/*
 * 联机层样式：房间浏览器（大厅）与候场页。
 *
 * 这两屏是**同一件事的两半步**：大厅回答"去哪跑"，候场回答"跟谁跑、骑什么、
 * 什么时候出发"。所以它们共用一套卡片与面板的语言（--panel 底 + 1px 亮边 +
 * 圆角 14），区别只在密度：大厅要一眼扫过很多房间，候场可以慢下来细看。
 */

body.rooms-open { overflow: auto; }

/* ------------------------------------------------------ 一、房间浏览器 */
#rooms {
  position: relative; min-height: 100dvh; padding-bottom: 48px;
  background:
    radial-gradient(ellipse at 8% 0%, #1d2b3d88 0, transparent 55%),
    radial-gradient(ellipse at 92% 6%, #3a241744 0, transparent 52%),
    var(--bg);
}
#rooms .rooms-bg {
  position: absolute; inset: 0; pointer-events: none; opacity: .45;
  background-image:
    linear-gradient(#ffffff08 1px, transparent 1px),
    linear-gradient(90deg, #ffffff08 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 0%, #000 0, transparent 76%);
}

.rooms-head {
  position: relative; z-index: 2;
  display: flex; align-items: center; justify-content: space-between;
  gap: 18px; flex-wrap: wrap;
  padding: 18px 4%; border-bottom: 1px solid var(--line);
  background: #0b101acc; backdrop-filter: blur(16px);
}
.rooms-id { display: flex; align-items: center; gap: 9px; flex-wrap: wrap; }
.nick-field {
  display: flex; align-items: center; gap: 8px; font-size: 10px; color: var(--muted);
  padding: 5px 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel);
}
.nick-field input {
  width: 122px; border: 0; outline: none; background: transparent;
  color: var(--text); font-size: 12px; font-weight: 700;
}
.conn-pill {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 13px; border: 1px solid var(--line); border-radius: 999px;
  background: var(--panel); font-size: 10px; color: var(--muted);
}
.conn-pill i { width: 7px; height: 7px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 8px var(--amber); }
.conn-pill.on i { background: var(--ok); box-shadow: 0 0 10px var(--ok); }
.conn-pill.off i { background: var(--danger); box-shadow: 0 0 10px var(--danger); }

.rooms-layout {
  position: relative; z-index: 2; max-width: 1540px; margin: 0 auto;
  display: grid; grid-template-columns: minmax(0, 1fr) 322px; gap: 22px;
  padding: 26px 4% 0;
}
.rooms-main { min-width: 0; }
.rooms-bar { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 18px; }
.rooms-bar h2 { margin: 7px 0 0; font-size: 26px; line-height: 1.2; }
.eyebrow { font-size: 10px; font-weight: 700; letter-spacing: 2.2px; color: var(--muted); }
.rooms-bar-actions { display: flex; align-items: center; gap: 9px; margin-left: auto; }

.create-panel {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(168px, 1fr));
  gap: 13px; padding: 17px; margin-bottom: 17px;
  border: 1px solid #ffb03a44; border-radius: 14px; background: #15203059;
}
.create-panel label { display: flex; flex-direction: column; gap: 6px; font-size: 10px; color: var(--muted); }
.create-panel input,
.create-panel select {
  padding: 10px 11px; border: 1px solid var(--line); border-radius: 9px;
  background: #0a1220; color: var(--text); font-size: 13px; outline: none;
}
.create-panel input:focus,
.create-panel select:focus { border-color: #ffb03a88; }
.create-actions { display: flex; align-items: flex-end; gap: 12px; }
.create-hint { grid-column: 1 / -1; margin: 0; font-size: 10px; line-height: 1.7; color: var(--muted); }

