/* style.css */

:root {
    --bg:        #0F172A;
    --surface:   #1E293B;
    --surface-2: #263348;
    --border:    #334155;
    --border-2:  #475569;

    --orange:      #F97316;
    --orange-dim:  rgba(249, 115, 22, 0.12);
    --orange-glow: rgba(249, 115, 22, 0.35);

    --green:      #22C55E;
    --green-dim:  rgba(34, 197, 94, 0.12);
    --green-glow: rgba(34, 197, 94, 0.35);

    --red:      #EF4444;
    --red-dim:  rgba(239, 68, 68, 0.12);
    --red-glow: rgba(239, 68, 68, 0.35);

    --blue:      #60A5FA;
    --blue-dim:  rgba(96, 165, 250, 0.12);
    --blue-glow: rgba(96, 165, 250, 0.35);

    --text:      #F1F5F9;
    --text-2:    #CBD5E1;
    --text-muted:#64748B;

    /* Legacy aliases kept for JS compatibility */
    --primary-color:   #F97316;
    --secondary-color: #22C55E;
    --match-color:     #60A5FA;
    --incorrect-color: #EF4444;
}

*, *::before, *::after { box-sizing: border-box; }

html { font-size: 16px; }

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    background-image:
        radial-gradient(ellipse at 15% 65%, rgba(249,115,22,0.07) 0%, transparent 55%),
        radial-gradient(ellipse at 85% 10%, rgba(96,165,250,0.07) 0%, transparent 55%);
    color: var(--text-2);
    font-size: 1rem;
    line-height: 1.5;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    /* Safe padding on all sides; bottom accounts for home indicator on iOS */
    padding: 1.25rem 1rem env(safe-area-inset-bottom, 1.5rem);
    padding-bottom: max(1.5rem, env(safe-area-inset-bottom));
}

.app-container {
    width: 100%;
    max-width: 600px;
    position: relative;
    text-align: center;
}

h1, h2, h3 { font-weight: 800; color: var(--text); margin: 0; }

/* ===================== LANDING PAGE ===================== */

#landing-page { padding: 1.5rem 0.5rem 2rem; }

/* ── iPhone landing: readable fonts, no scroll, fits all iPhone sizes ── */
/* All overrides scoped to #landing-page — game screens are UNTOUCHED       */
@media (max-width: 600px) {

  /* Compact flex column — landing page only, game screens unaffected */
  #landing-page {
    /* Force the section to fill the app-container minus padding */
    height: 100% !important; 
    min-height: calc(100dvh - 120px) !important; 
    padding: 0 !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: space-evenly !important; 
    gap: 0 !important; 
  }

  /* --- Title (scoped to landing) --- */
  #landing-page h1 { margin: 0 !important; }
  #landing-page .title-eyebrow {
    font-size: 0.82rem !important;
    letter-spacing: 0.2em !important;
  }
  #landing-page .title-battle {
    font-size: 2.6rem !important;
    line-height: 0.9 !important;
  }

  /* --- Stats strip (only on landing) --- */
  #landing-page .landing-stats {
    padding: 0.5rem 0.75rem !important;
    margin: 0 !important;
    gap: 0.25rem !important;
    border-radius: 0.65rem !important;
  }
  #landing-page .stat-num   { font-size: 1.3rem !important; letter-spacing: -0.02em !important; }
  #landing-page .stat-label { font-size: 0.62rem !important; margin-top: 2px !important; }
  #landing-page .stat-sep   { font-size: 1rem !important; }

  /* --- Learn chips (only on landing) --- */
  #landing-page .learn-section { margin: 0 !important; }
  #landing-page .learn-label   { font-size: 0.65rem !important; margin-bottom: 0.25rem !important; }
  #landing-page .learn-chips   { gap: 0.25rem !important; }
  #landing-page .learn-chip {
    font-size: 0.75rem !important;
    padding: 0.25rem 0.55rem !important;
    gap: 0.2rem !important;
    border-radius: 99px !important;
  }

