/* ============================================================
   烟花寄语墙 · 双色系视觉规格（金 #e0d0b0 / 霓虹青 #00f3ff）
   - KISS：单一全局变量层 + 单一缓动曲线
   - DRY：玻璃拟态、按钮、输入框统一公式
   - 字体：Noto Serif SC（典雅） + Inter（UI） + Share Tech Mono（HUD）
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500&family=Noto+Serif+SC:wght@300;400;500;700&family=Share+Tech+Mono&display=swap');

/* ---------- Design Tokens ---------- */
:root {
  /* 背景色阶 */
  --bg-base:        #000;
  --bg-deep:        #050810;
  --bg-cyber:       #020b14;
  --bg-panel:       rgba(8, 12, 20, 0.75);
  --bg-panel-solid: #0a0f19;

  /* 金色（仪式 / 信息层） */
  --gold-1:   #fff;
  --gold-2:   #e0d0b0;
  --gold-3:   #cbb584;
  --gold-4:   #a09070;
  --gold-glow: rgba(224, 208, 176, 0.4);
  --gold-soft: rgba(224, 208, 176, 0.1);

  /* 霓虹青（科技 / HUD 层） */
  --cyan:      #00f3ff;
  --cyan-glow: rgba(0, 243, 255, 0.4);
  --cyan-soft: rgba(0, 243, 255, 0.1);

  /* 文字层级 */
  --text-1: rgba(255, 255, 255, 0.95);
  --text-2: rgba(255, 255, 255, 0.6);
  --text-3: rgba(255, 255, 255, 0.4);

  /* 边框 */
  --border-1: rgba(255, 255, 255, 0.2);
  --border-2: rgba(255, 255, 255, 0.1);

  /* 阴影 */
  --shadow-base: 0 10px 40px rgba(0, 0, 0, 0.5);
  --shadow-deep: 0 20px 50px rgba(0, 0, 0, 0.8);

  /* 缓动 */
  --ease: cubic-bezier(0.25, 0.8, 0.25, 1);

  /* 字体 */
  --font-serif: 'Noto Serif SC', 'PingFang SC', 'Microsoft YaHei', serif;
  --font-sans:  'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono:  'Share Tech Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg-base);
  color: var(--text-1);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---------- 背景层（场景切换） ---------- */
#sky {
  position: fixed;
  inset: 0;
  z-index: 1;
  background: radial-gradient(ellipse at center, #1a233a 0%, #050810 70%, #000 100%);
  background-size: cover;
  background-position: center;
  transition: background-image 0.8s var(--ease), opacity 0.8s var(--ease);
}
#sky.scene-image {
  background-size: cover;
  background-repeat: no-repeat;
  /* 与云上花火一致：底部对齐，保留下半部（楼房 / 地面 / 海面 / 雪原） */
  background-position: center bottom;
}
#sky::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.35) 0%, rgba(0,0,0,0) 35%, rgba(0,0,0,0) 60%, rgba(0,0,0,0.55) 100%);
  pointer-events: none;
}

#fireworksCanvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
}
#textCanvas { display: none; }

/* ---------- HUD 装饰层（四角 L + 上下渐变细线） ---------- */
.hud-layer {
  position: fixed;
  inset: 0;
  z-index: 3;
  pointer-events: none;
}
.hud-layer::before,
.hud-layer::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 243, 255, 0.3), transparent);
}
.hud-layer::before { top: 0; }
.hud-layer::after  { bottom: 0; }

.hud-corner {
  position: absolute;
  width: 60px;
  height: 60px;
  border: 1.5px solid rgba(0, 243, 255, 0.25);
}
.hud-corner.tl { top: 16px; left: 16px;    border-right: none; border-bottom: none; }
.hud-corner.tr { top: 16px; right: 16px;   border-left:  none; border-bottom: none; }
.hud-corner.bl { bottom: 16px; left: 16px; border-right: none; border-top:    none; }
.hud-corner.br { bottom: 16px; right: 16px;border-left:  none; border-top:    none; }

