/* ============================================================
   歌手大赛 · 巅峰对决 —— 共享主题样式
   风格参考《中国说唱巅峰对决》舞台视觉：深黑背景、金色霓虹、
   红蓝对阵、斜切面板、强光扫射
   ============================================================ */
:root {
  --bg: #06070c;
  --bg-2: #0a0c14;
  --panel: #0e111c;
  --panel-2: #141827;
  --line: rgba(255, 255, 255, .08);
  --line-2: rgba(255, 255, 255, .18);
  --gold: #f6c453;
  --gold-2: #ff9f1c;
  --gold-deep: #b97a1e;
  --text: #f2f4fa;
  --dim: #9aa0b4;
  --dim-2: #62687d;
  --red: #ff3b30;
  --blue: #2f7bff;
  --ok: #34d399;
  --warn: #f59e0b;
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
  --font-num: "Impact", "Arial Black", "Bahnschrift", "DIN Alternate", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  width: 100%; height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-cn);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

::selection { background: rgba(246, 196, 83, .35); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 28px;
  border: 1px solid var(--line-2);
  border-radius: 10px;
  background: var(--panel-2);
  color: var(--text);
  font-family: var(--font-cn);
  font-size: 15px; font-weight: 700; letter-spacing: 2px;
  cursor: pointer;
  user-select: none;
  transition: all .18s ease;
}
.btn:hover:not(:disabled) { border-color: rgba(246, 196, 83, .6); color: var(--gold); transform: translateY(-1px); }
.btn:active:not(:disabled) { transform: translateY(0); }
.btn:disabled { opacity: .4; cursor: not-allowed; }

.btn-gold {
  background: linear-gradient(135deg, #ffd875, var(--gold-2) 55%, #e08a00);
  color: #241500;
  border: none;
  box-shadow: 0 6px 24px rgba(246, 196, 83, .35), inset 0 1px 0 rgba(255, 255, 255, .5);
  text-shadow: 0 1px 0 rgba(255, 255, 255, .35);
}
.btn-gold:hover:not(:disabled) {
  color: #241500;
  box-shadow: 0 8px 32px rgba(246, 196, 83, .55), inset 0 1px 0 rgba(255, 255, 255, .5);
  filter: brightness(1.06);
}
.btn-red {
  background: linear-gradient(135deg, #ff6a5f, #e11d0f);
  color: #fff; border: none;
  box-shadow: 0 6px 22px rgba(255, 59, 48, .35);
}
.btn-red:hover:not(:disabled) { box-shadow: 0 8px 30px rgba(255, 59, 48, .55); filter: brightness(1.06); color: #fff; }

.btn-sm { padding: 8px 14px; font-size: 13px; border-radius: 8px; }
.btn-lg { padding: 18px 40px; font-size: 18px; border-radius: 12px; letter-spacing: 4px; }

/* ---------- 输入框 ---------- */
.input {
  width: 100%;
  padding: 12px 14px;
  background: rgba(0, 0, 0, .35);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  font-family: var(--font-cn);
  font-size: 15px;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.input:focus { border-color: rgba(246, 196, 83, .7); box-shadow: 0 0 0 3px rgba(246, 196, 83, .12); }
.input:disabled { opacity: .45; }
.input::placeholder { color: var(--dim-2); }

label.field-label {
  display: block;
  font-size: 12px; font-weight: 700; letter-spacing: 2px;
  color: var(--dim);
  margin-bottom: 7px;
  text-transform: uppercase;
}

/* ---------- 徽章 / 状态 ---------- */
.chip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  background: rgba(255, 255, 255, .04);
  font-size: 13px; font-weight: 700; letter-spacing: 2px;
  color: var(--dim);
}
.chip .dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.chip.gold { color: var(--gold); border-color: rgba(246, 196, 83, .5); background: rgba(246, 196, 83, .08); }
.chip.red { color: #ff6a5f; border-color: rgba(255, 59, 48, .5); background: rgba(255, 59, 48, .08); }
.chip.green { color: var(--ok); border-color: rgba(52, 211, 153, .5); background: rgba(52, 211, 153, .08); }
.chip.pulse .dot { animation: pulseDot 1s ease-in-out infinite; }

@keyframes pulseDot { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: .3; transform: scale(.7); } }

/* ---------- 扫光 / 扫描线 ---------- */
.scanlines::after {
  content: "";
  position: fixed; inset: 0; z-index: 60; pointer-events: none;
  background: repeating-linear-gradient(0deg, rgba(255, 255, 255, .022) 0 1px, transparent 1px 3px);
  mix-blend-mode: overlay;
}
.sweep {
  position: fixed; left: 0; right: 0; top: -20%;
  height: 26%; z-index: 61; pointer-events: none;
  background: linear-gradient(180deg, transparent, rgba(246, 196, 83, .045), transparent);
  animation: sweep 9s linear infinite;
}
@keyframes sweep { 0% { top: -26%; } 100% { top: 110%; } }

/* ---------- 文字发光 ---------- */
.glow-gold { color: var(--gold); text-shadow: 0 0 18px rgba(246, 196, 83, .55), 0 0 46px rgba(255, 159, 28, .28); }
.text-stroke { -webkit-text-stroke: 1px rgba(255, 255, 255, .28); }

/* ---------- 卡片 ---------- */
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
}

/* ---------- 斜切装饰块 ---------- */
.ribbon {
  display: inline-flex; align-items: center;
  padding: 8px 18px;
  background: linear-gradient(90deg, rgba(246, 196, 83, .16), rgba(246, 196, 83, .04));
  border: 1px solid rgba(246, 196, 83, .35);
  clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
  font-weight: 800; letter-spacing: 3px; color: var(--gold);
  font-size: 15px;
}

/* ---------- Toast ---------- */
#toast {
  position: fixed; left: 50%; bottom: 34px; transform: translateX(-50%) translateY(20px);
  z-index: 200;
  padding: 12px 22px;
  border-radius: 10px;
  background: rgba(14, 17, 28, .92);
  border: 1px solid var(--line-2);
  color: var(--text);
  font-size: 14px; font-weight: 600; letter-spacing: 1px;
  opacity: 0; pointer-events: none;
  transition: all .3s ease;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .5);
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
#toast.err { border-color: rgba(255, 59, 48, .6); color: #ff8a82; }
#toast.ok { border-color: rgba(52, 211, 153, .6); color: #7ee7bd; }

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, .12); border-radius: 4px; }
::-webkit-scrollbar-track { background: transparent; }