/* ===============
   Hao AI - 侧边栏样式
   ================ */

.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 80px;
    height: 100vh;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-lg) 0;
    z-index: 1000;
    transition: var(--duration-base) var(--easing-standard);
}

/* Logo */
.sidebar-logo {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-xl);
    text-align: center;
    padding: 0 var(--space-sm);
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* 导航菜单容器 */
.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    flex: 1;
}

.sidebar-nav.bottom {
    margin-top: auto;
    margin-bottom: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
}

/* 主题切换 */
.theme-switcher {
    position: relative;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: auto;
    margin-bottom: 8px;
}
.theme-toggle-btn {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: transparent;
    color: var(--color-text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration-fast) var(--easing-standard);
}
.theme-toggle-btn:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: var(--hover-bg);
}
.theme-menu {
    position: absolute;
    left: 48px;
    bottom: 0;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    padding: 6px;
    min-width: 130px;
    z-index: 2000;
    box-shadow: var(--shadow-md);
}
.theme-option {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 8px 12px;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--color-text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: all var(--duration-fast) var(--easing-standard);
    white-space: nowrap;
}
.theme-option:hover {
    background: var(--hover-bg);
    color: var(--color-text-primary);
}
.theme-option.active {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
}
.theme-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 2px solid;
    flex-shrink: 0;
    display: inline-block;
}

/* 导航项目 */
.nav-item {
    width: 50px;
    height: 50px;
    display: flex;
  align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--duration-base) var(--easing-standard);
    color: var(--color-text-secondary);
    text-decoration: none;
    position: relative;
}

.nav-item svg {
    width: 24px;
    height: 24px;
    stroke-width: 2;
}

/* 导航项目悬停状态 */
.nav-item:hover {
    color: var(--color-primary);
    border-color: rgba(var(--color-primary-rgb), 0.3);
    background-color: rgba(var(--color-primary-rgb), 0.08);
    transform: translateY(-2px);
}

/* 导航项目活跃状态 */
.nav-item.active {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background-color: rgba(var(--color-primary-rgb), 0.15);
    box-shadow: 0 0 12px rgba(var(--color-primary-rgb), 0.2);
}

/* 导航项目提示文本 */
.nav-item[title] {
    position: relative;
}

.nav-item[title]:hover::after {
    content: attr(title);
    position: absolute;
    left: 65px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--color-primary);
    color: #ffffff;
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-sm);
    white-space: nowrap;
    font-size: 12px;
    z-index: 1001;
    pointer-events: none;
}

/* 响应式 - 平板 */
@media (max-width: 1024px) {
    .sidebar {
        width: 70px;
    }

    .sidebar-logo {
        font-size: 12px;
        margin-bottom: var(--space-lg);
    }

    .nav-item {
        width: 45px;
        height: 45px;
    }

    .nav-item svg {
     width: 20px;
        height: 20px;
    }
}

/* 响应式 - 手机 */
@media (max-width: 768px) {
    .sidebar {
        width: 60px;
    padding: var(--space-md) 0;
    }

    .sidebar-logo {
        font-size: 10px;
        margin-bottom: var(--space-md);
    }

    .sidebar-nav {
        gap: var(--space-sm);
    }

    .nav-item {
        width: 40px;
        height: 40px;
    }

    .nav-item svg {
        width: 18px;
        height: 18px;
    }
}

/* 响应式 - 超小屏 */
@media (max-width: 480px) {
    .sidebar {
        width: 50px;
     padding: var(--space-sm) 0;
    }

    .sidebar-logo {
        font-size: 9px;
        margin-bottom: var(--space-sm);
    }

    .nav-item {
        width: 36px;
     height: 36px;
    }

    .nav-item svg {
      width: 16px;
        height: 16px;
    }
}

/* 竖屏方向 - 手机 */
@media (max-width: 768px) and (orientation: portrait) {
    /* 侧边栏可能需要改为顶部导航 */
}