: chunkSpeakPulse 0.8s ease-in-out infinite; }
.speak-level-bar { width: 180px; height: 4px; background: var(--border); border-radius: 2px; overflow: hidden; }
.speak-level-fill { width: 0%; height: 100%; background: linear-gradient(90deg, #22c55e, #3b82f6); border-radius: 2px; transition: width 0.08s; }

/* ---------------------------------------
   XP & Streak System
   --------------------------------------- */

.xp-header-display {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-right: 12px;
  cursor: default;
  user-select: none;
}

.xp-streak-badge {
  display: flex;
  align-items: center;
  gap: 3px;
  font-size: 13px;
  font-weight: 700;
  color: #f59e0b;
  background: rgba(245, 158, 11, 0.1);
  padding: 3px 10px;
  border-radius: 12px;
  border: 1px solid rgba(245, 158, 11, 0.2);
  transition: all 0.3s;
}

.xp-streak-badge.on-fire {
  color: #ef4444;
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.3);
  animation: streakPulse 1.5s ease-in-out infinite;
}

@keyframes streakPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.xp-points {
  font-size: 12px;
  font-weight: 600;
  color: #22c55e;
  background: rgba(34, 197, 94, 0.1);
  padding: 3px 10px;
  border-radius: 12px;
  border: 1px solid rgba(34, 197, 94, 0.2);
  white-space: nowrap;
}

/* ---------------------------------------
   Dashboard Modal & Nav Badges
   --------------------------------------- */

.nav-badge {
  position: absolute;
  top: 2px;
  right: 6px;
  background: #ef4444;
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  min-width: 18px;
  height: 18px;
  line-height: 18px;
  text-align: center;
  border-radius: 9px;
  padding: 0 5px;
  box-shadow: 0 2px 6px rgba(239,68,68,0.4);
  animation: badgePop 0.3s ease-out;
}

@keyframes badgePop {
  0% { transform: scale(0.5); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.nav-item {
  position: relative;
}

.dashboard-stat-card {
  background: var(--bg-alt);
  border-radius: 10px;
  padding: 16px;
  text-align: center;
  border: 1px solid var(--border);
}

.dsc-value {
  font-size: 28px;
  font-weight: 700;
  color: #3b82f6;
  line-height: 1.2;
}

.dsc-label {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* Dashboard modal scrollbar */
.dashboard-modal-content::-webkit-scrollbar {
  width: 6px;
}
.dashboard-modal-content::-webkit-scrollbar-track {
  background: var(--bg-card);
}
.dashboard-modal-content::-webkit-scrollbar-thumb {
  background: #475569;
  border-radius: 3px;
}

/* === Progress Page === */

.progress-scroll {
  padding: 20px;
  max-width: 640px;
  margin: 0 auto;
}

.progress-summary-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 16px;
}

.progress-card {
  background: linear-gradient(135deg, #f8fafc, #f1f5f9);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  text-align: center;
}

.pc-icon { font-size: 24px; margin-bottom: 4px; }
.pc-value { font-size: 24px; font-weight: 700; color: var(--text); }
.pc-label { font-size: 12px; color: var(--text-secondary); margin-top: 2px; }
.pc-sub { font-size: 11px; color: var(--text-muted); margin-top: 4px; }

.lessons-card .pc-value { color: #3b82f6; }
.flashcards-card .pc-value { color: #22c55e; }
.xp-card .pc-value { color: #f59e0b; }
.voice-card .pc-value { color: #a78bfa; }

.progress-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 12px;
}

.chart-container {
  display: flex;
  gap: 2px;
  align-items: flex-end;
  height: 80px;
}

.chart-bar-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.chart-bar {
  width: 100%;
  border-radius: 2px 2px 0 0;
  transition: height 0.3s;
}

.chart-label {
  font-size: 8px;
  color: #475569;
  margin-top: 2px;
  writing-mode: vertical-lr;
  text-orientation: mixed;
}

.accuracy-card {
  background: var(--bg-alt);
  border-radius: 10px;
  padding: 12px;
  text-align: center;
}

.ac-value { font-size: 22px; font-weight: 700; color: var(--text); }
.ac-label { font-size: 12px; color: var(--text-secondary); margin-bottom: 8px; }

.ac-bar {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}

.ac-fill {
  height: 100%;
  background: linear-gradient(90deg, #3b82f6, #22c55e);
  border-radius: 3px;
  transition: width 0.5s;
}

