/* ============================================================
   buy.css —— 最终修正版（导航栏链接颜色与 main.css 完全一致）
   ============================================================ */

:root {
  --g-bg-glass: rgba(255, 255, 255, 0.72);
  --g-bg-glass-dark: rgba(255, 255, 255, 0.08);
  --g-blur: 14px;
  --g-saturate: 160%;
  --g-border: rgba(0, 0, 0, 0.1);
  --g-border-dark: rgba(255, 255, 255, 0.15);
  --g-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
  --g-shadow-dark: 0 8px 32px rgba(0, 0, 0, 0.45);
  --g-highlight: inset 0 1px 2px rgba(255, 255, 255, 0.5);
  --g-highlight-dark: inset 0 1px 2px rgba(255, 255, 255, 0.24);
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --primary: #6366f1;
  --primary-light: #a5b4fc;
  --primary-dark: #4f46e5;
  --secondary: #38bdf8;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  --bg-main: #eef1f6;
  --border-color: #e2e8f0;
  --success: #10b981;
  --danger: #ef4444;
}

body.dark {
  --g-bg-glass: var(--g-bg-glass-dark);
  --g-border: var(--g-border-dark);
  --g-highlight: var(--g-highlight-dark);
  --g-shadow: var(--g-shadow-dark);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --bg-main: #0c0c12;
  --border-color: #334155;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-main);
  background-image: radial-gradient(circle at 20% 30%, rgba(80, 120, 255, 0.12) 0%, transparent 600px),
					radial-gradient(circle at 80% 70%, rgba(200, 80, 220, 0.08) 0%, transparent 600px);
  background-attachment: fixed;
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  transition: var(--transition);
  padding-top: 100px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }

/* ===== 顶部导航栏（完全对齐 main.css） ===== */
header {
  position: fixed;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  width: min(980px, 94%);
  height: 56px;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  background: var(--g-bg-glass);
  backdrop-filter: blur(var(--g-blur)) saturate(var(--g-saturate));
  -webkit-backdrop-filter: blur(var(--g-blur)) saturate(var(--g-saturate));
  border: 1px solid var(--g-border);
  border-radius: 999px;
  box-shadow: var(--g-shadow), var(--g-highlight);
  transition: var(--transition);
  isolation: isolate;
  overflow: hidden;
}
header .logo-link {
  display: flex;
  align-items: center;
  height: 100%;
  padding: 6px 10px;
  border-radius: 999px;
  transition: background 0.2s;
  flex-shrink: 0;
}
header .logo-link:hover { background: rgba(255, 255, 255, 0.1); }
header .logo-img {
  height: 34px;
  max-width: 140px;
  border-radius: 8px;
  filter: brightness(0) saturate(100%);
  transition: transform 0.3s ease, filter 0.3s ease;
}
header .logo-img:hover { transform: scale(1.04); filter: brightness(0.3) saturate(100%); }
body.dark header .logo-img { filter: brightness(0) invert(1) saturate(100%); }
body.dark header .logo-img:hover { filter: brightness(0.3) invert(1) saturate(100%); }

.nav-links { display: flex; align-items: center; gap: 4px; }

/* ★★★ 核心：普通链接默认灰色，hover/active 保持灰色，无背景 ★★★ */
.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding: 6px 12px;
  border-radius: 0;
  white-space: nowrap;
  transition: color 0.2s;
  background: transparent;
  border: none;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-secondary);  /* 保持灰色，不变紫 */
  background: transparent;
  border: none;
}

/* ★★★ 只有带 .capsule 类的链接才显示紫色胶囊 ★★★ */
.nav-links a.capsule {
  background: var(--g-bg-glass);
  backdrop-filter: blur(var(--g-blur)) saturate(var(--g-saturate));
  -webkit-backdrop-filter: blur(var(--g-blur)) saturate(var(--g-saturate));
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 6px 12px;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.nav-links a.capsule:hover,
.nav-links a.capsule.active {
  color: var(--primary);
  background: rgba(99, 102, 241, 0.10);
  border-color: var(--g-border);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.theme-toggle {
  background: transparent;
  border: 1px solid var(--g-border);
  border-radius: 50%;
  width: 34px;
  height: 34px;
  display: flex !important;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: var(--g-highlight);
  margin: 0 4px;
  flex-shrink: 0;
}
.theme-toggle:hover { background: rgba(255, 255, 255, 0.15); color: var(--text-primary); border-color: var(--text-primary); transform: scale(1.06); }
body.dark .theme-toggle:hover { background: rgba(255, 255, 255, 0.05); }

