/*
 * mobile.css — Responsive breakpoints for Chalk
 * Shared across all pages. Fixes mobile layout regressions from clay/chalk rebrand.
 * Breakpoints: 768px (tablet), 480px (phone), 375px (small phone)
 */

/* ─── BASE (desktop defaults + overflow containment) ─── */
/* WHY: 100vw includes scrollbar width on iOS, making body wider than viewport.
   width:100% respects actual viewport. position:relative creates containing block
   so absolutely-positioned children (dropdowns, drawers) don't expand the viewport. */
html { overflow-x: hidden; }
body { overflow-x: hidden; width: 100%; position: relative; }
nav { overflow-x: hidden; } /* sticky nav must not push viewport wider */
.nav-logo-wordmark { display: none; }
.nav-logo-icon { display: inline-block; }

/* ─── TABLET / LARGE PHONE (≤768px) ─── */
@media (max-width: 768px) {

  /* ── Landing page (index.html) ── */
  .hero { padding: 48px 0 40px; }
  .hero h1 { font-size: 2.2rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn-primary-lg,
  .hero-actions .btn-ghost-lg { width: 100%; justify-content: center; text-align: center; }
  .hero-stats { gap: 20px; }
  .hero-sub { font-size: 1rem; }

  .sigma-bar-inner { gap: 16px; }
  .sigma-num { font-size: 1.8rem; }

  .adaptive { padding: 56px 0; }
  .adaptive-grid { grid-template-columns: 1fr; gap: 28px; }
  .adaptive-callout { padding: 28px; }

  .drills { padding: 56px 0; }
  .drill-cards-grid { grid-template-columns: 1fr; }
  .drills-header { flex-direction: column; align-items: flex-start; }
  .drills-sub { text-align: left; max-width: 100%; }

  .pain { padding: 56px 0; }
  .pain-table { overflow-x: auto; -webkit-overflow-scrolling: touch; max-width: 100%; }
  .pain-row { min-width: 520px; }

  .how { padding: 56px 0; }
  .how-steps { grid-template-columns: 1fr; }

  .pricing { padding: 56px 0; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 100%; }

  .faq { padding: 56px 0; }
  .faq-grid { grid-template-columns: 1fr; }

  .founder { padding: 56px 0; }
  .founder-inner { grid-template-columns: 1fr; gap: 32px; }

  .closing { padding: 56px 0 48px; }
  .closing-actions { flex-direction: column; align-items: center; }

  .footer-inner { flex-direction: column; gap: 8px; text-align: center; }

  /* ── Nav logo swap: wordmark on mobile, icon on desktop ── */
  .nav-logo-icon { display: none; }
  .nav-logo-wordmark { display: inline-block; }

  /* ── Landing nav ── */
  .nav-cta { gap: 4px; }
  .nav-link { padding: 6px 10px; font-size: 0.82rem; }
  .btn-primary { padding: 10px 18px; font-size: 0.85rem; }

  /* ── Pricing page (pricing.html) ── */
  .pricing-hero { padding: 56px 0 48px; }
  .pricing-hero h1 { font-size: 2rem; }
  .stats-row { flex-wrap: wrap; gap: 16px; }
  .stat-item { min-width: 100px; }
  .comparison-table { overflow-x: auto; -webkit-overflow-scrolling: touch; }

  /* ── App dashboard (app.html) ── */
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .nav-user { display: none; }
  .nav-right { gap: 8px; }
  .drill-card { padding: 24px; }
  .daily-bar { flex-wrap: wrap; gap: 10px; padding: 14px 18px; }
  .daily-info { flex-wrap: wrap; }

  .scenario-item { padding: 16px 18px; }
  .scenario-left { gap: 10px; }
  .scenario-title { font-size: 0.9rem; }