  /* --- Rules card (only on landing) --- */
  #landing-page .game-rules {
    padding: 0.5rem 0.9rem !important;
    margin: 0 !important;
    border-radius: 0.7rem !important;
  }
  #landing-page .rules-heading {
    font-size: 0.85rem !important;
    padding-bottom: 0.38rem !important;
    gap: 0.4rem !important;
  }
  #landing-page .game-rules li {
    padding: 0.28rem 0 !important;
    font-size: 0.84rem !important;
    gap: 0.55rem !important;
    line-height: 1.3 !important;
  }
  #landing-page .rule-icon {
    font-size: 0.9rem !important;
    width: 1.1rem !important;
  }

  /* --- CTA button (only on landing, does NOT affect game screens) --- */
  #landing-page .primary-button {
    padding: 0.8rem 1rem !important;
    font-size: 1rem !important;
    min-height: 46px !important;
    border-radius: 0.75rem !important;
    margin: 0 !important;
  }
}

.landing-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--surface);
    border: 1px solid var(--blue);
    color: var(--blue);
    box-shadow: 0 0 12px var(--blue-glow);
    font-size: clamp(0.72rem, 2.3vw, 0.82rem);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0.35rem 1rem;
    border-radius: 99px;
    margin-bottom: 1rem;
}

#landing-page h1 {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
    margin-bottom: 0.75rem;
    line-height: 1;
}

.title-eyebrow {
    font-size: clamp(0.95rem, 3.5vw, 1.25rem);
    font-weight: 800;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.title-battle {
    font-size: clamp(3.8rem, 14vw, 6.5rem);
    font-weight: 900;
    letter-spacing: -0.04em;
    line-height: 0.95;
    background: linear-gradient(135deg, var(--orange) 0%, #EF4444 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.landing-tagline {
    font-size: clamp(0.95rem, 3.2vw, 1.05rem);
    color: var(--text-muted);
    margin: 0 auto 1.5rem;
    max-width: 360px;
    line-height: 1.6;
}

/* Stats strip */
.landing-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 1rem;
    padding: 1rem 1.25rem;
    margin-bottom: 1.25rem;
}

.stat-chip {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
}

.stat-num {
    font-size: clamp(1.6rem, 5.5vw, 2.2rem);
    font-weight: 900;
    letter-spacing: -0.03em;
    line-height: 1;
    color: var(--text);
}
.stat-num--orange { color: var(--orange); }
.stat-num--green  { color: var(--green); }
.stat-num--blue   { color: var(--blue); }

.stat-label {
    font-size: clamp(0.62rem, 2vw, 0.7rem);
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-top: 3px;
}

.stat-sep {
    font-size: 1.4rem;
    color: var(--border);
    font-weight: 300;
    user-select: none;
    flex-shrink: 0;
}

/* Learn section */
.learn-section {
    margin-bottom: 1.25rem;
}

.learn-label {
    font-size: clamp(0.65rem, 2.2vw, 0.75rem);
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin: 0 0 0.6rem;
}

.learn-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.learn-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background: var(--blue-dim);
    border: 1px solid rgba(96, 165, 250, 0.3);
    color: var(--blue);
    font-size: clamp(0.75rem, 2.4vw, 0.85rem);
    font-weight: 600;
    padding: 0.3rem 0.75rem;
    border-radius: 99px;
}

/* Rules */
.rules-heading {
    font-size: clamp(1rem, 3.5vw, 1.1rem);
    font-weight: 800;
    color: var(--text);
    text-align: center;
    justify-content: center;
    letter-spacing: 0.02em;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border) !important;
    border-top: none !important;
    padding-bottom: 0.75rem !important;
    margin-bottom: 0;
}

.game-rules {
    list-style: none;
    padding: 1rem 1.25rem;
    margin: 0 0 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0;
    text-align: left;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 1rem;
}

.game-rules li {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    padding: 0.75rem 0;
    font-size: clamp(0.95rem, 3.2vw, 1rem);
    color: var(--text-2);
}

.game-rules li strong { color: var(--text); }

.game-rules li + li {
    border-top: 1px solid var(--border);
}

.rule-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
    width: 1.5rem;
    text-align: center;
}
.rule-icon--clock   { color: var(--blue); }
.rule-icon--correct { color: var(--green); }
.rule-icon--wrong   { color: var(--red); }
.rule-icon--streak  { color: var(--orange); }
.rule-icon--trophy  { color: #FBBF24; }

