/* ═══════════════════════════════════════════════════════════════════
   PassUK — Premium British Design System
   Mobile-first. Safe-area aware.
═══════════════════════════════════════════════════════════════════ */

/* ─── Tokens ───────────────────────────────────────────────────── */
:root {
  /* British palette */
  --navy:      #0E1F3D;
  --navy-2:    #1A3060;
  --navy-3:    #2B4380;
  --crimson:   #BE1522;
  --crimson-d: #9B1020;
  --gold:      #C4952A;
  --gold-l:    #DDB84A;
  --gold-pale: rgba(196,149,42,0.15);

  /* Surfaces */
  --page:   #F0EDE5;
  --card:   #FFFFFF;
  --surf:   #E8E4DB;
  --surf-2: #DDD8CE;

  /* Typography */
  --t1: #0D1626;
  --t2: #3A4261;
  --t3: #68728F;
  --t4: #9BA3B8;

  /* Borders */
  --b1: rgba(14,31,61,0.08);
  --b2: rgba(14,31,61,0.14);
  --b3: rgba(14,31,61,0.24);

  /* Layered shadows — the secret to premium feel */
  --s0: 0 1px 2px rgba(14,31,61,0.05);
  --s1: 0 1px 3px rgba(14,31,61,0.04),
        0 4px 14px rgba(14,31,61,0.07);
  --s2: 0 2px 6px rgba(14,31,61,0.05),
        0 10px 30px rgba(14,31,61,0.09),
        inset 0 1px 0 rgba(255,255,255,0.7);
  --s3: 0 4px 12px rgba(14,31,61,0.08),
        0 24px 64px rgba(14,31,61,0.13);
  --s-n: 0 1px 3px rgba(14,31,61,0.12),
         0 4px 16px rgba(14,31,61,0.30);
  --s-r: 0 1px 3px rgba(190,21,34,0.12),
         0 4px 16px rgba(190,21,34,0.28);

  /* Radius */
  --r1: 5px;
  --r2: 9px;
  --r3: 14px;
  --r4: 20px;
  --r5: 28px;

  --font-sans:   'Inter', system-ui, -apple-system, sans-serif;
  --font-serif:  'Playfair Display', Georgia, serif;
  --ease:        cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ─── Reset ────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-sans);
  background: var(--page);
  color: var(--t1);
  min-height: 100vh;
  min-height: -webkit-fill-available;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

button {
  cursor: pointer; border: none;
  font-family: inherit;
  -webkit-tap-highlight-color: transparent;
  transition: all 0.18s var(--ease);
}
button:active { transform: scale(0.96); }
button:disabled { opacity: 0.38; cursor: not-allowed; transform: none; }

/* iOS zoom prevention — 16px minimum on inputs */
input, select, textarea {
  font-family: inherit;
  font-size: 16px;
  border: 1.5px solid var(--b2);
  border-radius: var(--r2);
  padding: 0.65rem 0.9rem;
  outline: none;
  background: var(--card);
  color: var(--t1);
  width: 100%;
  transition: border-color 0.18s, box-shadow 0.18s;
  -webkit-appearance: none;
  appearance: none;
}
input:focus, select:focus {
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(14,31,61,0.08);
}

/* ─── Layout ───────────────────────────────────────────────────── */
#app {
  max-width: 680px;
  margin: 0 auto;
  /* Mobile: leave room for bottom nav + iOS home indicator */
  padding: 0 0.9rem calc(5.2rem + env(safe-area-inset-bottom, 0px));
  min-height: 100vh;
}

/* ─── Top Bar ──────────────────────────────────────────────────── */
#topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0 0.75rem;
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--page);
  /* Subtle border only when scrolled — JS can add .scrolled class */
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
#topbar.scrolled { border-bottom-color: var(--b1); }

.topbar-logo {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.2px;
  color: var(--navy);
  line-height: 1;
}
.topbar-logo span { color: var(--crimson); }

#auth-btn-wrap { display: flex; align-items: center; }

/* ── Why PassUK strip ───────────────────────────────────────────────────── */
.why-strip {
  position: relative;
  overflow: hidden;
  border-radius: var(--r4);
  padding: 1.2rem 1.2rem 1.3rem;
  margin-bottom: 0.85rem;
  color: #fff;
  background-color: var(--navy);
  background-image:
    radial-gradient(ellipse at 90% 10%,  rgba(190,21,34,0.20) 0%, transparent 50%),
    radial-gradient(ellipse at 5%  95%,  rgba(196,149,42,0.12) 0%, transparent 45%);
  border-top: 3px solid var(--gold);
  box-shadow: var(--s-n);
}
.why-strip::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}
.why-strip-label {
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold-l);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  opacity: 0.9;
}
.why-strip-label::before {
  content: '';
  display: block;
  width: 16px; height: 1.5px;
  background: var(--gold);
  flex-shrink: 0;
}
.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  position: relative;
}
.why-item {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0.7rem 0.75rem 0.65rem;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--r2);
  backdrop-filter: blur(4px);
}
.why-icon  { font-size: 1.1rem; line-height: 1; margin-bottom: 0.3rem; }
.why-title { font-size: 0.78rem; font-weight: 700; color: #fff; line-height: 1.2; margin-bottom: 0.12rem; }
.why-sub   { font-size: 0.65rem; color: rgba(255,255,255,0.55); line-height: 1.3; }

/* Learn More panel */
.why-learn-more-btn {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: 0.85rem;
  background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--r2);
  padding: 0.42rem 0.85rem;
  font-size: 0.72rem;
  font-weight: 700;
  color: rgba(255,255,255,0.85);
  letter-spacing: 0.02em;
  position: relative;
  transition: background 0.18s, color 0.18s;
}
.why-learn-more-btn:hover { background: rgba(255,255,255,0.16); color: #fff; }
.why-chevron { transition: transform 0.25s var(--ease); flex-shrink: 0; }
.why-chevron.flipped { transform: rotate(180deg); }

.why-more {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s var(--ease);
}
.why-more.open { max-height: 600px; }

