:root {
  color-scheme: light;
  --bg: #f4ead7;
  --panel: rgba(255, 249, 238, 0.94);
  --panel-strong: #fffdf8;
  --line: #2e261d;
  --line-soft: rgba(46, 38, 29, 0.18);
  --ink-soft: #6f6558;
  --accent: #cb5c2d;
  --accent-2: #2f7b5e;
  --accent-3: #b6851c;
  --danger: #a64032;
  --danger-soft: rgba(166, 64, 50, 0.12);
  --glow: rgba(255, 205, 120, 0.55);
  --shadow: 0 18px 60px rgba(64, 36, 19, 0.14);
  font-family: "Avenir Next", "Trebuchet MS", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top, rgba(255, 236, 190, 0.72), transparent 28%),
    linear-gradient(180deg, #efe4d0 0%, #f7f0e8 46%, #eadac3 100%);
  color: var(--line);
}

button,
textarea,
img {
  display: block;
  font: inherit;
}

button,
label {
  -webkit-tap-highlight-color: transparent;
}

.app-shell {
  min-height: 100vh;
  padding: 20px 16px 40px;
}

.intro-panel {
  max-width: 460px;
  margin: 0 auto 8px;
  text-align: center;
}

.eyebrow,
.tiny-label,
.hint-text,
.basket-ascii,
.sentence-index {
  font-family: "Courier New", monospace;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow,
.tiny-label {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.72rem;
}

.intro-panel h1 {
  margin: 8px 0 10px;
  font-size: clamp(2.3rem, 5vw, 3rem);
  line-height: 0.95;
}

.intro-copy {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1rem;
}

.eyebrow,
.intro-copy,
.topbar,
.hint-text,
.data-copy {
  display: none;
}

.phone-frame {
  width: min(100%, 460px);
  margin: 0 auto;
  padding: 12px;
  border: 2px solid rgba(46, 38, 29, 0.16);
  border-radius: 32px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.topbar,
.feedback-meta,
.controls,
.data-actions {
  display: flex;
  gap: 10px;
}

.topbar {
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.stat-chip,
.playfield,
.feedback-panel,
.challenge-card,
.sentence-option,
.builder-panel,
.data-panel {
  border: 1.5px solid var(--line-soft);
  background: var(--panel-strong);
}

.stat-chip {
  flex: 1 1 100px;
  min-width: 0;
  padding: 10px 12px;
  border-radius: 18px;
}

.stat-label {
  display: block;
  color: var(--ink-soft);
  font-size: 0.74rem;
  text-transform: uppercase;
}

.mode-panel {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 12px;
}

.mode-button,
.secondary-button,
.ghost-button,
.voice-button,
.sentence-option,
.basket-button,
.builder-submit {
  border: 1.5px solid var(--line-soft);
  cursor: pointer;
  transition: transform 140ms ease, box-shadow 140ms ease, border-color 140ms ease, background 140ms ease;
}

.mode-button {
  padding: 12px 10px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.65);
  font-size: 0.9rem;
  font-weight: 700;
}

.mode-button.is-active {
  border-color: rgba(203, 92, 45, 0.35);
  background: linear-gradient(135deg, rgba(255, 238, 222, 0.96), rgba(255, 248, 237, 0.96));
  box-shadow: 0 12px 28px rgba(203, 92, 45, 0.12);
}

.data-panel {
  padding: 8px;
  border-radius: 18px;
  margin-bottom: 10px;
}

.data-actions {
  flex-direction: row;
  flex-wrap: wrap;
  align-items: stretch;
  justify-content: center;
}

.secondary-button,
.ghost-button,
.voice-button,
.builder-submit {
  padding: 10px 12px;
  border-radius: 14px;
  background: #fff8ef;
  color: var(--line);
  text-align: center;
  font-weight: 700;
}

.link-button {
  color: var(--line);
  text-decoration: none;
}

.secondary-button {
  background: linear-gradient(135deg, rgba(244, 162, 93, 0.18), rgba(255, 245, 230, 0.92));
}

.ghost-button {
  background: rgba(46, 38, 29, 0.04);
}

.playfield {
  padding: 14px;
  border-radius: 24px;
}

.playfield-header {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 10px;
  align-items: start;
  margin-bottom: 10px;
}

.mode-block,
.level-block {
  text-align: right;
}

.level-block,
.feedback-meta span:last-child {
  display: none;
}

.pause-button {
  grid-column: 1 / -1;
  width: 100%;
  padding: 14px 16px;
  border: 0;
  border-radius: 18px;
  background: linear-gradient(135deg, #d44f3d, #b93e2f);
  color: white;
  font-weight: 800;
  font-size: 1rem;
  cursor: pointer;
}

.pause-button:disabled {
  opacity: 0.5;
  cursor: default;
}

.fall-lane {
  position: relative;
  height: 230px;
  overflow: hidden;
  border-radius: 22px;
  background:
    linear-gradient(180deg, rgba(255, 245, 220, 0.95), rgba(243, 224, 194, 0.75)),
    linear-gradient(90deg, rgba(0, 0, 0, 0.04), transparent 12%, transparent 88%, rgba(0, 0, 0, 0.04));
}

.fall-track {
  position: absolute;
  inset: 18px calc(50% - 1px) 22px;
  width: 2px;
  background: repeating-linear-gradient(
    to bottom,
    rgba(46, 38, 29, 0.18),
    rgba(46, 38, 29, 0.18) 8px,
    transparent 8px,
    transparent 16px
  );
}

.danger-line {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 20px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, rgba(166, 64, 50, 0.55), transparent);
}

