/* ============================================================
   Theme Design System — 参考 dist (Vue/Tailwind) 现代赛博风格
   配色: 深色主背景 + 霓虹青/紫渐变 + 玻璃态 + 粒子光晕
   ============================================================ */

:root {
  --color-primary: #0a0a1a;
  --color-primary-light: #1a1a2e;
  --color-accent-cyan: #00f5d4;
  --color-accent-purple: #7b2cbf;
  --color-accent-coral: #ff6b6b;
  --color-accent-gold: #ffd93d;
  --color-text: #ffffff;
  --color-text-muted: #9ca3af;
  --color-border: rgba(255, 255, 255, 0.1);
  --color-border-strong: rgba(255, 255, 255, 0.2);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  min-height: 100%;
  overflow-x: hidden;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
    'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  background-color: var(--color-primary);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, select, textarea { font-family: inherit; }

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: rgba(26, 26, 46, 0.5); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--color-accent-cyan), var(--color-accent-purple));
  border-radius: 3px;
}

/* ============================================================
   背景层：粒子星空 + 径向光晕 + 网格
   ============================================================ */
.theme-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse at 20% 10%, rgba(0, 245, 212, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 90%, rgba(123, 44, 191, 0.10) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(10, 10, 26, 1) 0%, #050510 100%);
  pointer-events: none;
}

.theme-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 245, 212, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 245, 212, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.6), transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.6), transparent 70%);
}

.starfield {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.6), transparent),
    radial-gradient(1px 1px at 30% 70%, rgba(0, 245, 212, 0.5), transparent),
    radial-gradient(1.5px 1.5px at 60% 40%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 80% 80%, rgba(123, 44, 191, 0.5), transparent),
    radial-gradient(1px 1px at 90% 10%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1px 1px at 45% 90%, rgba(0, 245, 212, 0.4), transparent),
    radial-gradient(1px 1px at 20% 50%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1.5px 1.5px at 70% 25%, rgba(123, 44, 191, 0.4), transparent);
  background-size: 800px 800px;
  animation: starfield-drift 120s linear infinite;
}

@keyframes starfield-drift {
  from { background-position: 0 0; }
  to   { background-position: -800px -800px; }
}

/* ============================================================
   玻璃态 / 霓虹边框 / 文字效果
   ============================================================ */
.glass {
  background: rgba(26, 26, 46, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 245, 212, 0.1);
}

.glass-strong {
  background: rgba(26, 26, 46, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(0, 245, 212, 0.2);
}

.glass-card {
  background: linear-gradient(135deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
  border: 1px solid var(--color-border);
  border-radius: 16px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-card:hover {
  transform: translateY(-6px) scale(1.015);
  border-color: rgba(0, 245, 212, 0.3);
  box-shadow: 0 20px 40px rgba(0, 245, 212, 0.12);
}

.neon-border {
  border: 1px solid var(--color-accent-cyan);
  box-shadow:
    0 0 10px rgba(0, 245, 212, 0.3),
    inset 0 0 10px rgba(0, 245, 212, 0.1);
}

.neon-border-purple {
  border: 1px solid var(--color-accent-purple);
  box-shadow:
    0 0 10px rgba(123, 44, 191, 0.3),
    inset 0 0 10px rgba(123, 44, 191, 0.1);
}

.neon-text {
  text-shadow:
    0 0 8px var(--color-accent-cyan),
    0 0 16px var(--color-accent-cyan),
    0 0 24px var(--color-accent-cyan);
}

.neon-text-purple {
  text-shadow:
    0 0 8px var(--color-accent-purple),
    0 0 18px var(--color-accent-purple);
}

.gradient-text {
  background: linear-gradient(90deg, var(--color-accent-cyan), var(--color-accent-purple));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.gradient-text-animate {
  background: linear-gradient(90deg, var(--color-accent-cyan), var(--color-accent-cyan), var(--color-text), var(--color-accent-purple));
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  animation: gradient-shift 8s ease infinite;
}

