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

[hidden] {
  display: none !important;
}

/* === Disable web-like behaviors in the app shell === */
html,
body {
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation; /* disables double-tap zoom */
  overscroll-behavior: none;
}

/* Re-enable selection where it actually makes sense (e.g. trivia text) */
.feedback-trivia,
.intro-text,
#hint-text {
  -webkit-user-select: text;
  user-select: text;
}

/* === Theme === */
:root {
  --color-primary: #6A3DFF;
  --color-primary-hover: #5830d9;
  --color-bg: #0D1B4C;
  --color-bg-surface: rgba(255, 255, 255, 0.08);
  --color-text: #f5f5f7;
  --color-text-muted: #b0b8d0;
  --color-border: rgba(255, 255, 255, 0.12);
  --color-correct: #B9FF4A;
  --color-wrong: #ff5e57;
  --color-warning: #FFC400;
  --color-accent: #00D4FF;
  --color-yellow: #FFC400;
  --color-pink: #FFD8E6;

  --font-family: 'Rubik', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --max-width: 600px;
  --radius: 1rem;
  --radius-lg: 1.5rem;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
}

/* === Base === */
html {
  font-size: 16px;
  width: 100%;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg) url('/assets/background1.svg') no-repeat center center / cover fixed;
  color: var(--color-text);
  line-height: 1.5;
  min-height: 100dvh;
  width: 100%;
}

/* === Main === */
/* Safe-area insets: iPhones with notch/Dynamic Island need top padding,
   iPhones with home indicator (no home button) need bottom padding.
   These zones are reserved as a "grace area" — background draws here,
   but no important content or interactions are placed in them. */
main {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding:
    calc(var(--spacing-lg) + env(safe-area-inset-top))
    calc(var(--spacing-md) + env(safe-area-inset-right))
    calc(var(--spacing-lg) + env(safe-area-inset-bottom))
    calc(var(--spacing-md) + env(safe-area-inset-left));
}

/* === Quiz Grid === */
.quiz-grid {
  display: grid;
  gap: var(--spacing-md);
}

.quiz-card {
  display: block;
  padding: var(--spacing-lg);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--color-text);
  transition: transform 0.15s, box-shadow 0.15s;
  backdrop-filter: blur(8px);
}

.quiz-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(106, 61, 255, 0.2);
}

.quiz-card__title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.quiz-card__topic {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* === Screen utility === */
.screen {
  animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === Buttons === */
.btn-primary {
  display: block;
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, transform 0.15s;
  margin-top: var(--spacing-md);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  display: block;
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--color-bg-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, transform 0.15s;
  margin-top: var(--spacing-sm);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-1px);
}

.btn-back {
  background: none;
  border: none;
  color: var(--color-accent);
  font-size: 1rem;
  cursor: pointer;
  padding: var(--spacing-xs) 0;
  margin-bottom: var(--spacing-md);
}

.text-muted {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* === Intro screen === */
.glass-card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  backdrop-filter: blur(12px);
}

.intro-text {
  color: var(--color-text-muted);
  font-style: italic;
  margin: var(--spacing-md) 0;
  line-height: 1.6;
}

.intro-meta {
  display: flex;
  gap: var(--spacing-sm);
  margin: var(--spacing-md) 0;
}

.meta-badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--color-accent);
  backdrop-filter: blur(8px);
}

/* === Play screen === */
.play-header {
  margin-bottom: var(--spacing-lg);
}

.progress-text {
  display: block;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.progress-bar {
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 3px;
  transition: width 0.3s ease;
}

.question-text {
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: var(--spacing-lg);
}

/* === Options === */
.options-grid {
  display: flex;
  flex-direction: column;
}

.option-btn {
  display: block;
  width: 100%;
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  background: var(--color-bg-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: 1rem;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, transform 0.15s;
  color: var(--color-text);
  overflow: hidden;
  max-height: 200px;
  backdrop-filter: blur(8px);
}

.option-btn:hover:not(:disabled) {
  border-color: var(--color-accent);
  transform: translateY(-1px);
}

.option-btn:disabled {
  cursor: default;
  opacity: 0.85;
}

.option-collapse {
  max-height: 0;
  max-width: 0;
  padding: 0;
  margin-top: 0;
  margin-bottom: 0;
  margin-left: auto;
  margin-right: auto;
  border-width: 0;
  opacity: 0;
  transition: max-height 0.18s ease, max-width 0.18s ease, padding 0.18s ease, margin 0.18s ease, border-width 0.18s ease, opacity 0.18s ease;
}

.option-pop-in {
  animation: popIn var(--pop-duration, 0.4s) cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

@keyframes popIn {
  0% {
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    border-width: 0;
    opacity: 0;
    transform: scale(0.8);
  }
  60% {
    max-height: 200px;
    padding-top: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-width: 2px;
    opacity: 1;
    transform: scale(1.04);
  }
  80% {
    transform: scale(0.97);
  }
  100% {
    max-height: 200px;
    padding-top: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-width: 2px;
    opacity: 1;
    transform: scale(1);
  }
}

.option-correct {
  border-color: var(--color-correct) !important;
  background: rgba(185, 255, 74, 0.1);
}

.option-wrong {
  border-color: var(--color-wrong) !important;
  background: rgba(255, 94, 87, 0.1);
}

/* === Feedback === */
.feedback {
  margin-top: var(--spacing-lg);
  padding: var(--spacing-md);
  background: var(--color-bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(8px);
}

