/* ===== CSS 变量 ===== */
:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a28;
  --text-primary: #e8e8ed;
  --text-secondary: #9898a8;
  --accent: #00e5ff;
  --accent-purple: #7c4dff;
  --border: #2a2a3a;
  --success: #00e676;
  --warning: #ffd740;
  --danger: #ff5252;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-input: 8px;
  --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.3);
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-code: "SF Mono", "Fira Code", Consolas, monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  font-size: 16px;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: #33eaff;
}

/* ===== 页面淡入动画 ===== */
@keyframes pageFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.page-body {
  animation: pageFadeIn 0.3s ease both;
}

/* ===== 布局容器 ===== */
.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-block;
  background-color: var(--accent);
  color: #0a0a0f;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  border: none;
  cursor: pointer;
  font-size: 15px;
  font-family: var(--font-main);
  transition: all 0.2s ease;
  text-align: center;
}

.btn-primary:hover {
  background-color: #33eaff;
  color: #0a0a0f;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 229, 255, 0.35);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

.btn-secondary {
  display: inline-block;
  background-color: transparent;
  color: var(--accent);
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  border: 1.5px solid var(--accent);
  cursor: pointer;
  font-size: 15px;
  font-family: var(--font-main);
  transition: all 0.2s ease;
  text-align: center;
}

.btn-secondary:hover {
  background-color: rgba(0, 229, 255, 0.08);
  color: #33eaff;
  border-color: #33eaff;
  transform: translateY(-2px);
}

.btn-secondary:active {
  transform: translateY(0);
}

.btn-secondary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ===== 卡片 ===== */
.card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.45);
}

/* ===== 输入框 ===== */
.input {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
  padding: 10px 14px;
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 15px;
  width: 100%;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.15);
}

/* ===== 导航栏 ===== */
#nav-mount nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

#nav-mount .nav-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

#nav-mount .nav-logo {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

#nav-mount .nav-logo:hover {
  color: var(--accent);
}

#nav-mount .nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

#nav-mount .nav-links a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color 0.2s;
}

#nav-mount .nav-links a:hover {
  color: var(--text-primary);
}

/* ===== Footer ===== */
#footer-mount footer {
  border-top: 1px solid var(--border);
  padding: 32px 20px;
  text-align: center;
}

#footer-mount .footer-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

#footer-mount .footer-text {
  font-size: 13px;
  color: var(--text-secondary);
}

#footer-mount .footer-legal {
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
  background: none;
  border: none;
  font-family: var(--font-main);
  transition: color 0.2s;
}

#footer-mount .footer-legal:hover {
  color: var(--text-primary);
}

/* ===== 法律声明弹窗 ===== */
.legal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.legal-modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  width: 100%;
  max-width: 600px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.6);
}

.legal-header {
  padding: 24px 24px 16px;
  border-bottom: 1px solid var(--border);
}

.legal-header h2 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}

.legal-header p {
  font-size: 13px;
  color: var(--text-secondary);
}

.legal-body {
  padding: 20px 24px;
  overflow-y: auto;
  flex: 1;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.legal-body h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 16px 0 6px;
}

.legal-body p {
  margin-bottom: 10px;
}

.legal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: center;
}

.legal-footer .btn-primary {
  width: 100%;
  max-width: 280px;
}

/* ===== 页面返回导航 ===== */
.page-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 28px;
  flex-wrap: nowrap;
}

.page-nav .nav-link {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color 0.2s;
  white-space: nowrap;
}

.page-nav .nav-link:hover {
  color: var(--accent);
}

/* ===== 页面主体偏移（固定导航栏补偿） ===== */
.page-body {
  padding-top: 60px;
}

/* ===== Toast 提示组件 ===== */
@keyframes toastSlideIn {
  from { opacity: 0; transform: translateX(-50%) translateY(-16px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

.toast-global {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(-16px);
  z-index: 9999;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.25s, transform 0.25s;
}

.toast-global.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  animation: toastSlideIn 0.25s ease both;
}

.toast-global-inner {
  display: flex;
  align-items: stretch;
  background: #1e1e2e;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  white-space: nowrap;
  min-width: 200px;
}

.toast-bar {
  width: 4px;
  flex-shrink: 0;
}

.toast-bar.success { background: var(--success); }
.toast-bar.error   { background: var(--danger); }
.toast-bar.info    { background: var(--accent); }

.toast-msg {
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

/* ===== 自定义滚动条 ===== */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: #3a3a5a;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  body {
    font-size: 15px;
  }

  .container {
    padding: 0 16px;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    display: block;
  }

  #nav-mount .nav-logo {
    font-size: 14px;
  }

  #nav-mount .nav-links a {
    font-size: 13px;
  }

  #nav-mount .nav-links {
    gap: 14px;
  }

  .page-nav {
    gap: 12px;
  }

  .page-nav .nav-link {
    font-size: 13px;
  }
}