/* =====================================================
   MOBILE.CSS — GeoLearn PWA
   Overrides for screens ≤ 768px
   ===================================================== */

:root {
  --bottom-nav-height: 64px;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

/* =====================================================
   BOTTOM NAVIGATION BAR
   ===================================================== */
#bottom-nav {
  display: none;
}

#quiz-bottom-sheet {
  display: none;
}

@media (max-width: 768px) {

  /* ── Show bottom nav ── */
  #bottom-nav {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(var(--bottom-nav-height) + var(--safe-bottom));
    padding-bottom: var(--safe-bottom);
    background: rgba(10, 15, 30, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--border);
    z-index: 1000;
    align-items: stretch;
  }

  .bn-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    color: var(--text-muted);
    text-decoration: none;
    background: none;
    border: none;
    font-family: var(--font);
    cursor: pointer;
    transition: color 0.18s ease;
    padding: 8px 2px;
    -webkit-tap-highlight-color: transparent;
    position: relative;
  }
  .bn-item:active { opacity: 0.65; }
  .bn-item.active { color: var(--accent-light); }
  .bn-item.active .bn-icon { transform: scale(1.12); }

  .bn-icon {
    font-size: 1.3rem;
    line-height: 1;
    transition: transform 0.18s ease;
    display: block;
  }
  .bn-label {
    font-size: 0.58rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    white-space: nowrap;
    line-height: 1;
  }

  /* ── Center quiz FAB ── */
  .bn-quiz { position: relative; }
  .bn-quiz-active-indicator {
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--accent-light);
    display: none;
  }
  .bn-quiz.active .bn-quiz-active-indicator { display: block; }

  .bn-icon-wrap {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(79, 99, 255, 0.5);
    margin-top: -16px;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
  }
  .bn-quiz:active .bn-icon-wrap {
    transform: scale(0.92);
    box-shadow: 0 2px 10px rgba(79, 99, 255, 0.35);
  }
  .bn-quiz .bn-icon {
    font-size: 1.4rem;
    transform: none !important;
  }

  /* Notification dot */
  .bn-item.has-notif::after {
    content: '';
    position: absolute;
    top: 8px;
    right: calc(50% - 16px);
    width: 7px;
    height: 7px;
    background: #e74c3c;
    border-radius: 50%;
    border: 2px solid #0a0f1e;
  }

  /* ── Top navbar: minimal on mobile ── */
  #navbar {
    padding: 0 1rem;
  }
  .nav-links {
    display: none !important;
  }
  .nav-toggle {
    display: none !important;
  }
  .nav-right {
    padding-left: 0;
    border-left: none;
  }

  /* ── Adjust main content ── */
  #app {
    padding-bottom: calc(var(--bottom-nav-height) + var(--safe-bottom) + 0.5rem);
  }

  /* ── Toast above bottom nav ── */
  #toast-container {
    bottom: calc(var(--bottom-nav-height) + var(--safe-bottom) + 0.75rem);
    right: 1rem;
    left: 1rem;
    align-items: center;
  }

  /* Safe area insets for notch/home indicator */
  #bottom-nav {
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
  }
}

/* =====================================================
   QUIZ BOTTOM SHEET
   ===================================================== */
#quiz-bottom-sheet {
  position: fixed;
  inset: 0;
  z-index: 8000;
}
#quiz-bottom-sheet.open {
  display: block;
}
.qbs-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.qbs-panel {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  padding: 0.75rem 1.25rem calc(var(--bottom-nav-height) + var(--safe-bottom) + 1rem);
  transform: translateY(100%);
  transition: transform 0.3s cubic-bezier(0.32, 0.72, 0, 1);
}
#quiz-bottom-sheet.open .qbs-panel {
  transform: translateY(0);
}
.qbs-handle {
  width: 40px;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  margin: 0 auto 1rem;
}
.qbs-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.9rem;
  text-align: center;
  color: var(--text-primary);
}
.qbs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.55rem;
}
.qbs-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  padding: 0.9rem 0.6rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  border-top-width: 3px;
  background: var(--bg-card);
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s ease;
  -webkit-tap-highlight-color: transparent;
  text-align: center;
}
.qbs-item:active { transform: scale(0.95); }
.qbs-item-icon  { font-size: 1.5rem; line-height: 1; }
.qbs-item-name  { font-size: 0.82rem; font-weight: 700; }
.qbs-item-desc  { font-size: 0.67rem; color: var(--text-secondary); line-height: 1.3; }

.qbs-flags   { border-top-color: var(--accent); }
.qbs-caps    { border-top-color: var(--success); }
.qbs-map     { border-top-color: var(--oceania); }
.qbs-night   { border-top-color: #7c3aed; }
.qbs-culture { border-top-color: var(--warning); }
.qbs-defi    { border-top-color: #ef4444; }
.qbs-ultime  { border-top-color: var(--warning); }

/* =====================================================
   GENERAL TOUCH & LAYOUT IMPROVEMENTS
   ===================================================== */
@media (max-width: 768px) {

