/**
 * Sidebar Layout - 玻璃态设计风格
 * 侧边栏导航样式
 * 更新: 2026-01-16 - 应用玻璃态设计规范
 */

/* ===== 侧边栏 - 玻璃态 ===== */
#sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-right: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.5rem;
  /* 响应式过渡动画 */
  transition: 
    width var(--duration-normal, 200ms) var(--ease-smooth),
    height var(--duration-normal, 200ms) var(--ease-smooth),
    min-width var(--duration-normal, 200ms) var(--ease-smooth),
    min-height var(--duration-normal, 200ms) var(--ease-smooth),
    border var(--duration-normal, 200ms) var(--ease-smooth),
    padding var(--duration-normal, 200ms) var(--ease-smooth);
}

.nav-section {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  /* 响应式过渡 */
  transition: flex-direction var(--duration-normal, 200ms) var(--ease-smooth);
}

.nav-spacer {
  flex: 1;
}

/* ===== 导航按钮 ===== */
.nav-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  padding: 0.625rem 0.375rem;
  border: none;
  border-radius: var(--radius);
  background: transparent;
  color: var(--muted-foreground);
  font-size: 0.625rem;
  cursor: pointer;
  /* 响应式过渡 - 包括布局变化 */
  transition: 
    background var(--duration-fast, 150ms) var(--ease-smooth),
    color var(--duration-fast, 150ms) var(--ease-smooth),
    padding var(--duration-normal, 200ms) var(--ease-smooth),
    gap var(--duration-normal, 200ms) var(--ease-smooth);
  outline: none;
  position: relative;
}

.nav-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  color: white;
}

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

.nav-btn.active {
  background: rgba(255, 255, 255, 0.1);
  color: white;
}

.nav-btn.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 1.5rem;
  background: var(--primary);
  border-radius: 0 2px 2px 0;
  animation: slideIndicatorIn var(--transition-normal, 200ms) ease-out;
}

@keyframes slideIndicatorIn {
  from {
    transform: translateY(-50%) scaleY(0);
    opacity: 0;
  }
  to {
    transform: translateY(-50%) scaleY(1);
    opacity: 1;
  }
}

.nav-btn.active .nav-icon {
  color: var(--primary);
}

/* ===== 导航图标 ===== */
.nav-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  transition: all var(--transition-fast, 150ms);
}

.nav-icon svg {
  width: 1.25rem;
  height: 1.25rem;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}

.nav-label {
  font-weight: 500;
  white-space: nowrap;
  letter-spacing: 0.01em;
  /* 响应式过渡 */
  transition: opacity var(--duration-fast, 150ms) var(--ease-smooth);
}

/* ===== 浅色主题样式 - 颜色反转 ===== */

/* 侧边栏 - 浅色主题 */
body:not(.dark) #sidebar {
  background: rgba(255, 255, 255, 0.5);
  border-right: 1px solid rgba(0, 0, 0, 0.1);
}

/* 导航按钮悬停 - 浅色主题 */
body:not(.dark) .nav-btn:hover {
  background: rgba(0, 0, 0, 0.05);
  color: black;
}

/* 导航按钮激活 - 浅色主题 */
body:not(.dark) .nav-btn.active {
  background: rgba(0, 0, 0, 0.1);
  color: black;
}