:root {
  --ink: #f8fbff;
  --muted: #9fb3c8;
  --line: rgba(255, 255, 255, 0.14);
  --panel: rgba(8, 18, 31, 0.88);
  --panel-soft: rgba(16, 32, 49, 0.78);
  --accent: #34d6b4;
  --accent-2: #ffcf5a;
  --danger: #ff6f91;
  --blue: #5ab7ff;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 22% 18%, rgba(52, 214, 180, 0.22), transparent 28rem),
    radial-gradient(circle at 82% 12%, rgba(255, 207, 90, 0.14), transparent 26rem),
    linear-gradient(145deg, #08111d 0%, #11192a 45%, #16141e 100%);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle, rgba(255,255,255,0.8) 0 1px, transparent 1px),
    radial-gradient(circle, rgba(255,255,255,0.34) 0 1px, transparent 1px);
  background-size: 80px 80px, 140px 140px;
  background-position: 0 0, 34px 56px;
  opacity: 0.35;
}

button,
input,
select {
  font: inherit;
}

button {
  border: 0;
  border-radius: 8px;
  color: #041018;
  background: var(--accent);
  padding: 0.8rem 1rem;
  font-weight: 800;
  cursor: pointer;
  transition: transform 120ms ease, opacity 120ms ease, background 120ms ease;
}

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

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
}

button.secondary {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid var(--line);
}

button.danger {
  color: #230711;
  background: var(--danger);
}

input,
select,
textarea {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.07);
  padding: 0.65rem 0.75rem;
}

textarea {
  min-height: 92px;
  resize: vertical;
}

select option {
  color: #07111d;
  background: #f8fbff;
}

input[type="range"] {
  accent-color: var(--accent);
  padding-left: 0;
  padding-right: 0;
}

output {
  color: var(--accent-2);
  font-size: 0.9rem;
  font-weight: 800;
}

label {
  display: grid;
  gap: 0.38rem;
  color: var(--muted);
  font-size: 0.9rem;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: clamp(2.4rem, 8vw, 5.4rem);
  line-height: 0.95;
  letter-spacing: 0;
}

h2 {
  font-size: 1.08rem;
}

.app {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0;
}

.panel,
.box {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 24px 90px rgba(0, 0, 0, 0.32);
}

.lobby {
  padding: clamp(18px, 4vw, 34px);
}

.brand {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  min-height: 180px;
}

.eyebrow {
  margin-bottom: 0.7rem;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.icon-button {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  padding: 0;
  background: var(--accent-2);
}

.grid.two {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.box {
  display: grid;
  gap: 14px;
  padding: 18px;
  background: var(--panel-soft);
  box-shadow: none;
}

.ship-picker {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.ship-option {
  min-height: 66px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  cursor: pointer;
}

.ship-option.selected {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 2px rgba(52, 214, 180, 0.26);
}

.mini-ship {
  position: relative;
  width: 52px;
  height: 34px;
  border-radius: 50% 56% 56% 50%;
  background: linear-gradient(135deg, rgba(255,255,255,0.32), var(--ship-color, var(--accent)) 48%, rgba(0,0,0,0.24));
  clip-path: polygon(0 50%, 24% 18%, 72% 0, 100% 50%, 72% 100%, 24% 82%);
  box-shadow: inset -11px 0 rgba(0, 0, 0, 0.22), 0 0 18px color-mix(in srgb, var(--ship-color, var(--accent)), transparent 55%);
}

.mini-ship::before,
.mini-ship::after {
  content: "";
  position: absolute;
}

.mini-ship::before {
  width: 12px;
  height: 8px;
  border-radius: 999px;
  background: rgba(154, 247, 255, 0.9);
  right: 16px;
  top: 11px;
}

.mini-ship::after {
  width: 18px;
  height: 12px;
  left: -8px;
  top: 11px;
  background: linear-gradient(90deg, rgba(255,122,58,0), #ffcf5a);
  clip-path: polygon(0 50%, 100% 0, 100% 100%);
}

.rooms {
  margin-top: 22px;
}

.practice {
  margin-top: 18px;
}

.digit-settings {
  display: grid;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: rgba(255, 255, 255, 0.045);
}

