:root {
  color-scheme: dark;
  --bg: #160a13;
  --card: #281520;
  --card-soft: #20101a;
  --border: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(218, 255, 61, 0.42);
  --text: #f8f5f7;
  --text-sec: #c9bac5;
  --text-light: #95818f;
  --input-bg: #170b13;
  --primary: #d9ff3f;
  --primary-hover: #c5eb2e;
  --primary-soft: rgba(217, 255, 63, 0.11);
  --success: #51d795;
  --warning: #ffad49;
  --danger: #ff6578;
  --accent: #a281ff;
  --correct: #38bd78;
  --close: #d59632;
  --wrong: #675563;
  --shadow: 0 18px 42px rgba(0, 0, 0, 0.28);
  --shadow-lg: 0 28px 80px rgba(0, 0, 0, 0.48);
  --radius: 4px;
  --radius-sm: 3px;
}

.language-select { --language-accent: var(--primary); }

html { background: var(--bg); }

body {
  position: relative;
  background:
    radial-gradient(circle at 82% -12%, rgba(118, 47, 91, 0.3), transparent 34rem),
    radial-gradient(circle at 4% 88%, rgba(83, 31, 65, 0.24), transparent 28rem),
    repeating-linear-gradient(118deg, transparent 0 92px, rgba(255, 255, 255, 0.018) 92px 93px),
    var(--bg);
}

body::before {
  position: fixed;
  inset: -25vmax;
  z-index: 0;
  content: '';
  pointer-events: none;
  background:
    radial-gradient(circle at 28% 34%, rgba(217, 255, 63, 0.055), transparent 18%),
    radial-gradient(circle at 72% 62%, rgba(162, 129, 255, 0.09), transparent 22%);
  filter: blur(18px);
  animation: ambient-drift 18s ease-in-out infinite alternate;
  will-change: transform;
}

#root {
  position: relative;
  z-index: 1;
  isolation: isolate;
}

@keyframes ambient-drift {
  0% { transform: translate3d(-2%, -1%, 0) rotate(-2deg) scale(1); }
  100% { transform: translate3d(3%, 2%, 0) rotate(3deg) scale(1.08); }
}

@keyframes surface-enter {
  from { opacity: 0; transform: translate3d(0, 16px, 0); }
  to { opacity: 1; transform: translate3d(0, 0, 0); }
}

@keyframes neon-pulse {
  0%, 100% { opacity: 0.65; filter: brightness(0.9); }
  50% { opacity: 1; filter: brightness(1.18); }
}

@keyframes urgent-pulse {
  0%, 100% { opacity: 1; text-shadow: 0 0 0 rgba(255, 101, 120, 0); }
  50% { opacity: 0.72; text-shadow: 0 0 18px rgba(255, 101, 120, 0.7); }
}

* {
  scrollbar-color: rgba(217, 255, 63, 0.42) rgba(255, 255, 255, 0.04);
  scrollbar-width: thin;
}

*::-webkit-scrollbar { width: 8px; height: 8px; }
*::-webkit-scrollbar-track { background: rgba(255, 255, 255, 0.04); }
*::-webkit-scrollbar-thumb { background: rgba(217, 255, 63, 0.38); border-radius: 0; }

.page {
  position: relative;
  background:
    linear-gradient(180deg, rgba(44, 19, 36, 0.2), transparent 42%),
    transparent;
}

.page-scroll {
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px) 0 0 / 72px 72px,
    linear-gradient(rgba(255, 255, 255, 0.014) 1px, transparent 1px) 0 0 / 72px 72px;
}

.page-scroll > * {
  animation: surface-enter 0.52s cubic-bezier(0.2, 0.72, 0.25, 1) both;
}
.page-scroll > :nth-child(2) { animation-delay: 55ms; }
.page-scroll > :nth-child(3) { animation-delay: 100ms; }
.page-scroll > :nth-child(4) { animation-delay: 145ms; }

.header-bar {
  position: relative;
  background: rgba(22, 10, 19, 0.92);
  border-bottom-color: rgba(255, 255, 255, 0.11);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.24);
}