.game-over-icon { color: #FBBF24; }

/* ===================== BUTTONS ===================== */

.primary-button {
    width: 100%;
    padding: 1.1rem 1.5rem;
    font-size: clamp(1.05rem, 4vw, 1.15rem);
    font-weight: 700;
    color: white;
    background: linear-gradient(135deg, var(--orange), #EA580C);
    border: none;
    border-radius: 0.875rem;
    box-shadow: 0 0 24px var(--orange-glow), 0 4px 16px rgba(0,0,0,0.35);
    cursor: pointer;
    transition: all 0.2s ease;
    letter-spacing: 0.02em;
    /* Ensure tall enough for comfortable tapping */
    min-height: 52px;
}

.primary-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 36px var(--orange-glow), 0 8px 24px rgba(0,0,0,0.4);
}

.primary-button:active { transform: translateY(0); }

.start-button {
    width: 100%;
    padding: 1.1rem 1.5rem;
    font-size: clamp(1.05rem, 4vw, 1.15rem);
    font-weight: 700;
    color: white;
    background: linear-gradient(135deg, var(--green), #16A34A);
    border: none;
    border-radius: 0.875rem;
    box-shadow: 0 0 24px var(--green-glow), 0 4px 16px rgba(0,0,0,0.35);
    cursor: pointer;
    transition: all 0.2s ease;
    letter-spacing: 0.02em;
    margin-top: 2rem;
    min-height: 52px;
}

.start-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 36px var(--green-glow), 0 8px 24px rgba(0,0,0,0.4);
}

.start-button:active { transform: translateY(0); }

.setup-high-score {
    font-size: clamp(1rem, 3.5vw, 1.1rem);
    color: var(--text-2);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.setup-high-score span { color: var(--orange); font-weight: 800; }

.tertiary-button {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-weight: 600;
    font-size: clamp(0.9rem, 3vw, 1rem);
    cursor: pointer;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: all 0.2s ease;
    min-height: 40px;
}

.tertiary-button:hover {
    background: var(--surface);
    color: var(--text-2);
    border-color: var(--border-2);
}

/* ===================== SETUP PAGE ===================== */

#game-setup { padding: 0.75rem 0 0; }

.back-row { text-align: left; margin-bottom: 2rem; }

.setup-group { margin-bottom: 2.5rem; text-align: left; }

.setup-group-label {
    font-size: clamp(1.3rem, 4.5vw, 1.6rem);
    font-weight: 800;
    letter-spacing: -0.01em;
    text-transform: none;
    color: var(--text);
    margin-bottom: 1.25rem;
    display: block;
    text-align: center;
}

.selection-card-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.selection-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0.875rem;
    padding: 0.85rem 0.75rem;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 0.2rem;
    color: var(--text-muted);
    transition: all 0.18s ease;
    user-select: none;
    min-height: clamp(68px, 17vw, 84px);
}

.card-title {
    font-weight: 700;
    font-size: clamp(0.92rem, 3vw, 1rem);
    color: inherit;
    line-height: 1.2;
}

.card-desc {
    font-size: clamp(0.65rem, 1.9vw, 0.72rem);
    font-weight: 500;
    color: var(--text-muted);
    line-height: 1.3;
}

.selection-card:hover {
    border-color: var(--border-2);
    color: var(--text-2);
    background: var(--surface-2);
}

.selection-card:active {
    transform: scale(0.97);
    background: var(--orange-dim);
    border-color: var(--orange);
    color: var(--orange);
}

.selection-card.active {
    background: var(--orange-dim);
    border-color: var(--orange);
    color: var(--orange);
    box-shadow: 0 0 14px var(--orange-glow);
}

#answer-type-group .selection-card:hover {
    border-color: var(--border-2);
    color: var(--text-2);
    background: var(--surface-2);
}

#answer-type-group .selection-card:active {
    transform: scale(0.97);
    background: var(--blue-dim);
    border-color: var(--blue);
    color: var(--blue);
}