.room-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(272px, 1fr)); gap: 14px; min-height: 130px; }
.rooms-empty {
  grid-column: 1 / -1; padding: 40px 18px; text-align: center;
  border: 1px dashed var(--line); border-radius: 14px;
  font-size: 12px; color: var(--muted);
}
.room-card {
  display: flex; flex-direction: column; gap: 11px; padding: 16px;
  border: 1px solid var(--line); border-radius: 14px; text-align: left;
  background: linear-gradient(160deg, #182434, #101927);
  box-shadow: 0 12px 28px #00000038;
  transition: transform .16s, border-color .16s;
}
.room-card:hover { transform: translateY(-2px); border-color: #ffb03a55; }
.room-card header { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
.room-card h3 { margin: 0; font-size: 15px; }
.room-card .room-host { margin-top: 5px; font-size: 9px; color: var(--muted); }
.room-card .room-stats { display: flex; gap: 10px; flex-wrap: wrap; font-size: 10px; color: var(--muted); }
.room-card .room-stats b { color: var(--text); font-size: 12px; }
.room-card .room-flags { display: flex; gap: 8px; flex-wrap: wrap; font-size: 9px; color: var(--muted); }
.room-card .room-flags b { color: var(--text); }
.room-card .room-flags .flag-closed { color: var(--amber); }
.room-card .room-fill { height: 4px; border-radius: 3px; background: #ffffff12; overflow: hidden; }
.room-card .room-fill i { display: block; height: 100%; background: linear-gradient(90deg, var(--amber), var(--cyan)); }
.room-card .room-join { font-size: 10px; font-weight: 800; letter-spacing: 1px; color: var(--amber); }

.badge {
  display: inline-flex; align-items: center; padding: 3px 9px;
  border: 1px solid var(--line); border-radius: 999px; background: #ffffff0d;
  font-size: 9px; font-weight: 800; letter-spacing: .8px; color: var(--muted);
}
.badge.live { background: var(--ok); border-color: transparent; color: #0d1c1a; }
.badge.over { background: var(--danger); border-color: transparent; color: #3a1420; }

.rooms-note { margin: 16px 0 0; font-size: 11px; color: var(--muted); }
.rooms-error { color: var(--danger); font-weight: 700; }
.rooms-help { margin-top: 14px; }

.rooms-side { display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.showcase-box {
  position: relative; height: 232px; overflow: hidden;
  border: 1px solid var(--line); border-radius: 16px; background: #0a1018;
}
.showcase-box canvas { display: block; width: 100%; height: 100%; }
.showcase-caption {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 10px 12px;
  background: linear-gradient(transparent, #060a11e0 62%);
  font-size: 9px; letter-spacing: .6px; color: var(--muted);
}
.side-panel { padding: 14px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); }
.side-panel-head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 8px;
  margin-bottom: 11px; font-size: 12px; font-weight: 700;
}
.side-panel-head span { font-size: 8px; letter-spacing: 1.4px; color: var(--muted); }
.side-rows { display: flex; flex-direction: column; gap: 7px; }
.side-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; font-size: 11px; }
.side-row i { font-style: normal; font-size: 10px; color: var(--muted); }

/* ------------------------------------------------------------ 二、候场 */
#lobby { min-height: 100dvh; padding-bottom: 30px; background: var(--bg2); }
.room-banner {
  position: sticky; top: 0; z-index: 16;
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 10px 4%; border-bottom: 1px solid var(--line);
  background: #0b1220d9; backdrop-filter: blur(14px);
}
.room-banner strong { font-size: 15px; }
.room-banner .room-code { font-size: 11px; letter-spacing: 2px; color: var(--amber); }
.room-banner .room-meta { flex: 1; min-width: 180px; font-size: 10px; color: var(--muted); }
.phase-badge {
  padding: 3px 10px; border-radius: 999px; background: #ffffff12;
  font-size: 9px; font-weight: 800; letter-spacing: 1px; color: var(--muted);
}
.phase-badge.live { background: var(--ok); color: #0d1c1a; }
.phase-badge.over { background: var(--danger); color: #3a1420; }

