/* ============================================
   运小助 · 爱莱客AI工具箱 — 样式文件
   设计系统：Cohere AI Design System
   ============================================ */

/* === 1. CSS 设计令牌 === */
:root {
  --color-primary: #5B6EF5;
  --color-primary-hover: #4D5FE0;
  --color-primary-active: #4353CB;
  --color-primary-light: #F0F1FF;
  --color-primary-subtle: #E0E2FF;
  --color-accent: #45B7D1;
  --color-accent-hover: #38A5BF;
  --color-accent-light: #ECFEFF;
  --color-gradient-start: #6C5CE7;
  --gradient-primary: linear-gradient(135deg, #6C5CE7 0%, #45B7D1 100%);
  --gradient-primary-hover: linear-gradient(135deg, #5B6EF5 0%, #38A5BF 100%);
  --gradient-warm: linear-gradient(135deg, #A29BFE 0%, #74B9FF 100%);
  --gradient-surface: linear-gradient(180deg, #F8F7FF 0%, #FFFFFF 100%);
  --color-bg: #FAFAF9;
  --color-surface: #F5F5F4;
  --color-surface-raised: #FFFFFF;
  --color-border: #E7E5E4;
  --color-border-strong: #D6D3D1;
  --color-text-primary: #1C1917;
  --color-text-secondary: #57534E;
  --color-text-tertiary: #78716C;
  --color-text-muted: #87807A;
  --color-text-inverse: #FFFFFF;
  --color-success: #10B981;
  --color-success-light: #ECFDF5;
  --color-warning: #F59E0B;
  --color-warning-light: #FFFBEB;
  --color-danger: #EF4444;
  --color-danger-light: #FEF2F2;
  --color-info: #3B82F6;
  --color-info-light: #EFF6FF;
  --font-heading: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --font-mono: "Cascadia Code", "JetBrains Mono", "Fira Code", "Source Code Pro", "PingFang SC", "Microsoft YaHei", monospace;
  --space-3xs: 2px;
  --space-2xs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;
  --radius-3xl: 24px;
  --radius-full: 9999px;
  --shadow-subtle: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-raised: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-floating: 0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-overlay: 0 8px 24px rgba(0,0,0,0.12), 0 4px 8px rgba(0,0,0,0.06);
  --shadow-glow: 0 0 20px rgba(91,110,245,0.25);
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 600;
  --transition-fast: 0.15s ease;
  --transition-base: 0.2s ease;
  --transition-slow: 0.3s ease;
}

/* === 2. 重置与基础样式 === */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-body);
  font-size: 1rem; line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  min-height: 100vh; overflow-x: hidden;
}
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-primary-hover); }
img { max-width: 100%; display: block; }
.page { display: none; min-height: 100vh; animation: fadeIn 0.3s ease; }
.page.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* === 3. 布局组件 === */
.app-layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 240px; min-width: 240px;
  background: var(--color-surface-raised);
  border-right: 1px solid var(--color-border);
  display: flex; flex-direction: column;
  position: fixed; top: 0; left: 0; bottom: 0;
  z-index: var(--z-sticky);
  transition: transform var(--transition-base);
}
.sidebar-logo {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  display: flex; align-items: center; gap: var(--space-sm);
}
.sidebar-logo-icon {
  width: 36px; height: 36px; border-radius: var(--radius-md);
  background: var(--gradient-primary);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.sidebar-logo-text {
  font-size: 1rem; font-weight: 600; color: var(--color-text-primary); line-height: 1.3;
}
.sidebar-logo-text span {
  display: block; font-size: 0.6875rem; font-weight: 400;
  color: var(--color-text-tertiary); letter-spacing: 0.03em;
}
.sidebar-nav { flex: 1; padding: var(--space-sm); overflow-y: auto; }
.sidebar-nav-item {
  display: flex; align-items: center; gap: var(--space-sm);
  height: 40px; padding: 0 var(--space-md); border-radius: var(--radius-md);
  color: var(--color-text-secondary); font-size: 0.875rem; font-weight: 400;
  cursor: pointer; transition: all var(--transition-fast);
  margin-bottom: 2px; user-select: none;
}
.sidebar-nav-item:hover { background: var(--color-surface); color: var(--color-text-primary); }
.sidebar-nav-item.active {
  background: var(--color-primary-light); color: var(--color-primary); font-weight: 500;
}
.sidebar-nav-item.active::before {
  content: ''; position: absolute; left: -4px; top: 8px; bottom: 8px;
  width: 3px; border-radius: 0 3px 3px 0; background: var(--gradient-primary);
}
.sidebar-nav-item svg { width: 18px; height: 18px; flex-shrink: 0; stroke-width: 1.5; }
.sidebar-footer {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--color-border);
  display: flex; align-items: center; gap: var(--space-sm);
}
.sidebar-avatar {
  width: 36px; height: 36px; border-radius: var(--radius-full);
  background: var(--gradient-warm);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-inverse); font-size: 0.875rem; font-weight: 600; flex-shrink: 0;
}
.sidebar-user-info { flex: 1; min-width: 0; }
.sidebar-user-name {
  font-size: 0.8125rem; font-weight: 500; color: var(--color-text-primary);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.sidebar-user-plan { font-size: 0.6875rem; color: var(--color-text-muted); }
.sidebar-logout {
  width: 32px; height: 32px; border-radius: var(--radius-md);
  border: none; background: transparent; color: var(--color-text-muted);
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: all var(--transition-fast); flex-shrink: 0;
}
.sidebar-logout:hover { background: var(--color-surface); color: var(--color-danger); }
.sidebar-logout svg { width: 16px; height: 16px; stroke-width: 1.5; }

