/* 亮色系 · 科技风 · BK-SV 粒子背景风格 */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;700;900&family=Rajdhani:wght@300;400;500;600;700&family=Share+Tech+Mono&display=swap');

:root {
  /* 亮色系科技配色 - 与 BK-SV 风格一致 */
  --tech-blue: #4f46e5;
  --tech-indigo: #6366f1;
  --tech-purple: #7c3aed;
  --tech-pink: #ec4899;
  --tech-cyan: #06b6d4;
  --tech-sky: #0ea5e9;

  /* 亮色背景 */
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.72);
  --bg-glass: rgba(255, 255, 255, 0.60);
  --bg-input: #f8fafc;

  /* 边框 */
  --border-light: rgba(79, 70, 229, 0.12);
  --border-glow: rgba(99, 102, 241, 0.25);
  --border-subtle: rgba(148, 163, 184, 0.2);

  --text-primary: #1e293b;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-bright: #0f172a;

  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;

  --radius: 16px;
  --radius-sm: 10px;
  --shadow-card: 0 4px 20px rgba(0, 20, 80, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-card-hover: 0 8px 30px rgba(79, 70, 229, 0.1), 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.15);

  --blur: blur(24px) saturate(1.6);
  --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Rajdhani', 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  line-height: 1.6;
  font-weight: 500;
}

/* ========== 动态科技粒子背景 (BK-SV风格) ========== */
#tech-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  pointer-events: none;
}

/* 亮色渐变叠加 - mesh-bg 风格 */
.page-bg {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% -10%, rgba(79, 70, 229, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(236, 72, 153, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse 50% 60% at 50% 100%, rgba(124, 58, 237, 0.06) 0%, transparent 50%);
  z-index: -1;
  pointer-events: none;
  animation: gradientShift 18s ease infinite;
  background-size: 200% 200%;
}

/* 背景装饰光晕 - 与 BK-SV 一致 */
.bg-glow-1 {
  position: fixed;
  top: 6rem;
  left: 10%;
  width: 18rem;
  height: 18rem;
  border-radius: 50%;
  background: rgba(79, 70, 229, 0.12);
  filter: blur(80px);
  pointer-events: none;
  z-index: -1;
  animation: pulseGlow 6s ease-in-out infinite;
}

.bg-glow-2 {
  position: fixed;
  bottom: 5rem;
  right: 8%;
  width: 24rem;
  height: 24rem;
  border-radius: 50%;
  background: rgba(236, 72, 153, 0.1);
  filter: blur(80px);
  pointer-events: none;
  z-index: -1;
  animation: pulseGlow 8s ease-in-out infinite;
  animation-delay: -2s;
}

.bg-glow-3 {
  position: fixed;
  top: 50%;
  left: 33%;
  width: 20rem;
  height: 20rem;
  border-radius: 50%;
  background: rgba(124, 58, 237, 0.08);
  filter: blur(80px);
  pointer-events: none;
  z-index: -1;
  animation: pulseGlow 7s ease-in-out infinite;
  animation-delay: -4s;
}

/* 动画定义 */
@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

@keyframes pulseGlow {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.05); }
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  33% { transform: translateY(-20px) rotate(1deg); }
  66% { transform: translateY(10px) rotate(-1deg); }
}

/* ========== 科技风格标题字体 ========== */
.tech-title {
  font-family: 'Orbitron', 'Impact', sans-serif;
  font-weight: 900;
  letter-spacing: 4px;
  color: var(--text-bright);
  position: relative;
  text-transform: uppercase;
}

.tech-title::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--tech-cyan), var(--tech-blue));
  border-radius: 2px;
}

.tech-title-center::after {
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
}

/* 科技副标题 */
.tech-subtitle {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--tech-cyan);
  text-transform: uppercase;
  font-size: 14px;
}

/* 等宽字体标签 */
.mono-label {
  font-family: 'Share Tech Mono', 'Courier New', monospace;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--tech-cyan);
}

/* ========== 拟态毛玻璃卡片 ========== */
.glass-card {
  background: var(--bg-glass);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(79, 70, 229, 0.04), transparent);
  transition: left 0.6s ease;
}

.glass-card:hover::before {
  left: 100%;
}

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

/* 卡片角标 */
.glass-card::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, transparent 50%, rgba(99, 102, 241, 0.08) 50%);
  border-radius: 0 0 0 50px;
  pointer-events: none;
}

/* ========== 科技导航 ========== */
.glass-nav {
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(30px) saturate(1.8);
  -webkit-backdrop-filter: blur(30px) saturate(1.8);
  border-bottom: 1px solid var(--border-subtle);
  padding: 16px 20px;
  position: sticky;
  top: 0;
  z-index: 99;
  box-shadow: 0 2px 20px rgba(0, 20, 80, 0.04);
}

.nav-wrap {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.nav-wrap a {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-family: 'Orbitron', sans-serif;
  font-size: 12px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  transition: var(--transition);
  position: relative;
  border: 1px solid transparent;
}

.nav-wrap a:hover {
  color: var(--tech-blue);
  border-color: var(--border-glow);
  background: rgba(79, 70, 229, 0.04);
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.08);
}

/* ========== 科技按钮系统 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: var(--radius-sm);
  padding: 13px 22px;
  font-size: 14px;
  font-weight: 700;
  font-family: 'Orbitron', sans-serif;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.25), transparent);
  transition: left 0.5s ease;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--tech-blue), var(--tech-indigo));
  color: #fff;
  box-shadow: 0 4px 16px rgba(79, 70, 229, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(79, 70, 229, 0.35);
}

