/* ============================================================
 * layout.css
 * 框架级布局：顶部 Header、左侧 Sidebar、底部移动端 Tabbar
 * ============================================================ */

/* ---------- Header ---------- */
.header {
    grid-area: header;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    background: var(--panel-bg);
    border-bottom: var(--border);
    gap: 12px;
    min-width: 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 600;
    flex-shrink: 0;
}

.logo-icon {
    width: 28px;
    height: 28px;
    background: var(--primary);
    color: var(--primary-foreground);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.server-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 32px;
    padding: 0 12px 0 10px;
    border-radius: 999px;
    background: color-mix(in srgb, var(--primary) 14%, transparent);
    color: var(--accent);
    border: 0.5px solid color-mix(in srgb, var(--primary) 30%, transparent);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
    flex-shrink: 0;
}

.server-pill:hover {
    background: color-mix(in srgb, var(--primary) 22%, transparent);
    transform: translateY(-1px);
}

.server-pill [data-lucide] { font-size: 14px; }
.server-pill-name { max-width: 140px; overflow: hidden; text-overflow: ellipsis; }
.server-pill-caret { font-size: 12px; opacity: 0.7; }

.header-spacer { flex: 1; min-width: 8px; }

.server-info {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 12px;
    white-space: nowrap;
    flex-shrink: 0;
}

.refresh-btn {
    height: 32px;
    padding: 0 12px;
    border: var(--border);
    border-radius: var(--radius-sm);
    background: var(--intensity-6);
    color: var(--text-primary);
    font-size: 12px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
}

.refresh-btn:hover { background: var(--intensity-8); }

.refresh-btn svg { transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1); }
.refresh-btn.spinning svg { animation: refresh-spin 0.8s cubic-bezier(0.4, 0, 0.2, 1); }
@keyframes refresh-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--success);
    flex-shrink: 0;
}

.user-area {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.icon-btn {
    width: 32px;
    height: 32px;
    border: 0;
    background: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

.icon-btn:hover { background: var(--intensity-6); color: var(--text-primary); }

.mobile-menu-btn { display: none; }

/* ---------- Sidebar ---------- */
.sidebar {
    grid-area: sidebar;
    background: var(--panel-bg);
    border-right: var(--border);
    padding: 16px 12px;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 2px;
    cursor: pointer;
    transition: all 0.15s;
    user-select: none;
}

.nav-item:hover { background: var(--intensity-6); color: var(--text-primary); }

.nav-item.active {
    background: color-mix(in srgb, var(--primary) 15%, transparent);
    color: var(--accent);
}

.nav-section {
    margin-top: 16px;
    margin-bottom: 8px;
    padding: 0 12px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nav-group {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 2px;
    cursor: pointer;
    transition: all 0.15s;
    user-select: none;
    position: relative;
}

.nav-group:hover { background: var(--intensity-6); color: var(--text-primary); }

.nav-group.active {
    background: color-mix(in srgb, var(--primary) 15%, transparent);
    color: var(--accent);
}

.nav-group .nav-icon {
    width: 18px;
    display: inline-flex;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}

.nav-group .nav-label {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.nav-group .nav-count {
    font-size: 10px;
    color: var(--text-tertiary);
    background: var(--intensity-6);
    padding: 1px 6px;
    border-radius: 999px;
    line-height: 1.4;
    flex-shrink: 0;
}

.nav-group .nav-toggle {
    width: 18px;
    height: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    cursor: pointer;
    flex-shrink: 0;
    border-radius: 4px;
    transition: transform 0.2s, color 0.15s;
}
.nav-group .nav-toggle:hover { color: var(--accent); background: var(--intensity-6); }
.nav-group .nav-toggle svg { width: 12px; height: 12px; transition: transform 0.2s; }
.nav-group.expanded .nav-toggle svg { transform: rotate(90deg); }

.nav-group.active .nav-count {
    background: color-mix(in srgb, var(--accent) 18%, transparent);
    color: var(--accent);
}

.nav-children {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
    padding-left: 20px;
}

.nav-group.expanded + .nav-children { max-height: 600px; }

.nav-child {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px 6px 22px;
    border-radius: var(--radius-sm);
    color: var(--text-tertiary);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.15s;
    user-select: none;
    position: relative;
}

.nav-child::before {
    content: "";
    position: absolute;
    left: 8px;
    top: 50%;
    width: 6px;
    height: 1px;
    background: var(--intensity-12);
}

.nav-child:hover { background: var(--intensity-4); color: var(--text-primary); }
.nav-child.active { color: var(--accent); font-weight: 500; }
.nav-child .nav-icon { font-size: 12px; }

.nav-child .nav-count {
    margin-left: auto;
    font-size: 10px;
    color: var(--text-tertiary);
    background: var(--intensity-4);
    padding: 1px 5px;
    border-radius: 999px;
    line-height: 1.4;
}

.nav-child.active .nav-count { color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); }

/* ---------- Main ---------- */
.main {
    grid-area: main;
    overflow-y: auto;
    background: var(--background);
    padding: 20px;
    -webkit-overflow-scrolling: touch;
}

.main-content {
    display: grid;
    gap: 16px;
    max-width: 1200px;
    margin: 0 auto;
}

/* ---------- Mobile Tabbar ---------- */
.mobile-tabbar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--panel-bg);
    border-top: var(--border);
    padding: 6px 0 calc(6px + env(safe-area-inset-bottom));
    z-index: 100;
    justify-content: space-around;
}

.tabbar-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 6px 4px;
    color: var(--text-secondary);
    font-size: 10px;
    cursor: pointer;
    background: none;
    border: 0;
    min-height: 44px;
}

.tabbar-item.active { color: var(--accent); }
.tabbar-icon { font-size: 18px; line-height: 1; }

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 90;
    opacity: 0;
    transition: opacity 0.2s;
}

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