.lesson-breakdown-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

.lesson-breakdown-row:last-child {
  border-bottom: none;
}

.lbr-left { display: flex; align-items: center; }
.lbr-right { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }

@media (max-width: 480px) {
  .progress-summary-grid { grid-template-columns: 1fr 1fr; }
  .lesson-breakdown-row { flex-direction: column; align-items: flex-start; gap: 4px; }
  .chart-label { font-size: 7px; }
  .write-layout-grid { grid-template-columns: 1fr !important; }
}

/* === Reading Page === */
.reading-scroll { padding: 20px; max-width: 900px; margin: 0 auto; }
.reading-level-tabs { display: flex; gap: 6px; margin-bottom: 16px; overflow-x: auto; padding-bottom: 4px; }
.reading-tab { padding: 6px 16px; border-radius: 20px; border: 1px solid var(--border); background: var(--bg-card); color: var(--text-secondary); font-size: 13px; cursor: pointer; white-space: nowrap; }
.reading-tab.active { background: #3b82f6; color: white; border-color: #3b82f6; }
.story-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.story-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 14px; cursor: pointer; transition: border-color 0.2s; }
.story-card:hover { border-color: #3b82f6; }
.story-card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
.story-level-badge { font-size: 10px; padding: 2px 8px; border-radius: 10px; color: white; font-weight: 600; }
.story-difficulty { font-size: 11px; color: var(--text-muted); }
.story-card-title { font-size: 18px; color: var(--text); margin-bottom: 2px; }
.story-card-sub { font-size: 13px; color: var(--text-secondary); }
.story-tag { font-size: 10px; padding: 2px 8px; background: var(--bg-alt); border: 1px solid var(--border); border-radius: 10px; color: var(--text-muted); }
#story-search:focus { border-color: #3b82f6 !important; }
#story-search::placeholder { color: #475569; }

/* Reader content */
.reader-content-box { background: var(--bg-alt); border: 1px solid var(--border); border-radius: 12px; padding: 16px; margin-bottom: 12px; }
.reader-sentence { margin-bottom: 16px; }
.reader-sentence-cn { font-size: 22px; line-height: 1.8; color: var(--text); letter-spacing: 1px; }
.reader-sentence-en { font-size: 14px; color: var(--text-secondary); margin-top: 4px; line-height: 1.5; padding-left: 2px; border-left: 2px solid #3b82f6; padding-left: 8px; }
.reader-sentence-py { font-size: 13px; color: #22c55e; margin-top: 4px; line-height: 1.4; }
.reader-char { display: inline; transition: background 0.15s; border-radius: 3px; padding: 0 1px; }
.reader-char.has-vocab:hover { background: var(--bg-card); cursor: pointer; }
.reader-punct { color: var(--text-muted); }
.reader-char ruby { display: inline-flex; flex-direction: column; align-items: center; vertical-align: top; }
.reader-char ruby rt { font-size: 10px; color: #22c55e; line-height: 1.2; letter-spacing: 0; font-weight: 400; }

/* Word detail popup */
.reader-word-popup { background: var(--bg-card); border: 1px solid #3b82f6; border-radius: 12px; padding: 14px; margin-bottom: 12px; z-index: 100; box-shadow: 0 4px 20px rgba(0,0,0,0.4); max-width: 260px; }

/* Sepia reading mode */
.reader-content-box.sepia { background: #f4e8c1; border-color: #d4c5a0; }
.reader-content-box.sepia .reader-sentence-cn { color: #5c4a2e; }
.reader-content-box.sepia .reader-sentence-en { color: #8b7a5a; border-left-color: #c4a86a; }
.reader-content-box.sepia .reader-punct { color: #a09070; }

/* Home / Dashboard */
.ritual-card:hover { border-color: #3b82f6 !important; transform: translateY(-2px); box-shadow: 0 4px 16px rgba(59,130,246,0.15); }
.hsk-dot { transition: all 0.3s; }