/* ===== 底部信息栏 ===== */
.footer {
  text-align: center;
  padding: 34px 24px 28px;
  color: var(--text-muted);
  font-size: 0.83rem;
  margin-top: 44px;
  background: var(--g-bg-glass);
  backdrop-filter: blur(var(--g-blur)) saturate(var(--g-saturate));
  -webkit-backdrop-filter: blur(var(--g-blur)) saturate(var(--g-saturate));
  border-top: 1px solid var(--g-border);
  box-shadow: var(--g-highlight);
}
.footer-links a {
  color: var(--text-muted);
  margin: 0 12px;
  transition: color 0.2s;
  font-weight: 440;
}
.footer-links a:hover {
  color: var(--text-primary);
  text-decoration: underline;
}
.copyright { margin-top: 8px; font-size: 0.78rem; }

/* ===== 页面内容 ===== */
.container { max-width: 900px; width: 90%; margin: 0 auto 40px; display: flex; flex-direction: column; gap: 20px; }
.card {
  background: var(--g-bg-glass);
  backdrop-filter: blur(var(--g-blur)) saturate(var(--g-saturate));
  -webkit-backdrop-filter: blur(var(--g-blur)) saturate(var(--g-saturate));
  border: 1px solid var(--g-border);
  box-shadow: var(--g-shadow), var(--g-highlight);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: var(--transition);
}
.card:hover { transform: translateY(-2px); }
.card h2 { font-size: 1.25rem; margin-bottom: 1rem; color: var(--text-primary); padding-bottom: 8px; border-bottom: 1px solid var(--g-border); }

.coin-type { display: flex; gap: 1rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
.coin-type button {
  flex: 1; min-width: 120px; padding: 0.75rem;
  border: 1px solid var(--g-border); border-radius: var(--radius-sm);
  background: var(--g-bg-glass); backdrop-filter: blur(8px);
  cursor: pointer; transition: all 0.2s;
  display: flex; align-items: center; justify-content: center; gap: 8px; font-weight: 500;
  color: var(--text-primary);
}
.coin-type button.active { border-color: var(--primary); background: rgba(99,102,241,0.10); color: var(--primary); }

.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; margin-bottom: 0.5rem; font-weight: 500; color: var(--text-primary); }
.form-group input {
  width: 100%; padding: 0.875rem;
  border: 1px solid var(--g-border); border-radius: var(--radius-sm);
  font-size: 1rem; color: var(--text-primary); background: var(--g-bg-glass);
  backdrop-filter: blur(6px); outline: none; transition: border 0.2s, box-shadow 0.2s;
}
.form-group input:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(99,102,241,0.08); }

.btn {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; padding: 0.875rem; border: none; border-radius: var(--radius-sm);
  font-size: 1rem; font-weight: 500; cursor: pointer; transition: all 0.2s;
  margin-bottom: 0.75rem;
}
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #fff; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(99,102,241,0.25); }
.btn:disabled { background-color: var(--gray-light) !important; color: var(--text-muted) !important; cursor: not-allowed !important; opacity: 0.7 !important; }

.result-card { background: rgba(240,253,244,0.85); border: 1px solid #bbf7d0; border-radius: var(--radius-md); padding: 1.5rem; margin-top: 1rem; display: none; backdrop-filter: blur(6px); }
.result-card.error { background: rgba(254,242,242,0.85); border-color: #fecaca; color: #b91c1c; }
.result-card .order-no { font-size: 1.1rem; font-weight: 600; color: var(--primary); margin: 0.5rem 0; word-break: break-all; }

.qrcode-container { text-align: center; margin: 20px 0; padding: 20px; background: var(--g-bg-glass); border-radius: var(--radius-md); border: 1px solid var(--g-border); backdrop-filter: blur(8px); }
.qrcode-container img { max-width: 250px; max-height: 250px; width: 100%; height: auto; border: 1px solid var(--g-border); border-radius: var(--radius-sm); margin: 10px 0; }

