/* ============================================
   Theme System - 公共主题变量
   默认深色主题，html[data-theme="light"] 切换浅色
   ============================================ */

:root {
  /* === 背景色 === */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #1a1a24;
  --bg-elevated: #22222f;
  --bg-input: #1e1e2e;
  --bg-page: #0a0a0f;

  /* === 文字色 === */
  --text-primary: #ffffff;
  --text-secondary: #8b8b9e;
  --text-muted: #5a5a6e;
  --text-inverse: #0a0a0f;

  /* === 品牌色/强调色 === */
  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-hover: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.3);
  --accent-soft: rgba(99, 102, 241, 0.1);
  --accent-border: rgba(99, 102, 241, 0.3);
  --brand-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
  --brand-purple: #a855f7;
  --gradient-1: var(--brand-gradient);

  /* === 边框 === */
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);
  --border-focus: #818cf8;
  --divider: rgba(255, 255, 255, 0.06);

  /* === 功能色 === */
  --error: #ef4444;
  --success: #22c55e;
  --warning: #f59e0b;
  --info: #6366f1;

  /* === 按钮 === */
  --btn-primary-bg: var(--gradient-1);
  --btn-primary-text: #ffffff;
  --btn-secondary-bg: var(--bg-card);
  --btn-secondary-text: var(--text-primary);
  --btn-secondary-border: var(--border);

  /* === 提示Toast === */
  --toast-success-bg: #0e261b;
  --toast-success-text: #4ade80;
  --toast-success-border: rgba(34, 197, 94, 0.3);
  --toast-error-bg: #2c1317;
  --toast-error-text: #f87171;
  --toast-error-border: rgba(239, 68, 68, 0.3);
  --toast-info-bg: #171831;
  --toast-info-text: #a5b4fc;
  --toast-info-border: rgba(99, 102, 241, 0.3);

  /* === 交互/表面覆盖 === */
  --surface-hover: rgba(255, 255, 255, 0.04);
  --white-05: rgba(255, 255, 255, 0.05);
  --white-10: rgba(255, 255, 255, 0.1);
  --white-15: rgba(255, 255, 255, 0.15);

  /* === 阴影 === */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 24px 80px rgba(0, 0, 0, 0.5);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 8px 30px rgba(255, 255, 255, 0.1);
  --shadow-accent: 0 20px 60px rgba(99, 102, 241, 0.15);
  --btn-primary-shadow: 0 20px 40px var(--accent-glow);

  /* === 网格背景 === */
  --grid-line: rgba(255, 255, 255, 0.02);

  /* === 导航栏 === */
  --nav-bg: rgba(10, 10, 15, 0.8);
  --nav-border: var(--border);

  /* === 弹窗遮罩 === */
  --modal-overlay-bg: rgba(0, 0, 0, 0.7);
  --modal-close-bg: rgba(255, 255, 255, 0.05);
  --modal-close-hover-bg: rgba(255, 255, 255, 0.1);

  /* === 扫码刷新遮罩 === */
  --qr-overlay-bg: rgba(10, 10, 15, 0.85);

  /* === 主题切换图标颜色（深色模式：太阳） === */
  --theme-icon-color: #f59e0b;
  --theme-icon-bg: transparent;
}

/* === 浅色主题 === */
[data-theme="light"] {
  --bg-primary: #f5f5f7;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-elevated: #f9f9fb;
  --bg-input: #ffffff;
  --bg-page: #f5f5f7;

  --text-primary: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-muted: #aeaeb2;
  --text-inverse: #ffffff;

  --accent: #4f46e5;
  --accent-light: #6366f1;
  --accent-hover: #4338ca;
  --accent-glow: rgba(79, 70, 229, 0.2);
  --accent-soft: rgba(79, 70, 229, 0.08);
  --accent-border: rgba(79, 70, 229, 0.25);
  --brand-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
  --brand-purple: #a855f7;

  --border: #e5e5e5;
  --border-hover: #d1d1d6;
  --border-focus: #1d1d1f;
  --divider: #f0f0f0;