  /* Pathway */
  .pathway-row:nth-child(odd) { padding-left: 8px; }
  .pathway-row:nth-child(even) { padding-right: 8px; }
  .pathway-node { width: 240px; }
  .node-circle { width: 72px; height: 72px; }
  .node-circle-icon { font-size: 1.6rem; }
  .pathway-header { flex-wrap: wrap; gap: 12px; }
  .pathway-header-stats { gap: 14px; }
  .pathway-stat-value { font-size: 1.3rem; }

  /* App tabs — max-width prevents flex children from expanding parent beyond viewport */
  .app-tabs { overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; max-width: 100%; }
  .app-tabs::-webkit-scrollbar { display: none; }
  .app-tab { white-space: nowrap; padding: 10px 14px; font-size: 0.8rem; }

  /* Analytics */
  .pa-stats-row { grid-template-columns: repeat(3, 1fr); }
  .pa-chart-grid { grid-template-columns: 1fr; }
  .analytics-stats-row { grid-template-columns: repeat(2, 1fr); }

  /* Result banners */
  .result-banner { flex-wrap: wrap; gap: 10px; padding: 16px 18px; }
  .score-banner { flex-wrap: wrap; gap: 14px; padding: 16px 18px; }

  /* Limit modal */
  .limit-content { padding: 36px 28px; margin: 16px; }

  /* Voice recorder */
  .voice-recorder { padding: 22px 18px; }
  .rec-timer { font-size: 2rem; }

  /* BYOC paywall */
  .byoc-paywall { padding: 40px 20px; }

  /* Node drawer */
  .node-drawer { width: 260px; }

  /* Sorting drill — stack at tablet for better readability */
  .sorting-layout { flex-direction: column; }
  .sorting-items-pool,
  .sorting-categories { min-width: 0; width: 100%; }
}

/* ─── PHONE (≤480px) ─── */
@media (max-width: 480px) {

  /* ── Global ── */
  .container { padding: 0 16px; max-width: 100%; }

  /* ── Landing page ── */
  .hero { padding: 36px 0 28px; }
  .hero h1 { font-size: 1.8rem; line-height: 1.1; }
  .hero-sub { font-size: 0.92rem; }
  .hero-label { font-size: 0.65rem; padding: 6px 12px; margin-bottom: 20px; }
  .hero-stats { gap: 16px; flex-wrap: wrap; }
  .hero-stat-num { font-size: 1.3rem; }

  .sigma-bar { padding: 20px 0; }
  .sigma-num { font-size: 1.5rem; }
  .sigma-text strong { font-size: 0.82rem; }
  .sigma-text span { font-size: 0.75rem; }

  .section-label { font-size: 0.65rem; }
  .adaptive h2, .drills h2, .pain h2, .how h2, .pricing h2, .faq h2, .founder h2 {
    font-size: 1.5rem;
  }

  .adaptive { padding: 40px 0; }
  .adaptive-step { padding: 20px; }
  .adaptive-step-num { font-size: 0.6rem; padding: 4px 8px; }
  .adaptive-callout { padding: 22px; }
  .adaptive-callout-quote { font-size: 1rem; }

  .drills { padding: 40px 0; }
  .drill-card { padding: 22px; }
  .drill-tag { font-size: 0.6rem; }
  .drill-question { font-size: 0.92rem; }
  .drill-option { padding: 10px 12px; }

  .pain { padding: 40px 0; }
  .how { padding: 40px 0; }
  .how-step { padding: 26px 22px; }

  .pricing { padding: 40px 0; }
  .pricing-card { padding: 28px 22px; }
  .pricing-price { font-size: 2.2rem; }

  .faq { padding: 40px 0; }
  .faq-item { padding: 20px; }
  .faq-q { font-size: 0.88rem; }
  .faq-a { font-size: 0.82rem; }

  .founder { padding: 40px 0; }
  .founder-stats { grid-template-columns: 1fr 1fr; gap: 10px; }
  .founder-stat { padding: 16px; }
  .founder-stat-num { font-size: 1.15rem; }

  .closing { padding: 48px 0 40px; }
  .closing h2 { font-size: 1.8rem; }
  .closing-sub { font-size: 0.9rem; }