#answer-type-group .selection-card.active {
    background: var(--blue-dim);
    border-color: var(--blue);
    color: var(--blue);
    box-shadow: 0 0 14px var(--blue-glow);
}

/* ===================== GAME PLAY ===================== */

#game-play { padding: 0; }

.timer-container {
    width: 100%;
    height: 7px;
    background: var(--surface);
    border-radius: 99px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.timer-bar-inner {
    height: 100%;
    width: 100%;
    background: var(--green);
    border-radius: 99px;
    transition: width 0.8s linear, background-color 0.4s ease;
}

.game-hud {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.6rem;
    margin-bottom: 0.6rem;
}

.hud-chip {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0.875rem;
    padding: 0.5rem 1rem;
    min-width: clamp(72px, 20vw, 96px);
}

.hud-label {
    font-size: clamp(0.65rem, 2vw, 0.75rem);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    line-height: 1;
    margin-bottom: 3px;
}

.hud-value {
    font-size: clamp(1.6rem, 5.5vw, 2rem);
    font-weight: 800;
    color: var(--text);
    line-height: 1.1;
    font-variant-numeric: tabular-nums;
}

.score-chip  .hud-value { color: var(--orange); }
.streak-chip .hud-value { color: var(--green); }

.timer-display {
    font-size: clamp(2.5rem, 9vw, 3.5rem);
    font-weight: 900;
    color: var(--text);
    letter-spacing: -0.03em;
    font-variant-numeric: tabular-nums;
    line-height: 1;
}

.back-row { text-align: right; margin-bottom: 0.75rem; }

.bottom-action-row {
    text-align: center;
    margin-top: 2.5rem;
}

.challenge-label {
    font-size: clamp(0.72rem, 2.2vw, 0.82rem);
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.card.challenge {
    background: var(--surface);
    border: 1px solid var(--border);
    border-top: 3px solid var(--orange);
    border-radius: 1rem;
    min-height: clamp(110px, 28vw, 155px);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: clamp(1.3rem, 4.5vw, 2rem);
    font-weight: 800;
    color: var(--text);
    letter-spacing: -0.02em;
    line-height: 1.25;
    margin-bottom: 1.5rem;
    overflow-wrap: break-word;
    word-break: break-word;
    box-shadow: 0 0 0 1px rgba(255,255,255,0.04) inset, 0 8px 32px rgba(0,0,0,0.4);
}

.instruction-text {
    font-size: clamp(0.72rem, 2.2vw, 0.82rem);
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin: 0 0 1rem;
}

/* Options 2×2 grid */
#options-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0.875rem;
    padding: 1rem 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: clamp(0.88rem, 3.4vw, 1.1rem);
    font-weight: 600;
    color: var(--text-2);
    transition: transform 0.1s ease, background 0.1s ease, border-color 0.1s ease;
    line-height: 1.35;
    overflow-wrap: break-word;
    word-break: break-word;
    hyphens: auto;
}

#options-container .card {
    cursor: pointer;
    min-height: clamp(84px, 23vw, 110px);
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

#options-container .card:hover {
    border-color: var(--border-2);
    transform: translateY(-2px);
}

#options-container .card:active {
    border-color: var(--border-2);
    transform: scale(0.95);
}

/* On touch devices — disable ALL hover/active visual states completely */
@media (hover: none) {
    #options-container .card:hover,
    #options-container .card:active {
        background: var(--surface);
        border-color: var(--border);
        transform: none;
    }
}

.card.correct {
    border-color: var(--green);
    color: var(--green) !important;
    font-weight: 700;
}

.card.incorrect {
    border-color: var(--red);
    color: var(--red) !important;
    font-weight: 700;
}

/* ===================== GAME OVER ===================== */

#game-over { padding: 2rem 1rem; }

.game-over-icon {
    display: block;
    font-size: clamp(3rem, 11vw, 4.5rem);
    margin-bottom: 0.25rem;
}

.rating-label {
    font-size: clamp(1.3rem, 4.5vw, 1.8rem);
    font-weight: 800;
    color: var(--text);
    margin: 0 0 0.75rem;
}