.why-more-divider {
  height: 1px;
  background: rgba(255,255,255,0.10);
  margin: 0.85rem 0 0.75rem;
}
.why-more-list { display: flex; flex-direction: column; gap: 0.65rem; }
.why-more-item { display: flex; align-items: flex-start; gap: 0.65rem; }
.why-more-icon { font-size: 1.15rem; line-height: 1; flex-shrink: 0; margin-top: 0.05rem; }
.why-more-title { font-size: 0.78rem; font-weight: 700; color: #fff; line-height: 1.2; margin-bottom: 0.15rem; }
.why-more-sub   { font-size: 0.68rem; color: rgba(255,255,255,0.58); line-height: 1.4; }

/* ── Unlock banner ─────────────────────────────────────────────────────── */
.unlock-banner {
  position: relative;
  overflow: hidden;
  border-radius: var(--r4);
  padding: 1.4rem 1.3rem 1.35rem;
  margin-bottom: 0.85rem;
  background-color: var(--crimson);
  background-image:
    radial-gradient(ellipse at 80% 20%, rgba(255,255,255,0.12) 0%, transparent 55%),
    radial-gradient(ellipse at 10% 80%, rgba(0,0,0,0.18) 0%, transparent 50%);
  box-shadow: var(--s-r);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
}
.unlock-banner::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}
.unlock-eyebrow {
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  margin-bottom: 0.35rem;
  position: relative;
}
.unlock-headline {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 0.3rem;
  position: relative;
}
.unlock-sub {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.72);
  margin-bottom: 1rem;
  line-height: 1.4;
  position: relative;
}
.btn-unlock-google {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.2rem;
  background: #fff;
  color: var(--navy);
  border-radius: var(--r2);
  font-size: 0.82rem;
  font-weight: 700;
  border: none;
  box-shadow: 0 2px 8px rgba(0,0,0,0.18);
  letter-spacing: 0.01em;
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn-unlock-google:hover  { transform: translateY(-1px); box-shadow: 0 4px 14px rgba(0,0,0,0.22); }
.btn-unlock-google:active { transform: scale(0.97); }

.btn-auth-signin {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 1.05rem;
  border-radius: var(--r2);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  background: var(--navy);
  color: #fff;
  box-shadow: var(--s-n);
  min-height: 36px;
}
.btn-auth-signin:hover { background: var(--navy-2); }

.user-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.8rem 0.3rem 0.3rem;
  border-radius: var(--r2);
  background: var(--card);
  border: 1.5px solid var(--b2);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--t2);
  cursor: pointer;
  box-shadow: var(--s0);
  min-height: 36px;
}
.user-chip:hover { border-color: var(--navy); color: var(--navy); }

.user-avatar {
  width: 27px; height: 27px;
  border-radius: var(--r1);
  background: var(--navy);
  color: var(--gold);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.68rem; font-weight: 800;
  overflow: hidden; flex-shrink: 0;
}
.user-avatar img { width: 100%; height: 100%; object-fit: cover; }

/* ─── Bottom Nav ───────────────────────────────────────────────── */
#bottom-nav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--card);
  border-top: 1px solid var(--b2);
  display: flex;
  z-index: 200;
  box-shadow: 0 -2px 20px rgba(14,31,61,0.08);
  /* iOS home indicator */
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
.nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.55rem 0.3rem 0.5rem;
  gap: 0.16rem;
  background: none;
  color: var(--t4);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  position: relative;
  min-height: 52px;
  -webkit-tap-highlight-color: transparent;
}
.nav-item.active { color: var(--navy); }
.nav-item.active::before {
  content: '';
  position: absolute;
  top: -1px; left: 22%; right: 22%;
  height: 2px;
  background: var(--crimson);
}
.nav-item svg { width: 21px; height: 21px; }

/* ─── Views ────────────────────────────────────────────────────── */
.view { display: none; padding-top: 0.5rem; }
.view.active { display: block; }

/* ─── Cards ────────────────────────────────────────────────────── */
.card {
  background: var(--card);
  border-radius: var(--r3);
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--b1);
  box-shadow: var(--s1);
  margin-bottom: 0.8rem;
  /* Inner top highlight for depth */
  background-image: linear-gradient(
    to bottom,
    rgba(255,255,255,0.9) 0%,
    rgba(255,255,255,0) 60px
  );
}
.card-title {
  font-size: 0.63rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--t4);
  margin-bottom: 0.7rem;
}

/* ─── Buttons ──────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border-radius: var(--r2);
  padding: 0.7rem 1.3rem;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  min-height: 44px; /* touch target */
}

.btn-primary {
  background: var(--navy);
  color: #fff;
  box-shadow: var(--s-n);
}
.btn-primary:hover { background: var(--navy-2); }

/* CTA — British Red (Start Practice) */
.btn-success {
  background: var(--crimson);
  color: #fff;
  box-shadow: var(--s-r);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.82rem;
}
.btn-success:hover { background: var(--crimson-d); }

.btn-secondary {
  background: var(--card);
  color: var(--navy);
  border: 1.5px solid var(--b2);
  box-shadow: var(--s0);
}
.btn-secondary:hover { background: var(--surf); border-color: var(--b3); }

.btn-danger { background: var(--crimson); color: #fff; }
.btn-danger:hover { background: var(--crimson-d); }

.btn-full { width: 100%; }
.btn-flex { flex: 1; }
.btn-ghost {
  background: none; color: var(--t3);
  border: 1.5px solid var(--b1);
  padding: 0.7rem 1rem;
  font-size: 0.8rem;
}
.btn-ghost:hover { border-color: var(--b3); color: var(--navy); }
.quiz-nav-row {
  display: flex; align-items: center; gap: 0.6rem; width: 100%;
}
.btn-lg {
  padding: 0.95rem 2rem;
  font-size: 0.88rem;
  border-radius: var(--r3);
  min-height: 52px;
}
.btn-sm {
  padding: 0.42rem 0.85rem;
  font-size: 0.75rem;
  border-radius: var(--r1);
  min-height: 36px;
  letter-spacing: 0.02em;
}