/* ============================================================
   按钮
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 12px;
  font-weight: 500;
  font-size: 14px;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-purple));
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(0, 245, 212, 0.25);
}

.btn-primary:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 30px rgba(0, 245, 212, 0.45), 0 0 40px rgba(123, 44, 191, 0.25);
}

.btn-primary::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.25), transparent);
  transform: translateX(-100%);
  transition: transform 0.7s ease;
}
.btn-primary:hover::after { transform: translateX(100%); }

.btn-outline {
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.03);
}
.btn-outline:hover {
  border-color: var(--color-accent-cyan);
  color: var(--color-accent-cyan);
  background: rgba(0, 245, 212, 0.08);
  box-shadow: 0 0 20px rgba(0, 245, 212, 0.15);
}

.btn-ghost {
  color: var(--color-text-muted);
}
.btn-ghost:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.05);
}

.btn-danger {
  color: #f87171;
}
.btn-danger:hover {
  background: rgba(239, 68, 68, 0.1);
}

/* ============================================================
   表单
   ============================================================ */
.form-label {
  display: block;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 8px;
  font-weight: 500;
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: 14px;
  transition: all 0.2s ease;
  outline: none;
}
.form-input::placeholder { color: rgba(156, 163, 175, 0.6); }

.form-input:focus {
  border-color: rgba(0, 245, 212, 0.5);
  background: rgba(0, 245, 212, 0.03);
  box-shadow: 0 0 0 3px rgba(0, 245, 212, 0.1), 0 0 15px rgba(0, 245, 212, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2300f5d4' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
  cursor: pointer;
}

.form-group { margin-bottom: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .form-row { grid-template-columns: 1fr; } }

/* ============================================================
   徽章 / 标签
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--color-text-muted);
}

.badge-cyan {
  color: var(--color-accent-cyan);
  background: rgba(0, 245, 212, 0.1);
  border-color: rgba(0, 245, 212, 0.2);
}

.badge-purple {
  color: #c4a1ff;
  background: rgba(123, 44, 191, 0.12);
  border-color: rgba(123, 44, 191, 0.25);
}

.badge-coral {
  color: #ffa3a3;
  background: rgba(255, 107, 107, 0.1);
  border-color: rgba(255, 107, 107, 0.2);
}

.badge-gold {
  color: var(--color-accent-gold);
  background: rgba(255, 217, 61, 0.1);
  border-color: rgba(255, 217, 61, 0.2);
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--color-text-muted);
  display: inline-block;
}
.dot-green { background: #4ade80; box-shadow: 0 0 8px #4ade80; animation: pulse-dot 2s ease infinite; }
.dot-red   { background: #ff6b6b; box-shadow: 0 0 8px #ff6b6b; }
.dot-cyan  { background: var(--color-accent-cyan); box-shadow: 0 0 8px var(--color-accent-cyan); animation: pulse-dot 2s ease infinite; }

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.25); }
}

/* ============================================================
   动画
   ============================================================ */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-16px); }
}
@keyframes float-slow {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-26px) rotate(2deg); }
}
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 8px currentColor; }
  50% { box-shadow: 0 0 24px currentColor, 0 0 40px currentColor; }
}
@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}
@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
@keyframes fade-up {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes scale-in {
  from { opacity: 0; transform: scale(0.92); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes slide-in-right {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes audio-wave {
  0%, 100% { transform: scaleY(0.3); }
  50% { transform: scaleY(1); }
}

.animate-float       { animation: float 6s ease-in-out infinite; }
.animate-float-slow  { animation: float-slow 8s ease-in-out infinite; }
.animate-pulse-glow  { animation: pulse-glow 2.2s ease-in-out infinite; }
.animate-shimmer {
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.18), transparent);
  background-size: 200% 100%;
  animation: shimmer 2.4s infinite;
}

.fade-up    { opacity: 0; animation: fade-up 0.6s ease forwards; }
.fade-in    { opacity: 0; animation: fade-in 0.6s ease forwards; }
.scale-in   { opacity: 0; animation: scale-in 0.35s ease forwards; }
.delay-100  { animation-delay: 0.1s; }
.delay-200  { animation-delay: 0.2s; }
.delay-300  { animation-delay: 0.3s; }
.delay-400  { animation-delay: 0.4s; }
.delay-500  { animation-delay: 0.5s; }
.delay-700  { animation-delay: 0.7s; }