.login-prompt { background: #fef3c7; border: 1px solid #fcd34d; border-radius: var(--radius-sm); padding: 1rem; margin-bottom: 1.5rem; color: #92400e; text-align: center; }
.login-prompt a { color: var(--primary); font-weight: 600; text-decoration: underline; }

.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.6); display: flex; align-items: center; justify-content: center; z-index: 9999; backdrop-filter: blur(4px); }
.modal-content { background: var(--bg-main); border-radius: 12px; padding: 2rem; max-width: 380px; width: 90%; text-align: center; position: relative; box-shadow: 0 20px 60px rgba(0,0,0,0.3); border: 1px solid var(--g-border); }
.modal-close { position: absolute; top: 12px; right: 16px; font-size: 1.8rem; cursor: pointer; color: var(--text-secondary); line-height: 1; }
.modal-close:hover { color: var(--danger); }
.modal-content h3 { margin-bottom: 1rem; font-size: 1.2rem; color: var(--text-primary); }
.modal-qrcode { margin: 1.5rem 0; }
.modal-qrcode img { max-width: 240px; width: 100%; height: auto; border-radius: 8px; border: 1px solid var(--g-border); }
.modal-tip { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 1.5rem; }
.btn-secondary { background: var(--primary); color: #fff; width: 100%; padding: 0.75rem; border: none; border-radius: var(--radius-sm); font-size: 1rem; cursor: pointer; }
.btn-secondary:hover { opacity: 0.85; }

#toast-container { position: fixed; top: 20px; left: 50%; transform: translateX(-50%); z-index: 99999; display: flex; flex-direction: column; align-items: center; gap: 8px; pointer-events: none; }
.toast-item { background: #333; color: #fff; padding: 12px 24px; border-radius: 6px; font-size: 14px; box-shadow: 0 4px 12px rgba(0,0,0,0.3); opacity: 0; transform: translateY(-10px); transition: opacity 0.3s ease, transform 0.3s ease; white-space: nowrap; }
.toast-item.show { opacity: 1; transform: translateY(0); }

/* 暗色适配 */
body.dark .login-prompt { background: #78350f; border-color: #92400e; color: #fef3c7; }
body.dark .login-prompt a { color: #fbbf24; }
body.dark .info { background: #1e3a8a !important; border-color: #3b82f6 !important; color: #dbeafe !important; }
body.dark .result-card { background: rgba(6,78,59,0.7); border-color: #059669; color: #d1fae5; }
body.dark .result-card.error { background: rgba(127,29,29,0.7); border-color: #dc2626; color: #fecaca; }
body.dark .result-card .order-no { color: #93c5fd; }
body.dark .qrcode-container p { color: var(--text-secondary); }
body.dark .qrcode-container h3 { color: var(--text-primary); }
body.dark .form-group label { color: var(--text-primary); }
body.dark .coin-type button { background: rgba(30,41,59,0.6); border-color: #334155; color: #f1f5f9; }
body.dark .coin-type button.active { background: rgba(30,58,138,0.6); border-color: #3b82f6; color: #93c5fd; }
body.dark .form-group input { background: rgba(15,23,42,0.6); border-color: #334155; color: #f1f5f9; }
body.dark .qrcode-container { background: rgba(15,23,42,0.5); border-color: #334155; }
body.dark .highlight { background: #854d0e; color: #fef3c7; }

/* 响应式 */
@media (max-width: 930px) {
  .nav-links a { font-size: 0.84rem; padding: 6px 10px; }
  header .logo-img { height: 36px; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .coin-type { flex-direction: column; }
  .qrcode-container img { max-width: 200px; max-height: 200px; }
}
@media (max-width: 610px) {
  .nav-links a span { display: none; }
  .nav-links a { padding: 6px 8px; font-size: 1.05rem; }
}
@media (max-width: 505px) {
  body { padding-top: 94px; }
  header { height: 52px; padding: 0 12px; top: 12px; }
  header .logo-img { height: 32px; max-width: 108px; }
  .card { padding: 1rem; }
}
@media (max-width: 480px) {
  .btn { padding: 0.75rem; font-size: 0.9rem; }
}