/* ============================================================
 *  基础变量 — 系统深色(默认)
 * ============================================================ */
:root,
:root[data-theme="system-dark"] {
  --bg: #0b0d10;
  --bg-elev: #15181d;
  --card: #1c2126;
  --card-hover: #252b32;
  --border: #2a3138;
  --text: #e6e9ec;
  --text-mute: #8a949e;
  --accent: #4f8cff;
  --accent-soft: rgba(79, 140, 255, 0.12);
  --danger: #ff5e5e;
  --radius: 14px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

/* 系统浅色 */
@media (prefers-color-scheme: light) {
  :root[data-theme="system-dark"],
  :root:not([data-theme]) {
    --bg: #f6f7f9;
    --bg-elev: #ffffff;
    --card: #ffffff;
    --card-hover: #f0f4ff;
    --border: #e6e8ec;
    --text: #1d2128;
    --text-mute: #6a737d;
    --accent: #2a6dff;
    --accent-soft: rgba(42, 109, 255, 0.08);
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  }
}

@media (prefers-color-scheme: dark) {
  :root[data-theme="system-dark"],
  :root:not([data-theme]) {
    --bg: #0b0d10;
    --bg-elev: #15181d;
    --card: #1c2126;
    --card-hover: #252b32;
    --border: #2a3138;
    --text: #e6e9ec;
    --text-mute: #8a949e;
    --accent: #4f8cff;
    --accent-soft: rgba(79, 140, 255, 0.12);
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  }
}

/* ============================================================
 *  主题 1 — 极简白(light)
 * ============================================================ */
:root[data-theme="light"] {
  --bg: #ffffff;
  --bg-elev: #ffffff;
  --card: #fafbfc;
  --card-hover: #f0f4ff;
  --border: #e6e8ec;
  --text: #1d2128;
  --text-mute: #6a737d;
  --accent: #2a6dff;
  --accent-soft: rgba(42, 109, 255, 0.08);
  --danger: #e5484e;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

/* ============================================================
 *  主题 2 — 午夜黑(dark,纯黑加强版)
 * ============================================================ */
:root[data-theme="midnight"] {
  --bg: #000000;
  --bg-elev: #0a0a0a;
  --card: #131313;
  --card-hover: #1d1d1d;
  --border: #1f1f1f;
  --text: #f0f0f0;
  --text-mute: #7a7a7a;
  --accent: #00d9ff;
  --accent-soft: rgba(0, 217, 255, 0.12);
  --danger: #ff3b3b;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.8);
}

/* ============================================================
 *  主题 3 — 深海蓝(dark)
 * ============================================================ */
:root[data-theme="ocean"] {
  --bg: #0a1628;
  --bg-elev: #0f2138;
  --card: #162a45;
  --card-hover: #1d3556;
  --border: #243d5e;
  --text: #d4e3f7;
  --text-mute: #7d99c4;
  --accent: #4cc9f0;
  --accent-soft: rgba(76, 201, 240, 0.15);
  --danger: #f07178;
  --shadow: 0 4px 20px rgba(10, 22, 40, 0.6);
}

/* ============================================================
 *  主题 4 — 暮色紫(dark)
 * ============================================================ */
:root[data-theme="dusk"] {
  --bg: #1a1426;
  --bg-elev: #221a35;
  --card: #2d2342;
  --card-hover: #382c52;
  --border: #3d3157;
  --text: #e8dff5;
  --text-mute: #9d8bbf;
  --accent: #c77dff;
  --accent-soft: rgba(199, 125, 255, 0.15);
  --danger: #ff6b9d;
  --shadow: 0 4px 20px rgba(26, 20, 38, 0.6);
}

/* ============================================================
 *  主题 5 — 森林绿(dark)
 * ============================================================ */
:root[data-theme="forest"] {
  --bg: #0d1f17;
  --bg-elev: #14281e;
  --card: #1d372a;
  --card-hover: #264838;
  --border: #2d5440;
  --text: #d6efe1;
  --text-mute: #85b09c;
  --accent: #52d9a8;
  --accent-soft: rgba(82, 217, 168, 0.15);
  --danger: #f07178;
  --shadow: 0 4px 20px rgba(13, 31, 23, 0.6);
}

/* ============================================================
 *  主题 6 — 落日橙(light,暖色)
 * ============================================================ */
:root[data-theme="sunset"] {
  --bg: #fff8f0;
  --bg-elev: #ffffff;
  --card: #ffffff;
  --card-hover: #fff0e0;
  --border: #f5e6d3;
  --text: #4a2818;
  --text-mute: #a08268;
  --accent: #ff6b35;
  --accent-soft: rgba(255, 107, 53, 0.1);
  --danger: #e5484e;
  --shadow: 0 2px 16px rgba(255, 107, 53, 0.12);
}

/* ============================================================
 *  基础样式
 * ============================================================ */
* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Microsoft YaHei", Roboto, "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s ease, color 0.3s ease;
}

a { color: inherit; text-decoration: none; }

/* ============================================================
 *  头部
 * ============================================================ */
.hero {
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 24px 24px;
  text-align: center;
}

.hero h1 {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.hero .subtitle {
  color: var(--text-mute);
  font-size: 15px;
  margin-bottom: 28px;
}

.search-wrap {
  position: relative;
  max-width: 540px;
  margin: 0 auto 20px;
}

#search {
  width: 100%;
  padding: 14px 50px 14px 20px;
  font-size: 15px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.3s;
}

#search:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.search-wrap kbd {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  padding: 2px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-mute);
  background: var(--card);
}

/* ============================================================
 *  分类筛选
 * ============================================================ */
.filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 8px;
}

