/* ============================================================
   NetAdmin - Dashboard Layout (Sidebar, Header, Content)
   ============================================================ */

/* App Shell */
.app-wrapper {
    display: flex;
    min-height: 100vh;
    background: var(--color-gray-50);
}

/* ---- Sidebar ---- */
.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    z-index: var(--z-sidebar);
    transition: width var(--transition-base), transform var(--transition-base);
    display: flex;
    flex-direction: column;
}

.sidebar-brand {
    padding: var(--spacing-6) var(--spacing-5);
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    min-height: 70px;
}

.sidebar-close-btn {
    display: none;
}

.sidebar-brand-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: white;
    flex-shrink: 0;
}

.sidebar-brand-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--sidebar-text-active);
    white-space: nowrap;
}

.sidebar-nav {
    flex: 1;
    padding: var(--spacing-4) 0;
}

.sidebar-section-label {
    padding: var(--spacing-4) var(--spacing-5) var(--spacing-2);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-gray-500);
    font-weight: 600;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-5);
    color: var(--sidebar-text);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
    cursor: pointer;
    text-decoration: none;
}

.sidebar-link:hover {
    background: var(--sidebar-hover);
    color: var(--sidebar-text-active);
}

.sidebar-link.active {
    background: rgba(99, 102, 241, 0.15);
    color: var(--sidebar-text-active);
    border-left-color: var(--color-primary);
}

.sidebar-link-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.sidebar-link-text {
    white-space: nowrap;
}

.sidebar-footer {
    padding: var(--spacing-4) var(--spacing-5);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.sidebar-user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: var(--font-size-sm);
    flex-shrink: 0;
}

.sidebar-user-info {
    flex: 1;
    min-width: 0;
}

.sidebar-user-name {
    color: var(--sidebar-text-active);
    font-weight: 600;
    font-size: var(--font-size-sm);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-role {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

/* ---- Main Content Area ---- */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: margin-left var(--transition-base);
    background: var(--color-gray-50);
}

/* ---- Top Header ---- */
.top-header {
    background: var(--color-white);
    border-bottom: 1px solid var(--border-color);
    padding: 0 var(--spacing-8);
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    box-shadow: var(--shadow-sm);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-gray-600);
    cursor: pointer;
    font-size: 1.25rem;
    padding: var(--spacing-2);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.sidebar-toggle:hover {
    background: var(--color-gray-100);
}

.page-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-gray-900);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

/* ---- Page Content ---- */
.page-content {
    flex: 1;
    padding: var(--spacing-8);
}

/* Auth Layout (Login page) */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--sidebar-bg) 0%, #0f3460 50%, var(--color-primary-dark) 100%);
    padding: var(--spacing-4);
}

.auth-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 420px;
    padding: var(--spacing-10);
    animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.auth-logo {
    text-align: center;
    margin-bottom: var(--spacing-8);
}

.auth-logo-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-radius: var(--radius-lg);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    margin-bottom: var(--spacing-3);
}

.auth-logo h2 {
    color: var(--color-gray-900);
    font-size: var(--font-size-2xl);
}

.auth-logo p {
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
    margin-bottom: 0;
}