.header-bar::after {
  position: absolute;
  right: var(--page-inline);
  bottom: -1px;
  width: clamp(48px, 9vw, 120px);
  height: 2px;
  content: '';
  background: var(--primary);
  box-shadow: 0 0 20px rgba(217, 255, 63, 0.55);
  animation: neon-pulse 2.8s ease-in-out infinite;
}

.header-bar .title {
  color: #fff;
  font-family: Bahnschrift, 'Arial Narrow', 'Microsoft YaHei', sans-serif;
  font-style: italic;
  font-weight: 800;
  letter-spacing: 0.045em;
  text-transform: uppercase;
}

.header-bar .title::before {
  content: '//';
  color: var(--primary);
  font-style: normal;
  letter-spacing: -0.18em;
  margin-right: 4px;
}

.status-bar {
  background: rgba(35, 16, 29, 0.94);
  border-bottom-color: rgba(255, 255, 255, 0.09);
  color: var(--text-sec);
}

.status-bar > svg { color: var(--primary); }

.auth-pending {
  background: linear-gradient(90deg, #21101b 25%, #3a2434 50%, #21101b 75%);
  background-size: 200% 100%;
}

.btn {
  position: relative;
  overflow: hidden;
  border-color: transparent;
  border-radius: 2px;
  background: var(--primary);
  color: #170b13;
  font-family: Bahnschrift, 'Arial Narrow', 'Microsoft YaHei', sans-serif;
  font-weight: 750;
  letter-spacing: 0.035em;
  text-transform: uppercase;
  box-shadow: 0 8px 20px rgba(217, 255, 63, 0.15);
  clip-path: polygon(0 0, calc(100% - 9px) 0, 100% 9px, 100% 100%, 9px 100%, 0 calc(100% - 9px));
}

.btn::after {
  position: absolute;
  inset: -40% auto -40% -65%;
  width: 42%;
  content: '';
  pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.34), transparent);
  transform: skewX(-18deg);
  transition: left 0.5s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.btn:hover:not(:disabled) {
  background: var(--primary-hover);
  color: #11080f;
  box-shadow: 0 12px 28px rgba(217, 255, 63, 0.24);
}

.btn:hover:not(:disabled)::after,
.btn:focus-visible::after { left: 125%; }

.btn-ghost {
  border-color: rgba(255, 255, 255, 0.17);
  background: rgba(255, 255, 255, 0.045);
  color: var(--text);
  box-shadow: none;
}

.btn-ghost:hover:not(:disabled) {
  border-color: var(--primary);
  background: var(--primary-soft);
  color: var(--primary);
}

.btn-success,
.btn-green { background: var(--success); color: #102018; }
.btn-success:hover:not(:disabled),
.btn-green:hover:not(:disabled) { background: #6be5a8; color: #102018; }
.btn-warning { background: var(--warning); color: #241306; }
.btn-warning:hover:not(:disabled) { background: #ffc071; color: #241306; }
.btn-danger,
.btn-red { background: var(--danger); color: #280b12; }
.btn-danger:hover:not(:disabled),
.btn-red:hover:not(:disabled) { background: #ff8190; color: #280b12; }
.btn-accent { background: var(--accent); color: #160c23; }
.btn-accent:hover:not(:disabled) { background: #b49cff; color: #160c23; }
.btn-bilibili { background: #36bceb; color: #071b22; }
.btn-bilibili:hover:not(:disabled) { background: #6fd2f4; color: #071b22; }

.btn:focus-visible,
.input:focus-visible,
.opt-btn:focus-visible,
.room-code-toggle:focus-visible,
.menu-card:focus-visible,
.confirm-close:focus-visible {
  outline-color: rgba(217, 255, 63, 0.65);
}

.card {
  position: relative;
  border-color: rgba(255, 255, 255, 0.11);
  border-radius: 4px;
  background:
    linear-gradient(145deg, rgba(52, 27, 43, 0.98), rgba(35, 16, 29, 0.98));
  box-shadow: var(--shadow);
  transition: border-color 0.24s ease, box-shadow 0.24s ease, transform 0.24s ease;
}

.card::before {
  position: absolute;
  top: -1px;
  left: 18px;
  width: 56px;
  height: 3px;
  content: '';
  background: var(--primary);
  box-shadow: 0 0 18px rgba(217, 255, 63, 0.34);
  animation: neon-pulse 3.4s ease-in-out infinite;
}