.final-score-label {
    color: var(--text-muted);
    font-size: clamp(0.75rem, 2.3vw, 0.85rem);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin: 0 0 0.2rem;
}

.final-score-display {
    font-size: clamp(5.5rem, 20vw, 9rem);
    font-weight: 900;
    color: var(--orange);
    letter-spacing: -0.04em;
    line-height: 1;
    margin-bottom: 0.75rem;
    text-shadow: 0 0 48px var(--orange-glow);
}

.game-over-details {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}

.go-detail-chip {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 0.5rem 1.25rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.go-detail-label {
    font-size: clamp(0.62rem, 1.9vw, 0.7rem);
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.go-detail-value {
    font-size: clamp(1.4rem, 5vw, 1.8rem);
    font-weight: 900;
    color: var(--orange);
    line-height: 1.1;
}

.go-new-record {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background: rgba(251, 191, 36, 0.12);
    border: 1px solid #FBBF24;
    color: #FBBF24;
    font-size: clamp(0.8rem, 2.5vw, 0.88rem);
    font-weight: 700;
    padding: 0.4rem 0.9rem;
    border-radius: 99px;
    animation: pulse-record 1.4s ease infinite;
}

.game-over-mode {
    font-size: clamp(0.75rem, 2.3vw, 0.82rem);
    font-weight: 600;
    color: var(--text-muted);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 99px;
    padding: 0.3rem 1rem;
    display: inline-block;
    margin-bottom: 1.5rem;
}

.game-over-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

/* ── Game Over Upsell Card ── */
.go-upsell {
    background: linear-gradient(145deg, #0f1f2e 0%, #0D3D47 60%, #134a58 100%);
    border: 1px solid rgba(245, 146, 30, 0.35);
    border-radius: 1.25rem;
    padding: 1.5rem 1.35rem 1.35rem;
    margin-bottom: 1.5rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.go-upsell::before {
    content: '';
    position: absolute;
    top: -60px; right: -60px;
    width: 180px; height: 180px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(245,146,30,.12) 0%, transparent 70%);
    pointer-events: none;
}
.go-upsell.hidden { display: none; }
.go-upsell-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: rgba(245,146,30,.15);
    border: 1px solid rgba(245,146,30,.35);
    color: #F5921E;
    border-radius: 99px;
    padding: 0.28rem 0.9rem;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 0.85rem;
}
.go-upsell-headline {
    font-size: clamp(1rem, 3.5vw, 1.2rem);
    font-weight: 900;
    color: #fff;
    margin-bottom: 0.5rem;
    line-height: 1.3;
}
.go-upsell-sub {
    font-size: clamp(0.78rem, 2.5vw, 0.85rem);
    color: rgba(255,255,255,.65);
    line-height: 1.65;
    margin-bottom: 1rem;
    max-width: 320px;
    margin-left: auto;
    margin-right: auto;
}
.go-upsell-features {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-bottom: 1.1rem;
    text-align: left;
    max-width: 280px;
    margin-left: auto;
    margin-right: auto;
}
.go-upsell-feat {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.82rem;
    font-weight: 700;
    color: rgba(255,255,255,.82);
}
.go-upsell-feat i {
    color: #4ade80;
    font-size: 0.75rem;
    flex-shrink: 0;
}
.go-upsell-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    background: #F5921E;
    color: #fff;
    text-decoration: none;
    border-radius: 99px;
    padding: 0.75rem 1.75rem;
    font-size: 0.92rem;
    font-weight: 800;
    font-family: inherit;
    transition: background 0.15s, transform 0.15s;
    margin-bottom: 0.65rem;
    position: relative;
    z-index: 1;
}
.go-upsell-btn:hover { background: #C8700A; transform: translateY(-2px); }
.go-upsell-note {
    font-size: 0.68rem;
    color: rgba(255,255,255,.35);
    font-weight: 600;
    position: relative;
    z-index: 1;
}

/* Learning reveal */
.learning-reveal {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: var(--blue-dim);
    border: 1px solid rgba(96, 165, 250, 0.3);
    border-radius: 0.875rem;
    padding: 0.6rem 1rem;
    color: var(--blue);
    font-size: clamp(0.8rem, 2.6vw, 0.9rem);
    font-weight: 600;
    margin-top: 0.75rem;
    animation: slide-in-up 0.25s ease;
}