  .btn-primary-lg { padding: 14px 24px; font-size: 0.95rem; }
  .btn-ghost-lg { padding: 13px 24px; font-size: 0.95rem; }

  /* ── Landing nav ── */
  nav { padding: 12px 0; }
  .logo-text { font-size: 1.15rem; }
  .logo-mark { width: 32px; height: 32px; font-size: 0.9rem; }
  .nav-link { display: none; }
  .nav-link.nav-login { display: inline-flex; }
  .nav-cta .btn-primary { padding: 9px 16px; font-size: 0.82rem; }

  /* ── Pricing page ── */
  .pricing-hero h1 { font-size: 1.6rem; }
  .pricing-hero-sub { font-size: 0.88rem; }

  /* ── Diagnostic page ── */
  .screen { padding: 20px 16px; }
  .intro-title { font-size: 1.4rem; }
  .q-text { font-size: 0.95rem; }
  .opt-btn { padding: 14px 16px; font-size: 0.88rem; }

  /* ── Auth pages (login/signup) ── */
  .auth-card { padding: 28px 22px; }
  .auth-card h2 { font-size: 1.3rem; }
  .auth-card .subtitle { font-size: 0.85rem; margin-bottom: 20px; }
  .form-group input { padding: 12px 14px; font-size: 16px; }
  .btn-submit { font-size: 0.95rem; }

  /* ── App dashboard ── */
  .nav-inner { padding: 0 16px; }
  .nav-right { gap: 6px; }
  .nav-level-badge { font-size: 0.65rem; padding: 2px 7px; }
  .nav-xp { font-size: 0.8rem; }
  .btn-logout { padding: 5px 10px; font-size: 0.75rem; }
  .btn-retake-baseline { padding: 5px 10px; font-size: 0.72rem; }
  .lb-row { padding: 8px 10px; gap: 8px; }
  .lb-name { font-size: 0.82rem; }
  .lb-level-pill { font-size: 0.62rem; padding: 2px 6px; }
  .lb-xp { font-size: 0.72rem; min-width: 50px; }

  .stats-bar { gap: 8px; margin: 20px 0; }
  .stat-card { padding: 14px 10px; }
  .stat-value { font-size: 1.4rem; }
  .stat-label { font-size: 0.68rem; }

  .daily-bar { padding: 12px 14px; }
  .daily-text { font-size: 0.78rem; }

  .track-header h2 { font-size: 1.3rem; }
  .scenario-item { padding: 14px 16px; }
  .scenario-title { font-size: 0.85rem; }
  .scenario-diff { font-size: 0.6rem; }

  .drill-card { padding: 18px; }
  .drill-title { font-size: 1.2rem; }
  .drill-description { font-size: 0.88rem; }
  .drill-question { font-size: 0.95rem; }
  .drill-option { padding: 14px 16px; }
  .option-text { font-size: 0.85rem; }
  .btn-next { padding: 12px 22px; font-size: 0.92rem; width: 100%; justify-content: center; }

  /* Pathway */
  .pathway-node { width: 200px; }
  .node-circle { width: 60px; height: 60px; }
  .node-circle-icon { font-size: 1.3rem; }
  .node-info { max-width: 180px; }
  .node-title { font-size: 0.85rem; }
  .node-subtitle { font-size: 0.7rem; }
  .pathway-daily-pill { padding: 6px 10px; }
  .pathway-daily-text { font-size: 0.72rem; }
  .pathway-stat-value { font-size: 1.1rem; }

  /* App tabs */
  .app-tabs { margin-bottom: 20px; }
  .app-tab { padding: 8px 10px; font-size: 0.75rem; }

  /* Analytics */
  .pa-stats-row { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .pa-stat-value { font-size: 1.4rem; }
  .pa-table-card { font-size: 0.78rem; }
  .pa-table-card th, .pa-table-card td { padding: 8px 10px; }
  .analytics-stat { padding: 12px; }
  .analytics-stat-value { font-size: 1.3rem; }