.content-area { flex: 1; margin-left: 240px; min-height: 100vh; background: var(--color-bg); }
.content-inner { padding: var(--space-xl); max-width: 100%; }
.content-inner.narrow { max-width: 960px; }
.page-header { margin-bottom: var(--space-xl); }
.page-title { font-size: 1.5rem; font-weight: 600; line-height: 1.35; color: var(--color-text-primary); }
.page-subtitle { font-size: 0.875rem; color: var(--color-text-tertiary); margin-top: var(--space-2xs); line-height: 1.55; }

/* Mobile sidebar */
.sidebar-toggle {
  display: none;
  position: fixed; top: var(--space-md); left: var(--space-md);
  width: 40px; height: 40px; border-radius: var(--radius-md);
  border: 1px solid var(--color-border); background: var(--color-surface-raised);
  cursor: pointer; align-items: center; justify-content: center;
  z-index: calc(var(--z-sticky) + 1);
}
.sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.3); z-index: calc(var(--z-sticky) - 1); }
.sidebar-overlay.show { display: block; }

@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-toggle { display: flex; }
  .content-area { margin-left: 0; padding-top: 60px; }
  .content-inner { padding: var(--space-md); }
  .tools-grid { grid-template-columns: 1fr !important; }
  .pricing-grid { grid-template-columns: 1fr !important; }
  .form-row { flex-direction: column; }
  .profile-layout { flex-direction: column; }
}

/* === 4. UI 组件 === */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: var(--space-xs); font-family: var(--font-body);
  font-size: 0.875rem; font-weight: 500; line-height: 1;
  border: none; cursor: pointer; transition: all var(--transition-base);
  white-space: nowrap; user-select: none;
}
.btn-primary {
  background: var(--gradient-primary); color: var(--color-text-inverse);
  border-radius: var(--radius-lg); padding: 12px 28px; height: 44px;
}
.btn-primary:hover {
  background: var(--gradient-primary-hover); transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(91,110,245,0.3);
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 1px 3px rgba(91,110,245,0.2); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }
.btn-secondary {
  background: var(--color-surface-raised); color: var(--color-primary);
  border: 1.5px solid var(--color-primary); border-radius: var(--radius-lg);
  padding: 12px 28px; height: 44px;
}
.btn-secondary:hover { background: var(--color-primary-light); border-color: var(--color-primary-hover); }
.btn-ghost {
  background: transparent; color: var(--color-text-secondary);
  border: none; border-radius: var(--radius-lg); padding: 12px 20px; height: 44px;
}
.btn-ghost:hover { background: var(--color-surface); color: var(--color-text-primary); }
.btn-sm { height: 36px; padding: 8px 18px; font-size: 0.8125rem; border-radius: var(--radius-md); }
.btn-lg { height: 52px; padding: 14px 36px; font-size: 1rem; border-radius: var(--radius-lg); }
.btn svg { width: 16px; height: 16px; stroke-width: 1.5; }