.lobby-body {
  display: grid; grid-template-columns: minmax(0, 1fr) 372px; gap: 20px;
  max-width: 1420px; margin: 0 auto; padding: 22px 4% 0; align-items: start;
}
.lobby-stage { position: relative; min-height: 460px; border: 1px solid var(--line); border-radius: 18px; overflow: hidden; background: #080d15; }
.lobby-stage canvas { display: block; width: 100%; height: 460px; }
.bike-strip {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 16px 18px 15px;
  background: linear-gradient(transparent, #05081075 30%, #050810f2 72%);
}
.bike-head { display: flex; align-items: baseline; gap: 11px; }
.bike-head strong { font-size: 24px; font-style: italic; letter-spacing: -.5px; }
.bike-head span { font-size: 10px; letter-spacing: 2px; color: var(--muted); }
.bike-note { margin: 6px 0 12px; font-size: 11px; color: #b9c8d8; }
.bike-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.bike-stats > div { display: flex; align-items: center; gap: 7px; font-size: 9px; color: var(--muted); }
.stat-track { flex: 1; height: 5px; border-radius: 4px; background: #ffffff14; overflow: hidden; }
.stat-track b { display: block; height: 100%; width: 40%; border-radius: 4px; background: linear-gradient(90deg, var(--amber), var(--cyan)); transition: width .28s; }

.lobby-side { display: flex; flex-direction: column; gap: 14px; }
.mode-cards { display: flex; flex-direction: column; gap: 9px; margin-bottom: 16px; }
.mode-card {
  display: flex; flex-direction: column; gap: 5px; padding: 12px 14px;
  border: 1px solid var(--line); border-radius: 11px; background: #ffffff05; text-align: left;
  transition: border-color .16s, background .16s;
}
.mode-card strong { font-size: 14px; }
.mode-card strong i { margin-left: 8px; font-size: 8px; font-style: normal; letter-spacing: 1.6px; color: var(--muted); }
.mode-card small { font-size: 10px; color: var(--muted); }
.mode-card.selected { border-color: #ffb03a88; background: linear-gradient(110deg, #ffb03a1a, #ffb03a05); }
.mode-card.selected strong i { color: var(--amber); }
.mode-card:disabled { opacity: .62; }
.difficulty-select { display: flex; gap: 4px; padding: 3px; border: 1px solid var(--line); border-radius: 10px; background: #0a1220; }
.difficulty-select button { flex: 1; padding: 8px 0; border-radius: 7px; font-size: 11px; color: var(--muted); }
.difficulty-select button.selected { background: #2b3a4c; color: var(--text); font-weight: 800; }
.difficulty-select button:disabled { opacity: .55; }

.bike-picker { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.bike-picker button {
  display: flex; flex-direction: column; gap: 4px; padding: 11px 13px;
  border: 1px solid var(--line); border-radius: 11px; background: #ffffff05; text-align: left;
}
.bike-picker button strong { font-size: 13px; }
.bike-picker button small { font-size: 10px; color: var(--muted); }
.bike-picker button.selected { border-color: #5ce1ff88; background: linear-gradient(110deg, #5ce1ff1a, #5ce1ff05); }
.bike-picker button:disabled { opacity: .6; }
.palette-row { display: flex; gap: 8px; flex-wrap: wrap; }
.palette-row button {
  width: 26px; height: 26px; border-radius: 8px;
  border: 2px solid transparent; box-shadow: inset 0 0 0 1px #ffffff20;
}
.palette-row button.selected { border-color: #fff; }