/* ─── Hero Section ─────────────────────────────────────────────── */
.hero-section {
  position: relative;
  overflow: hidden;
  border-radius: var(--r4);
  padding: 1.7rem 1.6rem 1.6rem;
  margin-bottom: 0.85rem;
  color: #fff;
  /* Deep navy base + atmospheric glows */
  background-color: var(--navy);
  background-image:
    radial-gradient(ellipse at 88% 8%,  rgba(190,21,34,0.22)  0%, transparent 52%),
    radial-gradient(ellipse at 8%  92%, rgba(196,149,42,0.14) 0%, transparent 48%),
    radial-gradient(ellipse at 50% 50%, rgba(26,48,96,0.6)    0%, transparent 70%);
  /* Gold accent top border */
  border-top: 3px solid var(--gold);
  box-shadow: var(--s3);
}

/* Grid pattern — subtle */
.hero-section::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.022) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

/* Crimson right edge stripe */
.hero-section::after {
  content: '';
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--crimson), transparent 80%);
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold-l);
  margin-bottom: 0.6rem;
  opacity: 0.9;
}
.hero-eyebrow::before {
  content: '';
  display: block;
  width: 18px; height: 1.5px;
  background: var(--gold);
  flex-shrink: 0;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.2px;
  margin-bottom: 0.4rem;
}

.hero-sub {
  font-size: 0.83rem;
  line-height: 1.6;
  opacity: 0.68;
  margin-bottom: 1.3rem;
}

/* Countdown */
.countdown-label {
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold-l);
  opacity: 0.82;
  margin-bottom: 0.4rem;
}
.countdown-row { display: flex; gap: 0.5rem; margin-bottom: 0.65rem; }
.countdown-box {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--r2);
  padding: 0.48rem 0.65rem;
  text-align: center;
  min-width: 52px;
  backdrop-filter: blur(4px);
}
.countdown-box .num { font-size: 1.45rem; font-weight: 800; line-height: 1; }
.countdown-box .unit { font-size: 0.55rem; opacity: 0.6; letter-spacing: 0.08em; text-transform: uppercase; margin-top: 0.1rem; }

/* Daily Goal */
.daily-progress-text {
  font-size: 0.76rem; opacity: 0.78;
  margin-bottom: 0.38rem;
}
.daily-progress-bar {
  background: rgba(255,255,255,0.14);
  border-radius: 99px; height: 5px; margin-bottom: 0.3rem;
}
.daily-progress-fill {
  background: linear-gradient(90deg, var(--gold), var(--gold-l));
  height: 100%; border-radius: 99px;
  transition: width 0.6s var(--ease);
  box-shadow: 0 0 6px rgba(196,149,42,0.4);
}

/* ─── Locked Nav Item ──────────────────────────────────────────── */
.nav-item--locked { opacity: 0.42; }
.nav-lock-badge {
  position: absolute;
  top: 5px; right: calc(50% - 18px);
  background: var(--crimson);
  color: #fff;
  font-size: 0.5rem;
  font-weight: 700;
  border-radius: 6px;
  padding: 1px 4px;
  line-height: 1.5;
  pointer-events: none;
}

/* ─── Locked Lang Switcher ─────────────────────────────────────── */
.lang-locked-row {
  display: flex; align-items: center; gap: 0.4rem;
}
.exp-lang-btn--locked {
  opacity: 0.35; cursor: not-allowed; pointer-events: none;
}
.lang-unlock-btn {
  font-size: 0.7rem; font-weight: 700;
  color: #fff; background: var(--crimson);
  border-radius: 50%; width: 18px; height: 18px;
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer; flex-shrink: 0; border: none;
  line-height: 1;
}

/* ─── Locked Feature ───────────────────────────────────────────── */
.locked-feature { text-align: center; padding: 1.5rem 1rem; }
.locked-icon { font-size: 1.5rem; margin-bottom: 0.4rem; opacity: 0.35; }
.locked-text {
  font-size: 0.82rem; color: var(--t3);
  margin-bottom: 0.9rem; line-height: 1.6;
}
.btn-google-inline {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.58rem 1.15rem; border-radius: var(--r2);
  font-size: 0.82rem; font-weight: 700;
  background: var(--card); color: var(--t1);
  border: 1.5px solid var(--b2);
  box-shadow: var(--s0); cursor: pointer;
  min-height: 44px;
}
.btn-google-inline:hover { box-shadow: var(--s1); border-color: var(--b3); }

/* ─── Readiness Ring ───────────────────────────────────────────── */
.readiness-ring-wrap { display: flex; align-items: center; gap: 1.3rem; }
.readiness-ring { position: relative; width: 88px; height: 88px; flex-shrink: 0; }
.readiness-ring svg { transform: rotate(-90deg); }
.readiness-ring .ring-bg   { fill: none; stroke: var(--surf); stroke-width: 8; }
.readiness-ring .ring-fill {
  fill: none; stroke: var(--navy); stroke-width: 8;
  stroke-linecap: round; stroke-dasharray: 220; stroke-dashoffset: 220;
  transition: stroke-dashoffset 0.9s var(--ease), stroke 0.4s;
}
.readiness-ring .ring-fill.good  { stroke: #2E7D32; }
.readiness-ring .ring-fill.great { stroke: var(--gold); }
.readiness-ring-label {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  font-size: 1.3rem; font-weight: 800; color: var(--t1); line-height: 1;
}
.readiness-ring-label small { font-size: 0.54rem; font-weight: 600; color: var(--t4); }

.readiness-breakdown { flex: 1; min-width: 0; }
.readiness-label-badge {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2rem 0.55rem;
  border-radius: 99px;
  margin-bottom: 0.6rem;
  background: var(--surf);
  color: var(--t2);
}
.readiness-label-badge.good  { background: rgba(196,149,42,0.15); color: var(--gold); }
.readiness-label-badge.great { background: rgba(34,139,34,0.12);  color: #228B22; }

.rb-row { display: flex; justify-content: space-between; font-size: 0.77rem; margin-bottom: 0.2rem; }
.rb-label { color: var(--t3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rb-hint  { font-size: 0.68rem; color: var(--t4); font-weight: 400; }
.rb-val   { font-weight: 700; color: var(--navy); margin-left: 0.5rem; flex-shrink: 0; }
.rb-bar-track { background: var(--surf); border-radius: 99px; height: 3px; margin-bottom: 0.35rem; overflow: hidden; }
.rb-bar-fill  { height: 100%; border-radius: 99px; background: var(--navy); transition: width 0.7s var(--ease); }

