/* ============================================================
   DiploMate — Comprehensive Mobile Styles
   Applies to ALL pages. Included after all other CSS.
   ============================================================ */

/* ── Base mobile resets ──────────────────────────────────────── */
@media (max-width: 768px) {

  /* Prevent horizontal scroll */
  body { overflow-x: hidden; }

  /* ── Navbar ─────────────────────────────────────────────── */
  .navbar-inner { padding: 0 16px; }
  .navbar-logo svg { height: 28px; }
  .navbar-links { display: none; }
  .navbar-actions .btn { padding: 7px 12px; font-size: 0.78rem; }

  /* ── Hero section ────────────────────────────────────────── */
  .hero-section { padding: 80px 20px 40px; }
  .hero-content  { grid-template-columns: 1fr; gap: 24px; }
  .hero-title    { font-size: clamp(2rem, 8vw, 3rem); line-height: 1.15; }
  .hero-sub      { font-size: 0.9rem; }
  .hero-actions  { flex-direction: column; gap: 10px; }
  .hero-actions .btn { width: 100%; justify-content: center; padding: 14px 20px; }
  .hero-trust    { gap: 12px; }
  .trust-item    { min-width: 70px; }
  .trust-num     { font-size: 1.1rem; }

  /* ── Stats bar ───────────────────────────────────────────── */
  .stats-bar .container { flex-wrap: wrap; gap: 12px; padding: 16px; }
  .stats-bar-item { min-width: calc(50% - 8px); }

  /* ── Section headers ─────────────────────────────────────── */
  .section-header { padding: 0 4px; }
  .display-md { font-size: clamp(1.5rem, 6vw, 2rem); }
  .subtitle { font-size: 0.88rem; }

  /* ── Features grid ───────────────────────────────────────── */
  .features-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .feature-card  { padding: 18px 14px; }
  .feature-icon  { font-size: 1.5rem; }
  .feature-title { font-size: 0.82rem; }
  .feature-desc  { font-size: 0.76rem; display: none; }

  /* ── Pricing section ─────────────────────────────────────── */
  .plans-grid { grid-template-columns: 1fr; gap: 16px; }
  .plan-card  { padding: 22px; }
  .plan-price { font-size: 2.4rem; }

  /* ── How it works ────────────────────────────────────────── */
  .steps-grid { grid-template-columns: 1fr; gap: 14px; }

  /* ── News / CTA section ──────────────────────────────────── */
  .news-grid  { grid-template-columns: 1fr; }
  .cta-section { padding: 40px 20px; }
  .cta-actions { flex-direction: column; gap: 10px; }
  .cta-actions .btn { width: 100%; justify-content: center; }

  /* ── Footer ──────────────────────────────────────────────── */
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .footer-brand { grid-column: 1 / -1; }

  /* ── Global button touch targets ─────────────────────────── */
  .btn { min-height: 40px; }
  .btn-lg { padding: 14px 22px; font-size: 0.95rem; }

  /* ── ━━━ DASHBOARD ━━━ ──────────────────────────────────── */

  /* Sidebar collapses to slide-in on mobile */
  .dash-sidebar {
    transform: translateX(-100%);
    transition: transform 0.28s ease;
    z-index: 200;
  }
  .dash-sidebar.open { transform: translateX(0); }
  .dash-main { margin-left: 0 !important; }
  .sidebar-toggle { display: flex !important; }
  .sidebar-overlay.show { display: block; }

  /* Dashboard content */
  .dash-content { padding: 16px; }
  .dash-topbar  { padding: 0 16px; }

  /* Greeting banner */
  .greeting-banner { padding: 18px; flex-direction: column; gap: 14px; }
  .greeting-actions { flex-direction: column; gap: 8px; width: 100%; }
  .greeting-actions .btn { width: 100%; justify-content: center; }
  .greet-name { font-size: 1.5rem; }

  /* Stats — 2 columns on mobile */
  .stats-4 { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat-card { padding: 14px; }
  .stat-val  { font-size: 1.5rem; }

  /* Two-column → single column */
  .dash-two-col {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  /* Quick grid — 2 cols on mobile */
  .quick-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
  .quick-btn  { padding: 12px 8px; font-size: 0.78rem; gap: 6px; }

  /* Revenue cards on admin */
  .rev-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .rev-val  { font-size: 1.3rem; }

