/* ========================================================
   uncs 全局样式 - CSS变量主题系统
   亮色默认 + @media( prefers-color-scheme: dark ) 自动切暗色
   风格参考：csgo2ai.com (毛玻璃、轻阴影、圆角)
   品牌色：Teal (#26a69a / #80cbc4)
   ======================================================== */

/* === 全局重置 === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* === 亮色主题 (默认) === */
:root {
  --color-up: #ef4444;
  --color-up-bg: rgba(239,68,68,0.12);
  --color-down: #10b981;
  --color-down-bg: rgba(16,185,129,0.12);
  --warning-bg: rgba(245,158,11,0.12);

  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-card: rgba(255,255,255,0.75);
  --bg-card-hover: rgba(255,255,255,0.95);
  --border-color: rgba(148,163,184,0.5);
  --border-dim: rgba(226,232,240,0.7);
  --border-hover: rgba(148,163,184,0.8);

  --text-primary: #0b1426;
  --text-secondary: #1e293b;
  --text-dim: #2d3a50;
  --text-muted: #526077;
  --text-body: #1a2538;

  --accent: #26a69a;
  --accent-hover: #00897b;
  --accent-light: rgba(38,166,154,0.08);
  --accent-glow: rgba(38,166,154,0.25);
  --accent-border: rgba(38,166,154,0.15);
  --accent-dim: rgba(38,166,154,0.5);
  --accent-hover-bg: rgba(38,166,154,0.06);
  --accent-shadow: rgba(38,166,154,0.2);

  --btn-bg: #26a69a;
  --btn-border: #26a69a;
  --btn-text: #fff;
  --btn-hover-bg: #00897b;
  --btn-hover-text: #fff;

--danger: #ef4444;
  --warning: #f59e0b;
  --success: #10b981;
  --info: #3b82f6;

  --input-bg: rgba(255,255,255,0.9);
  --input-border: #cbd5e1;
  --input-focus: #26a69a;

  --nav-bg: rgba(255,255,255,0.7);
  --nav-border: rgba(255,255,255,0.4);
  --sidebar-bg: rgba(248,250,252,0.95);
  --sidebar-link: #334155;
  --sidebar-link-active: #26a69a;
  --sidebar-link-hover: rgba(38,166,154,0.06);

  --scrollbar-thumb: #cbd5e1;
  --scrollbar-track: transparent;

  --glass-bg: rgba(255,255,255,0.6);
  --glass-border: rgba(255,255,255,0.18);
  --glass-blur: blur(12px) saturate(140%);

  --shadow-sm: 0 2px 4px rgba(0,0,0,0.02), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-mid: 0 8px 24px -8px rgba(0,0,0,0.10);
  --shadow-md: 0 8px 12px -4px rgba(0,0,0,0.05), 0 3px 5px -3px rgba(0,0,0,0.03);
  --shadow-lg: 0 16px 20px -8px rgba(0,0,0,0.06), 0 8px 8px -6px rgba(0,0,0,0.03);
  --shadow-heavy: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-inset-glass: inset 0 1px 0 rgba(255,255,255,0.5), inset 0 0 0 1px rgba(255,255,255,0.2);

  --mesh-1: rgba(219,234,254,0.7);
  --mesh-2: rgba(224,231,255,0.6);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", sans-serif;
}

/* === 暗色主题 (系统深色模式) === */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #0b1220;
    --bg-secondary: #111827;
    --bg-card: rgba(16,24,40,0.9);
    --bg-card-hover: rgba(24,36,56,0.95);
    --border-color: rgba(148,163,184,0.35);
    --border-dim: rgba(100,116,139,0.3);
    --border-hover: rgba(148,163,184,0.5);

    --text-primary: #ffffff;
    --text-secondary: #f8fafc;
    --text-dim: #f0f4fe;
    --text-muted: #d0dcee;
    --text-body: #f2f6fc;

    --accent: #80cbc4;
    --accent-hover: #a7e3e0;
    --accent-light: rgba(128,203,196,0.12);
    --accent-glow: rgba(128,203,196,0.35);
    --accent-border: rgba(128,203,196,0.10);
    --accent-dim: rgba(128,203,196,0.45);
    --accent-hover-bg: rgba(128,203,196,0.06);
    --accent-shadow: rgba(128,203,196,0.15);

    --btn-bg: #26a69a;
    --btn-border: #80cbc4;
    --btn-text: #fff;
    --btn-hover-bg: #80cbc4;
    --btn-hover-text: #0b1120;