/* ─── Settings ─────────────────────────────────────────────────── */
.settings-row { display: flex; gap: 0.6rem; align-items: flex-end; }
.settings-row input { flex: 1; }

/* ─── Quiz View ────────────────────────────────────────────────── */
.quiz-header {
  display: flex; align-items: center;
  justify-content: space-between;
  margin-bottom: 0.6rem;
}
.quiz-progress-text {
  font-size: 0.74rem; font-weight: 700;
  color: var(--t3); letter-spacing: 0.05em; text-transform: uppercase;
}
.quiz-timer {
  display: flex; align-items: center; gap: 0.28rem;
  font-size: 0.8rem; font-weight: 700; color: var(--t2);
  background: var(--card);
  border: 1px solid var(--b2);
  padding: 0.22rem 0.6rem;
  border-radius: var(--r1);
  box-shadow: var(--s0);
}
.quiz-timer svg { width: 12px; height: 12px; }

.quiz-progress-bar {
  height: 3px; background: var(--surf); border-radius: 99px;
  margin-bottom: 1rem; overflow: hidden;
}
.quiz-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--navy), var(--crimson));
  border-radius: 99px; transition: width 0.35s var(--ease);
}

.question-meta { display: flex; gap: 0.4rem; margin-bottom: 0.7rem; }
.meta-tag {
  font-size: 0.62rem; font-weight: 700;
  letter-spacing: 0.07em; text-transform: uppercase;
  padding: 0.2rem 0.55rem; border-radius: var(--r1);
  background: var(--surf); color: var(--t3);
  border: 1px solid var(--b1);
}

.question-text {
  font-size: 1.05rem; font-weight: 600;
  line-height: 1.7; margin-bottom: 1.1rem;
  color: var(--t1);
}

.options-list { display: flex; flex-direction: column; gap: 0.5rem; }

.option-btn {
  display: flex; align-items: flex-start; gap: 0.75rem;
  background: var(--card);
  border: 1.5px solid var(--b2);
  border-radius: var(--r3);
  padding: 0.9rem 1rem;
  text-align: left; font-size: 0.9rem;
  color: var(--t1); line-height: 1.5;
  width: 100%; min-height: 52px;
  transition: all 0.16s var(--ease);
  box-shadow: var(--s0);
}
.option-btn:hover:not(:disabled) {
  border-color: var(--navy);
  background: rgba(14,31,61,0.02);
  transform: translateY(-1px);
  box-shadow: var(--s1);
}
.option-btn.correct  { border-color: #2E7D32; background: rgba(46,125,50,0.05); }
.option-btn.incorrect{ border-color: var(--crimson); background: rgba(190,21,34,0.04); }

/* Multi-select badge */
.multi-select-badge {
  display: inline-flex; align-items: center; gap: 0.35rem;
  background: rgba(196,149,42,0.12); color: var(--gold);
  border: 1px solid rgba(196,149,42,0.35);
  border-radius: 99px;
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.03em;
  padding: 0.25rem 0.75rem;
  margin-top: 0.5rem; margin-bottom: 0.25rem;
}
.multi-select-badge::before { content: '☑'; font-size: 0.8em; }

/* Multi-select option style */
.option-btn.multi-select { cursor: pointer; }
.option-btn.multi-select .option-checkbox {
  display: inline-flex; align-items: center; justify-content: center;
  width: 20px; height: 20px; flex-shrink: 0;
  border: 2px solid var(--b2); border-radius: 4px;
  background: var(--card);
  transition: all 0.15s var(--ease);
}
.option-btn.multi-select.multi-checked { border-color: var(--navy-2); background: rgba(14,31,61,0.04); }
.option-btn.multi-select.multi-checked .option-checkbox {
  background: var(--navy); border-color: var(--navy);
}
.option-btn.multi-select.multi-checked .option-checkbox::after {
  content: ''; display: block;
  width: 5px; height: 9px;
  border: 2px solid #fff; border-top: none; border-left: none;
  transform: rotate(45deg) translate(-1px, -1px);
}
.option-btn.multi-select.correct  .option-checkbox { background: #2E7D32; border-color: #2E7D32; }
.option-btn.multi-select.correct  .option-checkbox::after {
  content: ''; display: block;
  width: 5px; height: 9px;
  border: 2px solid #fff; border-top: none; border-left: none;
  transform: rotate(45deg) translate(-1px, -1px);
}
.option-btn.multi-select.incorrect .option-checkbox { background: var(--crimson); border-color: var(--crimson); }

.option-key {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: var(--r1);
  background: var(--surf); border: 1px solid var(--b2);
  font-weight: 800; font-size: 0.78rem; flex-shrink: 0;
  transition: all 0.16s var(--ease);
}
.option-btn:hover:not(:disabled) .option-key { background: var(--navy); color: #fff; border-color: transparent; }
.option-btn.correct   .option-key { background: #2E7D32;    color: #fff; border-color: transparent; }
.option-btn.incorrect .option-key { background: var(--crimson); color: #fff; border-color: transparent; }

/* Explanation panel */
.explanation-panel {
  background: #FAFAF8;
  border: 1px solid var(--b2);
  border-left: 3px solid var(--navy);
  border-radius: var(--r3);
  padding: 1rem 1.1rem;
  margin-top: 1rem;
  display: none;
  animation: fadeIn 0.25s var(--ease);
}
.explanation-panel.visible { display: block; }

.explanation-lang-row {
  display: flex; align-items: center; gap: 0.5rem;
  margin-bottom: 0.8rem; padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--b1);
}
.explanation-lang-label {
  font-size: 0.6rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--t4); white-space: nowrap; flex-shrink: 0;
}
#explanation-lang-switcher { display: flex; gap: 0.2rem; flex-wrap: wrap; }
.exp-lang-btn {
  padding: 0.2rem 0.6rem; border-radius: var(--r1);
  font-size: 0.7rem; font-weight: 600;
  background: var(--surf); color: var(--t2);
  border: 1px solid var(--b1); cursor: pointer;
  transition: all 0.15s; min-height: 28px;
}
.exp-lang-btn.active { background: var(--navy); color: #fff; border-color: transparent; }
.exp-lang-btn:hover:not(.active) { border-color: var(--navy); color: var(--navy); }