.advanced-options {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.035);
}

.advanced-options summary {
  cursor: pointer;
  padding: 0.75rem;
  color: var(--accent-2);
  font-weight: 900;
}

.advanced-options .digit-settings {
  border: 0;
  border-top: 1px solid var(--line);
  border-radius: 0;
}

.digit-settings h3 {
  margin: 0;
  font-size: 0.9rem;
  color: var(--ink);
}

.digit-row {
  display: grid;
  grid-template-columns: minmax(72px, 0.9fr) 1fr 1fr;
  gap: 8px;
  align-items: end;
}

.digit-row span {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 800;
}

.digit-row input {
  min-height: 34px;
  padding: 0.35rem 0.5rem;
}

.practice-row {
  display: grid;
  grid-template-columns: minmax(140px, 1fr) minmax(240px, 360px) auto;
  gap: 10px;
  align-items: center;
}

#practiceForm {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}

.section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  margin-bottom: 10px;
}

.section-title h2 {
  color: var(--ink);
}

.room-list {
  display: grid;
  gap: 10px;
}

.room-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.055);
  padding: 12px;
}

.room-card p {
  color: var(--muted);
  font-size: 0.92rem;
  margin-top: 4px;
}

.game {
  display: grid;
  grid-template-columns: 290px minmax(0, 1fr);
  gap: 16px;
  min-height: calc(100vh - 56px);
}

.hidden {
  display: none !important;
}

.side {
  padding: 16px;
  align-self: stretch;
}

.room-code {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 14px;
  margin-bottom: 14px;
  color: var(--muted);
}

.room-code strong {
  color: var(--accent-2);
  font-size: 1.7rem;
  letter-spacing: 0.08em;
}

.host-controls {
  display: grid;
  gap: 10px;
  margin-bottom: 14px;
}

.race-status {
  display: grid;
  gap: 4px;
  margin-bottom: 14px;
  color: var(--accent-2);
  font-size: 0.9rem;
  font-weight: 800;
}

.host-controls .inline {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.players {
  display: grid;
  gap: 8px;
}

.player-row {
  display: grid;
  gap: 7px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: rgba(255, 255, 255, 0.055);
}

.player-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.player-top span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.meter {
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
}

.meter i {
  display: block;
  height: 100%;
  width: var(--value, 0%);
  background: var(--accent);
}

.race-shell {
  position: relative;
  min-height: 680px;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #07111d;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 680px;
}

.question-dock {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 16px;
  display: grid;
  grid-template-columns: minmax(160px, 1fr) minmax(240px, 360px) minmax(90px, 150px);
  gap: 12px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: rgba(5, 13, 23, 0.9);
  backdrop-filter: blur(12px);
}

.powerups {
  position: absolute;
  left: 16px;
  top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.powerups button {
  min-width: 96px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid var(--line);
}

#questionLabel,
#feedback {
  color: var(--muted);
  font-size: 0.86rem;
}

#questionText {
  display: block;
  font-size: 1.8rem;
}

#answerForm {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}

#feedback {
  min-height: 22px;
}

.leaderboard {
  position: absolute;
  inset: 32px;
  display: grid;
  align-content: center;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(5, 13, 23, 0.93);
  padding: 24px;
}

.leaderboard h2 {
  font-size: 2rem;
  margin-bottom: 8px;
}

.leaderboard-row {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.06);
}

.leaderboard-row span {
  display: grid;
  gap: 3px;
}

.leaderboard-row small {
  color: var(--muted);
  font-size: 0.78rem;
}

@media (max-width: 900px) {
  .grid.two,
  .game,
  .question-dock,
  .practice-row,
  .digit-row {
    grid-template-columns: 1fr;
  }

  .game {
    min-height: auto;
  }

  .side {
    order: 2;
  }

  .race-shell {
    min-height: 560px;
  }

  canvas {
    min-height: 560px;
  }

  .question-dock {
    align-items: stretch;
  }
}

@media (max-width: 560px) {
  .app {
    width: min(100% - 20px, 1180px);
    padding: 10px 0;
  }

  .brand {
    min-height: 140px;
  }

  .ship-picker {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .room-card {
    grid-template-columns: 1fr;
  }

  #answerForm {
    grid-template-columns: 1fr;
  }
}