/*
 * PenTest Platform - Superadmin Layout
 * Sidebar navigation and page structure
 */

/* ========================================
 * LAYOUT CONTAINER
 * ======================================== */

.app-container {
    display: flex;
    min-height: 100vh;
    background: var(--color-bg-dark);
}

/* ========================================
 * SIDEBAR
 * ======================================== */

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    z-index: var(--z-fixed);
    transition: transform var(--transition-normal);
}

.sidebar-header {
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--color-border);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    text-decoration: none;
}

.sidebar-logo-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xl);
    color: var(--color-text-primary);
    box-shadow: var(--shadow-glow-primary);
}

.sidebar-logo-text {
    display: flex;
    flex-direction: column;
}

.sidebar-logo-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    line-height: 1;
}

.sidebar-logo-subtitle {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: var(--spacing-1);
}

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

.sidebar-nav-section {
    margin-bottom: var(--spacing-6);
}

.sidebar-nav-section:last-child {
    margin-bottom: 0;
}

.sidebar-nav-title {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--spacing-2) var(--spacing-4);
    margin-bottom: var(--spacing-2);
}

.sidebar-nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    margin-bottom: var(--spacing-1);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    background: transparent;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    width: 100%;
    text-align: left;
    position: relative;
}

.sidebar-nav-item:hover:not(.active) {
    color: var(--color-text-primary);
    background: var(--color-bg-elevated);
}

.sidebar-nav-item.active {
    color: var(--color-text-primary);
    background: var(--color-bg-elevated);
    box-shadow: var(--shadow-md);
}

.sidebar-nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 25%;
    bottom: 25%;
    width: 3px;
    background: var(--gradient-primary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.sidebar-nav-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.sidebar-nav-text {
    flex: 1;
}

.sidebar-nav-badge {
    margin-left: auto;
}

.sidebar-footer {
    padding: var(--spacing-4);
    border-top: 1px solid var(--color-border);
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3);
    background: var(--color-bg-elevated);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.sidebar-user:hover {
    background: var(--color-bg-hover);
}

.sidebar-user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    flex-shrink: 0;
}

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

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

.sidebar-user-role {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ========================================
 * MAIN CONTENT
 * ======================================== */

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.page-header {
    padding: var(--page-padding);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

.page-header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-4);
}

.page-title-group {
    flex: 1;
}

.page-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-2);
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.page-title-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xl);
    color: var(--color-text-primary);
    box-shadow: var(--shadow-glow-primary);
}

.page-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

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

.page-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3);
    align-items: center;
}

.page-content {
    flex: 1;
    padding: var(--page-padding);
    max-width: var(--content-max-width);
    width: 100%;
    margin: 0 auto;
}

/* ========================================
 * GRID SYSTEMS
 * ======================================== */

.grid {
    display: grid;
    gap: var(--spacing-6);
}

.grid-cols-1 {
    grid-template-columns: repeat(1, 1fr);
}

.grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid-auto-fit {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-gap-sm {
    gap: var(--spacing-3);
}

.grid-gap-md {
    gap: var(--spacing-6);
}

.grid-gap-lg {
    gap: var(--spacing-8);
}

/* ========================================
 * FLEX UTILITIES
 * ======================================== */

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.flex-wrap {
    flex-wrap: wrap;
}

.items-center {
    align-items: center;
}

.items-start {
    align-items: flex-start;
}

.items-end {
    align-items: flex-end;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.justify-end {
    justify-content: flex-end;
}

.gap-2 { gap: var(--spacing-2); }
.gap-3 { gap: var(--spacing-3); }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }
.gap-8 { gap: var(--spacing-8); }

/* ========================================
 * SPACING UTILITIES
 * ======================================== */

.mb-2 { margin-bottom: var(--spacing-2); }
.mb-3 { margin-bottom: var(--spacing-3); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }

.mt-2 { margin-top: var(--spacing-2); }
.mt-3 { margin-top: var(--spacing-3); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }

.p-4 { padding: var(--spacing-4); }
.p-6 { padding: var(--spacing-6); }
.p-8 { padding: var(--spacing-8); }

/* ========================================
 * STATS ROW
 * ======================================== */

.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-8);
}

/* ========================================
 * SECTION
 * ======================================== */

.section {
    margin-bottom: var(--spacing-8);
}

.section:last-child {
    margin-bottom: 0;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-6);
}

.section-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.section-actions {
    display: flex;
    gap: var(--spacing-3);
}

/* ========================================
 * EMPTY STATE
 * ======================================== */

.empty-state {
    text-align: center;
    padding: var(--spacing-12) var(--spacing-6);
    color: var(--color-text-tertiary);
}

.empty-state-icon {
    font-size: var(--font-size-5xl);
    margin-bottom: var(--spacing-6);
    opacity: 0.3;
}

.empty-state-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2);
}

.empty-state-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-bottom: var(--spacing-6);
}