.explanation-verdict {
  display: flex; align-items: center; gap: 0.45rem;
  font-size: 0.9rem; font-weight: 700; margin-bottom: 0.6rem;
}
.explanation-verdict.correct { color: #2E7D32; }
.explanation-verdict.wrong   { color: var(--crimson); }

.explanation-body { font-size: 0.85rem; color: var(--t2); line-height: 1.72; }
.explanation-body strong { color: var(--t1); }

.wrong-options-list { margin-top: 0.65rem; display: flex; flex-direction: column; gap: 0.3rem; }
.wrong-option-item {
  font-size: 0.81rem; color: var(--t3);
  padding: 0.32rem 0; border-top: 1px solid var(--b1); line-height: 1.55;
}
.wrong-option-item strong { color: var(--t1); }

.memory-section { margin-top: 0.8rem; border-top: 1px solid var(--b1); padding-top: 0.75rem; }
.memory-label {
  font-size: 0.6rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--gold); margin-bottom: 0.4rem;
}
.memory-img-wrap {
  border-radius: var(--r2); overflow: hidden;
  background: var(--surf); min-height: 88px;
  display: flex; align-items: center; justify-content: center;
  flex-direction: column;
}
.memory-img-wrap img { width: 100%; display: block; max-height: 240px; object-fit: contain; }
.ai-image-label { font-size: 0.63rem; color: var(--t4); padding: 0.3rem 0.5rem 0.4rem; width: 100%; text-align: right; }
.memory-img-placeholder { font-size: 0.8rem; color: var(--t4); padding: 1rem; }

/* ─── Image Feedback ───────────────────────────────────────────── */
.img-feedback-row {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 0.6rem; gap: 0.5rem; flex-wrap: wrap;
}
.img-feedback-label {
  font-size: 0.72rem; color: var(--t3); flex: 1; min-width: 0;
}
.img-feedback-btns { display: flex; gap: 0.4rem; flex-shrink: 0; }
.img-feedback-btn {
  display: flex; align-items: center; gap: 0.3rem;
  padding: 0.3rem 0.65rem; border-radius: var(--r1);
  border: 1.5px solid var(--b1); background: none;
  color: var(--t3); font-size: 0.75rem; font-weight: 600;
  cursor: pointer; transition: all 0.15s;
}
.img-feedback-btn svg { width: 15px; height: 15px; flex-shrink: 0; }
.img-feedback-btn:hover { border-color: var(--navy); color: var(--navy); }
.img-feedback-btn.voted-like  { background: #e8f5e9; border-color: #2e7d32; color: #2e7d32; }
.img-feedback-btn.voted-dislike { background: #fce4ec; border-color: var(--crimson); color: var(--crimson); }
.img-feedback-btn:disabled { opacity: 0.5; cursor: default; }

.quiz-actions { margin-top: 1rem; }
.report-in-card-row {
  display: flex; justify-content: flex-end;
  margin-top: 0.75rem; padding-top: 0.6rem;
  border-top: 1px solid var(--b1);
}
.report-link {
  font-size: 0.72rem; color: var(--t4); text-decoration: none;
  white-space: nowrap; transition: color 0.15s;
}
.report-link:hover { color: var(--crimson); text-decoration: underline; }
.report-question-preview {
  font-size: 0.82rem; color: var(--t2); background: var(--surf);
  border-radius: var(--r2); padding: 0.7rem 0.9rem;
  margin-bottom: 1rem; line-height: 1.6;
  border-left: 3px solid var(--navy);
}

/* ─── Results View ─────────────────────────────────────────────── */
.results-hero { text-align: center; padding: 1.8rem 1rem 1.2rem; }
.results-score-ring { position: relative; width: 140px; height: 140px; margin: 0 auto 1rem; }
.results-score-ring svg { transform: rotate(-90deg); }
.score-ring-bg   { fill: none; stroke: var(--surf); stroke-width: 12; }
.score-ring-fill {
  fill: none; stroke: var(--navy); stroke-width: 12;
  stroke-linecap: round; stroke-dasharray: 380; stroke-dashoffset: 380;
  transition: stroke-dashoffset 1s var(--ease);
}
.score-ring-fill.pass { stroke: #2E7D32; }
.score-ring-fill.fail { stroke: var(--crimson); }
.results-score-label {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
}
.results-score-num {
  font-family: var(--font-serif);
  font-size: 2.4rem; font-weight: 700; color: var(--navy);
}
.results-score-pct { font-size: 0.78rem; color: var(--t4); }
.results-verdict { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.2rem; }
.results-verdict.pass { color: #2E7D32; }
.results-verdict.fail { color: var(--crimson); }

.results-stats { display: grid; grid-template-columns: repeat(3,1fr); gap: 0.55rem; margin: 1rem 0; }
.result-stat {
  background: var(--card);
  border-radius: var(--r2); border: 1px solid var(--b1);
  padding: 0.75rem 0.4rem; text-align: center;
  box-shadow: var(--s0);
}
.result-stat .rs-num { font-size: 1.2rem; font-weight: 800; color: var(--navy); }
.result-stat .rs-label { font-size: 0.62rem; color: var(--t4); letter-spacing: 0.05em; text-transform: uppercase; margin-top: 0.1rem; }
.results-actions { display: flex; flex-direction: column; gap: 0.55rem; }

/* ─── Wrong Questions View ─────────────────────────────────────── */
.wrong-list { display: flex; flex-direction: column; gap: 0.55rem; }
.wrong-item {
  background: var(--card);
  border-radius: var(--r3); padding: 1rem 1.1rem;
  border: 1px solid var(--b1);
  border-left: 3px solid var(--crimson);
  box-shadow: var(--s0);
  display: flex; align-items: flex-start; gap: 0.85rem;
}
.wrong-item-info { flex: 1; min-width: 0; }
.wrong-item-q { font-size: 0.87rem; font-weight: 600; margin-bottom: 0.2rem; line-height: 1.5; }
.wrong-item-meta { font-size: 0.72rem; color: var(--t4); letter-spacing: 0.03em; }
.wrong-item-actions { display: flex; flex-direction: column; gap: 0.28rem; flex-shrink: 0; }

