/* =========================================================
   主题：深黑 + 火星暖光
   移动优先，禁用双击缩放与高亮
   ========================================================= */
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body {
  margin: 0; padding: 0;
  background: #0a0a0a;
  color: #e6e6e6;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  height: 100%;
  overflow: hidden;
  overscroll-behavior: none;
  user-select: none;
  -webkit-user-select: none;
}

.stage {
  position: fixed; inset: 0;
  display: flex; flex-direction: column;
  background:
    radial-gradient(ellipse at 50% 80%, #1a0e08 0%, #0a0a0a 55%, #000 100%);
  overflow: hidden;
}

/* =========================================================
   顶部状态条
   ========================================================= */
.topbar {
  position: absolute; top: 0; left: 0; right: 0;
  display: flex; align-items: center; gap: 8px;
  padding: env(safe-area-inset-top, 12px) 16px 8px;
  padding-top: max(env(safe-area-inset-top, 12px), 12px);
  font-size: 13px; color: #888;
  z-index: 10;
  pointer-events: none;
}
.topbar__title { color: #d0d0d0; letter-spacing: 2px; font-weight: 300; }
.topbar__count { color: #555; }
.topbar__hint { margin-left: auto; color: #6a6a6a; font-size: 12px; }

/* =========================================================
   烟与火舞台
   ========================================================= */
.cig-wrap {
  position: relative;
  flex: 1 1 auto;
  display: flex; align-items: center; justify-content: center;
  min-height: 0;
}
.cig {
  width: 40px; height: 60vh; max-height: 540px; min-height: 320px;
  filter: drop-shadow(0 6px 20px rgba(255, 120, 40, 0.15));
  transition: filter 600ms ease;
}
.cig.is-lit {
  filter: drop-shadow(0 8px 32px rgba(255, 140, 50, 0.35));
}

/* 烟雾粒子层 */
.smoke {
  position: absolute;
  left: 50%; top: 30%;
  width: 200px; height: 300px;
  transform: translateX(-50%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 800ms ease;
}
.smoke.is-active { opacity: 1; }

.smoke__puff {
  position: absolute;
  bottom: 0; left: 50%;
  width: 14px; height: 14px;
  background: radial-gradient(circle, rgba(220,220,220,0.55) 0%, rgba(180,180,180,0.18) 50%, rgba(120,120,120,0) 75%);
  border-radius: 50%;
  transform: translate(-50%, 0) scale(0.4);
  filter: blur(2px);
  animation: smokeRise 4.2s linear forwards;
  will-change: transform, opacity;
}
@keyframes smokeRise {
  0%   { transform: translate(-50%, 0)    scale(0.4); opacity: 0; }
  10%  { opacity: 0.7; }
  60%  { transform: translate(-60%, -180px) scale(1.4) rotate(-10deg); opacity: 0.45; }
  100% { transform: translate(-30%, -320px) scale(2.4) rotate(20deg); opacity: 0; }
}

/* =========================================================
   点烟按钮（覆盖在滤嘴下方，拇指友好）
   ========================================================= */
.ignite-btn {
  position: absolute;
  bottom: 22%; left: 50%;
  transform: translateX(-50%);
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 999px;
  color: #ccc;
  font-size: 14px; letter-spacing: 1px;
  cursor: pointer;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: transform 120ms ease, background 200ms ease, border-color 200ms ease, color 200ms ease;
}
.ignite-btn:active { transform: translateX(-50%) scale(0.96); }
.ignite-btn:disabled,
.ignite-btn.is-cooldown {
  opacity: 0.4; pointer-events: none;
}
.ignite-btn__dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #ff7a1a;
  box-shadow: 0 0 8px rgba(255,122,26,0.8);
  animation: emberPulse 1.6s ease-in-out infinite;
}
.ignite-btn.is-lit .ignite-btn__dot {
  background: #ffcf6a; box-shadow: 0 0 10px rgba(255,180,80,0.9);
}
.ignite-btn.is-cooldown .ignite-btn__dot {
  background: #555; box-shadow: none; animation: none;
}
@keyframes emberPulse {
  0%, 100% { transform: scale(1);   opacity: 0.9; }
  50%      { transform: scale(1.4); opacity: 0.5; }
}

/* =========================================================
   弹幕
   ========================================================= */
.danmu-layer {
  position: absolute; inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 5;
}
.danmu {
  position: absolute;
  left: 100%;
  top: 0;
  white-space: nowrap;
  font-size: 14px;
  /* 颜色由 danmu.js 内联 style 随机指定,这里只给基础 */
  color: #cfcfcf;
  text-shadow: 0 1px 4px rgba(0,0,0,0.7);
  will-change: transform, opacity;
  animation: danmuFly linear forwards;
  letter-spacing: 0.5px;
  pointer-events: none;
}

@keyframes danmuFly {
  0%   { transform: translateX(0);    opacity: 0; }
  6%   { opacity: 1; }
  94%  { opacity: 1; }
  100% { transform: translateX(calc(-100vw - 100%)); opacity: 0; }
}

/* =========================================================
   底部输入栏
   ========================================================= */
.composer {
  position: relative;
  display: flex; align-items: center; gap: 8px;
  padding: 10px 12px calc(10px + env(safe-area-inset-bottom, 0px));
  padding-bottom: max(10px, env(safe-area-inset-bottom, 0px));
  background: rgba(10,10,10,0.85);
  border-top: 1px solid rgba(255,255,255,0.06);
  z-index: 20;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.composer__input {
  flex: 1 1 auto;
  height: 40px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 999px;
  color: #e6e6e6;
  font-size: 15px;
  padding: 0 16px;
  outline: none;
  transition: border-color 200ms ease, background 200ms ease;
}
.composer__input::placeholder { color: #666; }
.composer__input:focus {
  border-color: rgba(255,170,80,0.5);
  background: rgba(255,255,255,0.08);
}
.composer__send {
  height: 40px; padding: 0 18px;
  background: linear-gradient(135deg, #ff8a3c, #ff5a1f);
  border: none; border-radius: 999px;
  color: #fff; font-size: 14px; font-weight: 500;
  letter-spacing: 2px;
  cursor: pointer;
  transition: transform 120ms ease, opacity 200ms ease;
}
.composer__send:active { transform: scale(0.95); }
.composer__send:disabled { opacity: 0.4; pointer-events: none; }

/* 小屏适配 */
@media (max-height: 640px) {
  .cig { height: 56vh; }
  .ignite-btn { bottom: 18%; padding: 10px 18px; font-size: 13px; }
}
@media (min-width: 768px) {
  .cig { height: 64vh; max-height: 640px; }
  .stage { max-width: 480px; margin: 0 auto; box-shadow: 0 0 60px rgba(255,100,30,0.06); }
}