/* ── New Onboarding ── */
.onboarding-overlay { position:fixed; inset:0; background:rgba(0,0,0,0.7); z-index:10000; display:flex; align-items:center; justify-content:center; backdrop-filter:blur(4px); }
.onboarding-new { background:linear-gradient(135deg, #fff, #f8fafc); border:1px solid #334155; border-radius:20px; padding:32px; max-width:420px; width:90%; text-align:center; box-shadow:0 20px 60px rgba(0,0,0,0.5); }
.onboarding-step { display:none; }
.onboarding-step.active { display:block; }
.onb-icon { font-size:48px; margin-bottom:12px; }
.onboarding-new h2 { font-size:20px; color: var(--text); margin-bottom:8px; }
.onboarding-new p { font-size:14px; color:#64748b; margin-bottom:16px; line-height:1.5; }
.onb-select { width:100%; padding:10px 14px; background: var(--bg-alt); border:1px solid #334155; border-radius:10px; color: var(--text); font-size:14px; margin-bottom:16px; }
.onb-level-grid { display:grid; grid-template-columns:1fr 1fr; gap:10px; margin-bottom:16px; }
.onb-level-option { background: var(--bg-alt); border:1px solid #334155; border-radius:12px; padding:14px; cursor:pointer; transition:all 0.2s; text-align:center; }
.onb-level-option:hover { border-color:#3b82f6; }
.onb-level-option.selected { border-color:#22c55e; background:rgba(34,197,94,0.08); }
.onb-level-emoji { display:block; font-size:28px; margin-bottom:4px; }
.onb-level-name { display:block; font-size:14px; font-weight:600; color: var(--text); }
.onb-level-desc { display:block; font-size:11px; color:#64748b; margin-top:2px; }

/* HSK Prep Page */
.hsk-level-btn { padding: 6px 14px; border-radius: 20px; border: 1px solid var(--border); background: var(--bg-card); color: var(--text-secondary); font-size: 13px; cursor: pointer; white-space: nowrap; }
.hsk-level-btn.active { background: #3b82f6; color: white; border-color: #3b82f6; }
.hsk-tab { padding: 6px 14px; border-radius: 8px; border: 1px solid var(--border); background: transparent; color: var(--text-secondary); font-size: 13px; cursor: pointer; }
.hsk-tab.active { background: var(--border); color: var(--text); border-color: #475569; }

/* English translation */
.reader-english-box { background: var(--bg-alt); border: 1px solid var(--border); border-radius: 12px; padding: 14px; margin-bottom: 12px; }

/* Toolbar */
.reader-tool-btn { background: var(--bg-card); color: var(--text-secondary); border: 1px solid var(--border); border-radius: 8px; padding: 8px 14px; font-size: 13px; cursor: pointer; transition: all 0.2s; }
.reader-tool-btn.active { background: #3b82f6; color: white; border-color: #3b82f6; }

/* Vocab list */
.reader-vocab-section { margin-top: 12px; }
.vocab-item { display: flex; align-items: center; gap: 12px; padding: 8px 12px; border-bottom: 1px solid var(--border); cursor: pointer; font-size: 14px; }
.vocab-item:hover { background: var(--bg-card); border-radius: 8px; }
.vocab-word { font-size: 18px; min-width: 60px; font-weight: 500; }
.vocab-pinyin { color: #22c55e; font-size: 13px; min-width: 80px; }
.vocab-def { color: var(--text-secondary); font-size: 13px; flex: 1; }
.vocab-hsk { color: var(--text-muted); font-size: 11px; }

@media (max-width: 480px) { .story-grid { grid-template-columns: 1fr; } }
  .vocab-save-btn { background: var(--border); color: var(--text); border: 1px solid #475569; border-radius: 6px; padding: 4px 10px; font-size: 11px; cursor: pointer; white-space: nowrap; }
  .vocab-save-btn:hover { background: #3b82f6; border-color: #3b82f6; }