.card {
  background: var(--color-surface-raised); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl); padding: var(--space-lg);
  transition: all 0.25s ease;
}
.card:hover { box-shadow: var(--shadow-floating); transform: translateY(-2px); }

.input-group { margin-bottom: var(--space-md); }
.input-label {
  display: block; font-size: 0.8125rem; font-weight: 500;
  color: var(--color-text-secondary); margin-bottom: var(--space-xs); line-height: 1.5;
}
.input {
  width: 100%; height: 44px; padding: 0 var(--space-md);
  background: var(--color-surface-raised);
  border: 1.5px solid var(--color-border); border-radius: var(--radius-lg);
  font-family: var(--font-body); font-size: 1rem;
  color: var(--color-text-primary); outline: none; transition: all var(--transition-fast);
}
.input::placeholder { color: var(--color-text-muted); }
.input:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(91,110,245,0.15); }
.input.error { border-color: var(--color-danger); box-shadow: 0 0 0 3px rgba(239,68,68,0.12); }
.input:disabled { background: var(--color-surface); opacity: 0.6; }
textarea.input { min-height: 100px; padding: var(--space-sm) var(--space-md); resize: vertical; line-height: 1.6; }
.input-with-btn { display: flex; gap: var(--space-xs); }
.input-with-btn .input { flex: 1; }

.select { cursor: pointer; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2378716C' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }

.tag {
  display: inline-flex; align-items: center; padding: 4px 12px;
  border-radius: var(--radius-full); font-size: 0.75rem;
  font-weight: 500; line-height: 1.5; letter-spacing: 0.02em;
}
.tag-default { background: var(--color-primary-light); color: var(--color-primary); }
.tag-success { background: var(--color-success-light); color: var(--color-success); }
.tag-warning { background: var(--color-warning-light); color: var(--color-warning); }
.tag-danger  { background: var(--color-danger-light);  color: var(--color-danger); }
.tag-info    { background: var(--color-info-light);     color: var(--color-info); }
.tag-neutral { background: var(--color-surface); color: var(--color-text-secondary); border: 1px solid var(--color-border); }

.table-wrapper { overflow-x: auto; border: 1px solid var(--color-border); border-radius: var(--radius-xl); background: var(--color-surface-raised); }
table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
thead { background: var(--color-surface); }
th {
  text-align: left; padding: var(--space-sm) var(--space-md);
  font-weight: 500; color: var(--color-text-tertiary); font-size: 0.75rem;
  letter-spacing: 0.02em; text-transform: uppercase; border-bottom: 1px solid var(--color-border);
}
td { padding: var(--space-md); color: var(--color-text-primary); border-bottom: 1px solid var(--color-border); vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--color-primary-light); }

.search-bar { position: relative; }
.search-bar .input { padding-left: 40px; }
.search-bar svg {
  position: absolute; left: var(--space-md); top: 50%;
  transform: translateY(-50%); width: 18px; height: 18px;
  color: var(--color-text-muted); stroke-width: 1.5;
}
.filter-bar { display: flex; gap: var(--space-xs); flex-wrap: wrap; }
.filter-chip {
  padding: var(--space-xs) var(--space-md); border-radius: var(--radius-full);
  font-size: 0.8125rem; font-weight: 400; color: var(--color-text-secondary);
  background: var(--color-surface-raised); border: 1px solid var(--color-border);
  cursor: pointer; transition: all var(--transition-fast); line-height: 1.5;
}
.filter-chip:hover { background: var(--color-surface); border-color: var(--color-border-strong); }
.filter-chip.active { background: var(--color-primary-light); color: var(--color-primary); border-color: var(--color-primary); font-weight: 500; }