.falling-word {
  position: absolute;
  left: 50%;
  top: 16%;
  transform: translate(-50%, -50%);
  min-width: 150px;
  max-width: calc(100% - 30px);
  padding: 12px 18px;
  border: 2px solid rgba(46, 38, 29, 0.24);
  border-radius: 999px;
  background: #fff8ef;
  box-shadow: 0 8px 20px rgba(46, 38, 29, 0.13);
  text-align: center;
  font-family: "Courier New", monospace;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.timer-block {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
}

.timer-rail {
  flex: 1;
  height: 10px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(46, 38, 29, 0.12);
}

.timer-fill {
  height: 100%;
  width: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent-2), #a6cf7a, #f5b366, var(--danger));
  transform-origin: left center;
}

.challenge-panel {
  margin: 14px 0;
}

.challenge-card,
.builder-panel {
  border-radius: 22px;
  padding: 12px;
}

.basket-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.basket-button {
  padding: 8px;
  border-radius: 20px;
  background: var(--panel-strong);
  box-shadow: 0 10px 25px rgba(46, 38, 29, 0.08);
}

.basket-button:hover,
.mode-button:hover,
.sentence-option:hover,
.voice-button:hover,
.secondary-button:hover,
.ghost-button:hover,
.builder-submit:hover {
  transform: translateY(-1px);
}

.basket-button.is-featured {
  transform: scale(1.05);
  border-color: rgba(203, 92, 45, 0.35);
}

.basket-button.is-correct,
.sentence-option.is-correct {
  border-color: rgba(47, 123, 94, 0.9);
  box-shadow: 0 0 0 4px rgba(47, 123, 94, 0.12), 0 12px 30px rgba(47, 123, 94, 0.18);
}

.basket-button.is-wrong,
.sentence-option.is-wrong {
  border-color: rgba(166, 64, 50, 0.85);
  box-shadow: 0 0 0 4px rgba(166, 64, 50, 0.12);
}

.basket-ascii {
  margin: 0 0 6px;
  color: var(--ink-soft);
  font-size: 0.72rem;
  text-align: center;
}

.basket-image {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 16px;
  background: #efe7da;
}

.basket-label {
  margin: 8px 0 0;
  text-align: center;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--ink-soft);
}

.sentence-stack {
  display: grid;
  gap: 10px;
}

.sentence-option {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  align-items: start;
  width: 100%;
  padding: 12px;
  border-radius: 18px;
  background: var(--panel-strong);
  text-align: left;
}

.sentence-index {
  margin-top: 2px;
  color: var(--ink-soft);
  font-size: 0.72rem;
}

.sentence-text {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.45;
}

.sentence-translation {
  margin: 8px 0 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.voice-row,
.builder-actions {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

.voice-button {
  flex: 1;
  background: linear-gradient(135deg, rgba(47, 123, 94, 0.16), rgba(255, 253, 248, 0.96));
}

.voice-button.is-listening {
  border-color: rgba(47, 123, 94, 0.8);
  box-shadow: 0 0 0 4px rgba(47, 123, 94, 0.12);
}

.builder-prompt {
  margin: 8px 0 10px;
  color: var(--ink-soft);
}

.builder-textarea {
  width: 100%;
  min-height: 120px;
  resize: vertical;
  padding: 12px;
  border: 1.5px solid var(--line-soft);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.94);
  color: var(--line);
}

.builder-textarea:focus {
  outline: 2px solid rgba(203, 92, 45, 0.25);
  border-color: rgba(203, 92, 45, 0.38);
}

.builder-submit {
  flex: 1;
  background: linear-gradient(135deg, rgba(203, 92, 45, 0.16), rgba(255, 249, 238, 0.96));
}

.builder-helper {
  margin: 10px 0 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.empty-state {
  padding: 20px 16px;
  border: 1.5px dashed rgba(46, 38, 29, 0.2);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.5);
  text-align: center;
  color: var(--ink-soft);
}

.feedback-panel {
  display: grid;
  grid-template-columns: 1.4fr 112px;
  gap: 12px;
  padding: 12px;
  border-radius: 22px;
}

.feedback-copy h2 {
  margin: 6px 0 8px;
  font-size: 1.2rem;
}

.feedback-copy p {
  margin: 0;
}

.feedback-transcript {
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: 0.84rem;
}

.feedback-meta {
  flex-wrap: wrap;
  margin-top: 12px;
  color: var(--ink-soft);
  font-size: 0.84rem;
}

.feedback-preview {
  width: 112px;
  height: 112px;
  padding: 6px;
  border-radius: 18px;
  background: rgba(46, 38, 29, 0.04);
}

.feedback-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 14px;
}

.controls {
  flex-direction: column;
  align-items: stretch;
  margin-top: 12px;
}

.primary-button {
  width: 100%;
  padding: 14px 16px;
  border: 0;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--accent), #df8e3a);
  color: white;
  font-size: 1rem;
  font-weight: 800;
  cursor: pointer;
}

.retry-button {
  width: 100%;
  padding: 13px 16px;
  border-radius: 18px;
  font-size: 0.98rem;
}

.retry-button:disabled,
.primary-button:disabled {
  opacity: 0.58;
  cursor: default;
}

.hint-text {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.68rem;
  text-align: center;
}

.round-complete .fall-lane {
  box-shadow: inset 0 0 0 3px var(--glow);
}

.is-hidden {
  display: none !important;
}

@media (max-width: 520px) {
  .app-shell {
    padding: 14px 10px 30px;
  }

  .phone-frame {
    padding: 12px;
    border-radius: 26px;
  }

  .mode-panel {
    grid-template-columns: 1fr;
  }

  .data-panel {
    grid-template-columns: 1fr;
  }

  .feedback-panel {
    grid-template-columns: 1fr 88px;
  }

  .feedback-preview {
    width: 88px;
    height: 88px;
  }

  .fall-lane {
    height: 210px;
  }
}