/* ---------- 顶部品牌（左上） ---------- */
.brand {
  position: fixed;
  top: 36px;
  left: 56px;
  z-index: 5;
  pointer-events: none;
  user-select: none;
  animation: fadeUp 0.8s var(--ease) both;
}
.brand-title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.5rem;
  letter-spacing: 0.4rem;
  background: linear-gradient(180deg, #fff 30%, var(--gold-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 6px 20px rgba(0,0,0,0.4);
}
.brand-sub {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.35rem;
  color: rgba(0, 243, 255, 0.7);
  text-transform: uppercase;
}

/* ---------- 右上信息条 ---------- */
.info-bar {
  position: fixed;
  top: 32px;
  right: 56px;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 12px;
  animation: fadeUp 0.8s 0.2s var(--ease) both;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 36px;
  padding: 0 14px;
  background: var(--bg-panel);
  border: 1px solid var(--border-2);
  border-top-color: var(--border-1);
  border-radius: 18px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-1);
  letter-spacing: 0.05rem;
  box-shadow: var(--shadow-base);
}
.chip.is-hidden { display: none; }

.chip .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #2dd47a;
  box-shadow: 0 0 8px rgba(45, 212, 122, 0.7);
  animation: blink 2s infinite;
}

.chip .avatar {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px solid var(--gold-glow);
  object-fit: cover;
}

.chip .muted { color: var(--text-2); }

/* 通用圆形按钮（信息条右端 / 抽屉触发 / 主题切换） */
.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.55);
  border: 1px solid rgba(0, 243, 255, 0.4);
  color: var(--cyan);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 0 15px rgba(0, 243, 255, 0.1);
  transition: all 0.4s var(--ease);
}
.icon-btn svg {
  width: 20px;
  height: 20px;
  filter: drop-shadow(0 0 4px rgba(0, 243, 255, 0.6));
  transition: transform 0.4s var(--ease);
}
.icon-btn:hover {
  transform: scale(1.08);
  background: rgba(0, 243, 255, 0.15);
  box-shadow: 0 0 25px rgba(0, 243, 255, 0.4);
}
.icon-btn.is-active {
  background: var(--cyan);
  color: #000;
  box-shadow: 0 0 30px rgba(0, 243, 255, 0.6);
}
.icon-btn.is-active svg {
  transform: rotate(180deg);
  filter: none;
}

/* 音效按钮：默认显示 on 图标，muted 时切换为 off */
#soundBtn .icon-sound-off { display: none; }
#soundBtn.muted .icon-sound-on  { display: none; }
#soundBtn.muted .icon-sound-off { display: block; }
#soundBtn.muted { opacity: 0.5; }

/* 头像区容器（登录后可见） */
.avatar-wrap {
  position: relative;
  display: none;
  align-items: center;
  gap: 2px;
}
.avatar-wrap.visible { display: inline-flex; }

.avatar-arrow {
  width: 22px;
  height: 22px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--gold-3);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: color 0.3s var(--ease), transform 0.3s var(--ease);
  opacity: 0.7;
}
.avatar-arrow:hover { opacity: 1; color: var(--gold-2); }
.avatar-arrow.is-open { transform: rotate(180deg); color: var(--gold-2); opacity: 1; }
.avatar-arrow svg { width: 12px; height: 12px; }

.avatar-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 10;
  padding: 8px;
  min-width: 110px;
  background: var(--bg-panel);
  border: 1px solid var(--border-2);
  border-top-color: var(--border-1);
  border-radius: 14px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-deep);
  opacity: 0;
  transform: translateY(-6px) scale(0.97);
  transform-origin: top right;
  pointer-events: none;
  transition: all 0.25s var(--ease);
}
.avatar-menu.open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

