:root {
  color-scheme: dark;
  --bg: #071018;
  --surface: rgba(10, 23, 31, 0.92);
  --surface-2: rgba(18, 42, 57, 0.96);
  --border: rgba(109, 173, 201, 0.24);
  --text: #f6fbff;
  --muted: #a6bbc7;
  --accent: #22d3ee;
  --accent-2: #fbbf24;
  --good: #4ade80;
  --bad: #fb7185;
  --shadow: rgba(1, 8, 12, 0.42);
}

* { box-sizing: border-box; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 12% 10%, rgba(34, 211, 238, 0.18), transparent 28%),
    radial-gradient(circle at 86% 16%, rgba(251, 191, 36, 0.14), transparent 24%),
    linear-gradient(180deg, #071018, #081924 44%, #061118);
  color: var(--text);
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
}

button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: 0.56; }

#scrambleApp {
  min-height: 100vh;
}

.scramble-app {
  display: grid;
  gap: 1rem;
  min-height: 100vh;
  padding: clamp(0.9rem, 2vw, 1.5rem);
}

.scramble-header,
.scramble-panel,
.scramble-stage,
.leaderboard-panel,
.deck-panel {
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: var(--surface);
  box-shadow: 0 24px 54px var(--shadow);
}

.scramble-header {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: flex-end;
  padding: 1rem 1.15rem;
}

.scramble-title {
  margin: 0;
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
}

.scramble-subtitle,
.muted,
.panel-copy {
  color: var(--muted);
  line-height: 1.55;
}

.scramble-subtitle {
  margin: 0.6rem 0 0;
  max-width: 56rem;
}

.actions,
.toolbar,
.inline-actions,
.panel-actions,
.difficulty-grid,
.category-grid,
.entry-grid,
.stats-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button,
.mini-button {
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(8, 18, 25, 0.92);
  color: var(--text);
  padding: 0.8rem 1.1rem;
  text-decoration: none;
}

.button.primary,
.mini-button.primary {
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #071118;
  font-weight: 800;
}

.button.danger,
.mini-button.danger {
  color: #ffd5dd;
  border-color: rgba(251, 113, 133, 0.26);
}

.scramble-layout,
.scramble-live-layout {
  display: grid;
  gap: 1rem;
  align-items: start;
}

.scramble-panel,
.leaderboard-panel,
.deck-panel {
  padding: 1rem;
}

.field-grid {
  display: grid;
  gap: 0.9rem;
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field span {
  color: var(--muted);
  font-size: 0.95rem;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  padding: 0.85rem 0.95rem;
  background: rgba(7, 17, 23, 0.92);
  color: var(--text);
}

.field textarea {
  min-height: 5rem;
  resize: vertical;
}

.answer-input-wrap {
  display: grid;
  gap: 0.6rem;
}

.answer-input {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: clamp(1rem, 2vw, 1.2rem);
  font-weight: 700;
  background: rgba(4, 13, 19, 0.96);
  box-shadow: inset 0 0 0 1px rgba(34, 211, 238, 0.16);
}

.answer-input:focus {
  outline: 2px solid rgba(34, 211, 238, 0.42);
  outline-offset: 2px;
}

.status {
  min-height: 1.5rem;
  margin-bottom: 0.9rem;
  color: var(--muted);
}

.status.success { color: var(--good); }
.status.error { color: #ffc4cf; }

.difficulty-chip,
.category-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border-radius: 999px;
  padding: 0.55rem 0.85rem;
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted);
}

.category-chip input,
.difficulty-chip input {
  accent-color: #22d3ee;
}

.scramble-stage {
  display: grid;
  gap: 1rem;
  padding: clamp(1rem, 2.2vw, 1.5rem);
}

.stage-head {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
}

.stage-kicker {
  margin: 0;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.9rem;
}

.stage-title {
  margin: 0.35rem 0 0;
  font-size: clamp(1.4rem, 3vw, 2.4rem);
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border-radius: 999px;
  padding: 0.45rem 0.75rem;
  background: rgba(255,255,255,0.05);
  color: var(--muted);
}