  /* Voice area */
  .voice-recorder { padding: 18px 14px; border-radius: 14px; }
  .btn-record { width: 56px; height: 56px; }
  .rec-timer { font-size: 1.8rem; }

  .btn-submit-voice { padding: 10px 18px; font-size: 0.88rem; }

  /* Modals */
  .limit-content { padding: 28px 20px; max-width: 100%; }
  .limit-content h2 { font-size: 1.25rem; }
  .limit-content p { font-size: 0.88rem; }
  .btn-upgrade { padding: 12px 24px; font-size: 0.92rem; }

  /* Score banner */
  .score-banner { padding: 14px 16px; }
  .score-circle { width: 48px; height: 48px; }
  .score-number { font-size: 0.95rem; }
  .score-details h3 { font-size: 0.88rem; }
  .score-details p { font-size: 0.78rem; }

  /* Coaching structured card */
  .coaching-row { gap: 8px; }
  .coaching-text { font-size: 0.8rem; }

  /* Node drawer */
  .node-drawer { width: 220px; }
  .node-drawer-title { font-size: 0.92rem; }

  /* Mapping drill — tighter spacing */
  .mapping-spacer { flex: 0 0 20px; }
  .mapping-item { padding: 9px 11px; font-size: 0.82rem; }
  .mapping-col { padding: 0 4px; }

  /* Calculation drill — stack given grid */
  .calc-given-grid { grid-template-columns: 1fr; gap: 4px; }
  .calc-step { padding: 12px 14px; }

  /* Scenario drill */
  .scenario-branch { padding: 12px 14px; gap: 10px; }

  /* Level-up card */
  .levelup-card { padding: 28px 24px; }

  /* BYOC areas */
  .byoc-upload-area { padding: 32px 16px; }
  .byoc-paywall { padding: 32px 16px; }
  .byoc-processing { padding: 40px 16px; }
  .byoc-ready { padding: 28px 20px; }
  .byoc-results { padding: 28px 16px; }

  /* Session drill items — prevent overflow on flex children */
  .result-banner { padding: 14px 16px; gap: 10px; }
  .explanation-card { padding: 14px 16px; }
  .coaching-structured-card { padding: 14px 16px; }

  /* Percentile circle — shrink for phone */
  .analytics-percentile { gap: 14px; padding: 16px; flex-wrap: wrap; }
  .percentile-circle { width: 60px; height: 60px; }
  .percentile-num { font-size: 1.1rem; }

  /* Promo input — let it flex instead of fixed width */
  .promo-input { width: auto; flex: 1; min-width: 0; }
}

/* ─── PHONE ≤430px (iPhone 14 Pro Max and smaller) ─── */
/* WHY: 430px is the widest common phone width. Elements that just squish
   at 480px need to hide or reflow entirely here for comfortable one-hand use. */
@media (max-width: 430px) {

  /* ── Nav: strip non-essential items to logo + streak + bell + profile ── */
  /* WHY: At 430px the nav-right row overflows if XP text and retake button are visible */
  .nav-xp { display: none; }
  .nav-level-badge { display: none; }
  .btn-retake-baseline { display: none !important; } /* !important: JS may set inline display */
  .nav-right { gap: 4px; }
  .nav-inner { padding: 0 12px; }

  /* ── Profile dropdown: cap width so it never clips on narrow screens ── */
  /* WHY: JS sets `right` dynamically; on 390px screens min-width: 200px can clip if button
     sits in a crowded nav. Cap and ensure left boundary stays within viewport. */
  .profile-dropdown {
    min-width: 0;
    width: 200px;
    max-width: calc(100vw - 16px);
  }

  /* ── Notif dropdown: same cap ── */
  .notif-dropdown {
    min-width: 0;
    width: 280px;
    max-width: calc(100vw - 16px);
  }

  /* ── Drill card: ensure all text inputs and textareas stay within card ── */
  .drill-card input[type="text"],
  .drill-card input[type="number"],
  .drill-card textarea { max-width: 100%; width: 100%; box-sizing: border-box; }