.pagination { display: flex; align-items: center; justify-content: center; gap: var(--space-2xs); margin-top: var(--space-xl); }
.pagination-btn {
  width: 36px; height: 36px; border-radius: var(--radius-md);
  border: 1px solid var(--color-border); background: var(--color-surface-raised);
  color: var(--color-text-secondary); font-size: 0.8125rem;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; transition: all var(--transition-fast);
}
.pagination-btn:hover { background: var(--color-surface); border-color: var(--color-border-strong); }
.pagination-btn.active { background: var(--gradient-primary); color: var(--color-text-inverse); border-color: transparent; }
.pagination-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.stepper { display: flex; align-items: center; justify-content: center; gap: var(--space-xs); margin-bottom: var(--space-2xl); }
.stepper-step { display: flex; align-items: center; gap: var(--space-xs); }
.stepper-circle {
  width: 32px; height: 32px; border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8125rem; font-weight: 600;
  background: var(--color-surface); color: var(--color-text-muted);
  border: 2px solid var(--color-border); transition: all var(--transition-base);
}
.stepper-step.active .stepper-circle { background: var(--gradient-primary); color: var(--color-text-inverse); border-color: transparent; }
.stepper-step.done .stepper-circle { background: var(--color-success); color: var(--color-text-inverse); border-color: transparent; }
.stepper-label { font-size: 0.75rem; color: var(--color-text-muted); white-space: nowrap; }
.stepper-step.active .stepper-label { color: var(--color-primary); font-weight: 500; }
.stepper-step.done .stepper-label { color: var(--color-success); }
.stepper-line { width: 48px; height: 2px; background: var(--color-border); border-radius: 2px; transition: background var(--transition-base); }
.stepper-line.done { background: var(--color-success); }

.checkbox-group { display: inline-flex; align-items: center; gap: var(--space-xs); font-size: 0.8125rem; color: var(--color-text-secondary); cursor: pointer; }
.checkbox { width: 16px; height: 16px; accent-color: var(--color-primary); cursor: pointer; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); }
.form-actions { display: flex; gap: var(--space-sm); margin-top: var(--space-xl); }

.text-center { text-align: center; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.flex-center { display: flex; align-items: center; }
.gap-sm { gap: var(--space-sm); }

/* Toast */
.toast {
  position: fixed; bottom: var(--space-xl); left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--color-text-primary); color: var(--color-text-inverse);
  padding: var(--space-sm) var(--space-lg); border-radius: var(--radius-lg);
  font-size: 0.875rem; box-shadow: var(--shadow-floating);
  z-index: var(--z-toast); transition: transform 0.3s ease; pointer-events: none;
}
.toast.show { transform: translateX(-50%) translateY(0); }
@keyframes spin { to { transform: rotate(360deg); } }
.spinner { width: 16px; height: 16px; border: 2px solid var(--color-primary); border-top-color: transparent; border-radius: 50%; animation: spin 0.8s linear infinite; }

/* === Modal === */
.modal-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.4); z-index: var(--z-modal);
  align-items: center; justify-content: center;
  animation: fadeIn 0.2s ease;
}
.modal-overlay.show { display: flex; }
.modal {
  background: var(--color-surface-raised); border-radius: var(--radius-2xl);
  padding: var(--space-2xl); max-width: 480px; width: 90%;
  box-shadow: var(--shadow-overlay); max-height: 90vh; overflow-y: auto;
}
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-lg); }
.modal-header h2 { font-size: 1.25rem; font-weight: 600; }
.modal-close {
  width: 32px; height: 32px; border-radius: var(--radius-md);
  border: none; background: transparent; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-muted); transition: all var(--transition-fast);
}
.modal-close:hover { background: var(--color-surface); color: var(--color-text-primary); }

