/* ===== API Radar 科技风设计系统 ===== */
:root {
  /* 主色 - 赛博朋克紫青蓝 */
  --bg-base: #050714;
  --bg-deep: #0a0e1f;
  --bg-card: rgba(15, 22, 41, 0.72);
  --bg-card-hover: rgba(22, 32, 58, 0.88);
  --bg-glass: rgba(20, 30, 55, 0.55);

  /* 边框 - 玻璃边框 */
  --border: rgba(120, 160, 255, 0.12);
  --border-hover: rgba(120, 220, 255, 0.35);
  --border-strong: rgba(140, 200, 255, 0.5);

  /* 文字 */
  --fg: #e6edff;
  --fg-strong: #ffffff;
  --muted: #8896b8;
  --muted-foreground: #6b7896;

  /* 强调色 */
  --accent: #00d9ff;          /* 主青 */
  --accent-2: #b066ff;        /* 紫 */
  --accent-3: #ff6b9d;        /* 粉红（用于高亮/对比） */
  --success: #00ffa3;
  --warning: #ffb84d;
  --danger: #ff4757;

  /* 渐变 */
  --grad-primary: linear-gradient(135deg, #00d9ff 0%, #b066ff 50%, #ff6b9d 100%);
  --grad-card: linear-gradient(135deg, rgba(0,217,255,0.08) 0%, rgba(176,107,255,0.05) 100%);
  --grad-glow: linear-gradient(135deg, rgba(0,217,255,0.18) 0%, rgba(176,107,255,0.12) 100%);

  /* 阴影 / 光晕 */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.4), 0 0 0 1px rgba(120,160,255,0.06);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.55), 0 0 32px rgba(0,217,255,0.08);
  --glow-cyan: 0 0 24px rgba(0,217,255,0.4);
  --glow-purple: 0 0 24px rgba(176,107,255,0.4);

  /* 字体 */
  --font-sans: 'Inter', -apple-system, 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', ui-monospace, 'Cascadia Code', Consolas, monospace;

  /* 圆角 */
  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
}

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

html, body {
  background: var(--bg-base);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  background:
    radial-gradient(ellipse 80% 50% at 20% 0%, rgba(0,217,255,0.08), transparent 50%),
    radial-gradient(ellipse 60% 40% at 80% 20%, rgba(176,107,255,0.10), transparent 50%),
    radial-gradient(ellipse 60% 40% at 50% 80%, rgba(255,107,157,0.05), transparent 50%),
    var(--bg-base);
  min-height: 100vh;
  overflow-x: hidden;
}

/* 背景点阵网格 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(120,160,255,0.08) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: 0;
}

a { color: var(--accent); text-decoration: none; transition: color 0.15s; }
a:hover { color: var(--accent-2); }

button { cursor: pointer; border: 0; background: transparent; color: inherit; font: inherit; }

input, select, textarea {
  font: inherit;
  color: var(--fg);
  background: rgba(10,16,32,0.6);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,217,255,0.15);
}

/* ===== 顶部导航栏 ===== */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(5,7,15,0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
}
.brand-logo {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--grad-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #001428;
  font-size: 16px;
  box-shadow: var(--glow-cyan);
}
.brand-text {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.brand-sub {
  font-size: 11px;
  color: var(--muted);
  font-weight: 400;
  margin-left: 4px;
}
.nav {
  display: flex;
  gap: 6px;
  margin-left: auto;
}
.nav a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
  transition: all 0.15s;
}
.nav a:hover, .nav a.active {
  background: rgba(0,217,255,0.08);
  color: var(--fg);
}

/* ===== 主容器 ===== */
.main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 32px 24px 80px;
  position: relative;
  z-index: 1;
}

/* ===== 通用卡片（玻璃拟态） ===== */
.card, .glass {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: all 0.2s;
}
.card-hover:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.glass-strong {
  background: rgba(15,22,41,0.85);
  border-color: var(--border-strong);
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: 0;
  transition: all 0.15s;
}
.btn-primary {
  background: var(--grad-primary);
  color: #001428;
  font-weight: 700;
  box-shadow: var(--glow-cyan);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 36px rgba(0,217,255,0.55);
}
.btn-ghost {
  background: rgba(120,160,255,0.06);
  color: var(--fg);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  background: rgba(0,217,255,0.08);
  border-color: var(--border-hover);
}

