:root {
  color-scheme: dark;
  --bg-deep: #090916;
  --bg: #0f0f23;
  --panel: #17162d;
  --panel-strong: #1e1c35;
  --panel-hover: #272442;
  --glass: rgb(30 28 53 / 78%);
  --border: rgb(196 181 253 / 12%);
  --border-strong: rgb(196 181 253 / 25%);
  --purple: #7c3aed;
  --purple-bright: #a78bfa;
  --purple-soft: rgb(124 58 237 / 16%);
  --cyan: #22d3ee;
  --cyan-soft: rgb(34 211 238 / 12%);
  --rose: #f43f5e;
  --rose-soft: rgb(244 63 94 / 14%);
  --blue: #3b82f6;
  --green: #22c55e;
  --amber: #f59e0b;
  --text: #f8fafc;
  --text-2: #d7d5e9;
  --muted: #9895b1;
  --faint: #6f6b88;
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;
  --shadow-sm: 0 8px 22px rgb(0 0 0 / 20%);
  --shadow-lg: 0 24px 70px rgb(0 0 0 / 35%);
  --ease: cubic-bezier(.16, 1, .3, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  min-width: 320px;
  min-height: 100%;
  background: var(--bg-deep);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--text-2);
  background:
    linear-gradient(180deg, rgb(15 15 35 / 98%), rgb(9 9 22 / 100%)),
    var(--bg);
  font: 16px/1.5 "Segoe UI Variable", "Microsoft YaHei UI", "Microsoft YaHei", system-ui, sans-serif;
  text-rendering: optimizeLegibility;
}

button,
input,
select {
  font: inherit;
}

button,
select,
input[type="checkbox"] {
  cursor: pointer;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
a:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
}

button:disabled,
input:disabled,
select:disabled {
  cursor: not-allowed;
}

svg {
  display: block;
  width: 1.25rem;
  height: 1.25rem;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  border-radius: 8px;
  color: var(--text);
  background: var(--purple);
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.ambient {
  position: fixed;
  z-index: -1;
  border-radius: 50%;
  filter: blur(100px);
  opacity: .16;
  pointer-events: none;
}

.ambient-a {
  top: -14rem;
  left: -8rem;
  width: 38rem;
  height: 38rem;
  background: var(--purple);
}

.ambient-b {
  right: -10rem;
  bottom: -18rem;
  width: 42rem;
  height: 42rem;
  background: #0ea5e9;
  opacity: .08;
}

.app-shell {
  width: min(1540px, 100%);
  min-height: 100vh;
  margin-inline: auto;
}

.topbar {
  position: sticky;
  z-index: 40;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  padding: 12px clamp(18px, 3vw, 38px);
  border-bottom: 1px solid var(--border);
  background: rgb(9 9 22 / 82%);
  backdrop-filter: blur(18px) saturate(135%);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid rgb(167 139 250 / 45%);
  border-radius: 13px;
  color: white;
  background: linear-gradient(145deg, #8b5cf6, #5b21b6);
  box-shadow: 0 10px 28px rgb(124 58 237 / 36%), inset 0 1px rgb(255 255 255 / 20%);
}

.brand-mark svg {
  width: 25px;
  height: 25px;
}

.brand-copy {
  display: grid;
  line-height: 1.15;
}

.brand-copy strong {
  color: var(--text);
  font-size: .92rem;
  letter-spacing: .11em;
}

.brand-copy small {
  margin-top: 5px;
  color: var(--faint);
  font: 600 .66rem/1.2 ui-monospace, "Cascadia Code", Consolas, monospace;
  letter-spacing: .14em;
}

.topbar-meta {
  display: flex;
  gap: 10px;
}

.metric-chip {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  background: rgb(30 28 53 / 58%);
  font-size: .86rem;
  white-space: nowrap;
}

.metric-chip svg {
  width: 17px;
  height: 17px;
  color: var(--purple-bright);
}

.page-content {
  display: grid;
  gap: 16px;
  padding: 20px clamp(14px, 2.4vw, 34px) 36px;
}

.lobby-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(370px, .75fr);
  gap: clamp(22px, 4vw, 64px);
  min-height: 274px;
  padding: clamp(26px, 4vw, 46px);
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(120deg, rgb(124 58 237 / 13%), transparent 45%),
    linear-gradient(160deg, rgb(30 28 53 / 95%), rgb(15 15 35 / 92%));
  box-shadow: var(--shadow-lg);
}

.lobby-hero::after {
  position: absolute;
  top: -60%;
  right: 14%;
  width: 26rem;
  height: 26rem;
  border: 1px solid rgb(167 139 250 / 8%);
  border-radius: 50%;
  box-shadow: 0 0 0 54px rgb(167 139 250 / 3%), 0 0 0 110px rgb(167 139 250 / 2%);
  content: "";
  pointer-events: none;
}

.hero-copy {
  position: relative;
  z-index: 1;
  align-self: center;
  min-width: 0;
  max-width: 760px;
}

