/* ========================================
   🎨 主题配置中心（黑金风格 · 深邃质感）
   CSS 变量由 JS 动态注入，此处仅定义回退值
   ======================================== */
:root {
  --color-primary: #d4af37;
  --color-primary-light: #e5c158;
  --color-primary-lighter: #c5a028;
  --color-primary-pale: #f0d68a;
  --color-primary-gradient1: #f9eec1;
  --color-primary-gradient2: #b4942c;
  --color-accent: #b8860b;
  --color-accent-light: rgba(184, 134, 11, 0.15);
  --bg-page: #0a0a0a;
  --bg-panel: rgba(10, 10, 10, 0.96);
  --bg-card: rgba(20, 20, 20, 0.55);
  --bg-card-hover: rgba(30, 30, 30, 0.65);
  --bg-banner: rgba(212, 175, 55, 0.05);
  --bg-notice: rgba(212, 175, 55, 0.07);
  --bg-text-block: rgba(18, 18, 18, 0.5);
  --bg-tab: rgba(30, 30, 30, 0.7);
  --bg-overlay: rgba(0, 0, 0, 0.85);
  --bg-tab-active-start: #d4af37;
  --bg-tab-active-end: #8b6914;
  --text-white: #f0e6d2;
  --text-primary: rgba(240, 230, 210, 0.8);
  --text-secondary: rgba(210, 190, 150, 0.7);
  --text-dim: rgba(200, 180, 140, 0.5);
  --text-tab: rgba(210, 190, 150, 0.65);
  --text-tab-active: #0a0a0a;
  --text-logo: #e5c158;
  --border-card: rgba(212, 175, 55, 0.22);
  --border-card-hover: rgba(212, 175, 55, 0.5);
  --border-notice: rgba(212, 175, 55, 0.28);
  --border-banner: rgba(212, 175, 55, 0.22);
  --border-panel: rgba(212, 175, 55, 0.25);
  --border-panel-header: rgba(212, 175, 55, 0.12);
  --border-tab: rgba(212, 175, 55, 0.3);
  --border-tab-hover: rgba(212, 175, 55, 0.6);
  --border-text-block: rgba(212, 175, 55, 0.12);
  --border-logo: rgba(212, 175, 55, 0.25);
  --glow-hero: 0 12px 40px rgba(212, 175, 55, 0.18);
  --glow-logo: 0 0 20px rgba(212, 175, 55, 0.5);
  --glow-notice: 0 0 25px rgba(212, 175, 55, 0.1);
  --glow-card: 0 8px 25px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(212, 175, 55, 0.08) inset;
  --glow-card-hover: 0 12px 32px rgba(212, 175, 55, 0.22);
  --glow-card-icon: drop-shadow(0 0 8px rgba(212, 175, 55, 0.5));
  --glow-banner: 0 10px 35px rgba(212, 175, 55, 0.08);
  --glow-panel: 0 -10px 50px rgba(212, 175, 55, 0.06);
  --glow-panel-title: 0 0 12px rgba(212, 175, 55, 0.25);
  --glow-panel-image: 0 0 30px rgba(212, 175, 55, 0.1);
  --glow-tab-active: 0 0 18px rgba(212, 175, 55, 0.35);
  --glow-banner-title: 0 0 15px rgba(212, 175, 55, 0.25);
  --glow-hero-text: 0 0 30px rgba(212, 175, 55, 0.15);
  --glow-hero-sub: 0 0 8px rgba(212, 175, 55, 0.25);
  --ambient-light1: rgba(212, 175, 55, 0.12);
  --ambient-light2: rgba(184, 134, 11, 0.08);
  --card-corner-glow: rgba(212, 175, 55, 0.18);
  --font-hero-title: 20px;
  --font-hero-sub: 14px;
  --font-logo: 22px;
  --font-section-title: 20px;
  --font-section-sub: 13px;
  --font-card-title: 14px;
  --font-card-desc: 11px;
  --font-banner-title: 26px;
  --font-banner-text: 14px;
  --font-text-block-title: 18px;
  --font-text-block-text: 14px;
  --font-panel-title: 18px;
  --font-tab: 12px;
  --font-notice: 16px;
  --letter-spacing-logo: 2.5px;
  --letter-spacing-hero-sub: 3px;
  --radius-card: 18px;
  --radius-hero: 24px;
  --radius-banner: 24px;
  --radius-panel: 28px;
  --radius-notice: 18px;
  --radius-text-block: 20px;
  --radius-tab: 12px;
  --radius-logo: 8px;
  --radius-menu-btn: 14px;
  --radius-panel-back: 50%;
  --spacing-section-gap: 10px;
  --spacing-page-padding: 20px;
  --transition-card: 0.3s ease;
  --transition-card-active: 0.15s ease;
  --transition-tab: 0.25s ease;
  --transition-overlay: visibility 0s 0.35s, opacity 0.35s ease;
  --transition-overlay-active: visibility 0s 0s, opacity 0.35s ease;
  --transition-panel: transform 0.4s cubic-bezier(0.32, 0.72, 0, 1);
  --transition-panel-drag: transform 0.3s cubic-bezier(0.32, 0.72, 0, 1);
}

