/* ==================== 顶部图标按钮（切换皮肤 / 公告）==================== */
.top-actions {
  position: fixed;
  top: calc(10px + env(safe-area-inset-top));
  right: calc(10px + env(safe-area-inset-right));
  z-index: 60;
  display: flex;
  gap: 8px;
}

.icon-btn {
  position: relative;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 2px solid transparent;
  background: rgba(120,120,140,.32);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  cursor: pointer;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 18px rgba(0,0,0,.18);
  -webkit-tap-highlight-color: transparent;
  transition: transform .18s ease, background-color .2s ease, color .2s ease;
}

.icon-btn svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon-btn:active { transform: scale(.93); }

.theme-icon { display: none; }
[data-theme="default"] .theme-icon-default,
[data-theme="berry"] .theme-icon-berry,
[data-theme="apple"] .theme-icon-apple,
[data-theme="neuro"] .theme-icon-neuro { display: block; }

[data-theme="berry"] .icon-btn { color: #8B3A62; background: rgba(255,255,255,.6); border-color: rgba(169,103,122,.35); }
[data-theme="neuro"] .icon-btn { color: #E8EAF0; background: rgba(255,255,255,.1); }

.badge-dot {
  position: absolute;
  top: 5px;
  right: 5px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #ff4d4f;
  border: 2px solid rgba(255,255,255,.85);
}

@media (max-width: 640px) {
  .top-actions { top: calc(8px + env(safe-area-inset-top)); right: calc(8px + env(safe-area-inset-right)); gap: 6px; }
  .icon-btn { width: 42px; height: 42px; }
  .icon-btn svg { width: 20px; height: 20px; }
}

/* ==================== 皮肤切换面板 ==================== */
.theme-menu {
  position: fixed;
  top: calc(66px + env(safe-area-inset-top));
  right: calc(10px + env(safe-area-inset-right));
  z-index: 70;
  width: 186px;
  padding: 8px;
  border-radius: 16px;
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: 0 16px 40px rgba(0,0,0,.18);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.theme-menu-title { margin: 4px 10px 8px; font-size: .78rem; color: var(--muted); }

.theme-option {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 9px 10px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: .92rem;
  text-align: left;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.theme-option-name { flex: 1; }
.theme-option:hover { background: var(--primary-soft); }
.theme-option.active { background: var(--primary-soft); font-weight: 600; }

.theme-swatch { width: 20px; height: 20px; border-radius: 50%; flex-shrink: 0; border: 1px solid rgba(0,0,0,.12); }
.theme-swatch-default { background: linear-gradient(135deg, #4f6ef7, #8b5cf6); }
.theme-swatch-berry { background: linear-gradient(135deg, #F4C4D8, #EAAF3E); }
.theme-swatch-apple { background: linear-gradient(135deg, #B6EFC4, #9AD6DD); }
.theme-swatch-neuro { background: linear-gradient(135deg, #23262F, #5B7FFF); }

.theme-check {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0;
}
.theme-option.active .theme-check { opacity: 1; }

[data-theme="apple"] .icon-btn { color: #3a6b52; background: rgba(255,255,255,.78); border-color: rgba(182,239,196,.7); }

@media (max-width: 640px) {
  .theme-menu { top: calc(62px + env(safe-area-inset-top)); right: calc(8px + env(safe-area-inset-right)); }
}

/* ==================== 默认主题（原样式）==================== */
[data-theme="default"] {
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --primary: #4f6ef7;
  --primary-soft: #eef1ff;
  --ok: #16a34a;
  --warn: #d97706;
  --closed: #6b7280;
  --dead: #dc2626;
  --radius: 14px;
  --hero-bg: linear-gradient(135deg, #4f6ef7, #8b5cf6);
}

@media (prefers-color-scheme: dark) {
  [data-theme="default"] {
    --bg: #0f1115;
    --card: #181b22;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --line: #2a2f3a;
    --primary: #7b93ff;
    --primary-soft: #222a45;
  }
}