/* ===================== ANIMATIONS ===================== */

.shake { animation: shake 0.5s cubic-bezier(.36,.07,.19,.97) both; }

@keyframes shake {
    10%, 90% { transform: translate3d(-2px, 0, 0); }
    20%, 80% { transform: translate3d(3px, 0, 0); }
    30%, 50%, 70% { transform: translate3d(-5px, 0, 0); }
    40%, 60% { transform: translate3d(5px, 0, 0); }
}

.time-change-indicator {
    position: fixed;
    top: 5rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    font-size: clamp(1.5rem, 5vw, 2rem);
    font-weight: 800;
    pointer-events: none;
    animation: float-up 1.2s ease-out forwards;
    letter-spacing: -0.02em;
}

.time-change-indicator.correct {
    color: var(--green);
    text-shadow: 0 0 12px var(--green-glow);
}

.time-change-indicator.incorrect {
    color: var(--red);
    text-shadow: 0 0 12px var(--red-glow);
}

@keyframes float-up {
    from { opacity: 1; transform: translate(-50%, 0); }
    to   { opacity: 0; transform: translate(-50%, -3rem); }
}

@keyframes slide-in-up {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse-record {
    0%, 100% { box-shadow: 0 0 8px rgba(251, 191, 36, 0.3); }
    50%       { box-shadow: 0 0 22px rgba(251, 191, 36, 0.65); }
}

/* ===================== RESPONSIVE ===================== */

/* Tablet and up — layout adjustments only, typography handled by clamp() */
@media (min-width: 640px) {
    body { align-items: center; padding: 2rem; }

    .card.challenge { min-height: 160px; }
    #options-container .card { min-height: 100px; }
    .selection-card { min-height: 80px; }
}

/* ===================== PREMIUM LOCK ===================== */

.selection-card.locked {
    opacity: 0.45;
    cursor: not-allowed;
    position: relative;
}

.selection-card.locked::after {
    content: '🔒';
    position: absolute;
    top: 0.35rem;
    right: 0.45rem;
    font-size: 0.7rem;
    line-height: 1;
}

/* Override all hover/active states for locked cards */
.selection-card.locked:hover,
.selection-card.locked:active,
#answer-type-group .selection-card.locked:hover,
#answer-type-group .selection-card.locked:active {
    background: var(--surface) !important;
    border-color: var(--border) !important;
    color: var(--text-muted) !important;
    transform: none !important;
    box-shadow: none !important;
}

/* Premium Modal */
.premium-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.78);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    padding: 1.5rem;
}

.premium-modal-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-top: 3px solid #FBBF24;
    border-radius: 1rem;
    padding: 2rem 1.75rem;
    max-width: 360px;
    width: 100%;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.85rem;
}

.premium-modal-icon {
    font-size: 2.25rem;
    color: #FBBF24;
}

.premium-modal-card h2 {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--text);
}

.premium-modal-card > p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 0;
}

.premium-modal-free-note {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--green);
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.premium-modal-card .primary-button,
.premium-modal-card .tertiary-button {
    width: 100%;
}

/* ===================== UTILITY ===================== */

.hidden, 
#landing-page.hidden, 
#game-setup.hidden, 
#game-play.hidden, 
#game-over.hidden { 
    display: none !important; 
}

/* ============================================================
   DRUG CARD BATTLE — Loading overlay
   Shown while drugs are fetched from Supabase
   ============================================================ */

.dcb-loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.92);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.dcb-loading-overlay.hidden {
    display: none !important;
}

.dcb-loading-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.dcb-spinner {
    width: 44px;
    height: 44px;
    border: 4px solid rgba(249, 115, 22, 0.2);
    border-top-color: #F97316;
    border-radius: 50%;
    animation: dcb-spin 0.75s linear infinite;
}

@keyframes dcb-spin {
    to { transform: rotate(360deg); }
}

.dcb-loading-text {
    color: rgba(241, 245, 249, 0.7);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.02em;
}