/* === 5. 页面专属样式 === */

/* 首页 - Landing */
.landing-hero {
  background: linear-gradient(135deg, #1C1917 0%, #292524 50%, #1C1917 100%);
  color: var(--color-text-inverse); min-height: 100vh;
  position: relative; overflow: hidden;
}
.landing-nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-lg) var(--space-2xl); position: relative; z-index: 2;
}
.landing-brand { display: flex; align-items: center; gap: var(--space-sm); }
.landing-brand-icon {
  width: 36px; height: 36px; border-radius: var(--radius-md);
  background: var(--gradient-primary); display: flex;
  align-items: center; justify-content: center;
}
.landing-brand-name { font-size: 1rem; font-weight: 600; }
.landing-nav-links { display: flex; align-items: center; gap: var(--space-lg); }
.landing-nav-links a { color: var(--color-text-muted); font-size: 0.875rem; transition: color var(--transition-fast); }
.landing-nav-links a:hover { color: var(--color-text-inverse); }
.hero-section {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: var(--space-2xl); min-height: calc(100vh - 80px);
  position: relative; z-index: 2;
}
.hero-bg-orb {
  position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.15; pointer-events: none;
}
.hero-bg-orb-1 { width: 400px; height: 400px; background: var(--color-primary); top: -100px; right: -80px; }
.hero-bg-orb-2 { width: 350px; height: 350px; background: var(--color-accent); bottom: -80px; left: -60px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: var(--space-xs);
  padding: 6px 16px; border-radius: var(--radius-full);
  background: rgba(91,110,245,0.15); color: #A29BFE;
  font-size: 0.75rem; font-weight: 500; margin-bottom: var(--space-xl);
  backdrop-filter: blur(8px); border: 1px solid rgba(91,110,245,0.2);
}
.hero-title { font-size: 3.5rem; font-weight: 700; line-height: 1.15; margin-bottom: var(--space-lg); letter-spacing: -0.02em; }
.hero-title-gradient { background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-desc { font-size: 1.125rem; color: #A8A29E; max-width: 520px; line-height: 1.7; margin-bottom: var(--space-2xl); }
.hero-actions { display: flex; gap: var(--space-md); }
.features-section {
  padding: var(--space-4xl) var(--space-2xl);
  max-width: 1200px; margin: 0 auto;
}
.features-header { text-align: center; margin-bottom: var(--space-3xl); }
.features-header h2 { font-size: 2rem; font-weight: 600; color: var(--color-text-primary); margin-bottom: var(--space-sm); }
.features-header p { font-size: 1rem; color: var(--color-text-tertiary); }
.features-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--space-lg); }
@media (max-width: 1200px) { .features-grid { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 992px) { .features-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 600px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
.feature-card {
  background: var(--color-surface-raised); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl); padding: var(--space-xl);
  transition: all 0.25s ease; cursor: default;
}
.feature-card:hover { box-shadow: var(--shadow-floating); transform: translateY(-4px); }
.feature-card-icon {
  width: 48px; height: 48px; border-radius: var(--radius-lg);
  background: var(--color-primary-light); display: flex;
  align-items: center; justify-content: center; margin-bottom: var(--space-md);
  color: var(--color-primary);
}
.feature-card-icon svg { width: 24px; height: 24px; stroke-width: 1.5; }
.feature-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: var(--space-xs); color: var(--color-text-primary); }
.feature-card p { font-size: 0.8125rem; color: var(--color-text-tertiary); line-height: 1.6; }
.cta-section {
  text-align: center; padding: var(--space-4xl) var(--space-2xl);
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-accent-light) 100%);
}
.cta-section h2 { font-size: 2rem; font-weight: 600; color: var(--color-text-primary); margin-bottom: var(--space-sm); }
.cta-section p { color: var(--color-text-tertiary); margin-bottom: var(--space-xl); }