/* ========================================
   全局重置
   ======================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg-page);
  color: var(--text-white);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 20% 20%, var(--ambient-light1), transparent 50%),
    radial-gradient(circle at 80% 80%, var(--ambient-light2), transparent 55%);
  z-index: -1;
  pointer-events: none;
}

/* ========================================
   主容器
   ======================================== */
.container {
  width: 100%;
  max-width: 480px;
  margin: auto;
  min-height: 100vh;
  padding-bottom: 40px;
}

/* ========================================
   Hero 首图区域
   ======================================== */
.hero {
  position: relative;
  margin: var(--spacing-page-padding);
  height: 180px;
  border-radius: var(--radius-hero);
  overflow: hidden;
  box-shadow: var(--glow-hero);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(rgba(0,0,0,.25), rgba(0,0,0,.35));
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(to top, var(--bg-page) 0%, transparent 45%);
  pointer-events: none;
}

.topbar {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px var(--spacing-page-padding);
}

.logo {
  font-size: var(--font-logo);
  font-weight: 700;
  color: var(--text-logo);
  letter-spacing: var(--letter-spacing-logo);
  text-shadow: var(--glow-logo);
}

.menu-btn {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-menu-btn);
  background: rgba(20, 20, 20, 0.55);
  backdrop-filter: blur(12px);
  display: flex;
  justify-content: center;
  align-items: center;
  border: 1px solid var(--border-notice);
}

.menu-btn span {
  font-size: 20px;
  color: var(--color-primary);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 40px 24px;
}

.hero-sub {
  color: var(--color-primary-lighter);
  font-size: var(--font-hero-sub);
  margin-bottom: 12px;
  letter-spacing: var(--letter-spacing-hero-sub);
  text-shadow: var(--glow-hero-sub);
}

.hero-title {
  font-size: var(--font-hero-title);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
  background: linear-gradient(to bottom, var(--color-primary-gradient1), var(--color-primary-gradient2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: var(--glow-hero-text);
  filter: drop-shadow(0 2px 6px rgba(0,0,0,0.35));
  white-space: pre-line;
}

.hero-text {
  color: var(--text-primary);
  line-height: 1.8;
  font-size: var(--font-hero-sub);
  max-width: 320px;
  text-shadow: 0 1px 4px rgba(0,0,0,0.4);
}

/* ========================================
   通知栏
   ======================================== */
.notice {
  margin: var(--spacing-page-padding);
  padding: 14px 18px;
  border-radius: var(--radius-notice);
  background: var(--bg-notice);
  border: 1px solid var(--border-notice);
  backdrop-filter: blur(14px);
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-primary-lighter);
  box-shadow: var(--glow-notice);
}

.notice-logo {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-logo);
  overflow: hidden;
  flex-shrink: 0;
  background: rgba(212, 175, 55, 0.1);
  border: 1px solid var(--border-logo);
  display: flex;
  align-items: center;
  justify-content: center;
}