/* ==================== Berry 莓果奶油主题 ==================== */
[data-theme="berry"] {
  --bg: #FFF6F0;
  --card: #FFFAF7;
  --text: #8B3A62;
  --muted: #A9677A;
  --line: #F4C4D8;
  --primary: #A9677A;
  --primary-soft: #FBDCE8;
  --primary-hover: #8B3A62;
  --ok: #9FAF64;
  --warn: #F97940;
  --closed: #D9A373;
  --dead: #E8755B;
  --radius: 24px;
  --hero-bg: linear-gradient(135deg, #F4C4D8, #FBDCE8);
  
  /* Berry 特色变量 */
  --berry-accent: #C1B2A4;
  --berry-yellow: #EAAF3E;
  --berry-pink: #F3D2DC;
  --berry-cream: #FFFAF7;
  --berry-dark: #8B3A62;
}

[data-theme="berry"] body {
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Yuanti SC", "Microsoft YaHei", sans-serif;
}

[data-theme="berry"] .hero {
  background: var(--hero-bg);
  color: var(--berry-dark);
  position: relative;
}

[data-theme="berry"] .hero::before {
  content: '🌸';
  position: absolute;
  top: 16px;
  left: 20px;
  font-size: 2rem;
  opacity: .4;
}

[data-theme="berry"] .hero::after {
  content: '🌸';
  position: absolute;
  bottom: 16px;
  right: 20px;
  font-size: 1.5rem;
  opacity: .3;
}

[data-theme="berry"] .card {
  border-radius: var(--radius);
  border: 2px solid var(--line);
  box-shadow: 0 2px 8px rgba(169,103,122,.08);
}

[data-theme="berry"] .tab {
  border-radius: 999px;
  border: 2px solid var(--line);
  font-weight: 500;
  transition: all .3s ease;
}

[data-theme="berry"] .tab.active {
  background: var(--primary);
  color: var(--card);
  border-color: var(--primary);
  box-shadow: 0 2px 6px rgba(169,103,122,.2);
}

[data-theme="berry"] .btn {
  border-radius: 999px;
  border: 2px solid var(--line);
  font-weight: 500;
  transition: all .3s ease;
}

[data-theme="berry"] .btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(169,103,122,.15);
}

[data-theme="berry"] .btn.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--card);
}

[data-theme="berry"] .btn.primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
}

[data-theme="berry"] .site {
  border-radius: var(--radius);
  border: 2px solid var(--line);
  transition: all .3s ease;
}

[data-theme="berry"] .site:hover {
  border-color: var(--berry-pink);
  box-shadow: 0 4px 12px rgba(169,103,122,.12);
}

[data-theme="berry"] .badge {
  border-radius: 999px;
  padding: 3px 10px;
  font-weight: 500;
  border: 1.5px solid currentColor;
}

[data-theme="berry"] .badge.ok {
  background: rgba(159,175,100,.12);
  color: var(--ok);
}

[data-theme="berry"] .badge.unstable {
  background: rgba(249,121,64,.12);
  color: var(--warn);
}

[data-theme="berry"] input, 
[data-theme="berry"] textarea {
  border-radius: 16px;
  border: 2px solid var(--line);
  background: var(--card);
}

[data-theme="berry"] input:focus, 
[data-theme="berry"] textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(169,103,122,.1);
}

[data-theme="berry"] .cond-tag {
  border-radius: 999px;
  border: 1.5px solid var(--warn);
  padding: 2px 10px;
}

/* ==================== 青苹果主题 ==================== */
[data-theme="apple"] {
  --bg: #f0fdf4;
  --card: rgba(255,255,255,.78);
  --text: #3a5a4a;
  --muted: #6a9a82;
  --line: rgba(182,239,196,.55);
  --primary: #4a8c6f;
  --primary-soft: #eafcd7;
  --primary-hover: #3d7560;
  --ok: #3a6b52;
  --warn: #cf7a1c;
  --closed: #4a6b3a;
  --dead: #b3402f;
  --radius: 14px;
  --hero-bg: linear-gradient(135deg, #e8fce8 0%, #edfcf5 55%, #e6f7fa 100%);
}

[data-theme="apple"] body {
  background: linear-gradient(135deg, #f0fdf4 0%, #e8fce8 30%, #edfcf5 60%, #e6f7fa 100%);
  background-attachment: fixed;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", sans-serif;
}