/* ============================================================
   布局容器
   ============================================================ */
.app-wrap {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  width: 100%;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.container-lg {
  max-width: 1400px;
}

/* ============================================================
   导航栏 (首页/通用)
   ============================================================ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(10, 10, 26, 0.55);
  border-bottom: 1px solid var(--color-border);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-purple));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 18px;
  font-weight: 700;
  box-shadow: 0 6px 20px rgba(0, 245, 212, 0.25);
}

.brand-text {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.navbar-links a {
  position: relative;
  font-size: 14px;
  color: var(--color-text-muted);
  transition: color 0.2s ease;
}
.navbar-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent-cyan), var(--color-accent-purple));
  transition: width 0.3s ease;
  border-radius: 2px;
}
.navbar-links a:hover { color: var(--color-text); }
.navbar-links a:hover::after { width: 100%; }

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-left: 24px;
  margin-left: 24px;
  border-left: 1px solid var(--color-border);
}

@media (max-width: 860px) {
  .navbar-links { display: none; }
  .navbar { padding: 14px 20px; }
}

/* ============================================================
   Hero 区（首页）
   ============================================================ */
.hero {
  padding: 96px 24px 120px;
  text-align: center;
  position: relative;
}

.hero-badges {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 12px 22px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  margin-bottom: 36px;
  font-size: 12px;
  color: var(--color-text-muted);
}
.hero-badges .sep { width: 1px; height: 12px; background: var(--color-border); }

.hero-title {
  font-size: clamp(38px, 6vw, 68px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: clamp(15px, 1.6vw, 18px);
  color: var(--color-text-muted);
  max-width: 720px;
  margin: 0 auto 32px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 44px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin-bottom: 72px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 720px;
  margin: 0 auto;
}

@media (max-width: 640px) {
  .hero { padding: 56px 16px 80px; }
  .hero-stats { grid-template-columns: 1fr; gap: 14px; }
}

.stat-card {
  padding: 24px;
  border-radius: 16px;
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--color-accent-cyan), var(--color-accent-purple));
  opacity: 0;
  transition: opacity 0.3s ease;
}
.stat-card:hover::before { opacity: 1; }
.stat-value {
  font-size: 30px;
  font-weight: 800;
  color: var(--color-accent-cyan);
  margin-bottom: 6px;
}
.stat-label {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* ============================================================
   Section 通用
   ============================================================ */
.section {
  padding: 80px 24px;
  position: relative;
  z-index: 1;
}
.section-head {
  text-align: center;
  margin-bottom: 56px;
}
.section-tag {
  display: inline-flex;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 12px;
  letter-spacing: 0.12em;
  margin-bottom: 18px;
}
.section-title {
  font-size: clamp(26px, 3.5vw, 38px);
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* ============================================================
   能力卡片网格
   ============================================================ */
.grid-caps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
}
.cap-card {
  padding: 28px;
}
.cap-icon {
  font-size: 36px;
  margin-bottom: 14px;
  display: block;
}
.cap-subtitle {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--color-accent-purple);
  margin-bottom: 6px;
  font-weight: 600;
  opacity: 0.85;
}
.cap-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.cap-desc {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ============================================================
   Agents 卡片
   ============================================================ */
.grid-agents {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
  max-width: 1200px;
  margin: 0 auto;
}
.agent-card {
  padding: 28px;
  text-align: center;
}
.agent-avatar {
  width: 76px;
  height: 76px;
  margin: 0 auto 18px;
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(0, 245, 212, 0.15), rgba(123, 44, 191, 0.15));
  border: 1px solid rgba(0, 245, 212, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 38px;
  transition: transform 0.4s ease;
}
.agent-card:hover .agent-avatar {
  transform: scale(1.08) rotate(-3deg);
  box-shadow: 0 10px 30px rgba(0, 245, 212, 0.2);
}
.agent-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}
.agent-role {
  font-size: 12px;
  color: var(--color-accent-cyan);
  margin-bottom: 12px;
  font-weight: 500;
}
.agent-desc {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 18px;
}