  /* Calc step inputs */
  .calc-step-input { max-width: 100%; }

  /* ── App tabs: reduce to minimum to avoid overflow ── */
  .app-tabs { gap: 0; padding-bottom: 0; }
  .app-tab { padding: 8px 9px; font-size: 0.73rem; }

  /* ── BYOC / Course Builder: full-width forms ── */
  .byoc-upload-area { max-width: 100%; padding: 28px 14px; }
  .byoc-file-preview { max-width: 100%; }
  .bldr-card { border-radius: 12px; }
  .bldr-input-pane { padding: 16px 16px 0; }
  .bldr-generate-row { padding: 14px 16px 18px; flex-direction: column; align-items: stretch; }
  .bldr-btn-generate { width: 100%; justify-content: center; }
  #bldrPromptInput { font-size: 16px; } /* WHY: 16px prevents iOS auto-zoom on focus */
  #bldrUploadPrompt { font-size: 16px; max-width: 100%; width: 100%; box-sizing: border-box; }

  /* ── Auth inputs: 16px prevents iOS zoom ── */
  .form-group input { font-size: 16px; }

  /* ── Hero drill card ── */
  #heroDrillCard { padding: 18px 14px 16px; }
  #heroDrillTitle { font-size: 1.05rem; }

  /* ── Leaderboard ── */
  .lb-row { padding: 8px 10px; gap: 6px; }
  .lb-xp { min-width: 44px; }

  /* ── Invite modal: stack email row vertically ── */
  .invite-email-row { flex-direction: column; }
  .btn-invite-send { width: 100%; }

  /* ── Sorting layout ── */
  .sorting-layout { gap: 10px; }
}

/* ─── SMALL PHONE (≤375px) ─── */
@media (max-width: 375px) {

  /* ── Global ── */
  .container { padding: 0 10px; max-width: 100%; }

  /* ── Nav: swap back to icon logo to save ~86px of width ── */
  .nav-logo-wordmark { display: none !important; }
  .nav-logo-icon { display: inline-block !important; }

  /* ── Nav items: tighter spacing ── */
  .nav-inner { padding: 0 10px; }
  .nav-right { gap: 4px; }
  .nav-level-badge { font-size: 0.6rem; padding: 2px 6px; }
  .nav-xp { font-size: 0.72rem; }
  .btn-logout { padding: 4px 8px; font-size: 0.7rem; }
  .btn-retake-baseline { padding: 4px 8px; font-size: 0.65rem; }
  .lb-level-pill { display: none; }

  /* ── Landing page ── */
  .hero { padding: 28px 0 24px; }
  .hero h1 { font-size: 1.45rem; }
  .hero-sub { font-size: 0.88rem; }
  .hero-stat-num { font-size: 1.1rem; }
  .hero-stat-label { font-size: 0.72rem; }
  .hero-label { font-size: 0.6rem; padding: 5px 10px; }

  .adaptive h2, .drills h2, .pain h2, .how h2, .pricing h2, .faq h2, .founder h2 {
    font-size: 1.3rem;
  }

  .adaptive-step { padding: 16px; }
  .adaptive-callout { padding: 18px; }
  .adaptive-callout-quote { font-size: 0.92rem; }

  .drills { padding: 32px 0; }
  .drill-tag { font-size: 0.58rem; }
  .drill-option { padding: 10px 12px; }

  .how-step { padding: 22px 18px; }

  .btn-primary-lg { padding: 12px 20px; font-size: 0.88rem; }
  .btn-ghost-lg { padding: 11px 20px; font-size: 0.88rem; }

  .closing h2 { font-size: 1.5rem; }
  .closing-sub { font-size: 0.85rem; }

  .footer-inner { padding: 0 10px; font-size: 0.78rem; }

  /* ── Pricing page ── */
  .pricing-card { padding: 22px 14px; }
  .pricing-price { font-size: 1.8rem; }
  .pricing-features li { font-size: 0.82rem; }