/* ─── Stats View ───────────────────────────────────────────────── */
.stats-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 0.6rem; margin-bottom: 0.8rem; }
.stat-card {
  background: var(--card);
  border-radius: var(--r3); border: 1px solid var(--b1);
  border-top: 2px solid var(--navy);
  padding: 1rem 0.9rem; text-align: center;
  box-shadow: var(--s0);
  background-image: linear-gradient(
    to bottom,
    rgba(14,31,61,0.025) 0%,
    rgba(14,31,61,0) 30px
  );
}
.stat-card .sc-num {
  font-family: var(--font-serif);
  font-size: 1.6rem; font-weight: 700; color: var(--navy);
}
.stat-card .sc-label {
  font-size: 0.62rem; color: var(--t4);
  margin-top: 0.1rem; letter-spacing: 0.07em; text-transform: uppercase;
}

.chapter-bar-row { margin-bottom: 0.9rem; }
.chapter-bar-name { display: block; color: var(--t2); font-size: 0.72rem; font-weight: 600; margin-bottom: 0.3rem; }
.chapter-bar-bottom { display: flex; align-items: center; gap: 0.6rem; }
.chapter-bar-legend { font-size: 0.68rem; color: var(--t4); margin: 0 0 0.75rem; }
.chapter-bar-track { flex: 1; background: var(--surf); border-radius: 99px; height: 5px; overflow: hidden; }
.chapter-bar-fill {
  height: 100%; border-radius: 99px;
  background: linear-gradient(90deg, var(--navy), var(--navy-2));
  transition: width 0.6s var(--ease);
}
.chapter-bar-pct { font-size: 0.7rem; font-weight: 700; color: var(--navy); width: 32px; text-align: right; flex-shrink: 0; }

.session-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.52rem 0; border-bottom: 1px solid var(--b1);
  font-size: 0.81rem;
}
.session-row:last-child { border-bottom: none; }
.session-score { font-weight: 700; }
.session-score.pass { color: #2E7D32; }
.session-score.fail { color: var(--crimson); }

/* ─── Modals ───────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(10,16,32,0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex; align-items: flex-end; justify-content: center;
  z-index: 1000;
  padding: 0;
  opacity: 0; pointer-events: none;
  transition: opacity 0.25s;
}
.modal-overlay.visible { opacity: 1; pointer-events: all; }

.modal-box {
  background: var(--card);
  /* Bottom sheet on mobile */
  border-radius: var(--r4) var(--r4) 0 0;
  padding: 1.5rem 1.6rem calc(1.6rem + env(safe-area-inset-bottom, 0px));
  width: 100%; max-width: 520px;
  text-align: center;
  box-shadow: var(--s3);
  border: 1px solid var(--b1);
  border-bottom: none;
  transform: translateY(100%);
  transition: transform 0.35s cubic-bezier(0.32, 0.72, 0, 1);
}
.modal-overlay.visible .modal-box { transform: translateY(0); }

/* Drag handle */
.modal-box::before {
  content: '';
  display: block;
  width: 36px; height: 4px;
  background: var(--b2);
  border-radius: 99px;
  margin: 0 auto 1.3rem;
}

/* Reward modal */
.modal-emoji { font-size: 2.8rem; margin-bottom: 0.5rem; }
.modal-title {
  font-family: var(--font-serif);
  font-size: 1.3rem; font-weight: 700; color: var(--navy); margin-bottom: 0.2rem;
}
.modal-subtitle { font-size: 0.9rem; color: var(--crimson); font-weight: 700; margin-bottom: 0.65rem; }
.modal-body { font-size: 0.84rem; color: var(--t2); line-height: 1.72; margin-bottom: 1.3rem; }
.modal-actions { display: flex; flex-direction: column; gap: 0.5rem; }

/* ── Consent checkbox (auth modal) ──────────────────────────────── */
.consent-row {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  padding: 0.55rem 0;
  margin-bottom: 1.1rem;
  cursor: pointer;
  user-select: none;
  text-align: left;
}
.consent-checkmark {
  display: flex; align-items: center; justify-content: center;
  width: 20px; height: 20px;
  min-width: 20px;
  border-radius: 5px;
  border: 2px solid var(--b3);
  background: var(--card);
  transition: all 0.15s var(--ease);
  margin-top: 0.1rem;
  flex-shrink: 0;
}
.consent-checkmark.checked {
  background: var(--navy);
  border-color: var(--navy);
}
.consent-checkmark svg { opacity: 0; transition: opacity 0.12s; }
.consent-checkmark.checked svg { opacity: 1; }
.consent-text {
  font-size: 0.76rem;
  color: var(--t3);
  line-height: 1.58;
}

/* ── Marketing toggle (profile) ─────────────────────────────────── */
.marketing-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.marketing-toggle-info { flex: 1; min-width: 0; }
.marketing-toggle-label { font-size: 0.88rem; font-weight: 600; color: var(--t1); }
.marketing-toggle-sub { font-size: 0.73rem; color: var(--t3); margin-top: 0.1rem; line-height: 1.4; }
.toggle-switch {
  position: relative;
  flex-shrink: 0;
  width: 44px; height: 26px;
  cursor: pointer;
}
.toggle-slider {
  position: absolute; inset: 0;
  background: var(--surf-2);
  border-radius: 99px;
  transition: background 0.2s var(--ease), border-color 0.2s;
  border: 1.5px solid var(--b2);
}
.toggle-slider::after {
  content: '';
  position: absolute;
  top: 2px; left: 2px;
  width: 18px; height: 18px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0,0,0,0.18);
  transition: transform 0.2s var(--ease);
}
.toggle-switch.on .toggle-slider {
  background: var(--navy);
  border-color: var(--navy);
}
.toggle-switch.on .toggle-slider::after {
  transform: translateX(18px);
}

