/* VinceYun 导航站主题：仅 frontend/index.html 使用（nginx 02-nav 只服务该页，其余 .html 返回 404）。
   设计令牌命名与 camera-app/styles.css 保持一致（--secondary / --error / --text-secondary /
   --border-color / --card-bg）；两站属不同 nginx root（不同源），无法共享同一个令牌文件，
   因此各自持有一份、仅统一命名口径。 */

:root {
  color-scheme: light;
  --bg: #eef4ff;
  --bg-soft: #f8fbff;
  --card-bg: rgba(255,255,255,.84);
  --panel-solid: #fff;
  --panel-muted: rgba(255,255,255,.58);
  --text: #172033;
  --text-secondary: #667085;
  --subtle: #98a2b3;
  --border-color: rgba(42,65,110,.13);
  --primary: #2563eb;
  --secondary: #06b6d4;
  --success: #059669;
  --warning: #d97706;
  --error: #dc2626;
  --info: #0ea5e9;
  --shadow-sm: 0 6px 18px rgba(30,64,175,.08);
  --shadow: 0 18px 55px rgba(15,23,42,.14);
  --radius-sm: 10px;
  --radius: 18px;
  --radius-lg: 26px;
  --speed: .22s;
  --font: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  /* 兼容 index.html 内联样式使用的 *-color 变量名（真实令牌见上方） */
  --primary-color: var(--primary);
  --secondary-color: var(--secondary);
  --tertiary-color: #14b8a6;
  --success-color: var(--success);
  --warning-color: var(--warning);
  --error-color: var(--error);
  --info-color: var(--info);
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b1220;
  --bg-soft: #111827;
  --card-bg: rgba(17,24,39,.80);
  --panel-solid: #182235;
  --panel-muted: rgba(31,41,55,.62);
  --text: #f8fafc;
  --text-secondary: #b6c2d2;
  --subtle: #7b8798;
  --border-color: rgba(226,232,240,.13);
  --primary: #60a5fa;
  --secondary: #22d3ee;
  --success: #34d399;
  --warning: #fbbf24;
  --error: #f87171;
  --info: #38bdf8;
  --shadow-sm: 0 6px 20px rgba(0,0,0,.28);
  --shadow: 0 22px 70px rgba(0,0,0,.36);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  font-family: var(--font);
  color: var(--text);
  line-height: 1.6;
  background:
    radial-gradient(circle at 18% 12%, rgba(37,99,235,.20), transparent 28%),
    radial-gradient(circle at 82% 8%, rgba(6,182,212,.18), transparent 26%),
    linear-gradient(135deg, var(--bg), var(--bg-soft));
  background-attachment: fixed;
}

a { color: inherit; }
button, input, select, textarea { font: inherit; }
::selection { background: var(--primary); color: #fff; }

.container {
  width: 100%;
  max-width: 1220px;
  min-height: calc(100vh - 110px);
  margin: 0 auto;
  padding: 28px 20px;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.main-card,
.service-card,
.modal-content {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
}

.main-card {
  width: 100%;
  max-width: 1060px;
  border-radius: var(--radius-lg);
  padding: 38px;
  animation: panelIn .45s ease both;
}
@keyframes panelIn { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }

.logo { text-align: center; margin-bottom: 28px; }
.logo h1 {
  margin-bottom: 8px;
  font-size: clamp(1.9rem, 4vw, 2.55rem);
  line-height: 1.15;
  font-weight: 850;
  letter-spacing: -.04em;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.logo p { color: var(--text-secondary); font-weight: 500; }

.section-divider {
  height: 1px;
  margin: 28px 0;
  background: linear-gradient(90deg, transparent, var(--border-color), var(--primary), var(--border-color), transparent);
  opacity: .65;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  min-height: 44px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 750;
  text-decoration: none;
  transition: transform var(--speed), box-shadow var(--speed), background var(--speed), border-color var(--speed);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: .56; cursor: not-allowed; transform: none; }
.btn-primary { color: #fff; background: linear-gradient(135deg, var(--primary), var(--secondary)); box-shadow: 0 10px 24px rgba(37,99,235,.20); }
.btn-secondary { color: var(--text); background: var(--panel-solid); border-color: var(--border-color); }