  /* Larger touch targets */
  .btn { min-height: 44px; }
  .btn-sm { min-height: 36px; }

  /* Prevent iOS input zoom (font-size must be ≥ 16px) */
  input[type="text"],
  input[type="email"],
  input[type="password"],
  input[type="search"],
  select,
  textarea {
    font-size: 16px !important;
  }

  /* Page spacing */
  .page {
    padding: 1.25rem 1rem;
  }
  .page-title { font-size: 1.6rem; }
  .page-subtitle { font-size: 0.875rem; margin-bottom: 1.25rem; }

  /* Hero */
  .home-hero { padding: 2.5rem 1rem 2rem; }
  .hero-title { font-size: clamp(2rem, 9vw, 3rem); }
  .hero-subtitle { font-size: 1rem; }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 0.6rem;
  }
  .hero-actions .btn { justify-content: center; }

  /* Feature cards */
  .features-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  .feature-card { padding: 1.2rem; }

  /* Home tracks */
  .home-tracks {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  /* Home pills */
  .home-pills { gap: 0.35rem; }
  .home-pill { font-size: 0.72rem; padding: 0.25rem 0.65rem; }

  /* CTA banner */
  .home-cta-banner {
    flex-direction: column;
    text-align: center;
    padding: 1.25rem;
  }
  .home-cta-banner .btn {
    width: 100%;
    justify-content: center;
  }

  /* Stats page */
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 0.75rem; }
  .stats-grid-5 { grid-template-columns: repeat(2, 1fr); }
  .stat-card { padding: 1rem; }
  .stat-card-number { font-size: 2rem; }

  /* Continent cards */
  .continent-cards-grid { grid-template-columns: repeat(3, 1fr); gap: 0.5rem; }
  .continent-ring-card { padding: 0.7rem 0.3rem 0.6rem; }
  .continent-ring-name { font-size: 0.75rem; }
  .continent-ring-sub { font-size: 0.62rem; }

  /* Continent detail */
  .continent-type-stats { grid-template-columns: 1fr; gap: 0.5rem; }
  .type-cards-grid { grid-template-columns: 1fr; gap: 0.75rem; }
  .continent-detail-panel { padding: 1rem; }

  /* Country progress list */
  .country-progress-list {
    grid-template-columns: 1fr 1fr;
    max-height: 280px;
  }

  /* Hard country list */
  .hard-country-item { padding: 0.9rem 1rem; }
}

/* =====================================================
   QUIZ MOBILE
   ===================================================== */
@media (max-width: 768px) {

  /* Quiz option grid */
  .quiz-options {
    grid-template-columns: 1fr 1fr !important;
    gap: 0.6rem !important;
  }
  .quiz-option {
    min-height: 54px !important;
    font-size: 0.875rem !important;
    padding: 0.7rem 0.5rem !important;
    text-align: center !important;
  }

  /* Large flag in quiz */
  .quiz-flag-display { font-size: 5rem !important; }

  /* Level selection */
  .level-card { padding: 1.2rem !important; }
  .level-grid {
    grid-template-columns: 1fr !important;
    gap: 0.75rem !important;
  }

  /* Quiz result rank card */
  .rank-card { padding: 1.5rem 1rem !important; }
}

@media (max-width: 480px) {
  /* On very small screens, quiz options go full width */
  .quiz-options {
    grid-template-columns: 1fr !important;
  }
  .quiz-option {
    min-height: 50px !important;
  }
  .continent-cards-grid { grid-template-columns: repeat(2, 1fr); }
  .country-progress-list { grid-template-columns: 1fr; }
  .stats-grid-5 { grid-template-columns: repeat(2, 1fr); }
}

/* =====================================================
   FLAG LIST MOBILE
   ===================================================== */
@media (max-width: 480px) {
  .flag-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 0.5rem !important;
  }
  .flag-card { padding: 0.75rem 0.6rem !important; }
}

/* =====================================================
   MAP MOBILE
   ===================================================== */
@media (max-width: 768px) {
  /* Map takes full height minus top + bottom nav */
  .map-wrapper, #map-container {
    height: calc(100vh - var(--nav-height) - var(--bottom-nav-height) - var(--safe-bottom)) !important;
  }
}

/* =====================================================
   AUTH MODAL MOBILE
   ===================================================== */
@media (max-width: 768px) {
  .auth-modal-content,
  .modal-content {
    margin: 1rem;
    max-height: 88vh;
    overflow-y: auto;
    border-radius: var(--radius-lg);
  }
}

/* =====================================================
   LEADERBOARD MOBILE
   ===================================================== */
@media (max-width: 480px) {
  .leaderboard-row { padding: 0.75rem !important; }
  .leaderboard-rank { font-size: 1rem !important; }
}

/* =====================================================
   PROFILE MOBILE
   ===================================================== */
@media (max-width: 480px) {
  .profile-avatar { font-size: 3rem !important; }
  .profile-card { padding: 1.25rem !important; }
}