/* 登录下拉容器 */
.login-wrap {
  position: relative;
}
.login-wrap.is-hidden { display: none; }
.login-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  min-width: 158px;
  background: var(--bg-panel);
  border: 1px solid var(--border-2);
  border-top-color: var(--border-1);
  border-radius: 14px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-deep);
  opacity: 0;
  transform: translateY(-6px) scale(0.97);
  transform-origin: top right;
  pointer-events: none;
  transition: all 0.25s var(--ease);
}
.login-menu.open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}
.login-option {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 9px 12px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--text-1);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  letter-spacing: 0.08rem;
  text-align: left;
  cursor: pointer;
  transition: all 0.25s var(--ease);
  white-space: nowrap;
}
.login-option:hover {
  background: var(--gold-soft);
  border-color: var(--gold-glow);
  color: var(--gold-2);
  padding-left: 16px;
}
.login-option svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* 登录按钮（金色文字按钮） */
.btn-login {
  height: 36px;
  padding: 0 16px;
  border: 1px solid var(--gold-glow);
  border-top-color: rgba(255, 255, 255, 0.25);
  border-radius: 18px;
  background: rgba(224, 208, 176, 0.08);
  color: var(--gold-2);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  letter-spacing: 0.15rem;
  cursor: pointer;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all 0.4s var(--ease);
}
.btn-login:hover {
  transform: translateY(-2px);
  background: rgba(224, 208, 176, 0.18);
  box-shadow: 0 8px 25px rgba(224, 208, 176, 0.25);
  color: #fff;
}

/* ---------- 右侧抽屉触发（菜单按钮悬浮在 info-bar 中） ---------- */

/* ---------- 操作下拉（点击菜单按钮展开） ---------- */
.action-menu {
  position: fixed;
  top: 84px;
  right: 56px;
  z-index: 6;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 10px;
  min-width: 200px;
  background: var(--bg-panel);
  border: 1px solid var(--border-2);
  border-top-color: var(--border-1);
  border-radius: 14px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-deep);
  opacity: 0;
  transform: translateY(-8px) scale(0.97);
  transform-origin: top right;
  pointer-events: none;
  transition: all 0.3s var(--ease);
}
.action-menu.open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}
.action-menu button {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--text-1);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  text-align: left;
  cursor: pointer;
  transition: all 0.25s var(--ease);
}
.action-menu button:hover:not([disabled]) {
  background: var(--gold-soft);
  border-color: var(--gold-glow);
  padding-left: 16px;
  color: var(--gold-2);
}
.action-menu button[disabled] {
  opacity: 0.35;
  cursor: not-allowed;
}
.action-menu button .menu-ico {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: 0.85;
}

/* ---------- 底部输入区（elegant-input） ---------- */
.input-zone {
  position: fixed;
  left: 50%;
  bottom: 64px;
  z-index: 5;
  transform: translateX(-50%);
  display: flex;
  align-items: flex-end;
  gap: 24px;
  width: min(640px, 92vw);
  /* 注意：使用专属 keyframes 保留 translateX(-50%)，否则会被 fadeUp 覆盖 */
  animation: fadeUpCentered 0.8s 0.4s var(--ease) both;
}

.elegant-input-wrap {
  flex: 1;
  position: relative;
}
.elegant-input {
  width: 100%;
  height: 52px;
  padding: 0 56px 0 4px;
  border: none;
  border-bottom: 1px solid var(--border-1);
  background: transparent;
  color: var(--text-1);
  font-family: var(--font-serif);
  font-size: 1.1rem;
  letter-spacing: 0.15rem;
  text-align: center;
  outline: none;
  transition: border-color 0.4s var(--ease);
}
.elegant-input::placeholder {
  color: var(--text-3);
  letter-spacing: 0.25rem;
  font-size: 0.95rem;
}
.elegant-input:focus { border-bottom-color: var(--gold-2); }

.input-counter {
  position: absolute;
  right: 6px;
  bottom: 6px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-3);
  letter-spacing: 0.05rem;
  pointer-events: none;
}
.elegant-input:focus + .input-counter { color: var(--gold-3); }

.btn-launch {
  position: relative;
  height: 52px;
  padding: 0 32px;
  border: none;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--gold-2) 0%, var(--gold-4) 100%);
  color: #1a1408;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.4rem;
  cursor: pointer;
  overflow: hidden;
  transition: all 0.4s var(--ease);
}
.btn-launch::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  transform: skewX(-20deg);
  animation: shine 6s infinite;
}
.btn-launch:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(224, 208, 176, 0.4);
}
.btn-launch:active { transform: translateY(0); }

/* 图片烟花上传按钮 */
.btn-img-upload {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  flex-shrink: 0;
  border: 1px solid var(--border-1);
  border-radius: 4px;
  background: transparent;
  color: var(--text-3);
  cursor: pointer;
  transition: all 0.3s var(--ease);
}
.btn-img-upload svg { width: 20px; height: 20px; }
.btn-img-upload:hover {
  border-color: var(--gold-3);
  color: var(--gold-3);
  transform: translateY(-2px);
}