/* Auth modal specifics */
.auth-modal-icon { font-size: 2rem; margin-bottom: 0.65rem; }
.auth-modal-title {
  font-family: var(--font-serif);
  font-size: 1.3rem; font-weight: 700; color: var(--navy); margin-bottom: 0.3rem;
}
.auth-modal-subtitle { font-size: 0.82rem; color: var(--t2); line-height: 1.65; margin-bottom: 1.4rem; }
.btn-google {
  display: flex; align-items: center; justify-content: center; gap: 0.65rem;
  width: 100%; padding: 0.8rem 1.4rem;
  border-radius: var(--r2); font-size: 0.88rem; font-weight: 700;
  background: #fff; color: #3C4043;
  border: 1.5px solid #DADCE0;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
  cursor: pointer; margin-bottom: 0.6rem;
  min-height: 52px;
}
.btn-google:hover { box-shadow: var(--s1); }
.btn-google svg { width: 18px; height: 18px; flex-shrink: 0; }
.btn-auth-skip {
  background: none; color: var(--t4);
  font-size: 0.8rem; font-weight: 600;
  padding: 0.4rem; border: none; cursor: pointer; width: 100%;
  min-height: 44px;
}
.btn-auth-skip:hover { color: var(--t2); }

/* ─── Toast ─────────────────────────────────────────────────────── */
#toast-container {
  position: fixed;
  bottom: calc(5.5rem + env(safe-area-inset-bottom, 0px));
  left: 50%; transform: translateX(-50%);
  z-index: 500; display: flex; flex-direction: column;
  gap: 0.35rem; align-items: center; pointer-events: none;
  width: max-content; max-width: calc(100vw - 2rem);
}
.toast {
  background: var(--navy); color: #fff;
  padding: 0.58rem 1.1rem; border-radius: var(--r2);
  font-size: 0.82rem; font-weight: 600; letter-spacing: 0.01em;
  box-shadow: var(--s-n);
  animation: toastIn 0.25s var(--ease), toastOut 0.25s var(--ease) 2.5s forwards;
}
.toast.success { background: #2E7D32; }
.toast.error   { background: var(--crimson); }

/* ─── Loading ──────────────────────────────────────────────────── */
#loading-overlay {
  position: fixed; inset: 0; background: var(--page);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  z-index: 900; transition: opacity 0.3s;
}
#loading-overlay.hidden { opacity: 0; pointer-events: none; }
.spinner {
  width: 38px; height: 38px;
  border: 3px solid var(--surf-2);
  border-top-color: var(--navy);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
  margin-bottom: 1rem;
}
.loading-text { color: var(--t4); font-size: 0.82rem; letter-spacing: 0.06em; text-transform: uppercase; }

/* ─── Footer ───────────────────────────────────────────────────── */
.app-footer {
  text-align: center;
  padding: 1.6rem 0 0.6rem;
  margin-top: 0.6rem;
}
.footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.3rem 0.5rem;
  margin-bottom: 0.45rem;
}
.footer-link {
  background: none;
  border: none;
  color: var(--t3);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.2rem 0;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: transparent;
  transition: color 0.15s, text-decoration-color 0.15s;
}
.footer-link:hover { color: var(--navy); text-decoration-color: var(--navy); }
.footer-dot { color: var(--t4); font-size: 0.65rem; }
.footer-copy {
  font-size: 0.68rem;
  color: var(--t4);
  letter-spacing: 0.04em;
}

/* ─── Profile View ──────────────────────────────────────────────── */
.profile-header-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.8rem;
}
.profile-avatar {
  width: 52px; height: 52px;
  border-radius: var(--r2);
  background: var(--navy);
  color: var(--gold);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; font-weight: 800;
  overflow: hidden; flex-shrink: 0;
  border: 2px solid var(--b2);
}
.profile-avatar img { width: 100%; height: 100%; object-fit: cover; }
.profile-info { flex: 1; min-width: 0; }
.profile-name { font-size: 1rem; font-weight: 700; color: var(--t1); line-height: 1.2; }
.profile-email { font-size: 0.75rem; color: var(--t3); margin-top: 0.15rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.profile-setting-hint { font-size: 0.78rem; color: var(--t3); margin-bottom: 0.75rem; line-height: 1.5; }
.lang-picker { display: flex; gap: 0.45rem; flex-wrap: wrap; }
.lang-pick-btn {
  padding: 0.45rem 1rem;
  border-radius: var(--r2);
  font-size: 0.8rem; font-weight: 600;
  background: var(--surf); color: var(--t2);
  border: 1.5px solid var(--b2);
  cursor: pointer; min-height: 40px;
  transition: all 0.15s;
}
.lang-pick-btn.active { background: var(--navy); color: #fff; border-color: transparent; box-shadow: var(--s-n); }
.lang-pick-btn:hover:not(.active) { border-color: var(--navy); color: var(--navy); }

/* ─── Info Modal ────────────────────────────────────────────────── */
.info-modal-box {
  text-align: left;
  max-height: 85vh;
  height: 85vh;
  display: flex;
  flex-direction: column;
  padding-top: 1.2rem;
  overflow: hidden;
}
.info-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.9rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--b1);
  flex-shrink: 0;
}
.info-modal-title {
  font-family: var(--font-serif);
  font-size: 1.2rem; font-weight: 700; color: var(--navy);
}
.info-modal-close {
  display: flex; align-items: center; justify-content: center;
  width: 32px; height: 32px;
  background: var(--surf); border-radius: var(--r1);
  color: var(--t2); border: none; cursor: pointer;
  flex-shrink: 0;
  transition: background 0.15s, color 0.15s;
}
.info-modal-close:hover { background: var(--surf-2); color: var(--t1); }
.info-modal-body {
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  flex: 1;
  min-height: 0;
  font-size: 0.84rem;
  color: var(--t2);
  line-height: 1.72;
  padding-bottom: 0.5rem;
}
.info-modal-body p { margin-bottom: 0.75rem; }
.info-modal-body h3 {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--t4);
  margin: 1rem 0 0.4rem;
}
.info-modal-body ul { padding-left: 1.2rem; margin-bottom: 0.75rem; }
.info-modal-body li { margin-bottom: 0.3rem; }
.info-modal-body em { font-style: italic; }
.info-modal-body strong { color: var(--t1); }
.info-updated { color: var(--t4) !important; font-size: 0.72rem !important; margin-top: 1rem !important; }
.collab-item {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  margin-bottom: 0.85rem;
  padding: 0.75rem;
  background: var(--surf);
  border-radius: var(--r2);
  border: 1px solid var(--b1);
}
.collab-icon { font-size: 1.3rem; flex-shrink: 0; margin-top: 0.05rem; line-height: 1; }
.collab-item p { margin: 0.2rem 0 0; color: var(--t3); font-size: 0.8rem; }
.collab-cta {
  margin-top: 1.2rem;
  padding: 1.1rem;
  background: var(--navy);
  border-radius: var(--r3);
  text-align: center;
}
.collab-cta p { color: rgba(255,255,255,0.72); margin-bottom: 0.5rem; font-size: 0.82rem; }
.collab-email {
  display: inline-block;
  color: var(--gold-l);
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  letter-spacing: 0.01em;
}
.collab-email:hover { text-decoration: underline; text-underline-offset: 2px; }

