/* ═══════════════════════════════════════
   雷达录音 · 全站共享样式
   所有页面引用此文件，改配色/导航只需改一处
   ═══════════════════════════════════════ */

/* ── 设计令牌（色板 + 间距 + 字体）── */
:root {
  --bg-deep: #08090d;
  --bg-card: #111318;
  --bg-elevated: #161820;
  --fg-primary: #e8eaed;
  --fg-body: #9ca0a8;
  --fg-muted: #5c6068;
  --accent: #dc2626;
  --accent-glow: rgba(220,38,38,0.18);
  --green: #30a46c;
  --gold: #f59e0b;
  --gold-glow: rgba(245,158,11,0.22);
  --blue: #5e9ef0;
  --border: rgba(255,255,255,0.06);
  --border-strong: rgba(255,255,255,0.10);
  --radius: 6px;
  --font-mono: "SF Mono","JetBrains Mono",monospace;
  --font-sans: "PingFang SC","Microsoft YaHei",sans-serif;
}

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

/* ── 基础 ── */
body {
  font-family: var(--font-sans);
  background: var(--bg-deep);
  color: var(--fg-body);
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
::selection { background: var(--accent); color: #fff; }

/* ── 导航栏 ── */
.nav {
  position: fixed; top:0; left:0; right:0; z-index:100;
  padding: 16px 24px;
  display: flex; align-items: center; justify-content: space-between;
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  background: rgba(8,9,13,0.85);
}
.nav-brand {
  font-family: var(--font-mono); font-size: 14px; color: var(--fg-primary);
}
.nav-brand span { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 20px; font-size: 13px; }
.nav-links a { color: var(--fg-muted); text-decoration: none; transition: color .2s; }
.nav-links a:hover { color: var(--fg-primary); }

/* ── 网格背景 ── */
.grid-bg {
  position: fixed; inset:0; pointer-events:none; opacity:0.03;
  background-image:
    linear-gradient(rgba(255,255,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 64px 64px;
}

/* ── 容器 ── */
.container {
  max-width: 800px; margin: 0 auto; padding: 120px 24px 60px;
  position: relative; z-index: 1;
}

/* ── 卡片 ── */
.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px 32px; margin-bottom: 16px;
}

/* ── 按钮 ── */
.btn {
  padding: 10px 24px; border-radius: var(--radius);
  font-size: 13px; font-weight: 600; cursor: pointer;
  text-decoration: none; display: inline-block;
  transition: all .15s; font-family: var(--font-mono);
  border: none;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover:not(:disabled) { box-shadow: 0 0 24px var(--accent-glow); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-ghost { background: transparent; color: var(--fg-muted); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--fg-primary); border-color: var(--fg-muted); }

/* ── 用户下拉菜单 ── */
.user-dropdown {
  position: relative; cursor: pointer; font-size: 13px;
  color: var(--fg-body); display: inline-block;
}
.user-menu {
  display: none; position: absolute; top: 100%; right: 0;
  margin-top: 8px; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 4px 0; min-width: 140px; z-index: 999;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}
.user-menu a {
  display: block; padding: 10px 16px; font-size: 13px;
  color: var(--fg-body); text-decoration: none; white-space: nowrap;
}
.user-menu a:hover { color: var(--fg-primary); background: rgba(255,255,255,0.04); }
.user-menu a.logout-link { color: var(--accent); }

/* ── 页脚 ── */
footer {
  border-top: 1px solid var(--border);
  padding: 24px 20px; text-align: center;
  font-size: 12px; color: var(--fg-muted);
}
footer a { color: var(--fg-muted); }

/* ── 工具：辅助类 ── */
.text-center { text-align: center; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-40 { margin-top: 40px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.hidden { display: none; }