/* Auth Pages */
.auth-page { display: flex; min-height: 100vh; }
.auth-left {
  flex: 1; background: linear-gradient(135deg, #1C1917 0%, #292524 100%);
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden; padding: var(--space-2xl);
}
.auth-left-deco {
  position: absolute; border-radius: 50%; pointer-events: none;
}
.auth-left-deco-1 { width: 300px; height: 300px; background: var(--color-primary); opacity: 0.1; top: -80px; right: -60px; filter: blur(60px); }
.auth-left-deco-2 { width: 250px; height: 250px; background: var(--color-accent); opacity: 0.08; bottom: -60px; left: -40px; filter: blur(60px); }
.auth-left-deco-3 { width: 150px; height: 150px; background: var(--gradient-warm); opacity: 0.06; top: 50%; left: 50%; transform: translate(-50%, -50%); filter: blur(80px); }
.auth-left-content { position: relative; z-index: 1; text-align: center; color: var(--color-text-inverse); }
.auth-left-icon {
  width: 64px; height: 64px; border-radius: var(--radius-xl);
  background: var(--gradient-primary); display: flex;
  align-items: center; justify-content: center; margin: 0 auto var(--space-lg);
}
.auth-left-icon svg { width: 28px; height: 28px; stroke-width: 1.5; }
.auth-left-content h1 { font-size: 2rem; font-weight: 700; margin-bottom: var(--space-sm); }
.auth-left-content p { font-size: 0.875rem; color: #A8A29E; }
.auth-right {
  flex: 1; display: flex; align-items: center; justify-content: center;
  padding: var(--space-2xl);
}
.auth-form-card {
  width: 100%; max-width: 420px;
}
.auth-form-card h2 { font-size: 1.5rem; font-weight: 600; color: var(--color-text-primary); margin-bottom: var(--space-2xs); }
.auth-subtitle { font-size: 0.8125rem; color: var(--color-text-tertiary); margin-bottom: var(--space-xl); }
.auth-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-lg); }
.auth-divider { text-align: center; font-size: 0.75rem; color: var(--color-text-muted); margin: var(--space-lg) 0; position: relative; }
.auth-divider::before, .auth-divider::after {
  content: ''; position: absolute; top: 50%; width: calc(50% - 60px);
  height: 1px; background: var(--color-border);
}
.auth-divider::before { left: 0; }
.auth-divider::after { right: 0; }
.auth-social { display: flex; gap: var(--space-sm); }
.auth-social-btn {
  flex: 1; display: flex; align-items: center; justify-content: center;
  gap: var(--space-xs); height: 44px; border-radius: var(--radius-lg);
  border: 1px solid var(--color-border); background: var(--color-surface-raised);
  font-size: 0.8125rem; color: var(--color-text-secondary); cursor: pointer;
  transition: all var(--transition-fast);
}
.auth-social-btn:hover { background: var(--color-surface); border-color: var(--color-border-strong); }
.auth-footer { text-align: center; margin-top: var(--space-lg); font-size: 0.8125rem; color: var(--color-text-secondary); }

/* Forgot Password */
.forgot-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: var(--space-md); }
.forgot-card { width: 100%; max-width: 440px; background: var(--color-surface-raised); border: 1px solid var(--color-border); border-radius: var(--radius-2xl); padding: var(--space-2xl); box-shadow: var(--shadow-raised); }
.forgot-card h2 { font-size: 1.25rem; font-weight: 600; color: var(--color-text-primary); text-align: center; margin-bottom: var(--space-xs); }

/* Tools Grid */
.tools-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-lg); }
.tool-card {
  background: var(--color-surface-raised); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl); overflow: hidden;
  transition: all 0.25s ease; position: relative;
}
.tool-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 4px; background: var(--gradient-primary);
}
.tool-card:hover { box-shadow: var(--shadow-floating); transform: translateY(-2px); }
.tool-card-thumb {
  height: 140px; background: var(--gradient-surface);
  display: flex; align-items: center; justify-content: center;
}
.tool-card-thumb svg { width: 48px; height: 48px; color: var(--color-primary); opacity: 0.4; stroke-width: 1.5; }
.tool-card-body { padding: var(--space-lg); }
.tool-card-name { font-size: 1rem; font-weight: 600; color: var(--color-text-primary); margin-bottom: var(--space-2xs); }
.tool-card-desc {
  font-size: 0.8125rem; color: var(--color-text-tertiary); line-height: 1.55;
  margin-bottom: var(--space-md); display: -webkit-box; -webkit-line-clamp: 2;
  -webkit-box-orient: vertical; overflow: hidden;
}
.tool-card-footer { display: flex; align-items: center; justify-content: space-between; }
.tool-card-users { display: flex; align-items: center; gap: var(--space-2xs); font-size: 0.75rem; color: var(--color-text-muted); }
.tool-card-users svg { width: 14px; height: 14px; }

