:root {
  --color-primary: #10B981;
  --color-primary-hover: #059669;
  --color-primary-muted: rgba(16, 185, 129, 0.15);
  --color-primary-subtle: rgba(16, 185, 129, 0.08);
  --color-bg-base: #0A0E17;
  --color-bg-elevated: #111827;
  --color-bg-surface: #1A2332;
  --color-bg-surface-hover: #1F2B3D;
  --color-bg-overlay: rgba(0, 0, 0, 0.6);
  --color-text-primary: #F1F5F9;
  --color-text-secondary: #94A3B8;
  --color-text-tertiary: #64748B;
  --color-text-inverse: #0A0E17;
  --color-text-link: #10B981;
  --color-border-default: rgba(148, 163, 184, 0.12);
  --color-border-strong: rgba(148, 163, 184, 0.25);
  --color-border-focus: #10B981;
  --state-success: #10B981;
  --color-success: #10B981;
  --color-success-muted: rgba(16, 185, 129, 0.12);
  --state-warning: #F59E0B;
  --color-warning: #F59E0B;
  --color-warning-muted: rgba(245, 158, 11, 0.12);
  --state-error: #EF4444;
  --state-info: #3B82F6;
  --glow-primary: 0 0 20px rgba(16, 185, 129, 0.15);
  --glow-primary-strong: 0 0 30px rgba(16, 185, 129, 0.25);
  --glow-card: 0 0 20px rgba(16, 185, 129, 0.1), 0 4px 12px rgba(0, 0, 0, 0.2);
  --glow-surface: 0 0 1px rgba(148, 163, 184, 0.15), 0 2px 8px rgba(0, 0, 0, 0.3);
  --font-display: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', 'SF Pro Text', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', monospace;
  --text-xs: 0.75rem;
  --text-sm: 0.8125rem;
  --text-base: 0.875rem;
  --text-lg: 1rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(16, 185, 129, 0.1);
  --sidebar-width: 260px;
  --header-height: 64px;
  --content-max-width: 1400px;
}

html.light {
  --color-bg-base: #F8FAFC;
  --color-bg-elevated: #FFFFFF;
  --color-bg-surface: #F1F5F9;
  --color-bg-surface-hover: #E2E8F0;
  --color-bg-overlay: rgba(0, 0, 0, 0.3);
  --color-text-primary: #0F172A;
  --color-text-secondary: #475569;
  --color-text-tertiary: #94A3B8;
  --color-text-inverse: #FFFFFF;
  --color-text-link: #059669;
  --color-border-default: rgba(15, 23, 42, 0.08);
  --color-border-strong: rgba(15, 23, 42, 0.15);
  --color-border-focus: #059669;
  --color-primary: #059669;
  --color-primary-hover: #047857;
  --color-primary-muted: rgba(5, 150, 105, 0.08);
  --color-primary-subtle: rgba(5, 150, 105, 0.04);
  --glow-primary: 0 0 20px rgba(5, 150, 105, 0.08);
  --glow-primary-strong: 0 0 30px rgba(5, 150, 105, 0.12);
  --glow-surface: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-glow: 0 0 20px rgba(5, 150, 105, 0.06);
}

html.theme-amber {
  --color-primary: #F59E0B;
  --color-primary-hover: #D97706;
  --color-primary-muted: rgba(245, 158, 11, 0.12);
  --color-primary-subtle: rgba(245, 158, 11, 0.06);
  --color-text-link: #F59E0B;
  --color-border-focus: #F59E0B;
  --glow-primary: 0 0 20px rgba(245, 158, 11, 0.15);
  --glow-primary-strong: 0 0 30px rgba(245, 158, 11, 0.25);
  --shadow-glow: 0 0 20px rgba(245, 158, 11, 0.1);
}

html.theme-rose {
  --color-primary: #F43F5E;
  --color-primary-hover: #E11D48;
  --color-primary-muted: rgba(244, 63, 94, 0.12);
  --color-primary-subtle: rgba(244, 63, 94, 0.06);
  --color-text-link: #F43F5E;
  --color-border-focus: #F43F5E;
  --glow-primary: 0 0 20px rgba(244, 63, 94, 0.15);
  --glow-primary-strong: 0 0 30px rgba(244, 63, 94, 0.25);
  --shadow-glow: 0 0 20px rgba(244, 63, 94, 0.1);
}

html.theme-blue {
  --color-primary: #3B82F6;
  --color-primary-hover: #2563EB;
  --color-primary-muted: rgba(59, 130, 246, 0.12);
  --color-primary-subtle: rgba(59, 130, 246, 0.06);
  --color-text-link: #3B82F6;
  --color-border-focus: #3B82F6;
  --glow-primary: 0 0 20px rgba(59, 130, 246, 0.15);
  --glow-primary-strong: 0 0 30px rgba(59, 130, 246, 0.25);
  --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.1);
}

html.theme-purple {
  --color-primary: #A855F7;
  --color-primary-hover: #9333EA;
  --color-primary-muted: rgba(168, 85, 247, 0.12);
  --color-primary-subtle: rgba(168, 85, 247, 0.06);
  --color-text-link: #A855F7;
  --color-border-focus: #A855F7;
  --glow-primary: 0 0 20px rgba(168, 85, 247, 0.15);
  --glow-primary-strong: 0 0 30px rgba(168, 85, 247, 0.25);
  --shadow-glow: 0 0 20px rgba(168, 85, 247, 0.1);
}

.font-display { font-family: var(--font-display); }
.font-body { font-family: var(--font-body); }
.font-mono { font-family: var(--font-mono); }

