/* ============================================================
   命理乾坤 — 共享样式 (Shared Base Styles)
   使用页面: index.html (八字), ziwei.html (紫微斗数)
   版本: v7.6  最后更新: 2026-07-20
   ============================================================ */

/* ---- 1. 设计变量 (Design Tokens) ---- */
:root {
  --bg-dark: #0a0e1a;
  --bg-card: #111827;
  --bg-card2: #1a2236;
  --gold: #c9a84c;
  --gold-light: #e8d48b;
  --red: #c0392b;
  --red-light: #e74c3c;
  --blue: #2980b9;
  --green: #27ae60;
  --text: #e8e8e8;
  --text-dim: #8892a4;
  --border: #2a3550;
  --purple: #9b59b6;
}

/* ---- 2. 全局重置与基础布局 ---- */
* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "Noto Serif SC", "SimSun", "宋体", serif;
  background: var(--bg-dark);
  color: var(--text);
  min-height: 100vh;
  background-image:
    radial-gradient(ellipse at 20% 50%, rgba(201,168,76,0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(192,57,43,0.03) 0%, transparent 50%);
}

/* ---- 3. 导航栏 (Navbar) ---- */
.navbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px; background: var(--bg-card);
  border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(10px);
}
.navbar .brand {
  font-size: 1.3em; color: var(--gold); letter-spacing: 6px;
  font-weight: bold; text-shadow: 0 0 20px rgba(201,168,76,0.25);
}
.navbar .nav-tabs { display: flex; gap: 6px; }
.nav-tab {
  padding: 8px 22px; border: 1px solid var(--border); border-radius: 6px;
  cursor: pointer; font-family: inherit; font-size: 0.92em; color: var(--text-dim);
  background: transparent; transition: all 0.3s; text-decoration: none;
  display: inline-block; letter-spacing: 2px;
}
.nav-tab:hover { border-color: var(--gold); color: var(--gold); }
.nav-tab.active {
  background: rgba(201,168,76,0.12); border-color: var(--gold); color: var(--gold);
}

/* ---- 4. 页面头部 (Header) ---- */
.header {
  text-align: center; padding: 28px 20px 12px; border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(201,168,76,0.06) 0%, transparent 100%);
}
.header h1 {
  font-size: 2em; color: var(--gold); letter-spacing: 8px;
  text-shadow: 0 0 30px rgba(201,168,76,0.3);
}
.header .subtitle {
  color: var(--text-dim); font-size: 0.88em; margin-top: 6px; letter-spacing: 3px;
}

/* ---- 5. 输入区块 (Input Section) ---- */
.input-section { max-width: 720px; margin: 28px auto; padding: 0 20px; }
.input-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px;
  padding: 28px; box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.input-card h2 {
  color: var(--gold); font-size: 1.15em; margin-bottom: 18px;
  padding-bottom: 10px; border-bottom: 1px solid var(--border); letter-spacing: 3px;
}
.form-row { display: flex; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.form-group { flex: 1; min-width: 110px; }
.form-group label {
  display: block; color: var(--text-dim); font-size: 0.84em;
  margin-bottom: 5px; letter-spacing: 1px;
}
.form-group input, .form-group select {
  width: 100%; padding: 9px 11px; background: var(--bg-card2);
  border: 1px solid var(--border); border-radius: 6px; color: var(--text);
  font-size: 1em; font-family: inherit; transition: border-color 0.3s;
}
.form-group input:focus, .form-group select:focus {
  outline: none; border-color: var(--gold); box-shadow: 0 0 8px rgba(201,168,76,0.15);
}
.sex-group { display: flex; gap: 12px; margin-top: 5px; }
.sex-btn {
  flex: 1; padding: 9px; text-align: center; border: 1px solid var(--border);
  border-radius: 6px; cursor: pointer; transition: all 0.3s;
  background: var(--bg-card2); color: var(--text-dim); font-family: inherit; font-size: 1em;
}
.sex-btn.active-male {
  border-color: var(--blue); color: var(--blue); background: rgba(41,128,185,0.1);
}
.sex-btn.active-female {
  border-color: var(--red-light); color: var(--red-light); background: rgba(231,76,60,0.08);
}
.btn-analyze {
  width: 100%; padding: 13px; margin-top: 18px;
  background: linear-gradient(135deg, var(--gold) 0%, #a08030 100%);
  color: #1a1a1a; border: none; border-radius: 8px; font-size: 1.1em;
  font-family: inherit; letter-spacing: 4px; cursor: pointer; transition: all 0.3s; font-weight: bold;
}
.btn-analyze:hover { transform: translateY(-1px); box-shadow: 0 4px 20px rgba(201,168,76,0.3); }
.btn-analyze:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* ---- 6. 结果区容器 ---- */
.result-section { max-width: 1060px; margin: 30px auto; padding: 0 20px 60px; display: none; }
.result-section.show { display: block; }

/* ---- 7. 加载动画 (Loading) ---- */
.loading { text-align: center; padding: 60px 20px; display: none; }
.loading.show { display: block; }
.spinner {
  width: 40px; height: 40px; border: 3px solid var(--border);
  border-top-color: var(--gold); border-radius: 50%;
  animation: spin 0.8s linear infinite; margin: 0 auto 16px;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-text { color: var(--text-dim); letter-spacing: 2px; }

/* ---- 8. 免责声明 (Disclaimer) ---- */
.disclaimer {
  text-align: center; color: var(--text-dim); font-size: 0.75em;
  padding: 20px; border-top: 1px solid var(--border); margin-top: 10px;
}

/* ---- 9. 响应式 (Responsive) ---- */
@media (max-width: 600px) {
  .navbar { padding: 10px 16px; }
  .navbar .brand { font-size: 1.1em; letter-spacing: 4px; }
  .nav-tab { padding: 6px 14px; font-size: 0.82em; }
  .header h1 { font-size: 1.5em; letter-spacing: 4px; }
  .form-row { flex-direction: column; }
}