/* Tool Use Page */
.tool-use-header { margin-bottom: var(--space-xl); }
.tool-use-name { font-size: 1.25rem; font-weight: 600; color: var(--color-text-primary); margin-bottom: var(--space-2xs); }
.tool-use-desc { font-size: 0.875rem; color: var(--color-text-tertiary); }
.tool-use-form { background: var(--color-surface-raised); border: 1px solid var(--color-border); border-radius: var(--radius-xl); padding: var(--space-lg); margin-bottom: var(--space-lg); }
.tool-use-form h3 { font-size: 0.875rem; font-weight: 600; color: var(--color-text-primary); margin-bottom: var(--space-md); }
.tool-use-actions { margin-bottom: var(--space-xl); }
.tool-use-result { background: var(--color-surface-raised); border: 1px solid var(--color-border); border-radius: var(--radius-xl); padding: var(--space-lg); }
.tool-use-result h3 { font-size: 0.875rem; font-weight: 600; color: var(--color-text-primary); margin-bottom: var(--space-md); }
.result-placeholder { text-align: center; padding: var(--space-3xl) var(--space-lg); color: var(--color-text-muted); }
.result-placeholder-icon { margin-bottom: var(--space-md); }
.result-placeholder-icon svg { width: 48px; height: 48px; opacity: 0.3; }
.result-placeholder p { font-size: 0.875rem; }
.result-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-md); }
.result-image-placeholder { aspect-ratio: 1; background: var(--gradient-surface); border-radius: var(--radius-xl); display: flex; align-items: center; justify-content: center; border: 1px solid var(--color-border); }
.result-actions { display: flex; gap: var(--space-sm); margin-top: var(--space-md); }
.progress-bar { height: 6px; background: var(--color-surface); border-radius: var(--radius-full); overflow: hidden; }
.progress-bar-fill { height: 100%; background: var(--gradient-primary); border-radius: var(--radius-full); transition: width 0.3s ease; }
.skeleton { background: linear-gradient(90deg, var(--color-surface) 25%, var(--color-border) 50%, var(--color-surface) 75%); background-size: 200% 100%; animation: shimmer 1.5s infinite; border-radius: var(--radius-xl); }
.skeleton-xl { height: 240px; }
@keyframes shimmer { 0% { background-position: -200% 0; } 100% { background-position: 200% 0; } }

/* Pricing */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-lg); max-width: 960px; margin: 0 auto; }
.mt-2xs { margin-top: var(--space-2xs); }
.input-group-no-mb { margin-bottom: 0; }
.search-filter-bar { display: flex; gap: var(--space-md); margin-bottom: var(--space-xl); flex-wrap: wrap; align-items: center; }
.search-filter-bar .search-bar { flex: 1; min-width: 240px; }

.pricing-card { background: var(--color-surface-raised); border: 1px solid var(--color-border); border-radius: var(--radius-xl); padding: var(--space-xl); display: flex; flex-direction: column; position: relative; transition: all 0.25s ease; }
.pricing-card:hover { box-shadow: var(--shadow-floating); }
.pricing-card.recommended { border-color: var(--color-primary); box-shadow: var(--shadow-raised); }
.pricing-card.recommended::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--gradient-primary); border-radius: var(--radius-xl) var(--radius-xl) 0 0; }
.pricing-badge { position: absolute; top: -12px; right: var(--space-lg); padding: var(--space-2xs) var(--space-md); border-radius: var(--radius-full); background: var(--gradient-primary); color: var(--color-text-inverse); font-size: 0.6875rem; font-weight: 500; }
.pricing-tier { font-size: 0.75rem; font-weight: 500; color: var(--color-primary); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: var(--space-xs); }
.pricing-name { font-size: 1.25rem; font-weight: 600; color: var(--color-text-primary); margin-bottom: var(--space-md); }
.pricing-price { margin-bottom: var(--space-lg); }
.pricing-amount { font-size: 2.5rem; font-weight: 700; color: var(--color-text-primary); line-height: 1; }
.pricing-period { font-size: 0.8125rem; color: var(--color-text-muted); margin-left: var(--space-2xs); }
.pricing-features { list-style: none; margin-bottom: var(--space-xl); flex: 1; }
.pricing-features li { display: flex; align-items: center; gap: var(--space-xs); font-size: 0.8125rem; color: var(--color-text-secondary); padding: var(--space-xs) 0; line-height: 1.5; }
.pricing-features li svg { width: 16px; height: 16px; stroke-width: 2; flex-shrink: 0; }
.pricing-features li svg { color: var(--color-success); }
.pricing-features li.disabled { color: var(--color-text-muted); }
.pricing-features li.disabled svg { color: var(--color-text-muted); opacity: 0.4; }