    --input-bg: rgba(15,23,42,0.9);
    --input-border: rgba(148,163,184,0.4);
    --input-focus: #80cbc4;

    --nav-bg: rgba(9,17,31,0.8);
    --nav-border: rgba(148,163,184,0.15);
    --sidebar-bg: rgba(11,18,32,0.95);
    --sidebar-link: #d0dcee;
    --sidebar-link-active: #80cbc4;
    --sidebar-link-hover: rgba(128,203,196,0.08);

    --scrollbar-thumb: #64748b;

    --glass-bg: rgba(9,17,31,0.6);
    --glass-border: rgba(148,163,184,0.12);
    --glass-blur: blur(14px) saturate(140%);

    --shadow-sm: 0 4px 10px -4px rgba(0,0,0,0.5), 0 1px 0 rgba(255,255,255,0.05);
    --shadow-mid: 0 8px 24px -8px rgba(0,0,0,0.4);
    --shadow-md: 0 12px 22px -14px rgba(0,0,0,0.6), 0 5px 12px -12px rgba(0,0,0,0.5);
    --shadow-lg: 0 22px 48px -24px rgba(0,0,0,0.7);
    --shadow-heavy: 0 4px 24px rgba(0,0,0,0.5);
    --shadow-inset-glass: inset 0 1px 0 rgba(255,255,255,0.08), inset 0 0 0 1px rgba(255,255,255,0.04);

    --mesh-1: rgba(30,64,175,0.18);
    --mesh-2: rgba(88,28,135,0.12);

    --input-bg: rgba(15,23,42,0.9);
  }
}

/* === 基础布局 === */
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-body);
  min-height: 100vh;
  line-height: 1.5;
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}
body::-webkit-scrollbar { width: 6px; }
body::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 3px; }
body::-webkit-scrollbar-track { background: var(--scrollbar-track); }

/* === 顶部导航栏 (PC+手机通用) === */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  height: 56px; padding: 0 20px;
  background: var(--nav-bg);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  border-bottom: 1px solid var(--nav-border);
  box-shadow: var(--shadow-sm);
  position: sticky; top: 0; z-index: 100;
}
.topbar-logo {
  color: var(--accent);
  font-weight: 700; font-size: 20px; text-decoration: none; letter-spacing: 2px;
}
.topbar-right { display: flex; align-items: center; gap: 10px; }
.topbar-btn {
  padding: 7px 18px; border-radius: var(--radius-md);
  text-decoration: none; font-size: 13px; font-weight: 500;
  transition: all .2s;
}
.topbar-login {
  color: var(--accent); border: 1px solid var(--accent);
}
.topbar-login:hover { background: var(--accent-light); }
.topbar-reg {
  color: #fff; background: var(--btn-bg); border: none;
  box-shadow: 0 2px 12px var(--accent-glow);
}
.topbar-reg:hover { box-shadow: 0 4px 20px var(--accent-glow); transform: translateY(-1px); }

/* 用户头像按钮 */
.user-avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 700; cursor: pointer; user-select: none;
  transition: all .2s; box-shadow: 0 2px 8px var(--accent-glow);
}
.user-avatar:hover { transform: scale(1.05); box-shadow: 0 4px 16px var(--accent-glow); }
.user-menu { position: relative; cursor: pointer; }

/* 用户下拉菜单 */
.user-dropdown {
  display: none; position: absolute; top: 100%; right: 0; margin-top: 10px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  min-width: 190px;
  box-shadow: var(--shadow-lg);
  z-index: 200; overflow: hidden;
}
.user-dropdown.show { display: block; }
.dropdown-userinfo { padding: 14px 18px 8px; }
.dropdown-username { font-size: 15px; color: var(--text-primary); font-weight: 600; }
.dropdown-userid { font-size: 11px; color: var(--text-muted); margin-top: 2px; }
.dropdown-item {
  display: block; padding: 12px 18px; color: var(--text-secondary);
  text-decoration: none; font-size: 14px; transition: background .15s;
}
.dropdown-item:hover { background: var(--accent-light); color: var(--accent); }
.dropdown-item.admin-item { color: var(--info); }
.dropdown-item.logout-item { color: var(--danger); }
.dropdown-divider { height: 1px; background: var(--border-dim); margin: 4px 0; }