  --btn-primary-bg: #1a1a1a;
  --btn-primary-text: #ffffff;
  --btn-secondary-bg: #ffffff;
  --btn-secondary-text: #1d1d1f;
  --btn-secondary-border: #e5e5e5;

  --toast-success-bg: #ecfdf5;
  --toast-success-text: #059669;
  --toast-success-border: #a7f3d0;
  --toast-error-bg: #fef2f2;
  --toast-error-text: #dc2626;
  --toast-error-border: #fecaca;
  --toast-info-bg: #eef2ff;
  --toast-info-text: #4338ca;
  --toast-info-border: #c7d2fe;

  --surface-hover: rgba(0, 0, 0, 0.03);
  --white-05: rgba(0, 0, 0, 0.04);
  --white-10: rgba(0, 0, 0, 0.06);
  --white-15: rgba(0, 0, 0, 0.1);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
  --shadow-card: 0 4px 48px rgba(0, 0, 0, 0.06);
  --shadow-glow: 0 8px 24px rgba(0, 0, 0, 0.1);
  --shadow-accent: 0 12px 32px rgba(79, 70, 229, 0.15);
  --btn-primary-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);

  --grid-line: rgba(0, 0, 0, 0.03);

  --nav-bg: rgba(255, 255, 255, 0.85);
  --nav-border: rgba(0, 0, 0, 0.08);

  --modal-overlay-bg: rgba(0, 0, 0, 0.5);
  --modal-close-bg: rgba(0, 0, 0, 0.05);
  --modal-close-hover-bg: rgba(0, 0, 0, 0.1);

  --qr-overlay-bg: rgba(255, 255, 255, 0.88);

  /* === 主题切换图标颜色（浅色模式：月亮） === */
  --theme-icon-color: #6366f1;
}

/* === 语言切换按钮（与主题切换按钮尺寸一致） === */
.lang-switch-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--white-05);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all 0.25s ease;
  padding: 0;
  flex-shrink: 0;
  font-family: inherit;
}
.lang-switch-btn:hover {
  background: var(--white-10);
  color: var(--text-primary);
  border-color: var(--border-hover);
}

/* === 主题切换按钮 === */
.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--white-05);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.25s ease;
  padding: 0;
  flex-shrink: 0;
}
.theme-toggle-btn:hover {
  background: var(--white-10);
  color: var(--text-primary);
  border-color: var(--border-hover);
}
.theme-toggle-btn .theme-toggle-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.theme-toggle-btn svg {
  width: 18px;
  height: 18px;
  transition: transform 0.4s ease;
  display: block;
}
.theme-toggle-btn:hover svg {
  transform: rotate(25deg);
}
/* Sun icon: filled warm core + rays in same color */
.theme-toggle-btn svg .sun-core {
  fill: var(--theme-icon-color);
  transition: fill 0.3s ease;
}
.theme-toggle-btn svg .sun-rays {
  stroke: var(--theme-icon-color);
  stroke-width: 2;
  transition: stroke 0.3s ease;
}
/* Moon icon: filled crescent */
.theme-toggle-btn svg .moon-fill {
  fill: var(--theme-icon-color);
  transition: fill 0.3s ease;
}

/* === 导航栏通用组件样式 === */
.nav-user { display: flex; align-items: center; gap: 10px; flex-wrap: nowrap; white-space: nowrap; }
.nav-hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  color: var(--text-primary);
  padding: 0;
  flex-shrink: 0;
  transition: all 0.25s ease;
}
.nav-hamburger:hover {
  background: var(--white-05);
  border-color: var(--border-hover);
}
.nav-hamburger svg {
  width: 22px;
  height: 22px;
  display: block;
}
.nav-cta {
  padding: 6px 16px;
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  border: none;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: var(--btn-primary-shadow); }
.nav-user-link { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text-primary); }
.nav-user-name { font-size: 14px; font-weight: 500; }
.nav-user-avatar { width: 34px; height: 34px; background: var(--brand-gradient); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 600; flex-shrink: 0; }
.theme-toggle-wrap { display: inline-flex; align-items: center; }