/* ===== 标签 ===== */
.tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 500;
  background: rgba(120,160,255,0.10);
  color: var(--fg);
  border: 1px solid var(--border);
}
.tag-accent { background: rgba(0,217,255,0.12); color: var(--accent); border-color: rgba(0,217,255,0.3); }
.tag-purple { background: rgba(176,107,255,0.12); color: var(--accent-2); border-color: rgba(176,107,255,0.3); }
.tag-success { background: rgba(0,255,163,0.12); color: var(--success); border-color: rgba(0,255,163,0.3); }
.tag-warning { background: rgba(255,184,77,0.12); color: var(--warning); border-color: rgba(255,184,77,0.3); }
.tag-danger { background: rgba(255,71,87,0.12); color: var(--danger); border-color: rgba(255,71,87,0.3); }

/* ===== 标题 ===== */
h1, h2, h3, h4 { font-weight: 700; letter-spacing: -0.02em; }
h1 { font-size: 32px; line-height: 1.2; margin-bottom: 8px; }
h2 { font-size: 22px; line-height: 1.3; margin-bottom: 12px; }
h3 { font-size: 16px; line-height: 1.4; margin-bottom: 8px; color: var(--fg); }
h4 { font-size: 14px; margin-bottom: 6px; color: var(--muted); font-weight: 600; }

a { color: var(--accent); }
p { color: var(--fg); }

/* ===== 等宽数字 / 价格 ===== */
.mono, .price, .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}
.price-big {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ===== 输入控件增强 ===== */
.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.input-group label {
  font-size: 12px;
  color: var(--muted);
  font-weight: 500;
}

/* ===== 工具类 ===== */
.muted { color: var(--muted); }
.dim { color: var(--muted-foreground); }
.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.gap-6 { gap: 24px; }
.between { justify-content: space-between; }
.center { justify-content: center; align-items: center; }
.items-center { align-items: center; }
.text-right { text-align: right; }
.text-sm { font-size: 12px; }
.text-xs { font-size: 11px; }
.font-bold { font-weight: 700; }
.font-semi { font-weight: 600; }
.w-full { width: 100%; }

/* ===== 表格 ===== */
table { width: 100%; border-collapse: collapse; }
th, td {
  text-align: left;
  padding: 12px 14px;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
}
th {
  font-weight: 600;
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
tbody tr:hover { background: rgba(0,217,255,0.04); }

/* ===== 渐变文字标题 ===== */
.gradient-text {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: rgba(120,160,255,0.15); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0,217,255,0.3); }

/* ===== 选中状态 ===== */
::selection { background: rgba(0,217,255,0.3); color: #fff; }

/* ===== 微动效 ===== */
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 16px rgba(0,217,255,0.4); }
  50% { box-shadow: 0 0 32px rgba(0,217,255,0.7); }
}
.pulse { animation: pulse-glow 2s ease-in-out infinite; }

@keyframes fade-in-up {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in { animation: fade-in-up 0.4s ease-out; }

/* ===== 空状态 ===== */
.empty-state {
  text-align: center;
  padding: 60px 24px;
  color: var(--muted);
}
.empty-state-icon { font-size: 48px; opacity: 0.4; margin-bottom: 16px; }
/* ===== 页面通用 page-hero（所有页面一致） ===== */
.page-hero { padding: 48px 0 24px; text-align: center; position: relative; }
.page-hero-tagline { display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: 999px; background: rgba(0,217,255,0.08); border: 1px solid rgba(0,217,255,0.2); color: var(--accent); font-size: 12px; font-weight: 600; margin-bottom: 16px; }
.page-hero-tagline-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: var(--glow-cyan); animation: pulse-glow 2s infinite; }
.page-hero h1 { font-size: 42px; line-height: 1.1; margin-bottom: 12px; font-weight: 800; }
.page-hero .subtitle { color: var(--muted); font-size: 15px; max-width: 640px; margin: 0 auto; }

/* ===== 全站网格背景动画（首页有 hero-tagline 的也用） ===== */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    linear-gradient(rgba(120,160,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,160,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: -1;
  mask-image: radial-gradient(circle at 50% 30%, rgba(0,0,0,0.6) 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, rgba(0,0,0,0.6) 0%, transparent 70%);
}

/* 渐变光斑 */
body::after {
  content: '';
  position: fixed;
  top: -20%; left: -20%;
  width: 60vw; height: 60vw;
  background: radial-gradient(circle, rgba(0,217,255,0.08) 0%, transparent 60%);
  pointer-events: none;
  z-index: -1;
  animation: float-glow 20s ease-in-out infinite;
}
@keyframes float-glow {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(20vw, 10vh); }
}

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .page-hero h1 { font-size: 28px; }
  .page-hero { padding: 32px 0 16px; }
}