.card h3 {
  color: #fff;
  font-family: Bahnschrift, 'Arial Narrow', 'Microsoft YaHei', sans-serif;
  font-weight: 750;
  letter-spacing: 0.025em;
}

.input,
select.input,
textarea.input {
  border-color: rgba(255, 255, 255, 0.14);
  border-radius: 2px;
  background: var(--input-bg);
  color: var(--text);
  caret-color: var(--primary);
}

.input::placeholder,
textarea.input::placeholder { color: #776671; }

.input:hover:not(:disabled) { border-color: rgba(255, 255, 255, 0.3); }

.input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(217, 255, 63, 0.12);
}

select.input { color-scheme: dark; }
.muted { color: var(--text-light); }
.error { color: var(--danger); }

.game-table-wrap {
  border-color: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  background: #190c15;
}

.stats-summary-table tr:hover { background: rgba(255, 255, 255, 0.025); }
.stats-summary-table td:last-child { color: var(--primary); }

.game-table th { background: #1d0e18; color: var(--primary); }
.game-table td {
  border-color: rgba(255, 255, 255, 0.11);
  border-radius: 2px;
  background: #2a1723;
  color: #fff;
  box-shadow: none;
}
.game-table td.correct { color: #07160e; }
.game-table td.close { color: #211406; }
.game-table tbody tr {
  animation: surface-enter 0.38s cubic-bezier(0.2, 0.72, 0.25, 1) both;
}
.game-table tbody tr:nth-child(2) { animation-delay: 45ms; }
.game-table tbody tr:nth-child(3) { animation-delay: 90ms; }
.game-table tbody tr:nth-child(4) { animation-delay: 135ms; }
.game-table td.correct,
.game-table td.close { transition: filter 0.2s ease, transform 0.2s ease; }

.input-dock {
  border-top-color: rgba(255, 255, 255, 0.12);
  background: rgba(22, 10, 19, 0.94);
  box-shadow: 0 -14px 34px rgba(0, 0, 0, 0.26);
}

.autocomplete-list {
  border-color: rgba(255, 255, 255, 0.14);
  border-radius: 2px;
  background: #24121e;
  box-shadow: 0 -16px 38px rgba(0, 0, 0, 0.42);
}

.autocomplete-list li { border-radius: 1px; }
.autocomplete-list li:hover,
.autocomplete-list li.active { background: var(--primary); color: #160b13; }

.overlay,
.confirm-backdrop,
.replay-backdrop,
.admin-player-backdrop {
  background: rgba(9, 4, 8, 0.78);
  backdrop-filter: blur(8px);
  animation: backdrop-enter 0.22s ease-out both;
}

.overlay-card,
.confirm-dialog,
.replay-dialog,
.admin-player-dialog {
  border-color: rgba(255, 255, 255, 0.13);
  border-radius: 4px;
  background: linear-gradient(145deg, #341b2b, #21101b);
  color: var(--text);
  box-shadow: var(--shadow-lg);
  animation: dialog-enter 0.32s cubic-bezier(0.18, 0.78, 0.24, 1) both;
}

@keyframes backdrop-enter {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes dialog-enter {
  from { opacity: 0; transform: translate3d(0, 18px, 0) scale(0.97); }
  to { opacity: 1; transform: translate3d(0, 0, 0) scale(1); }
}

.overlay-card h2,
.confirm-heading h2,
.replay-heading h2,
.admin-player-dialog-heading h2 {
  color: #fff;
  font-family: Bahnschrift, 'Arial Narrow', 'Microsoft YaHei', sans-serif;
  font-style: italic;
  font-weight: 800;
  letter-spacing: 0.03em;
}

.confirm-close { color: var(--text-light); }
.confirm-close:hover { background: rgba(255, 255, 255, 0.08); color: #fff; }
.replay-answer,
.admin-player-flags { border-color: rgba(255, 255, 255, 0.11); background: #1b0d17; }
.player-info-table td { border-bottom-color: rgba(255, 255, 255, 0.09); }
.player-info-table td.label { color: var(--text-light); }