  /* ── ━━━ STUDY SIDEBAR (notes/practice) ━━━ ─────────────── */
  .study-sidebar {
    transform: translateX(-100%);
    width: 280px;
    z-index: 200;
  }
  .study-sidebar.open { transform: translateX(0); }
  .study-main  { margin-left: 0 !important; }
  .study-sidebar-toggle { display: flex !important; }

  /* Practice sidebar */
  .practice-sidebar {
    transform: translateX(-100%);
    z-index: 200;
  }
  .practice-sidebar.open { transform: translateX(0); }
  .practice-main { margin-left: 0 !important; }

  /* Notes body */
  .notes-body { padding: 20px 16px 60px; }
  .chapter-title { font-size: 1.4rem; }
  .notes-content h2 { font-size: 1rem; }
  .notes-content p  { font-size: 0.88rem; }

  /* Formula grid */
  .formula-sheet-grid { grid-template-columns: 1fr; }
  .fs-eq { font-size: 1.2rem; }

  /* Tools grid */
  .tool-inputs { grid-template-columns: 1fr; }

  /* ── ━━━ PRACTICE / MOCK TEST ━━━ ────────────────────────── */
  .question-area { padding: 16px 14px 80px; }
  .question-text { font-size: 0.95rem; }
  .options-grid  { gap: 8px; }
  .option-btn    { padding: 12px 14px; font-size: 0.86rem; }
  .option-letter { width: 24px; height: 24px; font-size: 0.7rem; }

  /* Mock test — hide right panel, show bottom nav */
  .mock-wrap { grid-template-columns: 1fr; }
  .mock-nav-panel { display: none; }
  .mock-question-area { padding: 16px 14px 80px; }

  /* Chapter nav arrows */
  .ch-nav-arrows {
    padding: 14px 16px;
    flex-direction: row;
    gap: 8px;
  }
  .nav-arrow { padding: 10px 14px; font-size: 0.8rem; flex: 1; justify-content: center; }

  /* Paywall overlay */
  .paywall-overlay { left: 0; padding-bottom: 70px; }
  .paywall-card { padding: 22px 18px; }
  .paywall-title { font-size: 1.1rem; }
  .paywall-actions { flex-direction: column; }
  .paywall-actions .btn { width: 100%; justify-content: center; }

  /* ── ━━━ PRICING PAGE ━━━ ────────────────────────────────── */
  .pricing-page { padding: 80px 16px 40px; }
  .checkout-box { padding: 18px; }
  .coupon-wrap  { flex-direction: column; }

  /* ── ━━━ DOUBT SOLVER ━━━ ────────────────────────────────── */
  .doubt-page { grid-template-columns: 1fr; }
  .doubt-sidebar { display: none; }
  .chat-messages { padding: 14px; }
  .chat-input-area { padding: 12px 14px 14px; }
  .suggested-grid { grid-template-columns: 1fr; }
  .msg-bubble { max-width: 95%; }

  /* ── ━━━ ANALYTICS / LEADERBOARD ━━━ ─────────────────────── */
  .analytics-grid, .analytics-grid-3 { grid-template-columns: 1fr; }
  .result-stats-grid { grid-template-columns: 1fr 1fr; }
  .lb-podium { gap: 8px; }
  .podium-item { max-width: 100px; }

  /* ── ━━━ PROGRESS / ROADMAP ━━━ ──────────────────────────── */
  .prog-grid { grid-template-columns: 1fr; }
  .ch-progress-grid { grid-template-columns: repeat(4,1fr); }
  .prog-steps { gap: 4px; overflow-x: auto; padding-bottom: 6px; }

  /* ── ━━━ TABLES ━━━ ──────────────────────────────────────── */
  .admin-table-wrap { overflow-x: auto; }
  .notes-table      { font-size: 0.78rem; }
  .notes-table th,
  .notes-table td   { padding: 7px 10px; }
  .comparison-table { font-size: 0.76rem; }
  .comparison-table th,
  .comparison-table td { padding: 8px 10px; }

  /* ── ━━━ FORMS ━━━ ───────────────────────────────────────── */
  .admin-form-grid { grid-template-columns: 1fr; }
  .input-row       { grid-template-columns: 1fr; }
  .admin-input, .form-input { font-size: 16px; } /* prevents iOS zoom */
  textarea { font-size: 16px; }