/* ── Dark Mode Specific Overrides ── */
body.dark-mode .welcome-banner { background: linear-gradient(135deg, #1e293b, #1a1f35); }
body.dark-mode .brand { background: linear-gradient(135deg, #1e293b, #334155); -webkit-background-clip: text; background-clip: text; }
body.dark-mode .cta-btn.secondary { color: #1e293b; }
body.dark-mode .landing-feat { background: white; }
body.dark-mode .talk-bar { background: linear-gradient(135deg, #0f172a, #131d33); }
body.dark-mode .lesson-card { background: linear-gradient(135deg, #1e293b, #1a2332); }
body.dark-mode .lesson-detail-hero { background: linear-gradient(135deg, #1e293b, #1a2332); }
body.dark-mode .fc-add-panel { background: linear-gradient(135deg, #1e293b, #1a2332); }
body.dark-mode .fc-card-front { background: linear-gradient(135deg, #1e3a5f, #1e293b); }
body.dark-mode .fc-card-back { background: linear-gradient(135deg, #2d1b4e, #1e293b); }
body.dark-mode .fc-quiz-card { background: linear-gradient(135deg, #1e293b, #1a2332); }
body.dark-mode .chunk-quiz-card { background: linear-gradient(135deg, #1e293b, #1a2332); }
body.dark-mode .chunk-speak-card { background: linear-gradient(135deg, #1e293b, #1a2332); }
body.dark-mode .chunk-speak-mic-btn { background: linear-gradient(135deg, #1e293b, #0f172a); }
body.dark-mode .speaktest-card { background: linear-gradient(135deg, #1e293b, #1a2332); }
body.dark-mode .speak-mic-btn { background: linear-gradient(135deg, #1e293b, #0f172a); }
body.dark-mode .progress-card { background: linear-gradient(135deg, #1e293b, #0f172a); }
body.dark-mode .onboarding-new { background: linear-gradient(135deg, #1e293b, #0f172a); border-color: #334155; }
body.dark-mode .auth-box { background: #1e293b; border: 1px solid #334155; }
body.dark-mode .auth-logo-name { color: #e2e8f0; }
body.dark-mode .auth-field { background: #0f172a; border-color: #334155; color: #e2e8f0; }
body.dark-mode .auth-overlay { background: rgba(0,0,0,0.6); }
body.dark-mode .dashboard-stat-card { background: #0f172a; }
body.dark-mode .record-btn { background: #0f172a; }
body.dark-mode .tone-btn { background: var(--bg-alt); }
body.dark-mode #page-home { background: linear-gradient(180deg, #0f172a, #1a1f35) !important; }
body.dark-mode #page-home .home-card { filter: brightness(0.9); }
body.dark-mode #page-home h1,
body.dark-mode #page-home h2,
body.dark-mode #page-home h3 { color: #e2e8f0 !important; }
body.dark-mode #page-home p { color: #94a3b8 !important; }
body.dark-mode #page-home strong { color: #fbbf24 !important; }
body.dark-mode #landing-screen { background: #0a0e1a !important; }
body.dark-mode #landing-screen h1,
body.dark-mode #landing-screen h2 { color: #e2e8f0 !important; }
body.dark-mode #landing-screen p { color: #94a3b8 !important; }
body.dark-mode .l-hero h1 { color: #e2e8f0 !important; }
body.dark-mode .l-hero p { color: #94a3b8 !important; }
body.dark-mode .l-why-card { background: #1e293b; border-color: #334155; }
body.dark-mode .l-why-card h2 { color: #e2e8f0; }
body.dark-mode .l-why-card p { color: #94a3b8; }
body.dark-mode .l-feat { background: #1e293b; border-color: #334155; }
body.dark-mode .l-feat h3 { color: #e2e8f0; }
body.dark-mode .l-feat p { color: #94a3b8; }
body.dark-mode .l-cta h2 { color: #e2e8f0; }
body.dark-mode .l-cta p { color: #94a3b8; }
body.dark-mode .l-header .l-btn-ghost { color: #94a3b8; }
body.dark-mode .l-header .l-btn-ghost:hover { background: #1e293b; color: #fbbf24; }
body.dark-mode .l-footer { border-top-color: #1e293b; }
body.dark-mode .l-how-card { background: #1e293b; border-color: #334155; }
body.dark-mode .l-how-card h3 { color: #e2e8f0; }
body.dark-mode .l-how-card p { color: #94a3b8; }
body.dark-mode .l-feat-card { background: #1e293b; border-color: #334155; }
body.dark-mode .l-feat-card.open { border-color: #fbbf24; }
body.dark-mode .l-feat-info h3 { color: #e2e8f0; }
body.dark-mode .l-feat-info p { color: #94a3b8; }
body.dark-mode .l-feat-detail p { color: #94a3b8; }
body.dark-mode .l-step { background: #1e293b; border-color: #334155; }
body.dark-mode .l-step h3 { color: #e2e8f0; }
body.dark-mode .l-tech-badge { filter: brightness(0.9); }
body.dark-mode .l-section-title { color: #e2e8f0; }
body.dark-mode .l-section-sub { color: #94a3b8; }
body.dark-mode .l-section-sub strong { color: #fbbf24; }
body.dark-mode .settings-scroll h2,
body.dark-mode .settings-scroll h3 { color: #e2e8f0 !important; }
  .progress-card.reading-card { background: linear-gradient(135deg, rgba(59,130,246,0.08), rgba(16,185,129,0.08)); }
  .progress-card.reading-card .pc-icon { color: #60a5fa; }