/* 提示文字：放在 input-wrap 内 absolute 定位，自然居中于输入框（而非整个 input-zone） */
.input-hint {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin: 12px 0 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18rem;
  color: var(--text-3);
  pointer-events: none;
}
.input-hint a,
.input-hint .inline-link {
  color: var(--gold-3);
  text-decoration: none;
  border-bottom: 1px solid rgba(224, 208, 176, 0.3);
  padding-bottom: 1px;
  transition: color 0.3s var(--ease);
  pointer-events: auto;
}
/* inline-link：去掉按钮默认样式，视觉同超链接 / Button styled as inline link */
.inline-link {
  background: none;
  border: none;
  border-bottom: 1px solid rgba(224, 208, 176, 0.3);
  padding: 0 0 1px;
  margin: 0;
  font: inherit;
  cursor: pointer;
}
.input-hint a:hover,
.input-hint .inline-link:hover { color: var(--gold-1); border-bottom-color: var(--gold-2); }

/* ---------- 右下场景切换 Dock ---------- */
.theme-dock-container {
  position: fixed;
  right: 32px;
  bottom: 48px;
  z-index: 6;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 14px;
  /* 容器自身对点击透明，避免其 bounding box（含隐藏的 dock 占位）覆盖 input-zone 时拦截事件 */
  pointer-events: none;
}
.theme-dock-container > .icon-btn {
  pointer-events: auto;
}

.theme-dock {
  display: flex;
  gap: 10px;
  padding: 12px;
  background: rgba(8, 12, 20, 0.75);
  border: 1px solid var(--border-2);
  border-top-color: var(--border-1);
  border-radius: 16px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-deep);
  max-width: min(640px, 80vw);
  overflow-x: auto;
  scrollbar-width: none;
  opacity: 0;
  transform: translateY(8px) scale(0.97);
  transform-origin: bottom right;
  pointer-events: none;
  transition: all 0.4s var(--ease);
}
.theme-dock::-webkit-scrollbar { display: none; }
.theme-dock.open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.theme-thumb {
  position: relative;
  flex: 0 0 auto;
  width: 64px;
  height: 80px;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  transition: transform 0.3s var(--ease);
}
.thumb-preview {
  width: 64px;
  height: 64px;
  border-radius: 12px;
  background-size: cover;
  background-position: center;
  border: 2px solid rgba(255, 255, 255, 0.2);
  transition: all 0.3s var(--ease);
}
.theme-thumb:hover { transform: translateY(-3px); }
.theme-thumb:hover .thumb-preview {
  border-color: var(--cyan);
  box-shadow: 0 8px 20px rgba(0, 243, 255, 0.3);
}
.theme-thumb.is-active .thumb-preview {
  border-color: var(--cyan);
  box-shadow: 0 0 0 2px rgba(0, 243, 255, 0.5), 0 8px 20px rgba(0, 243, 255, 0.3);
}
.thumb-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1rem;
  color: var(--text-2);
  white-space: nowrap;
  transition: color 0.3s var(--ease);
}
.theme-thumb.is-active .thumb-label {
  color: var(--cyan);
  text-shadow: 0 0 8px rgba(0, 243, 255, 0.6);
}

/* ---------- 留言墙抽屉 ---------- */
.drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 420px;
  max-width: 92vw;
  height: 100%;
  z-index: 20;
  background: rgba(10, 15, 25, 0.95);
  border-left: 1px solid var(--gold-glow);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: -10px 0 40px rgba(0, 0, 0, 0.8);
  transform: translateX(100%);
  transition: transform 0.45s var(--ease);
  display: flex;
  flex-direction: column;
}
.drawer.open { transform: translateX(0); }