.roster-panel {
  width: min(1180px, 94%); margin: 18px auto 0; padding: 14px 18px;
  border: 1px solid var(--line); border-radius: 16px; background: #101a28f2;
  box-shadow: 0 12px 34px #00000055;
}
.roster-top { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 10px; font-size: 12px; font-weight: 700; }
.roster-top b { font-size: 13px; color: var(--amber); }
.roster-rows { display: flex; gap: 9px; flex-wrap: wrap; min-height: 42px; }
.roster-chip {
  display: flex; align-items: center; gap: 8px; padding: 6px 11px 6px 7px;
  border: 1px solid var(--line); border-radius: 11px; background: #ffffff0a; font-size: 11px;
}
.roster-chip canvas { width: 32px; height: 32px; border-radius: 8px; background: #0a1420; }
.roster-chip small { display: block; margin-top: 2px; font-size: 8px; letter-spacing: .5px; color: var(--muted); }
.roster-chip.me { border-color: #ffb03a99; }
.roster-chip.waiting small { color: var(--amber); }
.roster-chip.bot { opacity: .72; border-style: dashed; }
.roster-chip .host-crown { font-size: 11px; color: var(--amber); }
.roster-chip .kick-button {
  padding: 3px 7px; border: 1px solid #ff8da955; border-radius: 7px;
  color: var(--danger); font-size: 9px;
}
.roster-chip .kick-button:hover { background: #ff8da922; }

.roster-controls { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-top: 12px; }
.bot-stepper { display: flex; align-items: center; gap: 9px; font-size: 10px; color: var(--muted); }
.bot-stepper button {
  width: 28px; height: 28px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--panel2); font-size: 15px; line-height: 1;
}
.bot-stepper button:disabled { opacity: .35; }
.bot-stepper span { min-width: 22px; text-align: center; font-size: 15px; font-weight: 800; color: var(--text); }
.switch-field { display: flex; align-items: center; gap: 7px; font-size: 10px; color: var(--muted); cursor: pointer; }
.switch-field input { width: 15px; height: 15px; accent-color: var(--amber); }
.switch-field.guest { opacity: .45; }
.ready-button {
  margin-left: auto; padding: 10px 18px; border-radius: 10px;
  border: 1px solid #ffb03a88; background: #ffb03a1f; font-size: 12px; font-weight: 800;
}
.ready-button.on { background: var(--amber); border-color: transparent; color: #201203; }
.ready-button:disabled { opacity: .45; background: var(--panel2); border-color: var(--line); color: var(--muted); }
.start-button {
  display: flex; align-items: center; justify-content: center;
  min-width: 168px; height: 44px; padding: 0 22px; border-radius: 11px;
  background: linear-gradient(115deg, var(--amber), var(--amber2));
  color: #201203; font-size: 15px; font-weight: 900;
  box-shadow: 0 4px 0 #a3560f;
}
.start-block { display: flex; flex-direction: column; align-items: flex-end; gap: 4px; }
.start-mode { font-size: 9px; letter-spacing: 1.2px; color: var(--muted); }
.start-button.hold,
.start-button:disabled { filter: saturate(.35) brightness(.78); box-shadow: none; }
.roster-note { margin: 11px 0 0; font-size: 11px; color: var(--muted); }
.roster-note.warn { color: var(--amber); }
.team-note { margin: 5px 0 0; font-size: 10px; color: var(--muted); }

@media (max-width: 1060px) {
  .rooms-layout { grid-template-columns: minmax(0, 1fr); }
  .rooms-side { flex-direction: row; flex-wrap: wrap; }
  .rooms-side > * { flex: 1 1 260px; }
  .lobby-body { grid-template-columns: minmax(0, 1fr); }
  .lobby-stage, .lobby-stage canvas { min-height: 340px; height: 340px; }
}

@media (max-width: 680px) {
  .rooms-head { position: static; flex-direction: column; align-items: flex-start; }
  .rooms-bar-actions { margin-left: 0; width: 100%; }
  .rooms-bar-actions > * { flex: 1; }
  .rooms-bar h2 { font-size: 20px; }
  .room-banner .room-meta { display: none; }
  .roster-panel { width: 96%; padding: 12px; }
  .ready-button { margin-left: 0; width: 100%; }
  .start-block { width: 100%; align-items: stretch; }
  .start-button { width: 100%; }
  .bike-stats { grid-template-columns: repeat(2, 1fr); }
}