  /* ── Auth pages ── */
  .auth-container { padding: 0 12px; }
  .auth-card { padding: 22px 16px; border-radius: 16px; }
  .auth-card h2 { font-size: 1.2rem; }

  /* ── Diagnostic page ── */
  .screen { padding: 16px 10px; }
  .intro-title { font-size: 1.3rem; }
  .q-text { font-size: 0.9rem; }
  .option { padding: 12px 14px; font-size: 0.88rem; }
  .score-chip { padding: 8px 12px; font-size: 0.8rem; }

  /* ── App dashboard ── */
  .stats-bar { gap: 6px; }
  .stat-card { padding: 10px 6px; border-radius: 12px; }
  .stat-value { font-size: 1.1rem; }
  .stat-label { font-size: 0.62rem; letter-spacing: 0.5px; }

  .daily-bar { padding: 10px 12px; gap: 8px; }
  .daily-text { font-size: 0.72rem; }
  .daily-dots { gap: 4px; }
  .daily-dot { width: 10px; height: 10px; }

  .app-tabs { margin-bottom: 16px; gap: 2px; }
  .app-tab { padding: 6px 8px; font-size: 0.68rem; }
  .app-tab-badge { font-size: 0.48rem; padding: 1px 4px; margin-left: 3px; }

  .track-header h2 { font-size: 1.2rem; }
  .scenario-item { padding: 12px 14px; border-radius: 12px; }
  .scenario-title { font-size: 0.82rem; }
  .scenario-left { gap: 8px; }
  .scenario-num { font-size: 0.7rem; width: 20px; }
  .scenario-diff { font-size: 0.55rem; padding: 2px 6px; }
  .scenario-right { gap: 8px; }
  .scenario-xp { font-size: 0.72rem; }

  /* ── Drill card ── */
  .drill-card { padding: 14px; border-radius: 14px; }
  .drill-title { font-size: 1.05rem; }
  .drill-description { font-size: 0.84rem; padding-bottom: 16px; margin-bottom: 16px; }
  .drill-question { font-size: 0.9rem; }
  .drill-difficulty { font-size: 0.62rem; padding: 3px 8px; }
  .drill-option { padding: 12px 14px; border-radius: 12px; }
  .option-letter { font-size: 0.78rem; min-width: 20px; }
  .option-text { font-size: 0.82rem; }
  .btn-next { padding: 11px 18px; font-size: 0.88rem; }

  /* ── Result banners ── */
  .result-banner { padding: 12px; gap: 8px; border-radius: 10px; }
  .result-icon { font-size: 1.2rem; }
  .result-text h3 { font-size: 0.88rem; }
  .result-text p { font-size: 0.78rem; }
  .result-xp { font-size: 0.95rem; }
  .explanation-card { padding: 12px 14px; border-radius: 8px; }
  .explanation-label { font-size: 0.7rem; }
  .explanation-text { font-size: 0.8rem; }

  /* ── Coaching cards ── */
  .coaching-structured-card { padding: 12px 14px; gap: 10px; }
  .coaching-row { gap: 6px; }
  .coaching-icon { font-size: 0.88rem; }
  .coaching-label { font-size: 0.65rem; }
  .coaching-text { font-size: 0.78rem; }

  /* ── Score banner ── */
  .score-banner { padding: 12px 14px; gap: 10px; }
  .score-circle { width: 44px; height: 44px; }
  .score-number { font-size: 0.88rem; }
  .score-details h3 { font-size: 0.82rem; }
  .score-details p { font-size: 0.72rem; }

  /* ── Mapping drill ── */
  .mapping-spacer { flex: 0 0 12px; }
  .mapping-item { padding: 7px 8px; font-size: 0.78rem; border-radius: 8px; }
  .mapping-col { padding: 0 2px; gap: 8px; }
  .mapping-col-label { font-size: 0.62rem; }
  .mapping-hint { font-size: 0.72rem; }
  .mapping-clear-btn { font-size: 0.72rem; padding: 5px 10px; }
  .btn-submit-mapping { padding: 10px 20px; font-size: 0.88rem; }
  .mapping-connection-count { font-size: 0.72rem; }