.feedback-pop-in {
  animation: feedbackWobble 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) both;
  animation-delay: 0.4s;
}

@keyframes feedbackWobble {
  0% {
    opacity: 0;
    transform: scale(0.85) translateY(12px);
  }
  50% {
    opacity: 1;
    transform: scale(1.03) translateY(-2px);
  }
  70% {
    transform: scale(0.98) translateY(1px);
  }
  85% {
    transform: scale(1.01);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.feedback-result {
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: var(--spacing-sm);
}

.feedback-correct {
  color: var(--color-correct);
}

.feedback-wrong {
  color: var(--color-wrong);
}

.feedback-trivia {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.5;
  margin-bottom: var(--spacing-md);
}

/* === Hints === */
.hints {
  margin-top: var(--spacing-md);
  text-align: center;
}

.btn-hint {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: var(--spacing-xs) var(--spacing-md);
  color: var(--color-text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color 0.15s;
}

.btn-hint:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.hint-text {
  margin-top: var(--spacing-sm);
  color: var(--color-yellow);
  font-size: 0.9rem;
  font-style: italic;
}

/* === Result screen === */
.result-summary {
  text-align: center;
  padding: var(--spacing-xl) 0;
}

.result-score {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-primary);
}

.result-message {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  margin-top: var(--spacing-sm);
}

.result-details {
  margin: var(--spacing-lg) 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-xs);
}

.result-dot {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  background: var(--color-border);
}

.result-dot--correct {
  background: var(--color-correct);
}

.result-dot--wrong {
  background: var(--color-wrong);
}

.result-actions {
  margin-top: var(--spacing-lg);
}

/* === Welcome Screen === */
#welcome {
  text-align: center;
}

.welcome-logo {
  display: block;
  height: 9rem;
  width: auto;
  margin: 0 auto var(--spacing-lg);
}

/* .welcome-mascot {
  margin: var(--spacing-md) auto var(--spacing-lg);
} */

.mascot-img {
  height: 266px;
	width: auto;
}

.welcome-buttons {
  display: grid;
  gap: var(--spacing-md);
  max-width: 320px;
  margin: 0 auto var(--spacing-lg);
}

.btn-glass {
  display: block;
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  border: none;
  border-radius: 999px;
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  background: linear-gradient(135deg, #ffb347, #ff9500);
  color: #1a1a1a;
  box-shadow:
    0 4px 12px rgba(255, 149, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.btn-glass:hover {
  transform: translateY(-2px);
  box-shadow:
    0 6px 16px rgba(255, 149, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.btn-glass:active {
  transform: translateY(0);
}

.btn-glass--alt {
  background: linear-gradient(135deg, #ffd166, #ffb347);
  box-shadow:
    0 4px 12px rgba(255, 179, 71, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.btn-glass--alt:hover {
  box-shadow:
    0 6px 16px rgba(255, 179, 71, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

/* === Streak Display === */
.welcome-streak {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  margin: 0 auto var(--spacing-lg);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  width: fit-content;
}

.streak-flame {
  font-size: 1.3rem;
}

.streak-text {
  font-weight: 600;
  font-size: 0.95rem;
}

/* === Badge Timeline === */
.badge-timeline {
  margin: var(--spacing-md) auto 0;
  text-align: center;
}

/* Overlapping badge row on welcome screen */
.badge-row {
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: var(--spacing-sm) var(--spacing-md);
}

.badge-shield {
  width: 2.6rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary) 100%);
  clip-path: polygon(50% 0%, 100% 15%, 100% 75%, 50% 100%, 0% 75%, 0% 15%);
  flex-shrink: 0;
  margin-right: -0.6rem;
  position: relative;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.badge-shield__emoji {
  font-size: 1.2rem;
  line-height: 1;
}

.badge-arrow {
  margin-left: 0.6rem;
  font-size: 1.2rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 0.2rem;
  flex-shrink: 0;
}

.badge-arrow__q {
  font-size: 1rem;
}

.badge-empty-hint {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-top: var(--spacing-sm);
}

/* Badge list screen */
.badge-list-items {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  max-width: 420px;
  margin: 0 auto;
}

.badge-list-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-surface);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(8px);
}

.badge-list-item--locked {
  opacity: 0.45;
}

.badge-shield--lg {
  width: 3.2rem;
  height: 3.6rem;
  margin-right: 0;
}

.badge-shield__emoji--lg {
  font-size: 1.5rem;
}

.badge-shield--locked {
  background: linear-gradient(135deg, var(--color-border) 0%, var(--color-bg-surface) 100%);
}

.badge-list-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.badge-list-name {
  font-weight: 700;
  font-size: 1rem;
}

.badge-list-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.3;
}

.badge-list-desc--locked {
  font-style: italic;
}

.badge-list-date {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

.badge-tier {
  font-size: 0.65rem;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 999px;
  vertical-align: middle;
  margin-left: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-tier--epic {
  background: var(--color-primary);
  color: #fff;
}

.badge-tier--legend {
  background: var(--color-yellow);
  color: #0D1B4C;
}

/* === Screen Nav (Home link) === */
.screen-nav {
  margin-bottom: var(--spacing-md);
}

.nav-home {
  display: inline-block;
  font-size: 1.4rem;
  text-decoration: none;
  transition: transform 0.15s;
  line-height: 1;
}

.nav-home:hover {
  transform: scale(1.15);
}