[data-theme="apple"] .hero { color: #4a8c6f; }
[data-theme="apple"] .hero h1 { color: #4a8c6f; letter-spacing: 2px; }
[data-theme="apple"] .hero p { color: #7ab89a; font-weight: 300; }

[data-theme="apple"] .tabs { background: transparent; }
[data-theme="apple"] .tab {
  background: rgba(255,255,255,.72);
  border: 1px solid rgba(182,239,196,.6);
  color: #4a7c65;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
[data-theme="apple"] .tab.active {
  background: linear-gradient(135deg, #B6EFC4, #9AD6DD);
  border-color: transparent;
  color: #2f5a47;
  font-weight: 600;
}

[data-theme="apple"] .card,
[data-theme="apple"] .site,
[data-theme="apple"] .memo-group {
  background: var(--card);
  border: 1px solid rgba(182,239,196,.45);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

[data-theme="apple"] .site { position: relative; overflow: hidden; }
[data-theme="apple"] .site::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  border-radius: 14px 14px 0 0;
  background: linear-gradient(90deg, #B6EFC4, #9AD6DD);
  opacity: 0;
  transition: opacity .3s ease;
}
[data-theme="apple"] .site:hover {
  transform: translateY(-4px);
  border-color: rgba(154,214,221,.6);
  box-shadow: 0 8px 25px rgba(154,214,221,.22);
}
[data-theme="apple"] .site:hover::before { opacity: 1; }

[data-theme="apple"] .section-title,
[data-theme="apple"] .cat-head h3 {
  padding-left: 14px;
  border-left: 3px solid #B6EFC4;
  color: #4a7c65;
}
[data-theme="apple"] .cat-head span { color: #7ab89a; }

[data-theme="apple"] .badge { border-radius: 10px; font-weight: 500; }
[data-theme="apple"] .badge.ok { background: #B6EFC4; color: #3a6b52; }
[data-theme="apple"] .badge.unstable { background: #EAFFD5; color: #4a6b3a; }
[data-theme="apple"] .badge.closed { background: #d4ecd9; color: #3a6b52; }
[data-theme="apple"] .badge.dead { background: #fbe3dc; color: #b3402f; }

[data-theme="apple"] .cond-tag { background: #EAFFD5; color: #4a6b3a; border-radius: 8px; }
[data-theme="apple"] .info dt { color: #7ab89a; }
[data-theme="apple"] .field code { background: rgba(240,253,244,.9); color: #4a7c65; }
[data-theme="apple"] .memo-note { color: #6a9a82; }

[data-theme="apple"] .btn {
  background: rgba(255,255,255,.82);
  border: 1px solid rgba(182,239,196,.75);
  color: #4a7c65;
  border-radius: 12px;
}
[data-theme="apple"] .btn:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(154,214,221,.22); }
[data-theme="apple"] .btn.primary {
  background: linear-gradient(135deg, #8ed4a9, #9ad6dd);
  border-color: transparent;
  color: #274c3c;
  font-weight: 600;
}

[data-theme="apple"] input,
[data-theme="apple"] textarea,
[data-theme="apple"] select {
  background: rgba(255,255,255,.85);
  border: 1px solid rgba(182,239,196,.75);
  border-radius: 12px;
  color: #3a5a4a;
}
[data-theme="apple"] input:focus,
[data-theme="apple"] textarea:focus,
[data-theme="apple"] select:focus {
  outline: none;
  border-color: #9AD6DD;
  box-shadow: 0 0 0 3px rgba(154,214,221,.25);
}

[data-theme="apple"] footer { color: #8fb8a4; }
[data-theme="apple"] .notice ul { color: #6a9a82; }

/* ==================== Neuro 新拟态深色主题 ==================== */
[data-theme="neuro"] {
  --bg: #1A1D26;
  --card: #23262F;
  --card-light: #2A2E38;
  --text: #E8EAF0;
  --muted: #9BA3B4;
  --line: #353945;
  --primary: #5B7FFF;
  --primary-soft: #2D3748;
  --primary-hover: #4A6AE6;
  --ok: #4ADE80;
  --warn: #FB923C;
  --closed: #8B92A4;
  --dead: #F87171;
  --radius: 16px;
  --hero-bg: linear-gradient(135deg, #23262F, #2D3748);
  