.no-scrollbar::-webkit-scrollbar { display: none; }
.no-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }

/* 美化滚动条 - 全局应用 */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--color-border-default);
  border-radius: 3px;
  transition: background 0.2s ease;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-border-strong);
}

/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--color-border-default) transparent;
}

/* 链接颜色适配主题 */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

/* 导航项不要下划线和颜色变化 */
.nav-item:hover,
a.nav-item:hover {
  text-decoration: none;
}

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

[data-icon] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  -webkit-mask-size: contain;
  mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
  background-color: currentColor;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  background: var(--color-bg-base);
  color: var(--color-text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

*, *::before, *::after {
  box-sizing: border-box;
}

button {
  cursor: pointer;
}

.nav-item {
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: background-color 150ms cubic-bezier(.2,.8,.2,1), color 150ms cubic-bezier(.2,.8,.2,1);
  text-decoration: none;
}

.nav-item:hover {
  background-color: rgba(16, 185, 129, 0.15);
}

.nav-item:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}

.nav-item[data-active="true"] {
  background-color: var(--color-primary-muted);
  color: var(--color-primary);
}

.nav-item[data-active="true"] svg {
  stroke: var(--color-primary);
}

.header-icon-btn {
  color: var(--color-text-tertiary);
  transition: background-color 150ms cubic-bezier(.2,.8,.2,1);
}

.header-icon-btn:hover {
  background-color: var(--color-bg-surface-hover);
}

.header-icon-btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}

#user-info-area {
  padding: 4px 16px;
  margin: -4px -16px;
  border-radius: 8px;
  transition: background-color 150ms cubic-bezier(.2,.8,.2,1);
}

#user-info-area:hover {
  background-color: rgba(16, 185, 129, 0.15);
}

/* Avatar image styles - prevent image from stretching container */
#user-avatar img,
#pc-avatar-container img,
div.rounded-full.overflow-hidden img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  flex-shrink: 0;
  min-width: 0;
  min-height: 0;
}

#modal-overlay button[onclick="closeModal()"] {
  background: transparent;
  border: none;
  cursor: pointer;
  transition: background-color 150ms cubic-bezier(.2,.8,.2,1);
}

#modal-overlay button[onclick="closeModal()"]:hover {
  background-color: var(--color-bg-elevated);
}

.group-action-btn {
  background-color: var(--color-bg-elevated);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border-default);
  cursor: pointer;
  transition: all 150ms cubic-bezier(.2,.8,.2,1);
}

.group-action-btn:hover {
  background-color: var(--color-primary-muted);
  color: var(--color-primary);
  border-color: var(--color-primary-muted);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background-color 150ms cubic-bezier(.2,.8,.2,1), transform 120ms cubic-bezier(.2,.8,.2,1), box-shadow 150ms cubic-bezier(.2,.8,.2,1);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--glow-primary);
}

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

.btn-primary:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

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

.btn-ghost {
  background-color: transparent;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border-default);
  font-weight: 500;
  cursor: pointer;
  transition: background-color 150ms cubic-bezier(.2,.8,.2,1), border-color 150ms cubic-bezier(.2,.8,.2,1), color 150ms cubic-bezier(.2,.8,.2,1);
}

.btn-ghost:hover {
  background-color: var(--color-bg-surface-hover);
  border-color: var(--color-border-strong);
  color: var(--color-text-primary);
}

.btn-ghost:active {
  background-color: var(--color-bg-surface);
}

.btn-ghost:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.search-input {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border-default);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  transition: border-color 150ms cubic-bezier(.2,.8,.2,1), box-shadow 150ms cubic-bezier(.2,.8,.2,1);
}

.search-input::placeholder {
  color: var(--color-text-tertiary);
}

.search-input:hover {
  border-color: var(--color-border-strong);
}

.search-input:focus {
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px var(--color-primary-muted);
  outline: none;
}

.badge-open {
  background-color: rgba(16, 185, 129, 0.12);
  color: var(--state-success);
}

.badge-private {
  background-color: rgba(245, 158, 11, 0.12);
  color: var(--state-warning);
}

.sidebar {
  background-color: var(--color-bg-surface);
  border-right: 1px solid var(--color-border-default);
  transition: transform 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* 导航栏收起状态 */
.sidebar.sidebar-collapsed {
  transform: translateX(-100%);
}

/* 主内容区在导航栏收起时的适配 */
.main-content {
  transition: margin-left 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.main-content.sidebar-collapsed {
  margin-left: 0 !important;
}

/* 确保 ml-64 在收起时被覆盖 */
.sidebar-collapsed.ml-64 {
  margin-left: 0 !important;
}

/* 侧边栏切换按钮 */
.sidebar-toggle-btn {
  position: fixed;
  top: 16px;
  left: 244px;
  z-index: 60;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border-default);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: left 0.25s cubic-bezier(0.2, 0.8, 0.2, 1), background-color 0.15s ease, color 0.15s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.sidebar-toggle-btn:hover {
  background-color: var(--color-primary-muted);
  color: var(--color-primary);
}

.sidebar-toggle-btn.sidebar-collapsed {
  left: 16px;
}

/* 导航栏遮罩层（移动端） */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background-color: var(--color-bg-overlay);
  z-index: 45;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.sidebar-overlay.active {
  display: block;
  opacity: 1;
}

.modal-overlay {
  background-color: var(--color-bg-overlay);
  backdrop-filter: blur(4px);
}

@media (prefers-reduced-motion: reduce) {
  .nav-item, .header-icon-btn, .btn-primary, .btn-ghost, .search-input {
    transition-duration: 0.01ms !important;
  }
}