.eyebrow,
.section-kicker,
.ribbon-label {
  color: var(--purple-bright);
  font: 700 .7rem/1.3 ui-monospace, "Cascadia Code", Consolas, monospace;
  letter-spacing: .14em;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 5px rgb(34 197 94 / 10%), 0 0 18px rgb(34 197 94 / 45%);
}

.hero-copy h1 {
  max-width: none;
  margin: 14px 0 10px;
  color: var(--text);
  font-size: clamp(2rem, 3.4vw, 2.85rem);
  line-height: 1.08;
  letter-spacing: -.035em;
  overflow-wrap: anywhere;
}

.hero-copy p {
  max-width: 66ch;
  margin: 0;
  color: var(--muted);
  font-size: clamp(.96rem, 1.2vw, 1.08rem);
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.feature-tags span {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: #c4b5fd;
  background: rgb(124 58 237 / 8%);
  font-size: .8rem;
}

.room-console {
  position: relative;
  z-index: 2;
  align-self: stretch;
  min-width: 0;
  padding: 20px;
  border: 1px solid rgb(196 181 253 / 18%);
  border-radius: var(--radius);
  background: rgb(9 9 22 / 52%);
  box-shadow: inset 0 1px rgb(255 255 255 / 4%);
  backdrop-filter: blur(14px);
}

.room-console-head,
.deck-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.room-console-head > div,
.deck-title > div {
  display: grid;
  min-width: 0;
}

.room-console-head strong,
.deck-title h2 {
  margin: 0;
  color: var(--text);
}

.room-console-head span:last-child {
  margin-top: 2px;
  color: var(--faint);
  font: 600 .63rem/1.3 ui-monospace, "Cascadia Code", Consolas, monospace;
  letter-spacing: .1em;
}

.icon-tile {
  display: grid;
  flex: 0 0 42px;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgb(167 139 250 / 25%);
  border-radius: 12px;
  color: var(--purple-bright);
  background: var(--purple-soft);
}

.icon-tile.cyan {
  border-color: rgb(34 211 238 / 22%);
  color: var(--cyan);
  background: var(--cyan-soft);
}

.room-presence {
  display: flex;
  align-items: center;
  min-height: 50px;
  gap: 10px;
  margin: 18px 0 12px;
  padding: 11px 13px;
  border: 1px solid var(--border);
  border-radius: 11px;
  color: var(--muted);
  background: rgb(30 28 53 / 54%);
  font-size: .86rem;
}

.status-dot {
  flex: 0 0 9px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--faint);
  box-shadow: 0 0 0 5px rgb(111 107 136 / 9%);
}

.status-dot.online {
  background: var(--green);
  box-shadow: 0 0 0 5px rgb(34 197 94 / 10%), 0 0 14px rgb(34 197 94 / 35%);
}

.status-dot.viewer {
  background: var(--cyan);
  box-shadow: 0 0 0 5px rgb(34 211 238 / 10%), 0 0 14px rgb(34 211 238 / 30%);
}

.room-code {
  display: block;
  margin-bottom: 12px;
  padding: 10px 13px;
  border: 1px dashed rgb(167 139 250 / 36%);
  border-radius: 10px;
  color: var(--text);
  background: rgb(124 58 237 / 9%);
  font: 700 .9rem/1.4 ui-monospace, "Cascadia Code", Consolas, monospace;
  letter-spacing: .08em;
  text-align: center;
}

.room-code[hidden] {
  display: none;
}

.room-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.stat-ribbon {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 20px;
  padding: 16px clamp(20px, 3vw, 34px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--glass);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(14px);
}

.ribbon-item {
  display: grid;
  gap: 2px;
}

.ribbon-item strong {
  color: var(--text);
  font-size: .98rem;
}

.ribbon-item small {
  color: var(--faint);
  font-size: .78rem;
}

.ribbon-divider {
  width: 1px;
  height: 38px;
  background: var(--border);
}

.console-grid {
  display: grid;
  grid-template-columns: minmax(650px, 1.55fr) minmax(390px, .9fr);
  align-items: start;
  gap: 16px;
}

.control-deck,
.match-deck {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: rgb(23 22 45 / 90%);
  box-shadow: var(--shadow-lg);
}

.match-deck {
  position: sticky;
  top: 92px;
}

.deck-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 24px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgb(255 255 255 / 2%), transparent);
}

.deck-title h2 {
  font-size: 1.15rem;
  line-height: 1.3;
}

.deck-title p {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: .84rem;
}

body.viewer-mode .control-deck {
  opacity: .82;
}

body.viewer-mode .control-deck::before {
  display: block;
  margin: 18px 24px 0;
  padding: 11px 13px;
  border: 1px solid rgb(34 211 238 / 22%);
  border-radius: 10px;
  color: #a5f3fc;
  background: var(--cyan-soft);
  content: "观看模式 · 房间内容由创建者控制，此页面仅实时显示结果";
  font-size: .84rem;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}