.notice-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

/* ========================================
   区块标题
   ======================================== */
.section-title {
  padding: 0 var(--spacing-page-padding);
  margin-top: 28px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.section-title h2 {
  font-size: var(--font-section-title);
  color: var(--color-primary-light);
  text-shadow: 0 0 10px rgba(212, 175, 55, 0.3);
}

.section-title span {
  font-size: var(--font-section-sub);
  color: var(--text-dim);
}

/* ========================================
   3列正方形卡片网格
   ======================================== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-section-gap);
  padding: 0 var(--spacing-page-padding);
}

.card {
  position: relative;
  aspect-ratio: 1 / 1;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-card);
  padding: 12px 10px;
  overflow: hidden;
  backdrop-filter: blur(18px);
  transition: var(--transition-card);
  box-shadow: var(--glow-card);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  cursor: pointer;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--border-card-hover);
  box-shadow: var(--glow-card-hover);
  background: var(--bg-card-hover);
}

.card:active {
  transform: scale(0.96);
  transition: var(--transition-card-active);
}

.card::before {
  content: "";
  position: absolute;
  width: 90px;
  height: 90px;
  right: -30px;
  top: -30px;
  background: radial-gradient(circle, var(--card-corner-glow), transparent 70%);
  pointer-events: none;
}

.card-icon {
  font-size: 26px;
  margin-bottom: 8px;
  filter: var(--glow-card-icon);
  position: relative;
  z-index: 1;
}

.card h3 {
  font-size: var(--font-card-title);
  color: var(--color-primary-pale);
  margin-bottom: 4px;
  position: relative;
  z-index: 1;
  text-shadow: 0 0 8px rgba(212, 175, 55, 0.3);
}

.card p {
  font-size: var(--font-card-desc);
  line-height: 1.5;
  color: var(--text-secondary);
  position: relative;
  z-index: 1;
}

/* ========================================
   全屏弹窗面板
   ======================================== */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  visibility: hidden;
  opacity: 0;
  transition: var(--transition-overlay);
}

.overlay.active {
  visibility: visible;
  opacity: 1;
  transition: var(--transition-overlay-active);
}

.overlay-bg {
  position: absolute;
  inset: 0;
  background: var(--bg-overlay);
  backdrop-filter: blur(22px);
}

.panel {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 480px;
  height: 90vh;
  background: var(--bg-panel);
  border-top: 1px solid var(--border-panel);
  border-radius: var(--radius-panel) var(--radius-panel) 0 0;
  backdrop-filter: blur(24px);
  box-shadow: var(--glow-panel);
  display: flex;
  flex-direction: column;
  transform: translateY(100%);
  transition: var(--transition-panel);
  overflow: hidden;
}

.overlay.active .panel {
  transform: translateY(0);
}

.panel-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px var(--spacing-page-padding);
  border-bottom: 1px solid var(--border-panel-header);
  flex-shrink: 0;
}

.panel-back {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-panel-back);
  background: rgba(212, 175, 55, 0.08);
  border: 1px solid var(--border-logo);
  color: var(--text-logo);
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: .2s;
  flex-shrink: 0;
}

.panel-back:hover {
  background: rgba(212, 175, 55, 0.18);
}

.panel-title {
  font-size: var(--font-panel-title);
  font-weight: 700;
  color: var(--color-primary-pale);
  text-shadow: var(--glow-panel-title);
}

.panel-scroll {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  padding: 16px var(--spacing-page-padding);
  scroll-behavior: smooth;
}

.panel-scroll::-webkit-scrollbar {
  width: 3px;
}
.panel-scroll::-webkit-scrollbar-track {
  background: transparent;
}
.panel-scroll::-webkit-scrollbar-thumb {
  background: var(--border-notice);
  border-radius: 10px;
}

.panel-image {
  display: none;
  width: 100%;
  border-radius: 16px;
  box-shadow: var(--glow-panel-image);
  border: 1px solid rgba(212, 175, 55, 0.2);
}

.panel-image.active {
  display: block;
}

.panel-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  padding: 14px var(--spacing-page-padding) 28px;
  flex-shrink: 0;
  border-top: 1px solid var(--border-panel-header);
}