  /* ── ━━━ CONTACT / ABOUT / LEGAL ━━━ ─────────────────────── */
  .contact-grid { grid-template-columns: 1fr; }
  .value-grid   { grid-template-columns: 1fr 1fr; }
  .legal-page h1 { font-size: 1.5rem; }

  /* ── ━━━ ADMIN SIDEBAR ━━━ ───────────────────────────────── */
  .admin-sidebar {
    transform: translateX(-100%);
    z-index: 200;
    transition: transform 0.28s ease;
  }
  .admin-sidebar.open { transform: translateX(0); }

  /* ── ━━━ SALARY / JOBS / NEWS ━━━ ────────────────────────── */
  .salary-cards { grid-template-columns: 1fr; }
  .job-meta-grid { grid-template-columns: 1fr 1fr; }
  .news-card-big { flex-direction: column; }
  .news-card-icon { width: 40px; height: 40px; font-size: 1.3rem; }

  /* ── ━━━ NOTES / MY NOTES ━━━ ────────────────────────────── */
  .notes-layout { grid-template-columns: 1fr; }
  .notes-sidebar { position: static; max-height: 200px; overflow-y: auto; }
}

/* ── Small screens (≤480px) ──────────────────────────────────── */
@media (max-width: 480px) {
  .stats-4       { grid-template-columns: 1fr 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .footer-grid   { grid-template-columns: 1fr; }
  .value-grid    { grid-template-columns: 1fr; }
  .job-meta-grid { grid-template-columns: 1fr; }
  .salary-cards  { grid-template-columns: 1fr; }
  .rev-grid      { grid-template-columns: 1fr 1fr; }
  .ch-progress-grid { grid-template-columns: repeat(4,1fr); }
  .result-stats-grid { grid-template-columns: 1fr 1fr; }

  /* Full-width buttons on tiny screens */
  .greeting-actions .btn,
  .paywall-actions .btn,
  .cta-actions .btn { font-size: 0.88rem; }

  .plan-price { font-size: 2rem; }
  .hero-title { font-size: 1.9rem; }
}

/* ── Touch UX improvements ───────────────────────────────────── */
@media (hover: none) and (pointer: coarse) {
  /* Bigger tap targets for touch screens */
  .sidebar-link    { padding: 11px 12px; }
  .ch-nav-item     { padding: 10px 10px; }
  .option-btn      { padding: 14px 16px; }
  .btn             { min-height: 44px; }
  .tab-btn         { min-height: 44px; }

  /* Remove hover transforms on touch (feels buggy) */
  .exam-card:hover,
  .feature-card:hover,
  .plan-card:hover,
  .stat-card:hover { transform: none; }

  /* Better scroll on touch */
  .study-chapter-nav { -webkit-overflow-scrolling: touch; }
  .chat-messages     { -webkit-overflow-scrolling: touch; }
}

/* ── Bottom navigation bar for key pages ─────────────────────── */
.mobile-bottom-nav {
  display: none;
}

@media (max-width: 768px) {
  .mobile-bottom-nav {
    display: flex;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    background: var(--navy-mid);
    border-top: 1px solid var(--navy-border-2);
    z-index: 150;
    padding: 6px 0 env(safe-area-inset-bottom, 6px);
    backdrop-filter: blur(12px);
  }
  .mobile-bottom-nav a {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.6rem;
    font-weight: 600;
    padding: 4px 0;
    transition: color 0.2s;
    min-height: 44px;
  }
  .mobile-bottom-nav a.active { color: var(--mint); }
  .mobile-bottom-nav a:hover  { color: var(--mint); }
  .mobile-bottom-nav .nav-icon { font-size: 1.2rem; line-height: 1; }

  /* Prevent content hiding behind bottom nav */
  .dash-main,
  .study-main,
  .practice-main,
  .doubt-chat,
  .pyq-page,
  .mynotes.notes-page,
  .roadmap-page,
  .salary-page,
  .disc-page,
  .wrongbook-page,
  .analytics-page,
  .about-page,
  .contact-page,
  .legal-page,
  body > .pricing-page { padding-bottom: 72px !important; }
}

/* ── Sidebar overlay for mobile ─────────────────────────────── */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 199;
  backdrop-filter: blur(2px);
}
.sidebar-overlay.show { display: block; }