.game-screen {
  display: grid;
  gap: 1rem;
  padding: 1rem;
  border-radius: 1.2rem;
  background:
    radial-gradient(circle at 50% 0%, rgba(34, 211, 238, 0.14), transparent 30%),
    linear-gradient(180deg, rgba(18, 42, 57, 0.96), rgba(8, 18, 25, 0.98));
}

.prompt-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
}

.word-category {
  color: var(--accent-2);
  font-size: clamp(1.2rem, 2.6vw, 2rem);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  text-align: center;
  width: 100%;
}

.timer {
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  font-weight: 800;
}

.timer.training {
  color: var(--muted);
}

.answer-slots,
.tile-bank {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  min-height: 5rem;
}

.tile-slot,
.tile {
  width: clamp(3rem, 8vw, 4.25rem);
  height: clamp(3rem, 8vw, 4.25rem);
  border-radius: 1rem;
  border: 1px dashed rgba(255,255,255,0.14);
  display: grid;
  place-items: center;
}

.tile-slot.filled {
  border-style: solid;
  background: rgba(255,255,255,0.04);
}

.tile {
  border-style: solid;
  border-color: rgba(34, 211, 238, 0.3);
  background: linear-gradient(180deg, rgba(35, 74, 98, 0.98), rgba(10, 23, 31, 0.96));
  color: var(--text);
  font-size: clamp(1.3rem, 3.5vw, 2rem);
  font-weight: 800;
  box-shadow: 0 14px 28px rgba(0,0,0,0.2);
}

.tile.dragging {
  opacity: 0.45;
}

.tile-slot.correct-flash,
.tile.correct-flash {
  animation: correct-glow 500ms ease-in-out;
}

@keyframes correct-glow {
  0% {
    border-color: rgba(74, 222, 128, 0.18);
    box-shadow: 0 0 0 rgba(74, 222, 128, 0);
    background: rgba(255,255,255,0.04);
  }
  45% {
    border-color: rgba(74, 222, 128, 0.95);
    box-shadow: 0 0 28px rgba(74, 222, 128, 0.5);
    background: rgba(29, 78, 49, 0.82);
  }
  100% {
    border-color: rgba(74, 222, 128, 0.7);
    box-shadow: 0 0 18px rgba(74, 222, 128, 0.2);
    background: rgba(24, 57, 39, 0.76);
  }
}

.entry-list {
  display: grid;
  gap: 0.75rem;
}

.entry-row,
.leaderboard-row {
  display: grid;
  gap: 0.65rem;
  padding: 0.85rem;
  border-radius: 1rem;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(9, 19, 27, 0.84);
}

.entry-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr) auto;
  gap: 0.75rem;
  align-items: center;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8.5rem, 1fr));
  gap: 0.75rem;
}

.stat-card {
  padding: 0.85rem 1rem;
  border-radius: 1rem;
  background: rgba(9, 19, 27, 0.86);
  border: 1px solid rgba(255,255,255,0.08);
}

.stat-card strong {
  display: block;
  margin-top: 0.3rem;
  font-size: 1.5rem;
}

.leaderboard-list {
  display: grid;
  gap: 0.6rem;
  margin-top: 0.75rem;
}

.leaderboard-row strong {
  font-size: 1.05rem;
}

.empty-state {
  padding: 1rem;
  border: 1px dashed rgba(166, 187, 199, 0.24);
  border-radius: 1rem;
  color: var(--muted);
}

@media (min-width: 980px) {
  .scramble-layout {
    grid-template-columns: minmax(20rem, 28rem) minmax(0, 1fr);
  }

  .scramble-live-layout {
    grid-template-columns: minmax(0, 1.35fr) minmax(18rem, 24rem);
  }
}

@media (max-width: 760px) {
  .entry-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .button,
  .mini-button {
    width: 100%;
    text-align: center;
  }
}