.tab-btn {
  padding: 10px 6px;
  border-radius: var(--radius-tab);
  font-size: var(--font-tab);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-tab);
  border: 1px solid var(--border-tab);
  background: var(--bg-tab);
  color: var(--text-tab);
  backdrop-filter: blur(8px);
}

.tab-btn:hover {
  border-color: var(--border-tab-hover);
  color: var(--color-primary-light);
  background: rgba(212, 175, 55, 0.1);
}

.tab-btn.active {
  background: linear-gradient(to right, var(--bg-tab-active-start), var(--bg-tab-active-end));
  border-color: transparent;
  color: var(--text-tab-active);
  font-weight: 700;
  box-shadow: var(--glow-tab-active);
}

/* ========================================
   Banner 横幅
   ======================================== */
.banner {
  margin: 24px var(--spacing-page-padding);
  border-radius: var(--radius-banner);
  padding: 28px 22px;
  background: var(--bg-banner);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-banner);
  box-shadow: var(--glow-banner);
}

.banner h2 {
  font-size: var(--font-banner-title);
  margin-bottom: 12px;
  color: var(--color-primary-pale);
  text-shadow: var(--glow-banner-title);
}

.banner p {
  color: var(--text-primary);
  line-height: 1.8;
  font-size: var(--font-banner-text);
  margin-bottom: 0;
  white-space: pre-line;
}

/* ========================================
   底部文本块
   ======================================== */
.text-block {
  margin: 0 var(--spacing-page-padding) 24px;
  padding: 24px var(--spacing-page-padding);
  border-radius: var(--radius-text-block);
  background: var(--bg-text-block);
  border: 1px solid var(--border-text-block);
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 30px rgba(0,0,0,.45);
  color: var(--text-primary);
  font-size: var(--font-text-block-text);
  line-height: 2;
}

.text-block h3 {
  font-size: var(--font-text-block-title);
  color: var(--color-primary-light);
  margin-bottom: 14px;
  text-shadow: 0 0 8px rgba(212, 175, 55, 0.25);
}

.text-block p {
  color: var(--text-primary);
  margin-bottom: 12px;
}

.text-block p:last-child {
  margin-bottom: 0;
}

/* ========================================
   小屏适配
   ======================================== */
@media (max-width: 380px) {
  .hero-title {
    font-size: 32px;
  }
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-section-gap);
  }
  .tab-btn {
    font-size: 11px;
    padding: 8px 4px;
  }
}

/* ========================================
   🔧 后台管理端样式
   ======================================== */
.admin-body {
  background: var(--bg-page);
  color: var(--text-white);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  min-height: 100vh;
  padding: 0;
}

.admin-header {
  background: rgba(20, 20, 20, 0.9);
  border-bottom: 1px solid var(--border-panel);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
}

.admin-header h1 {
  font-size: 18px;
  color: var(--color-primary-light);
  text-shadow: var(--glow-panel-title);
}

.admin-header .back-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  border: 1px solid var(--border-tab);
  padding: 6px 14px;
  border-radius: var(--radius-tab);
  transition: var(--transition-tab);
}
.admin-header .back-link:hover {
  border-color: var(--border-tab-hover);
  color: var(--color-primary-light);
}

/* Tab 导航 */
.tab-nav {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border-panel-header);
  background: rgba(15, 15, 15, 0.8);
  position: sticky;
  top: 57px;
  z-index: 49;
  backdrop-filter: blur(14px);
}
.tab-nav button {
  flex: 1;
  padding: 14px 12px;
  background: transparent;
  border: none;
  color: var(--text-tab);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-tab);
  border-bottom: 2px solid transparent;
  font-family: inherit;
}
.tab-nav button:hover {
  color: var(--color-primary-light);
}
.tab-nav button.active {
  color: var(--color-primary-light);
  border-bottom-color: var(--color-primary);
  text-shadow: var(--glow-panel-title);
}

/* Tab 内容面板 */
.tab-panel {
  display: none;
  padding: 20px;
  max-width: 720px;
  margin: 0 auto;
}
.tab-panel.active {
  display: block;
}