  /* ── Scenario drill ── */
  .scenario-branch { padding: 10px 12px; gap: 8px; border-radius: 7px; }
  .scenario-branch .branch-letter { font-size: 0.78rem; min-width: 18px; }
  .scenario-branch .branch-text { font-size: 0.84rem; }
  .scenario-consequence { padding: 10px 12px; }
  .scenario-consequence .consequence-label { font-size: 0.65rem; }
  .scenario-consequence .consequence-text { font-size: 0.82rem; }
  .scenario-coaching { padding: 10px 12px; }
  .scenario-coaching .coaching-label { font-size: 0.65rem; }
  .scenario-coaching .coaching-text { font-size: 0.82rem; }

  /* ── Sorting drill ── */
  .sorting-layout { gap: 12px; }
  .sorting-pool-label { font-size: 0.65rem; }
  .sorting-item { padding: 8px 12px; font-size: 0.82rem; }
  .sorting-cat-label { font-size: 0.72rem; }
  .sorting-category { padding: 10px 12px; min-height: 60px; }
  .sorting-cat-item { padding: 6px 10px; font-size: 0.8rem; }
  .sorting-item-explanation { font-size: 0.72rem; }
  .btn-submit-sorting { padding: 10px 20px; font-size: 0.88rem; }

  /* ── Calculation drill ── */
  .calc-given-block { padding: 10px 12px; }
  .calc-given-label { font-size: 0.65rem; }
  .calc-given-row { font-size: 0.82rem; }
  .calc-step { padding: 10px 12px; }
  .calc-step-label { font-size: 0.84rem; }
  .calc-step-hint { font-size: 0.75rem; }
  .calc-step-input { padding: 7px 10px; font-size: 0.88rem; }
  .calc-step-prefix { font-size: 0.88rem; }
  .calc-step-suffix { font-size: 0.78rem; }
  .calc-step-result { font-size: 0.78rem; padding: 5px 8px; }
  .btn-submit-calc { padding: 10px 18px; font-size: 0.88rem; }

  /* ── Pathway ── */
  .pathway-row:nth-child(odd) { padding-left: 4px; }
  .pathway-row:nth-child(even) { padding-right: 4px; }
  .pathway-node { width: 160px; }
  .node-circle { width: 48px; height: 48px; }
  .node-circle-icon { font-size: 1rem; }
  .node-info { max-width: 150px; }
  .node-title { font-size: 0.78rem; }
  .node-subtitle { font-size: 0.65rem; }
  .pathway-daily-pill { padding: 5px 8px; }
  .pathway-daily-text { font-size: 0.65rem; }
  .pathway-stat-value { font-size: 1rem; }
  .pathway-header-stats { gap: 10px; }

  /* ── Node drawer ── */
  .node-drawer { width: 200px; }
  .node-drawer-title { font-size: 0.85rem; }
  .node-drill-item { padding: 10px 12px; }
  .node-drill-item-title { font-size: 0.82rem; }
  .node-drill-item-xp { font-size: 0.65rem; }

  /* ── Voice recorder ── */
  .voice-recorder { padding: 14px 10px; border-radius: 12px; }
  .btn-record { width: 50px; height: 50px; }
  .rec-timer { font-size: 1.5rem; }
  .voice-prompt-hint { font-size: 0.78rem; }