.text-small { font-size: .88rem; }

.theme-toggle {
  position: fixed;
  top: 22px;
  right: 22px;
  z-index: 1000;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border-color);
  border-radius: 15px;
  background: var(--card-bg);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  backdrop-filter: blur(18px);
  color: var(--text);
}
.theme-toggle:hover { transform: translateY(-2px); }

#theme-icon { display: inline-flex; align-items: center; justify-content: center; color: inherit; font-size: 20px; line-height: 1; }
#theme-icon::before { content: "☀️"; }
[data-theme="dark"] #theme-icon::before { content: "🌙"; }

/* 全局提示条：由 scripts/config.js 的 showMessage() 动态创建 */
.message-container { position: fixed; top: 22px; left: 50%; z-index: 10000; width: min(92vw, 620px); transform: translateX(-50%); display: flex; flex-direction: column; gap: 10px; pointer-events: none; }
.message { padding: 14px 18px; border-radius: 14px; border: 1px solid var(--border-color); background: var(--panel-solid); box-shadow: var(--shadow-sm); font-size: .92rem; font-weight: 650; opacity: 0; transform: translateY(-10px); transition: opacity var(--speed), transform var(--speed); pointer-events: auto; }
.message.message-show { opacity: 1; transform: translateY(0); }
.message-success, .message.success { color: var(--success); border-color: rgba(5,150,105,.24); }
.message-error, .message.error { color: var(--error); border-color: rgba(220,38,38,.24); }
.message-warning, .message.warning { color: var(--warning); border-color: rgba(217,119,6,.25); }
.message-info, .message.info { color: var(--info); border-color: rgba(14,165,233,.25); }

.service-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; }
.service-card { min-height: 156px; padding: 24px 18px; border-radius: var(--radius); text-align: center; cursor: pointer; text-decoration: none; transition: transform var(--speed), box-shadow var(--speed), border-color var(--speed); }
.service-card:hover { transform: translateY(-6px); border-color: rgba(37,99,235,.36); box-shadow: var(--shadow); }
.service-icon { display: inline-block; margin-bottom: 12px; font-size: 2.35rem; }
.service-name { margin-bottom: 6px; font-size: 1.04rem; font-weight: 850; }
.service-desc { color: var(--text-secondary); font-size: .88rem; }

/* 网络管理模块选择弹窗：由 index.html 的 showNetworkModal() 动态创建 */
.modal-overlay { position: fixed; inset: 0; z-index: 2000; display: flex; align-items: center; justify-content: center; padding: 20px; background: rgba(2,6,23,.58); backdrop-filter: blur(10px); }
.modal-content { width: min(92vw, 560px); max-height: 88vh; overflow: auto; padding: 28px; border-radius: var(--radius-lg); }
.modal-content h3 { margin-bottom: 18px; font-size: 1.25rem; }

.footer { width: 100%; margin-top: auto; padding: 24px 18px; color: var(--text-secondary); text-align: center; font-size: .88rem; }
.filing-info { display: flex; align-items: center; justify-content: center; gap: 18px; flex-wrap: wrap; margin-top: 10px; }
.filing-info a { display: inline-flex; align-items: center; gap: 5px; color: inherit; text-decoration: none; }
.filing-info a:hover { color: var(--primary); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(100,116,139,.35); border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: rgba(37,99,235,.55); }

@media (max-width: 860px) {
  .container { padding: 22px 14px; align-items: flex-start; }
  .main-card { padding: 28px 20px; border-radius: 22px; }
  .service-grid { grid-template-columns: 1fr; }
  .theme-toggle { top: 14px; right: 14px; width: 44px; height: 44px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}