/* ============================================================
   登录页
   ============================================================ */
.auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  position: relative;
  z-index: 1;
}
.auth-card {
  width: 100%;
  max-width: 440px;
  padding: 40px;
  border-radius: 20px;
}
.auth-logo {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-purple));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  box-shadow: 0 10px 30px rgba(0, 245, 212, 0.3);
}
.auth-title {
  font-size: 24px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 6px;
}
.auth-subtitle {
  font-size: 13px;
  color: var(--color-text-muted);
  text-align: center;
  margin-bottom: 32px;
}

.auth-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  padding: 4px;
  border-radius: 12px;
  margin-bottom: 28px;
}
.auth-tab {
  padding: 10px 12px;
  border-radius: 9px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-muted);
  text-align: center;
  transition: all 0.2s ease;
}
.auth-tab.active {
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-purple));
  color: #fff;
  box-shadow: 0 4px 14px rgba(0, 245, 212, 0.25);
}

.auth-error {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 10px;
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: #fca5a5;
  font-size: 13px;
  margin-bottom: 18px;
}

.password-wrap { position: relative; }
.password-toggle {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 4px;
  transition: color 0.2s;
}
.password-toggle:hover { color: var(--color-accent-cyan); }

.auth-footer {
  text-align: center;
  margin-top: 24px;
  font-size: 13px;
  color: var(--color-text-muted);
}
.auth-footer a {
  color: var(--color-accent-cyan);
  font-weight: 500;
}
.auth-footer a:hover { text-decoration: underline; }

/* ============================================================
   后台布局：侧边栏 + 主内容
   ============================================================ */
.admin-layout {
  min-height: 100vh;
  display: flex;
  position: relative;
  z-index: 1;
}

.admin-sidebar {
  width: 224px;
  flex-shrink: 0;
  background: rgba(15, 15, 35, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  transition: width 0.3s ease;
}
.admin-sidebar.collapsed { width: 72px; }

.admin-brand {
  padding: 18px 16px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 12px;
}
.admin-brand .brand-icon { width: 36px; height: 36px; border-radius: 10px; font-size: 16px; flex-shrink: 0; }
.admin-brand-text { display: flex; flex-direction: column; }
.admin-brand-text strong { font-size: 15px; font-weight: 700; }
.admin-brand-text span { font-size: 11px; color: var(--color-text-muted); }
.admin-sidebar.collapsed .admin-brand-text { display: none; }

.admin-menu {
  list-style: none;
  padding: 14px 10px;
  flex: 1;
}
.admin-menu-item { margin-bottom: 4px; }
.admin-menu-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: 12px;
  color: var(--color-text-muted);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
  cursor: pointer;
}
.admin-menu-link:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
}
.admin-menu-link.active {
  background: rgba(0, 245, 212, 0.15);
  color: var(--color-accent-cyan);
  border: 1px solid rgba(0, 245, 212, 0.25);
  box-shadow: 0 0 16px rgba(0, 245, 212, 0.08);
}
.admin-menu-link.active::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 28px;
  background: var(--color-accent-cyan);
  border-radius: 0 3px 3px 0;
  box-shadow: 0 0 8px var(--color-accent-cyan);
}
.admin-menu-link .menu-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.admin-sidebar.collapsed .admin-menu-link span.menu-text { display: none; }
.admin-sidebar.collapsed .admin-menu-link { justify-content: center; padding: 11px; }

.admin-sidebar-footer {
  padding: 12px 10px;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.admin-sidebar.collapsed .admin-sidebar-footer .sidebar-collapse { justify-content: center; }
.sidebar-collapse {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--color-text-muted);
  font-size: 13px;
  transition: all 0.2s ease;
  cursor: pointer;
}
.sidebar-collapse:hover { background: rgba(255, 255, 255, 0.05); color: #fff; }