/* === 移动端菜单 === */
.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 199;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.mobile-menu-overlay.show {
  opacity: 1;
  visibility: visible;
}
.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  width: min(320px, 85vw);
  height: 100vh;
  background: var(--bg-card);
  border-left: 1px solid var(--border);
  z-index: 200;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
}
.mobile-menu.show {
  transform: translateX(0);
}
.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.mobile-menu-header .logo {
  font-size: 18px;
}
.mobile-menu-header .logo-icon {
  width: 30px;
  height: 30px;
  font-size: 14px;
}
.mobile-menu-close {
  width: 36px;
  height: 36px;
  background: var(--white-05);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: all 0.25s ease;
}
.mobile-menu-close:hover {
  background: var(--white-10);
  color: var(--text-primary);
  border-color: var(--border-hover);
}
.mobile-menu-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px 0;
}
.mobile-menu-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.mobile-menu-links li {
  margin: 0;
}
.mobile-menu-links a,
.mobile-menu-links button {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 14px 20px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  transition: all 0.2s ease;
}
.mobile-menu-links a:hover,
.mobile-menu-links a.active,
.mobile-menu-links button:hover {
  background: var(--white-05);
  color: var(--text-primary);
}
.mobile-menu-links a.active {
  border-left: 3px solid var(--accent);
  padding-left: 17px;
}
.mobile-menu-icon {
  width: 22px;
  text-align: center;
  font-size: 16px;
}
.mobile-menu-divider {
  height: 1px;
  background: var(--border);
  margin: 12px 16px;
}
.mobile-menu-user {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.mobile-menu-avatar {
  width: 40px;
  height: 40px;
  background: var(--brand-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  flex-shrink: 0;
}
.mobile-menu-user-info {
  flex: 1;
  min-width: 0;
}
.mobile-menu-user-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.mobile-menu-user-email {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.mobile-menu-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
}

/* === 移动端浮动控制按钮（语言 + 主题）=== */
.mobile-float-controls {
  position: fixed;
  right: 16px;
  bottom: 16px;
  display: none;
  flex-direction: column;
  gap: 10px;
  z-index: 150;
}
.mobile-float-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: all 0.25s ease;
  padding: 0;
  font-family: inherit;
  backdrop-filter: blur(8px);
}
.mobile-float-btn:hover {
  background: var(--white-05);
  color: var(--text-primary);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}
.mobile-float-lang {
  font-size: 13px;
  font-weight: 700;
}
.mobile-float-theme {
  font-size: 18px;
}

/* === 个人信息卡片内退出按钮 === */
.logout-footer {
  margin-top: 24px;
  text-align: left;
}
.logout-footer-btn {
  padding: 10px 32px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s;
  font-family: inherit;
}
.logout-footer-btn:hover {
  border-color: var(--error);
  color: var(--error);
  background: rgba(239, 68, 68, 0.05);
}

/* === 平滑过渡 === */
body,
nav,
.bg-grid,
.tool-card,
.feature,
.btn-primary,
.btn-secondary,
.btn-download,
.btn-license,
.hero-badge,
.site-modal,
.modal,
.auth-card,
.nav-cta,
.nav-hamburger,
.mobile-menu,
.mobile-menu-close,
.feedback-type-btn,
.faq-question,
.doc-highlight,
input,
button,
textarea,
select {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* === 移动端响应式 === */
@media (max-width: 768px) {
  nav { padding: 14px 20px; }
  nav .nav-links,
  nav .nav-user > .nav-user-link,
  nav .nav-user > .lang-switch-btn,
  nav .nav-user > .theme-toggle-wrap,
  nav .nav-user > .nav-cta {
    display: none !important;
  }
  nav .nav-hamburger {
    display: flex !important;
  }
  .mobile-float-controls {
    display: flex;
  }
}