  /* Neuro 特色变量 */
  --shadow-sm: 4px 4px 8px rgba(10,12,18,.5), -4px -4px 8px rgba(40,44,54,.3);
  --shadow-md: 6px 6px 12px rgba(10,12,18,.6), -6px -6px 12px rgba(40,44,54,.4);
  --shadow-inner: inset 3px 3px 6px rgba(10,12,18,.4), inset -3px -3px 6px rgba(40,44,54,.2);
  --shadow-inner-sm: inset 2px 2px 4px rgba(10,12,18,.3), inset -2px -2px 4px rgba(40,44,54,.15);
}

[data-theme="neuro"] body {
  background: var(--bg);
}

[data-theme="neuro"] .hero {
  background: var(--hero-bg);
  color: var(--text);
  box-shadow: 0 4px 16px rgba(0,0,0,.3);
}

[data-theme="neuro"] .tabs {
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 2px 8px rgba(0,0,0,.2);
}

[data-theme="neuro"] .tab {
  background: var(--card);
  border: none;
  box-shadow: var(--shadow-sm);
  transition: all .3s ease;
}

[data-theme="neuro"] .tab:hover {
  box-shadow: var(--shadow-md);
}

[data-theme="neuro"] .tab.active {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-inner-sm), 0 0 12px rgba(91,127,255,.4);
}

[data-theme="neuro"] .card {
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}

[data-theme="neuro"] .site {
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  transition: all .3s ease;
}

[data-theme="neuro"] .site:hover {
  box-shadow: var(--shadow-md);
  border-color: #404556;
}

[data-theme="neuro"] .btn {
  background: var(--card);
  border: none;
  box-shadow: var(--shadow-sm);
  transition: all .3s ease;
}

[data-theme="neuro"] .btn:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

[data-theme="neuro"] .btn:active {
  box-shadow: var(--shadow-inner-sm);
  transform: translateY(0);
}

[data-theme="neuro"] .btn.primary {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-sm), 0 0 12px rgba(91,127,255,.3);
}

[data-theme="neuro"] .btn.primary:hover {
  background: var(--primary-hover);
  box-shadow: var(--shadow-md), 0 0 16px rgba(91,127,255,.4);
}

[data-theme="neuro"] .btn.primary:active {
  box-shadow: var(--shadow-inner-sm), 0 0 8px rgba(91,127,255,.2);
}

[data-theme="neuro"] input, 
[data-theme="neuro"] textarea {
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-inner-sm);
}

[data-theme="neuro"] input:focus, 
[data-theme="neuro"] textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: var(--shadow-inner-sm), 0 0 0 3px rgba(91,127,255,.2);
}

[data-theme="neuro"] .badge {
  background: var(--card-light);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}

[data-theme="neuro"] .badge.ok {
  background: rgba(74,222,128,.15);
  color: var(--ok);
  border-color: rgba(74,222,128,.3);
}

[data-theme="neuro"] .badge.unstable {
  background: rgba(251,146,60,.15);
  color: var(--warn);
  border-color: rgba(251,146,60,.3);
}

[data-theme="neuro"] .badge.closed {
  background: rgba(139,146,164,.15);
  color: var(--closed);
  border-color: rgba(139,146,164,.3);
}

[data-theme="neuro"] .badge.dead {
  background: rgba(248,113,113,.15);
  color: var(--dead);
  border-color: rgba(248,113,113,.3);
}

[data-theme="neuro"] .cond-tag {
  background: rgba(251,146,60,.15);
  border: 1px solid rgba(251,146,60,.3);
  box-shadow: var(--shadow-sm);
}

[data-theme="neuro"] #toast {
  background: var(--card);
  color: var(--text);
  box-shadow: var(--shadow-md);
}

/* ==================== 通用过渡动画 ==================== */
[data-theme] {
  transition: background-color .4s ease, color .4s ease;
}

[data-theme] * {
  transition: background-color .3s ease, color .3s ease, border-color .3s ease, box-shadow .3s ease;
}