/* Profile */
.profile-layout { display: flex; gap: var(--space-xl); }
.sub-nav { display: flex; flex-direction: column; gap: var(--space-2xs); min-width: 200px; }
.sub-nav-item {
  display: flex; align-items: center; gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md); border-radius: var(--radius-md);
  font-size: 0.875rem; color: var(--color-text-secondary);
  cursor: pointer; transition: all var(--transition-fast);
}
.sub-nav-item:hover { background: var(--color-surface); color: var(--color-text-primary); }
.sub-nav-item.active { background: var(--color-primary-light); color: var(--color-primary); font-weight: 500; }
.sub-nav-item svg { width: 18px; height: 18px; }
.profile-form { flex: 1; max-width: 640px; }
.profile-avatar-section { display: flex; align-items: center; gap: var(--space-lg); margin-bottom: var(--space-xl); }
.avatar-upload {
  width: 80px; height: 80px; border-radius: var(--radius-full);
  border: 2px dashed var(--color-border); display: flex;
  align-items: center; justify-content: center; cursor: pointer;
  color: var(--color-text-muted); transition: all var(--transition-fast);
}
.avatar-upload:hover { border-color: var(--color-primary); color: var(--color-primary); background: var(--color-primary-light); }
.avatar-upload svg { width: 28px; height: 28px; }
.profile-avatar-info h3 { font-size: 0.875rem; font-weight: 500; color: var(--color-text-primary); margin-bottom: var(--space-2xs); }
.profile-avatar-info p { font-size: 0.75rem; color: var(--color-text-muted); }

/* Key Config */
.warning-card { display: flex; align-items: flex-start; gap: var(--space-sm); padding: var(--space-md); background: var(--color-warning-light); border: 1px solid #FDE68A; border-radius: var(--radius-lg); font-size: 0.8125rem; color: var(--color-text-secondary); line-height: 1.6; }
.warning-card svg { width: 20px; height: 20px; flex-shrink: 0; margin-top: 1px; color: var(--color-warning); }
.key-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-lg); }
.key-table-name { display: flex; align-items: center; gap: var(--space-xs); font-weight: 500; }
.key-table-name svg { width: 16px; height: 16px; color: var(--color-primary); }
.key-display { display: flex; align-items: center; gap: var(--space-xs); }
.key-value { font-family: var(--font-mono); font-size: 0.8125rem; color: var(--color-text-secondary); }
.key-toggle-btn, .key-copy-btn { width: 28px; height: 28px; border: none; background: transparent; cursor: pointer; border-radius: var(--radius-sm); color: var(--color-text-muted); display: flex; align-items: center; justify-content: center; transition: all var(--transition-fast); }
.key-toggle-btn:hover, .key-copy-btn:hover { background: var(--color-surface); color: var(--color-text-primary); }
.key-toggle-btn svg, .key-copy-btn svg { width: 16px; height: 16px; }

.status-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.status-dot.active { background: var(--color-success); }
.status-dot.inactive { background: var(--color-text-muted); }

/* Records */
.records-filters { display: flex; gap: var(--space-md); margin-bottom: var(--space-lg); flex-wrap: wrap; }
.records-filters .search-bar { flex: 1; min-width: 200px; }
.records-filters .search-bar .input { padding-left: 40px; }

/* ===== Focus Visible ===== */
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }

/* === Print === */
@media print {
  .sidebar, .landing-nav, .hero-bg-orb, .btn, .auth-left,
  .filter-bar, .search-bar, .pagination, .sidebar-logout,
  .cta-section, .auth-social, .sidebar-footer { display: none !important; }
  .content-area { margin-left: 0 !important; }
  .page { display: block !important; page-break-after: always; }
}

/* Responsive Extras */
@media (max-width: 768px) {
  .features-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 2rem; }
  .auth-page { flex-direction: column; }
  .auth-left { display: none; }
  .auth-right { padding: var(--space-lg); }
  .landing-nav-links a:not(:last-child) { display: none; }
  .pricing-grid { max-width: 100%; }
  .records-filters .search-bar { min-width: 100%; }
  .records-filters .input { width: 100% !important; }
}

/* === L0 upgrade modal === */
.upgrade-tier { display: flex; align-items: center; gap: var(--space-sm); padding: var(--space-sm) 0; }
.upgrade-tier-dot { width: 12px; height: 12px; border-radius: 50%; background: var(--color-border); }
.upgrade-tier-dot.unlocked { background: var(--color-success); }
.upgrade-tier-dot.locked { background: var(--color-warning); }