  .btn-submit-voice { padding: 10px 16px; font-size: 0.84rem; }

  /* ── Analytics ── */
  .pa-stats-row { grid-template-columns: 1fr 1fr; gap: 6px; }
  .pa-stat-card { padding: 12px 10px; }
  .pa-stat-label { font-size: 0.62rem; }
  .pa-stat-value { font-size: 1.2rem; }
  .pa-chart-card { padding: 14px 12px; }
  .pa-chart-title { font-size: 0.82rem; }
  .pa-streak-bucket { min-width: 70px; padding: 10px 8px; }
  .pa-streak-bucket-num { font-size: 1.2rem; }
  .pa-table-card th, .pa-table-card td { padding: 6px 8px; font-size: 0.72rem; }
  .analytics-stat { padding: 10px; }
  .analytics-stat-value { font-size: 1.1rem; }
  .analytics-percentile { gap: 12px; padding: 14px; }
  .percentile-circle { width: 52px; height: 52px; }
  .percentile-num { font-size: 1rem; }
  .percentile-text h3 { font-size: 0.85rem; }
  .percentile-text p { font-size: 0.75rem; }

  /* ── Modals ── */
  .limit-content { padding: 22px 14px; margin: 10px; border-radius: 18px; }
  .limit-content h2 { font-size: 1.15rem; }
  .limit-content p { font-size: 0.82rem; }
  .limit-icon { font-size: 2.4rem; }
  .btn-upgrade { padding: 11px 20px; font-size: 0.88rem; }
  .promo-input { width: auto; flex: 1; min-width: 0; font-size: 0.82rem; }
  .promo-input-row { flex-wrap: wrap; }
  .btn-promo-apply { font-size: 0.78rem; padding: 6px 10px; }

  /* ── Level-up overlay ── */
  .levelup-card { padding: 24px 18px; max-width: 320px; border-radius: 16px; }
  .levelup-badge { font-size: 2.5rem; }
  .levelup-title { font-size: 1.4rem; }
  .levelup-sub { font-size: 0.85rem; }

  /* ── BYOC areas ── */
  .byoc-paywall { padding: 28px 14px; }
  .byoc-paywall h2 { font-size: 1.2rem; }
  .byoc-paywall p { font-size: 0.82rem; }
  .byoc-upload-area { padding: 28px 14px; }
  .byoc-upload-title { font-size: 0.9rem; }
  .byoc-upload-sub { font-size: 0.78rem; }
  .byoc-processing { padding: 36px 14px; }
  .byoc-ready { padding: 24px 16px; }
  .byoc-ready h3 { font-size: 1.1rem; }
  .byoc-ready-meta { gap: 16px; flex-wrap: wrap; }
  .byoc-results { padding: 24px 14px; }
  .byoc-results-score { font-size: 3rem; }
  .byoc-assess-option { padding: 12px 14px; font-size: 0.82rem; }
  .byoc-file-preview { padding: 12px 14px; gap: 10px; }
  .btn-byoc-upgrade { padding: 12px 20px; font-size: 0.85rem; }
  .btn-byoc-submit { padding: 12px 20px; font-size: 0.85rem; }
  .btn-byoc-browse { padding: 6px 14px; font-size: 0.78rem; }

  /* ── Custom tracks ── */
  .custom-track-card { padding: 12px; gap: 10px; }
  .custom-track-name { font-size: 0.82rem; }
  .custom-track-sub { font-size: 0.72rem; }
  .custom-track-icon { font-size: 1.2rem; }

  /* ── Session summary / review queue ── */
  .review-badge, .session-badge { font-size: 0.7rem; padding: 3px 8px; }
}

/* ─── TOUCH TARGETS ─── */
/* Ensure all interactive elements meet 44px minimum tap target */
@media (pointer: coarse) {
  .drill-option { min-height: 44px; }
  .opt-btn { min-height: 44px; }
  .btn-primary, .btn-primary-lg, .btn-ghost-lg, .btn-submit,
  .btn-next, .btn-upgrade, .btn-logout, .btn-retake-baseline,
  .btn-grade, .btn-submit-voice, .btn-record,
  .btn-rerecord, .app-tab, .nav-link { min-height: 44px; }
  .scenario-item { min-height: 56px; }
  .sorting-item { min-height: 44px; }
  .sorting-category { min-height: 56px; }
  .mapping-item { min-height: 44px; }
  .scenario-branch { min-height: 44px; }
  .calc-step-input { min-height: 44px; }
}