.chip {
  padding: 6px 14px;
  font-size: 13px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: transparent;
  color: var(--text-mute);
  cursor: pointer;
  transition: all 0.15s;
}

.chip:hover {
  background: var(--card);
  color: var(--text);
}

.chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ============================================================
 *  卡片网格
 * ============================================================ */
.grid {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 14px;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 12px 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
  transition: transform 0.15s, background 0.15s, border-color 0.15s;
  cursor: pointer;
  overflow: hidden;
}

.card:hover {
  background: var(--card-hover);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.card .icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 10px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}

.card .name {
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 4px;
  word-break: break-all;
}

.card .desc {
  font-size: 11px;
  color: var(--text-mute);
  line-height: 1.3;
  max-height: 2.6em;
  overflow: hidden;
}

.card .del {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 22px;
  height: 22px;
  border: none;
  border-radius: 50%;
  background: var(--danger);
  color: #fff;
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s;
}

body.edit-mode .card .del { opacity: 1; }
.card .del:hover { transform: scale(1.1); }

.empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--text-mute);
}

.empty h3 {
  font-size: 18px;
  color: var(--text);
  margin-bottom: 8px;
}

/* ============================================================
 *  页脚
 * ============================================================ */
footer {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
  text-align: center;
  font-size: 13px;
  color: var(--text-mute);
}

footer a {
  color: var(--accent);
  cursor: pointer;
}

footer a:hover { text-decoration: underline; }
.dot { margin: 0 8px; opacity: 0.4; }

/* ============================================================
 *  编辑按钮 / 主题按钮(右下角两个浮动按钮)
 * ============================================================ */
.edit-toggle,
.theme-toggle {
  position: fixed;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.edit-toggle {
  bottom: 24px;
  right: 24px;
  font-size: 22px;
  background: var(--accent);
}

.theme-toggle {
  bottom: 24px;
  right: 84px;
  font-size: 22px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
}

.edit-toggle:hover { transform: scale(1.1) rotate(-8deg); }
.theme-toggle:hover { transform: scale(1.1) rotate(15deg); }

.edit-toggle.active { background: var(--danger); }

/* ============================================================
 *  主题切换面板(从右侧滑入)
 * ============================================================ */
.theme-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 360px;
  max-width: 95vw;
  height: 100vh;
  background: var(--bg-elev);
  border-left: 1px solid var(--border);
  box-shadow: -8px 0 32px rgba(0, 0, 0, 0.18);
  z-index: 99;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
}

.theme-panel:not([hidden]) {
  transform: translateX(0);
}

.theme-panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.theme-panel-head h3 {
  font-size: 18px;
  font-weight: 600;
}

.theme-panel-close {
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--text-mute);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.theme-panel-close:hover {
  background: var(--card);
  color: var(--text);
}

.theme-panel-body {
  padding: 20px 24px 12px;
}

.theme-panel-grid {
  flex: 1;
  overflow-y: auto;
  padding: 12px 24px 24px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

/* 主题卡片 */
.theme-card {
  position: relative;
  padding: 14px 12px 12px;
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: all 0.15s;
  text-align: left;
  color: var(--text);
  font-family: inherit;
}

.theme-card:hover {
  border-color: var(--text-mute);
  transform: translateY(-2px);
}

.theme-card.active {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.theme-card.active::after {
  content: '✓';
  position: absolute;
  top: 8px;
  right: 10px;
  width: 20px;
  height: 20px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: bold;
}

.theme-palette {
  display: flex;
  gap: 4px;
  height: 28px;
  border-radius: 6px;
  overflow: hidden;
}

.theme-palette span {
  flex: 1;
}

.theme-meta {
  display: flex;
  align-items: center;
  gap: 8px;
}

.theme-emoji {
  font-size: 18px;
  line-height: 1;
}

.theme-name {
  font-size: 13px;
  font-weight: 500;
}

.theme-card-system .theme-palette {
  background: linear-gradient(90deg, #0b0d10 50%, #f6f7f9 50%);
}

.theme-card-system .theme-name {
  font-weight: 600;
}

/* 滚动条 */
.theme-panel-grid::-webkit-scrollbar { width: 6px; }
.theme-panel-grid::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

/* ============================================================
 *  弹窗(添加网址)
 * ============================================================ */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  backdrop-filter: blur(4px);
}

.modal[hidden] { display: none; }

.modal-card {
  width: min(420px, 90vw);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.modal-card h3 {
  font-size: 18px;
  margin-bottom: 16px;
}

.modal-card label {
  display: block;
  font-size: 13px;
  color: var(--text-mute);
  margin-bottom: 12px;
}

.modal-card input,
.modal-card select {
  display: block;
  width: 100%;
  padding: 10px 12px;
  margin-top: 6px;
  font-size: 14px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  outline: none;
  transition: border-color 0.15s;
}

.modal-card input:focus,
.modal-card select:focus {
  border-color: var(--accent);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 16px;
}

.modal-actions button {
  padding: 8px 18px;
  font-size: 14px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

.modal-actions .primary {
  background: var(--accent);
  color: #fff;
}

.modal-actions .primary:hover { opacity: 0.9; }

.modal-actions .ghost {
  background: transparent;
  color: var(--text-mute);
  border: 1px solid var(--border);
}

/* ============================================================
 *  响应式
 * ============================================================ */
@media (max-width: 600px) {
  .hero { padding: 32px 16px 16px; }
  .hero h1 { font-size: 28px; }
  .grid {
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 10px;
    padding: 16px;
  }
  .card { padding: 16px 8px 12px; }
  .card .icon { width: 40px; height: 40px; font-size: 22px; }

  .theme-toggle { right: 16px; bottom: 80px; }
  .edit-toggle  { right: 16px; bottom: 16px; }
}