.btn-secondary {
  background: rgba(79, 70, 229, 0.08);
  color: var(--tech-blue);
  border: 1px solid var(--border-glow);
}

.btn-secondary:hover {
  background: rgba(79, 70, 229, 0.15);
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.12);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.08);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.15);
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.15);
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.12);
}

.btn-success {
  background: rgba(16, 185, 129, 0.08);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.15);
}

.btn-success:hover {
  background: rgba(16, 185, 129, 0.15);
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.12);
}

.btn-sm {
  padding: 8px 14px;
  font-size: 12px;
  border-radius: 8px;
}

/* ========== 科技表单 ========== */
input, select, textarea {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-size: 15px;
  font-family: 'Rajdhani', sans-serif;
  font-weight: 500;
  color: var(--text-primary);
  transition: var(--transition);
  outline: none;
}

input::placeholder, textarea::placeholder {
  color: var(--text-muted);
  font-weight: 400;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--tech-cyan);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1), 0 0 20px rgba(99, 102, 241, 0.08);
  background: #fff;
}

textarea {
  resize: vertical;
  min-height: 120px;
  font-family: 'Share Tech Mono', monospace;
  font-size: 13px;
}

/* ========== 布局系统 ========== */
.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 30px 20px;
}

.center-page {
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: 20px;
}

.w-400 { max-width: 400px; width: 100%; }
.w-full { width: 100%; }
.text-center { text-align: center; }

/* 间距 */
.mt-10 { margin-top: 10px; }
.mt-15 { margin-top: 15px; }
.mt-20 { margin-top: 20px; }
.mb-10 { margin-bottom: 10px; }
.mb-15 { margin-bottom: 15px; }
.mb-20 { margin-bottom: 20px; }
.mb-25 { margin-bottom: 25px; }
.gap-10 { gap: 10px; }
.gap-15 { gap: 15px; }
.flex { display: flex; align-items: center; }
.flex-col { display: flex; flex-direction: column; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.flex-wrap { flex-wrap: wrap; }

/* ========== 科技提示框 ========== */
.alert {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  font-weight: 600;
  font-family: 'Share Tech Mono', monospace;
  font-size: 13px;
  backdrop-filter: blur(10px);
  border-left: 3px solid;
  position: relative;
}

.alert-success {
  background: rgba(16, 185, 129, 0.08);
  color: #047857;
  border-color: var(--success);
}

.alert-error {
  background: rgba(239, 68, 68, 0.08);
  color: #b91c1c;
  border-color: var(--danger);
}

/* ========== 科技表格 ========== */
.table-box {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-subtle);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-family: 'Rajdhani', sans-serif;
  font-size: 14px;
}

th, td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
}

th {
  background: rgba(79, 70, 229, 0.04);
  color: var(--tech-blue);
  font-weight: 700;
  font-family: 'Orbitron', sans-serif;
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

tr:hover td {
  background: rgba(99, 102, 241, 0.02);
}

tr:last-child td {
  border-bottom: none;
}

/* ========== 统计卡片 ========== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--tech-cyan), var(--tech-blue));
}

.stat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--border-glow);
}

.stat-card h3 {
  font-size: 28px;
  margin: 8px 0;
  color: var(--tech-blue);
  font-family: 'Orbitron', sans-serif;
  font-weight: 900;
}

.stat-card p {
  color: var(--text-muted);
  font-size: 11px;
  font-family: 'Orbitron', sans-serif;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

/* ========== 订阅链接 ========== */
.sub-row {
  display: flex;
  gap: 12px;
  align-items: center;
  margin: 16px 0;
}

.sub-input {
  flex: 1;
  background: rgba(255, 255, 255, 0.9) !important;
  border: 1px solid var(--border-glow) !important;
  color: var(--tech-blue) !important;
  font-family: 'Share Tech Mono', monospace !important;
  font-size: 13px !important;
}

.sub-input:focus {
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1), 0 0 25px rgba(99, 102, 241, 0.1) !important;
}

/* ========== 浮动动画 ========== */
.float {
  animation: float 6s ease-in-out infinite;
}

/* ========== 标签/徽章 ========== */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 10px;
  font-family: 'Orbitron', sans-serif;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-weight: 600;
}

.badge-success {
  background: rgba(16, 185, 129, 0.12);
  color: #047857;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge-danger {
  background: rgba(239, 68, 68, 0.12);
  color: #b91c1c;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

/* ========== 分割线 ========== */
.tech-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--tech-cyan), var(--tech-blue), transparent);
  margin: 20px 0;
  opacity: 0.4;
}

/* ========== 响应式 ========== */
@media (max-width: 640px) {
  .stats-grid { grid-template-columns: 1fr; }
  .sub-row { flex-direction: column; align-items: stretch; }
  .nav-wrap a { padding: 8px 10px; font-size: 11px; }
  .glass-card { padding: 20px; }
  .tech-title { font-size: 24px !important; letter-spacing: 2px; }
  .tech-subtitle { font-size: 12px !important; }
  .bg-glow-1, .bg-glow-2, .bg-glow-3 { display: none; }
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--tech-cyan), var(--tech-blue));
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--tech-blue), var(--tech-purple));
}