/* === 底部导航 (手机) === */
.bottom-nav {
  display: none; /* 手机才显示 */
  position: fixed; bottom: 0; left: 0; right: 0; height: 60px;
  background: var(--nav-bg);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-top: 1px solid var(--nav-border);
  box-shadow: 0 -4px 20px rgba(0,0,0,0.05);
  align-items: center; justify-content: space-around;
  z-index: 99; padding: 0 4px 4px;
}
.bottom-nav-item {
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; text-decoration: none;
  padding: 4px 0; min-width: 48px; gap: 2px;
  transition: all .2s; flex: 1;
}
.bottom-nav-icon { font-size: 20px; line-height: 1; }
.bottom-nav-label {
  font-size: 10px; color: var(--text-muted); line-height: 1;
}
.bottom-nav-item.active .bottom-nav-label { color: var(--accent); font-weight: 600; }
.bottom-nav-item:hover .bottom-nav-label { color: var(--accent); }

/* === 通用卡片 === */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(8px) saturate(130%);
  -webkit-backdrop-filter: blur(8px) saturate(130%);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md), var(--shadow-inset-glass);
  transition: all .2s;
}
.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-color);
  box-shadow: var(--shadow-lg), var(--shadow-inset-glass);
}

/* === 认证卡片 === */
.auth-card {
  width: 90%; max-width: 380px;
  margin: 40px auto;
  padding: 36px 28px;
  text-align: center;
}
.auth-title {
  font-size: 24px; font-weight: 700;
  color: var(--text-primary); margin: 0 0 4px;
}
.auth-subtitle {
  font-size: 14px; color: var(--text-muted); margin: 0 0 28px;
}

/* === 表单 === */
.form-group { margin-bottom: 16px; text-align: left; }
.form-group label {
  display: block; font-size: 13px;
  color: var(--text-dim); margin-bottom: 6px;
}
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 12px 14px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 14px; outline: none; transition: border-color .2s;
  font-family: var(--font-sans);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--input-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.captcha-row .captcha-input-wrap { display: flex; gap: 10px; align-items: center; }
.captcha-row .captcha-input-wrap input { flex: 1; }
.captcha-row .captcha-img { height: 42px; border-radius: var(--radius-sm); cursor: pointer; }

.form-btn {
  width: 100%; padding: 13px;
  background: var(--btn-bg);
  border: none; border-radius: var(--radius-md);
  color: var(--btn-text);
  font-size: 15px; font-weight: 600; cursor: pointer;
  transition: all .2s;
  box-shadow: 0 4px 16px var(--accent-glow);
}
.form-btn:hover {
  box-shadow: 0 6px 24px var(--accent-glow);
  transform: translateY(-1px);
}

.form-error {
  background: rgba(239,68,68,0.06);
  border: 1px solid rgba(239,68,68,0.12);
  border-radius: var(--radius-sm);
  padding: 10px; color: var(--danger);
  font-size: 13px; margin-bottom: 16px; text-align: center;
}

.auth-footer { text-align: center; margin-top: 20px; font-size: 13px; color: var(--text-muted); }
.auth-footer a { color: var(--accent); text-decoration: none; }
.auth-footer a:hover { text-decoration: underline; }

/* === 主页英雄区 === */
.home-hero { text-align: center; padding: 56px 20px 36px; position: relative; overflow: hidden; }
.home-hero::before {
  content: ''; position: absolute; top: -40%; left: 50%;
  transform: translateX(-50%); width: 400px; height: 400px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  border-radius: 50%; pointer-events: none;
}
.home-hero h1 { margin: 0; font-size: 36px; color: var(--text-primary); letter-spacing: 3px; font-weight: 700; position: relative; }
.home-hero p { margin: 12px 0 0; font-size: 15px; color: var(--text-muted); letter-spacing: 1px; position: relative; }

