:root {
  --ink: #101518;
  --ink-soft: #2b343a;
  --paper: #f6f4ef;
  --sun: #f5d765;
  --mint: #57d2a9;
  --ocean: #2b6f8f;
  --coral: #e86d5a;
  --plum: #392f4c;
  --line: rgba(16, 21, 24, 0.1);
  --card: #fbfaf7;
  --shadow: 0 20px 50px rgba(16, 21, 24, 0.15);
  --radius: 24px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Sora", system-ui, sans-serif;
  background: radial-gradient(circle at top, #fff7d1 0%, transparent 45%),
    radial-gradient(circle at 15% 30%, rgba(87, 210, 169, 0.25) 0%, transparent 50%),
    radial-gradient(circle at 85% 20%, rgba(232, 109, 90, 0.25) 0%, transparent 55%),
    var(--paper);
  color: var(--ink);
  min-height: 100vh;
}

.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.08;
  background-image: repeating-linear-gradient(
      0deg,
      rgba(16, 21, 24, 0.2) 0,
      rgba(16, 21, 24, 0.2) 1px,
      transparent 1px,
      transparent 3px
    );
  z-index: 0;
}

.app {
  position: relative;
  z-index: 1;
  max-width: 820px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}

.masthead {
  display: grid;
  gap: 12px;
  margin-bottom: 26px;
  animation: fadeUp 0.7s ease both;
}

.masthead__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
}

.badge {
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  font-weight: 600;
}

.timezone {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.2rem);
  letter-spacing: -0.02em;
}

.lede {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.6;
}

main {
  display: grid;
  gap: 20px;
}

.card {
  background: linear-gradient(140deg, rgba(255, 255, 255, 0.6), rgba(255, 255, 255, 0.95));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  animation: fadeUp 0.6s ease both;
}

.day-banner {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(16, 21, 24, 0.08);
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.8rem;
}

h2 {
  margin: 12px 0 6px;
  font-size: clamp(1.5rem, 4vw, 2rem);
}

.day-title {
  margin: 0 0 8px;
  color: var(--ink-soft);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
}

.intro {
  margin: 0 0 18px;
  color: var(--ink-soft);
  line-height: 1.6;
}

.meta-row {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  margin-bottom: 20px;
}

.meta-chip {
  border-radius: 16px;
  padding: 12px;
  background: #fff;
  border: 1px solid var(--line);
  display: grid;
  gap: 4px;
}

.meta-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
}

.landing-actions {
  display: grid;
  gap: 12px;
}

.button {
  appearance: none;
  border: none;
  border-radius: 14px;
  padding: 14px 18px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 48px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button:focus-visible {
  outline: 3px solid rgba(43, 111, 143, 0.4);
  outline-offset: 2px;
}

.button--primary {
  background: var(--ink);
  color: #fff;
  box-shadow: 0 16px 30px rgba(16, 21, 24, 0.2);
}

.button--primary:hover {
  transform: translateY(-1px);
}

.button--ghost {
  background: #fff;
  border: 1px solid var(--line);
  color: var(--ink);
}

.coming {
  margin-top: 12px;
  color: var(--coral);
  font-weight: 600;
}

.hint {
  margin-top: 10px;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.82rem;
  color: var(--ink-soft);
}

.quiz__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.progress {
  display: grid;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.progress-bar {
  width: 140px;
  height: 6px;
  background: rgba(16, 21, 24, 0.1);
  border-radius: 999px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--ocean);
  width: 0;
  transition: width 0.3s ease;
}

.quiz-tag {
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(43, 111, 143, 0.15);
  color: var(--ocean);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.image-frame {
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--line);
  margin-bottom: 16px;
  aspect-ratio: 4 / 3;
  background: #f0f3f5;
}

.image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.3s ease;
}

.image-frame img.is-loading {
  opacity: 0.4;
}

.prompt {
  margin: 0 0 16px;
  font-size: 1.3rem;
}

.choices {
  display: grid;
  gap: 10px;
}

.choice {
  border-radius: 16px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  background: #fff;
  font-size: 1rem;
  text-align: left;
  transition: border 0.2s ease, transform 0.2s ease;
}

.choice:hover {
  transform: translateY(-1px);
}

.choice--disabled {
  cursor: default;
  opacity: 0.75;
}

.choice--correct {
  border-color: rgba(87, 210, 169, 0.6);
  background: rgba(87, 210, 169, 0.15);
}

.choice--wrong {
  border-color: rgba(232, 109, 90, 0.6);
  background: rgba(232, 109, 90, 0.1);
}

.choice--selected {
  box-shadow: 0 8px 18px rgba(16, 21, 24, 0.12);
}

.feedback {
  margin-top: 12px;
  min-height: 24px;
  font-weight: 600;
  color: var(--ink-soft);
}

.feedback--correct {
  color: #1f6f4a;
}

.feedback--mixed {
  color: #8a6a10;
}

.feedback--wrong {
  color: #b54633;
}

.results__summary {
  display: grid;
  gap: 8px;
  text-align: center;
}

.results__label {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.72rem;
  color: var(--ink-soft);
}

#score-value {
  font-size: 3rem;
  margin: 0;
}

.score-title {
  margin: 0;
  font-weight: 600;
  color: var(--ocean);
}

.best-note {
  margin: 0;
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.emoji-line {
  font-size: 1.7rem;
  letter-spacing: 0.2em;
}

.share {
  margin-top: 18px;
  background: #fff;
  border-radius: 18px;
  padding: 16px;
  border: 1px solid var(--line);
}

.share__header {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.share pre {
  margin: 0 0 12px;
  padding: 12px;
  background: rgba(16, 21, 24, 0.05);
  border-radius: 12px;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.9rem;
  white-space: pre-wrap;
}

.share__actions {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.copy-status {
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.share__fallback {
  width: 100%;
  margin-top: 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  padding: 10px;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.9rem;
}

.results__actions {
  margin-top: 16px;
  display: grid;
  gap: 10px;
}

.daylist h2 {
  margin-top: 0;
}

.day-buttons {
  display: grid;
  gap: 10px;
  margin-bottom: 16px;
}

.day-button {
  border-radius: 16px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  background: #fff;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
}

.day-button.is-active {
  border-color: rgba(43, 111, 143, 0.6);
  background: rgba(43, 111, 143, 0.12);
}

.footer {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--ink-soft);
  text-align: center;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 720px) {
  .landing-actions,
  .results__actions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .results__actions {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .share__actions {
    justify-content: space-between;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}