/* 表单样式 */
.form-group {
  margin-bottom: 18px;
}
.form-group label {
  display: block;
  font-size: 13px;
  color: var(--color-primary-pale);
  margin-bottom: 6px;
  font-weight: 600;
}
.form-group input[type="text"],
.form-group input[type="url"],
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--border-tab);
  background: rgba(25, 25, 25, 0.7);
  color: var(--text-white);
  font-size: 14px;
  font-family: inherit;
  transition: 0.2s;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 12px rgba(212, 175, 55, 0.15);
}
.form-group textarea {
  min-height: 80px;
}

/* 颜色选择器 */
.color-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}
.color-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--border-tab);
  background: rgba(25, 25, 25, 0.5);
}
.color-item input[type="color"] {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-logo);
  border-radius: 6px;
  cursor: pointer;
  background: transparent;
  padding: 2px;
  flex-shrink: 0;
}
.color-item .color-label {
  font-size: 12px;
  color: var(--text-secondary);
  flex: 1;
  word-break: break-all;
}
.color-item .color-value {
  font-size: 11px;
  color: var(--text-dim);
  font-family: monospace;
}

/* 颜色分组标题 */
.color-section h4 {
  font-size: 15px;
  color: var(--color-primary-light);
  margin: 22px 0 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-panel-header);
  text-shadow: 0 0 8px rgba(212, 175, 55, 0.2);
}

/* 卡片/分类管理 */
.manage-section {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border-panel-header);
}
.manage-section h3 {
  font-size: 16px;
  color: var(--color-primary-light);
  margin-bottom: 12px;
}
.card-edit-row {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.card-edit-row input {
  flex: 1;
  min-width: 60px;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border-tab);
  background: rgba(25, 25, 25, 0.7);
  color: var(--text-white);
  font-size: 13px;
  font-family: inherit;
}
.card-edit-row input:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* 分类编辑 */
.category-edit {
  margin-bottom: 20px;
  padding: 16px;
  border-radius: 12px;
  border: 1px solid var(--border-card);
  background: rgba(20, 20, 20, 0.4);
}
.category-edit h4 {
  color: var(--color-primary-pale);
  font-size: 14px;
  margin-bottom: 10px;
}
.cat-tabs-row,
.cat-images-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 8px;
}
.cat-tabs-row input,
.cat-images-row input {
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border-tab);
  background: rgba(25, 25, 25, 0.7);
  color: var(--text-white);
  font-size: 12px;
  font-family: inherit;
}
.cat-tabs-row input:focus,
.cat-images-row input:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* 按钮 */
.btn {
  padding: 10px 22px;
  border-radius: 10px;
  border: 1px solid var(--border-tab);
  background: rgba(212, 175, 55, 0.1);
  color: var(--color-primary-light);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-tab);
  font-family: inherit;
  text-shadow: 0 0 6px rgba(212, 175, 55, 0.2);
}
.btn:hover {
  background: rgba(212, 175, 55, 0.2);
  border-color: var(--border-tab-hover);
}
.btn.primary {
  background: linear-gradient(to right, var(--bg-tab-active-start), var(--bg-tab-active-end));
  border-color: transparent;
  color: var(--text-tab-active);
  text-shadow: none;
  font-weight: 700;
}
.btn.primary:hover {
  box-shadow: var(--glow-tab-active);
}
.btn.danger {
  background: rgba(200, 40, 40, 0.15);
  border-color: rgba(200, 40, 40, 0.3);
  color: #e88;
}
.btn.danger:hover {
  background: rgba(200, 40, 40, 0.25);
}
.btn-row {
  display: flex;
  gap: 10px;
  margin-top: 20px;
  flex-wrap: wrap;
}

/* 保存状态提示 */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(10, 10, 10, 0.95);
  border: 1px solid var(--color-primary);
  color: var(--color-primary-light);
  padding: 12px 28px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 600;
  z-index: 200;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
  box-shadow: var(--glow-tab-active);
}
.toast.show {
  opacity: 1;
}
.toast.error {
  border-color: #e88;
  color: #e88;
}