/* === 功能卡片 === */
.function-grid {
  display: flex; flex-direction: column; gap: 14px;
  padding: 0 16px 40px; max-width: 500px; margin: 0 auto;
}
.func-card {
  display: flex; align-items: center;
  background: var(--bg-card);
  backdrop-filter: blur(8px) saturate(130%);
  -webkit-backdrop-filter: blur(8px) saturate(130%);
  border-radius: var(--radius-xl);
  padding: 18px 20px;
  border: 1px solid var(--border-dim);
  text-decoration: none;
  transition: all .25s ease;
  gap: 16px;
  box-shadow: var(--shadow-md), var(--shadow-inset-glass);
}
.func-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--shadow-inset-glass);
  background: var(--bg-card-hover);
}
.func-icon {
  font-size: 30px; flex-shrink: 0; width: 50px; height: 50px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-md);
  background: var(--accent-light);
  border: 1px solid var(--glass-border);
}
.func-info { flex: 1; min-width: 0; }
.func-title {
  font-size: 11px; color: var(--accent); font-weight: 600;
  letter-spacing: 2px; text-transform: uppercase; margin-bottom: 3px;
}
.func-name {
  font-size: 17px; color: var(--text-primary);
  font-weight: 600; margin-bottom: 3px; line-height: 1.3;
}
.func-desc { font-size: 13px; color: var(--text-muted); line-height: 1.4; }
.func-arrow {
  font-size: 20px; color: var(--border-color); flex-shrink: 0; margin-left: 4px;
  transition: all .2s;
}
.func-card:hover .func-arrow { color: var(--accent); transform: translateX(3px); }

/* === 信号类 === */
.signal-green { color: var(--color-down); font-weight: bold; }
.signal-red { color: var(--color-up); font-weight: bold; }
.signal-mixed { color: var(--warning); font-weight: bold; }
.signal-gray { color: var(--text-muted); }

/* === 监控列表 === */
.signal-tabs { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.signal-tab {
  padding: 8px 16px; border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-dim); cursor: pointer; font-size: 13px; transition: all .2s;
}
.signal-tab.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.signal-tab.buy-tab.active { background: var(--color-down); border-color: var(--color-down); }
.signal-tab.sell-tab.active { background: var(--color-up); border-color: var(--color-up); }
.signal-tab.none-tab.active { background: #546e7a; border-color: #546e7a; }
.tab-count { font-size: 11px; opacity: .7; margin-left: 4px; }

.monitor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 12px;
  padding: 0 16px 20px;
  max-width: 1400px;
  margin: 0 auto;
}

.monitor-card {
  background: var(--bg-card);
  backdrop-filter: blur(8px) saturate(130%);
  -webkit-backdrop-filter: blur(8px) saturate(130%);
  border-radius: var(--radius-lg);
  padding: 16px;
  border: 1px solid var(--border-dim);
  transition: all .2s;
  box-shadow: var(--shadow-sm), var(--shadow-inset-glass);
}
.monitor-card:hover {
  border-color: var(--border-color);
  box-shadow: var(--shadow-md), var(--shadow-inset-glass);
  transform: translateY(-1px);
}
.monitor-card-header {
  display: flex; justify-content: space-between;
  align-items: flex-start; margin-bottom: 10px;
}
.monitor-card-name {
  font-weight: 600; font-size: 14px;
  color: var(--text-primary); flex: 1; word-break: break-all;
}

/* === 容器 === */
.container { max-width: 1200px; margin: 0 auto; padding: 16px; }
.page-header { margin-bottom: 16px; }
.page-header h1 { font-size: 20px; margin: 0 0 4px; color: var(--text-primary); }
.page-header p { font-size: 13px; color: var(--text-muted); margin: 0; }

/* === PC响应式布局 === */
@media (min-width: 768px) {
  /* PC: 顶部导航变宽 */
  .topbar { padding: 0 32px; }
  .bottom-nav { display: none !important; }
  body { padding-bottom: 0 !important; }

  /* PC首页: 功能卡片宽屏 */
  .function-grid {
    display: grid !important;
    grid-template-columns: 1fr 1fr;
    max-width: 800px;
    gap: 20px;
    padding: 0 32px 60px;
  }
  .func-card { padding: 24px 28px; }

  .home-hero { padding: 80px 40px 48px; }
  .home-hero h1 { font-size: 48px; }
  .home-hero p { font-size: 17px; }

  .monitor-grid {
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    padding: 0 32px 20px;
  }

  .auth-card { margin: 80px auto; padding: 44px 36px; }

  /* 推荐页卡片 */
  .skin-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)) !important;
  }
}

@media (max-width: 767px) {
  .bottom-nav { display: flex; }
  body { padding-bottom: 60px; }
}

/* === 工具类 === */
.tag { font-size: 11px; padding: 2px 6px; border-radius: 4px; }
.tag-vip {
  background: linear-gradient(135deg, #ffd700, #ffaa00);
  color: #1a1a2e; font-weight: bold;
}
.admin-link { color: var(--info) !important; }