/* ─── Contact Form ─────────────────────────────────────────────── */
.contact-form { display: flex; flex-direction: column; gap: 0.85rem; margin-top: 0.4rem; }
.contact-field { display: flex; flex-direction: column; gap: 0.28rem; }
.contact-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--t3);
}
.contact-form textarea { resize: vertical; min-height: 110px; line-height: 1.6; }

.contact-select-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.contact-select-wrap select { padding-right: 2.2rem; }
.contact-select-arrow {
  position: absolute;
  right: 0.8rem;
  pointer-events: none;
  color: var(--t3);
  flex-shrink: 0;
}

/* ─── Misc ─────────────────────────────────────────────────────── */
.difficulty-stars { color: var(--gold); }
.empty-state { text-align: center; padding: 2.5rem 1rem; color: var(--t4); }
.empty-state .empty-icon { font-size: 2rem; margin-bottom: 0.6rem; opacity: 0.4; }
.empty-state p { font-size: 0.84rem; }

/* ─── Animations ───────────────────────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(5px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes toastIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes toastOut { to { opacity: 0; transform: translateY(-6px); } }
@keyframes spin { to { transform: rotate(360deg); } }

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════════════════════ */

/* ── Small phones (≤ 360px) ─────────────────────────────────── */
@media (max-width: 360px) {
  .hero-title { font-size: 1.45rem; }
  .hero-section { padding: 1.4rem 1.2rem 1.3rem; }
  .countdown-box { min-width: 44px; padding: 0.4rem 0.5rem; }
  .countdown-box .num { font-size: 1.25rem; }
  .results-score-ring { width: 120px; height: 120px; }
  .results-score-num { font-size: 1.9rem; }
}

/* ── Mobile (≤ 639px) ───────────────────────────────────────── */
@media (max-width: 639px) {
  /* Explanation lang row: label + buttons stack on mobile */
  .explanation-lang-row { flex-wrap: wrap; gap: 0.3rem; }
  .explanation-lang-label { width: 100%; }
  #explanation-lang-switcher { gap: 0.25rem; }

  /* Settings rows stack on small screens */
  .settings-row { flex-direction: column; gap: 0.55rem; }
  .settings-row .btn { width: 100%; }

  /* Question text slightly smaller */
  .question-text { font-size: 0.98rem; }

  /* Modal covers more of screen */
  .modal-box { border-radius: var(--r4) var(--r4) 0 0; }

  /* Stat numbers slightly smaller */
  .stat-card .sc-num { font-size: 1.4rem; }
}

/* ── Tablet & Desktop (≥ 640px) ─────────────────────────────── */
@media (min-width: 640px) {
  #app { padding: 0 1.25rem 5.5rem; }

  #topbar { padding: 1.1rem 0 0.9rem; }

  .hero-section {
    padding: 2.2rem 2.2rem 2rem;
    border-radius: var(--r5);
  }
  .hero-title { font-size: 2rem; }

  .card { padding: 1.35rem 1.5rem; }

  /* Modal is centred, not bottom sheet */
  .modal-overlay { align-items: center; }
  .modal-box {
    border-radius: var(--r4);
    border: 1px solid var(--b1);
    border-top: 3px solid var(--gold);
    max-width: 420px;
    padding: 2.2rem 2rem;
    transform: translateY(10px) scale(0.97);
  }
  .modal-overlay.visible .modal-box { transform: translateY(0) scale(1); }
  .modal-box::before { display: none; } /* no drag handle on desktop */

  /* Info modal on desktop: fixed height so body can scroll */
  .info-modal-box {
    max-width: 560px;
    height: 82vh;
    padding: 1.4rem 1.8rem 1.4rem;
  }

  .settings-row { flex-direction: row; }
  .settings-row .btn { width: auto; }

  .results-score-ring { width: 150px; height: 150px; }
  .results-score-num { font-size: 2.5rem; }

  .stats-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ── Large Desktop (≥ 900px) ────────────────────────────────── */
@media (min-width: 900px) {
  .hero-title { font-size: 2.3rem; }
  .card { padding: 1.5rem 1.7rem; }
}

/* ── Cookie Consent Banner ──────────────────────────────────── */
.cookie-banner {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 9999;
  background: var(--navy);
  padding: 0.9rem 1rem;
  padding-bottom: calc(0.9rem + env(safe-area-inset-bottom));
  box-shadow: 0 -2px 16px rgba(14,31,61,0.25);
}
.cookie-banner-inner {
  max-width: 680px; margin: 0 auto;
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
}
.cookie-banner-text {
  flex: 1; min-width: 200px;
  font-size: 0.8rem; color: rgba(255,255,255,0.85); margin: 0; line-height: 1.4;
}
.cookie-policy-link { color: var(--gold-l); text-decoration: underline; }
.cookie-banner-btns { display: flex; gap: 0.5rem; flex-shrink: 0; }
.btn-cookie {
  padding: 0.42rem 0.9rem; border-radius: var(--r2);
  font-size: 0.78rem; font-weight: 600; cursor: pointer; border: none;
  white-space: nowrap; transition: opacity 0.15s;
}
.btn-cookie:hover { opacity: 0.85; }
.btn-cookie-reject {
  background: rgba(255,255,255,0.12); color: rgba(255,255,255,0.9);
}
.btn-cookie-accept {
  background: var(--gold); color: #fff;
}