.admin-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.admin-header {
  position: sticky;
  top: 0;
  z-index: 10;
  padding: 16px 32px;
  background: rgba(10, 10, 26, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.admin-header-title { font-size: 18px; font-weight: 700; }
.admin-user-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 10px 6px 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 13px;
}
.admin-user-avatar {
  width: 30px;
  height: 30px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(0, 245, 212, 0.25), rgba(123, 44, 191, 0.25));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent-cyan);
}

.admin-content {
  flex: 1;
  padding: 32px;
}

@media (max-width: 900px) {
  .admin-sidebar { width: 72px; }
  .admin-brand-text, .admin-menu-link span.menu-text { display: none; }
  .admin-menu-link { justify-content: center; padding: 11px; }
  .admin-header { padding: 14px 20px; }
  .admin-content { padding: 20px; }
}

/* ============================================================
   后台组件：统计卡 / 表格 / 面板
   ============================================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-bottom: 28px;
}
.stat-box {
  padding: 22px;
  border-radius: 14px;
  position: relative;
  overflow: hidden;
}
.stat-box::after {
  content: "";
  position: absolute;
  right: -20px; top: -20px;
  width: 100px; height: 100px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(0, 245, 212, 0.15), transparent 70%);
}
.stat-box-label {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.stat-box-value {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #fff, var(--color-accent-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.stat-box-delta {
  font-size: 12px;
  margin-top: 8px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.stat-box-delta.up   { color: #4ade80; }
.stat-box-delta.down { color: #f87171; }

.panel {
  border-radius: 14px;
  margin-bottom: 22px;
  overflow: hidden;
}
.panel-head {
  padding: 16px 22px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.panel-title {
  font-size: 15px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}
.panel-actions { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.panel-body { padding: 20px 22px; }

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.data-table thead th {
  text-align: left;
  padding: 12px 16px;
  font-weight: 600;
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--color-border);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.data-table tbody td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  vertical-align: middle;
}
.data-table tbody tr:hover { background: rgba(0, 245, 212, 0.03); }
.data-table .row-actions {
  display: flex;
  gap: 6px;
}
.icon-btn {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  transition: all 0.2s ease;
}
.icon-btn:hover {
  color: var(--color-accent-cyan);
  border-color: rgba(0, 245, 212, 0.3);
  background: rgba(0, 245, 212, 0.06);
}
.icon-btn.danger:hover {
  color: #f87171;
  border-color: rgba(239, 68, 68, 0.3);
  background: rgba(239, 68, 68, 0.06);
}

.search-input {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  transition: all 0.2s ease;
  min-width: 220px;
}
.search-input:focus-within {
  border-color: rgba(0, 245, 212, 0.4);
  box-shadow: 0 0 0 3px rgba(0, 245, 212, 0.08);
}
.search-input input {
  border: none;
  background: transparent;
  outline: none;
  color: var(--color-text);
  font-size: 13px;
  flex: 1;
  min-width: 0;
}
.search-input svg { color: var(--color-text-muted); flex-shrink: 0; }

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  padding: 40px 24px;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 13px;
  text-align: center;
  position: relative;
  z-index: 1;
}
.site-footer a { color: var(--color-accent-cyan); }

/* ============================================================
   工具类
   ============================================================ */
.text-center { text-align: center; }
.text-muted  { color: var(--color-text-muted); }
.text-white  { color: var(--color-text); }
.text-cyan   { color: var(--color-accent-cyan); }
.text-purple { color: #c084fc; }
.text-coral  { color: #f87171; }
.text-gold   { color: var(--color-accent-gold); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.gap-6 { gap: 24px; }

.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }

.w-full { width: 100%; }
.hidden { display: none; }

.block { display: block; }
.inline-block { display: inline-block; }

/* 管理后台视图的显隐由 admin.js 通过 HTML hidden 属性控制
   （配合 admin.css 的 [hidden] { display:none !important }），
   不再使用 .active 类切换，避免与 hidden 属性冲突导致面板不可见。 */