/* moved from /static/common.css */
/* ========== 全局变量 ========== */
:root {
  --bg-deep: #08080c;
  --bg-primary: #0f0f14;
  --bg-secondary: #16161e;
  --bg-card: #1a1a24;
  --bg-card-hover: #22222e;
  --gold: #d4af37;
  --gold-light: #f5d042;
  --gold-dark: #b8962e;
  --neon-purple: #8b5cf6;
  --neon-purple-light: #a78bfa;
  --neon-cyan: #22d3ee;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: rgba(148, 163, 184, 0.12);
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.55);
  --transition: 0.2s ease;
}

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

body {
  font-family: Inter, "Noto Sans SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
  background: #0a0a0a;
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  font-size: 15px;
}

a { color: inherit; text-decoration: none; transition: color var(--transition); }

.container { width: 88%; max-width: 1400px; margin: 0 auto; padding: 0 24px; box-sizing: border-box; }

@media (max-width: 768px) {
  .container { width: 100%; padding: 0 16px; }
  body { overflow-x: hidden; }
}

/* ========== 顶部导航 ========== */
.nav-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 28px;
  background: rgba(10, 10, 10, 0.95);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-brand a {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-img { height: 34px; width: auto; }
.logo-text { font-size: 17px; font-weight: 600; letter-spacing: 0.02em; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  padding: 8px 18px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.nav-link:hover { color: var(--text-primary); }
.nav-link.active { color: #ff6b35; background: rgba(255, 107, 53, 0.15); }

.nav-collapse { display: flex; align-items: center; gap: 16px; }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-user {
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  position: relative;
}
.nav-user:hover { color: #ff6b35; }

.nav-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 24px;
  cursor: pointer;
  padding: 4px 8px;
}

/* 用户下拉菜单 */
.nav-user-wrap { position: relative; }
.nav-user-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 8px;
  min-width: 180px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  z-index: 100;
}
.nav-user-dropdown.active { display: block; }
.nav-user-dropdown a,
.nav-user-dropdown button {
  display: block;
  width: 100%;
  padding: 12px 16px;
  text-align: left;
  color: var(--text-primary);
  background: none;
  border: none;
  cursor: pointer;
  font-size: 14px;
}
.nav-user-dropdown a:hover,
.nav-user-dropdown button:hover {
  background: rgba(255,255,255,0.06);
}
.nav-user-dropdown .divider { height: 1px; background: var(--border); }

/* 移动端 */
@media (max-width: 768px) {
  .nav-main { padding: 12px 16px; }
  .logo-text { font-size: 15px; }
  .logo-img { height: 28px; }
  .nav-menu-toggle { display: block; }
  .nav-collapse {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, 0.98);
    border-bottom: 1px solid var(--border);
    padding: 16px;
    flex-direction: column;
    gap: 16px;
  }
  .nav-main.nav-open .nav-collapse {
    display: flex;
  }
  .nav-main { position: relative; flex-wrap: wrap; }
  .nav-links { flex-direction: column; width: 100%; }
  .nav-link { padding: 10px 0; display: block; }
  .nav-actions { width: 100%; justify-content: center; }
  .footer-main { padding: 28px 16px; }
  .footer-inner { font-size: 13px; gap: 8px; text-align: center; }
  .modal-overlay { padding: 16px; align-items: flex-start; padding-top: 24px; }
  .modal { max-height: 85vh; }
  .modal-header, .modal-footer { padding: 16px; }
  .modal-body { padding: 16px; }
  .btn { padding: 10px 16px; font-size: 14px; }
  .btn-sm { padding: 8px 14px; font-size: 13px; }
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-block { width: 100%; }

.btn-primary {
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-dark) 100%);
  color: #08080c;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold) 100%);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(212, 175, 55, 0.35);
}

/* 紫色主按钮（个人中心等场景） */
.btn-primary-purple {
  background: linear-gradient(135deg, var(--neon-purple) 0%, #6d28d9 100%);
  color: #fff;
}

.btn-primary-purple:hover {
  background: linear-gradient(135deg, var(--neon-purple-light) 0%, var(--neon-purple) 100%);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(139, 92, 246, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-outline:hover { border-color: var(--gold); color: var(--gold); }

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover { color: var(--text-primary); background: rgba(255, 255, 255, 0.06); }

.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: var(--danger-hover); }

/* ========== 页脚 ========== */
.footer-main {
  padding: 40px 0;
  border-top: 1px solid var(--border);
  background: rgba(10, 10, 15, 0.6);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-muted);
  flex-wrap: wrap;
}

/* ========== Toast 消息提示 ========== */
#toast-container {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 12px;
  pointer-events: none;
}

.toast {
  padding: 14px 20px;
  min-width: 200px;
  max-width: 360px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  font-size: 14px;
  transform: translateX(120%);
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.toast-show {
  transform: translateX(0);
  opacity: 1;
}

.toast-success { border-left: 4px solid var(--gold); }
.toast-error { border-left: 4px solid var(--danger); }
.toast-info { border-left: 4px solid var(--neon-cyan); }

/* ========== 通用模态框 ========== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  overflow-y: auto;
  padding: 24px;
}

.modal-overlay.active { display: flex; }

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 { font-size: 18px; }
.modal-close {
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 24px;
  cursor: pointer;
}

.modal-body { padding: 24px; }
.modal-footer { display: flex; justify-content: flex-end; gap: 12px; padding: 20px 24px; border-top: 1px solid var(--border); }

.modal .form-group { margin-bottom: 20px; }
.modal .form-group label { display: block; margin-bottom: 8px; color: var(--text-secondary); font-size: 13px; }
.modal input {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
}
.modal input:disabled { opacity: 0.7; cursor: not-allowed; }

/* ========== 全局返回按钮（各板块跳转页左上角） ========== */
.page-back {
  position: absolute;
  top: 20px;
  left: 20px;
  z-index: 10;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
}
.page-back:hover { color: var(--gold); }
@media (max-width: 768px) {
  .page-back { top: 14px; left: 14px; font-size: 13px; }
}