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 28px 20px;
  border-bottom: 1px solid var(--gold-soft);
}
.drawer-header h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.4rem;
  letter-spacing: 0.4rem;
  background: linear-gradient(180deg, #fff 30%, var(--gold-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.drawer-header .close-btn {
  width: 32px;
  height: 32px;
  border: 1px solid var(--border-1);
  border-radius: 50%;
  background: transparent;
  color: var(--text-2);
  font-size: 18px;
  cursor: pointer;
  transition: all 0.4s var(--ease);
}
.drawer-header .close-btn:hover {
  transform: rotate(90deg);
  border-color: var(--gold-2);
  color: var(--gold-2);
}

.drawer-list {
  flex: 1;
  overflow-y: auto;
  list-style: none;
  margin: 0;
  padding: 16px 20px 28px;
}
.drawer-list li {
  display: grid;
  grid-template-columns: 40px 1fr;
  grid-template-rows: auto auto;
  gap: 4px 14px;
  padding: 14px 16px;
  margin-bottom: 10px;
  border: 1px solid var(--border-2);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.025);
  transition: all 0.3s var(--ease);
}
.drawer-list li:hover {
  border-color: var(--gold-glow);
  background: rgba(224, 208, 176, 0.06);
  transform: translateX(-2px);
}
.drawer-list .avatar {
  grid-row: 1 / 3;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--gold-glow);
  object-fit: cover;
}
.drawer-list .meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
}
.drawer-list .username {
  font-family: var(--font-sans);
  font-weight: 500;
  color: var(--gold-2);
  letter-spacing: 0.05rem;
}
.drawer-list time {
  font-family: var(--font-mono);
  color: var(--text-3);
}
.drawer-list .message {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  letter-spacing: 0.1rem;
  color: var(--text-1);
  word-break: break-all;
}
.drawer-list .loading,
.drawer-list .empty {
  display: block;
  text-align: center;
  padding: 60px 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.15rem;
  color: var(--text-3);
  background: transparent;
  border: none;
}

/* 抽屉滚动条 */
.drawer-list::-webkit-scrollbar { width: 4px; }
.drawer-list::-webkit-scrollbar-track { background: transparent; }
.drawer-list::-webkit-scrollbar-thumb {
  background: var(--gold-glow);
  border-radius: 2px;
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 160px;
  z-index: 30;
  transform: translateX(-50%) translateY(12px);
  padding: 12px 22px;
  background: rgba(2, 11, 20, 0.85);
  border: 1px solid rgba(0, 243, 255, 0.35);
  border-radius: 4px;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.15rem;
  box-shadow: 0 0 24px rgba(0, 243, 255, 0.25);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ---------- 动画 ---------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
/* 给已经使用 translateX(-50%) 居中的元素用，避免 transform 被覆盖 */
@keyframes fadeUpCentered {
  from { opacity: 0; transform: translateX(-50%) translateY(8px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}
@keyframes blink {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.5; transform: scale(1.4); }
}
@keyframes shine {
  0%   { left: -100%; }
  20%  { left: 100%; }
  100% { left: 100%; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 768px) {
  .brand { top: 24px; left: 24px; }
  .brand-title { font-size: 1.2rem; letter-spacing: 0.3rem; }
  .brand-sub { font-size: 0.6rem; letter-spacing: 0.2rem; }

  .info-bar { top: 24px; right: 24px; gap: 8px; }
  .chip { height: 32px; padding: 0 10px; font-size: 0.7rem; }
  .chip .avatar { width: 18px; height: 18px; }
  .icon-btn { width: 36px; height: 36px; }
  .btn-login { height: 32px; padding: 0 12px; font-size: 0.72rem; letter-spacing: 0.1rem; }

  .action-menu { top: 70px; right: 24px; min-width: 180px; }

  .input-zone { width: 92vw; bottom: 72px; gap: 12px; flex-direction: column; align-items: stretch; }
  .btn-launch { width: 100%; }
  .input-hint { bottom: 16px; padding: 0 16px; text-align: center; font-size: 0.65rem; }

  .theme-dock-container { right: 16px; bottom: 28px; }
  .theme-dock { padding: 10px; gap: 8px; max-width: 86vw; }
  .theme-thumb { width: 56px; height: 70px; }
  .thumb-preview { width: 56px; height: 56px; }
  .thumb-label { font-size: 0.6rem; }

  .drawer { width: 100%; }

  .hud-corner { width: 40px; height: 40px; }
}

@media (max-width: 480px) {
  .brand { display: none; }
}