/* ========================================
 * RESPONSIVE DESIGN
 * ======================================== */

/* Extra large screens (1600px and above) */
@media (min-width: 1600px) {
    .stats-row {
        grid-template-columns: repeat(4, 1fr);
    }

    .grid-cols-4 {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Laptop screens (1440px and below) */
@media (max-width: 1440px) {
    .sidebar {
        width: var(--sidebar-width);
    }

    .main-content {
        margin-left: var(--sidebar-width);
    }

    .page-content {
        padding: var(--spacing-5);
    }

    .page-header {
        padding: var(--spacing-4) var(--spacing-5);
    }

    .stats-row {
        grid-template-columns: repeat(3, 1fr);
    }

    .stat-card {
        padding: var(--spacing-4);
    }

    .stat-value {
        font-size: var(--font-size-2xl);
    }

    .grid-cols-4 {
        grid-template-columns: repeat(3, 1fr);
    }

    .page-title {
        font-size: var(--font-size-2xl);
    }
}

/* Medium laptop screens (1200px and below) */
@media (max-width: 1200px) {
    .sidebar {
        width: 220px;
    }

    .main-content {
        margin-left: 220px;
    }

    .page-content {
        padding: var(--spacing-4);
    }

    .stats-row {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-4);
    }

    .grid-cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-cols-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Tablet screens */
@media (max-width: 1024px) {
    .sidebar {
        width: 200px;
    }

    .main-content {
        margin-left: 200px;
    }

    .page-header-top {
        -webkit-flex-direction: column;
        -ms-flex-direction: column;
        flex-direction: column;
        -webkit-box-align: start;
        -ms-flex-align: start;
        align-items: flex-start;
        gap: var(--spacing-3);
    }

    .stats-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-cols-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile tablets and large phones */
@media (max-width: 768px) {
    :root {
        --page-padding: var(--spacing-4);
    }

    .sidebar {
        width: 280px;
        -webkit-transform: translateX(-100%);
        transform: translateX(-100%);
    }

    .sidebar.active {
        -webkit-transform: translateX(0);
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .page-header-top {
        -webkit-flex-direction: column;
        -ms-flex-direction: column;
        flex-direction: column;
        -webkit-box-align: start;
        -ms-flex-align: start;
        align-items: flex-start;
        gap: var(--spacing-4);
    }

    .page-actions {
        width: 100%;
        -webkit-flex-wrap: wrap;
        -ms-flex-wrap: wrap;
        flex-wrap: wrap;
    }

    .page-filters {
        width: 100%;
    }

    .stats-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-3);
    }

    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }

    .section-header {
        -webkit-flex-direction: column;
        -ms-flex-direction: column;
        flex-direction: column;
        -webkit-box-align: start;
        -ms-flex-align: start;
        align-items: flex-start;
        gap: var(--spacing-4);
    }

    .section-actions {
        width: 100%;
    }

    .modal {
        width: 95%;
        max-height: 90vh;
    }

    .toast-container {
        left: var(--spacing-4);
        right: var(--spacing-4);
        top: var(--spacing-4);
    }

    .toast {
        min-width: 0;
        max-width: none;
    }

    .page-title {
        font-size: var(--font-size-xl);
    }

    .page-title-icon {
        width: 36px;
        height: 36px;
        font-size: var(--font-size-base);
    }
}

/* Small phones */
@media (max-width: 480px) {
    :root {
        --page-padding: var(--spacing-3);
    }

    .sidebar {
        width: 100%;
    }

    .page-header {
        padding: var(--spacing-3);
        padding-left: calc(var(--spacing-3) + 52px);
    }

    .page-content {
        padding: var(--spacing-3);
    }

    .page-title {
        font-size: var(--font-size-lg);
    }

    .stat-card {
        padding: var(--spacing-3);
    }

    .stat-value {
        font-size: var(--font-size-xl);
    }

    .btn {
        padding: var(--spacing-2) var(--spacing-4);
        font-size: var(--font-size-xs);
    }

    .card {
        padding: var(--spacing-4);
    }
}

/* ========================================
 * MOBILE MENU TOGGLE
 * ======================================== */

.mobile-menu-toggle {
    display: none;
    position: fixed;
    top: var(--spacing-4);
    left: var(--spacing-4);
    z-index: calc(var(--z-fixed) + 2);
    width: 44px;
    height: 44px;
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    -webkit-transition: all var(--transition-fast);
    transition: all var(--transition-fast);
}

.mobile-menu-toggle:hover {
    box-shadow: var(--shadow-xl), var(--shadow-glow-primary);
}

.mobile-menu-toggle.active {
    background: var(--color-bg-elevated);
}

/* ========================================
 * SIDEBAR OVERLAY
 * ======================================== */

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
    z-index: calc(var(--z-fixed) - 1);
    opacity: 0;
    visibility: hidden;
    -webkit-transition: all var(--transition-normal);
    transition: all var(--transition-normal);
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        -webkit-box-align: center;
        -ms-flex-align: center;
        align-items: center;
        -webkit-box-pack: center;
        -ms-flex-pack: center;
        justify-content: center;
    }

    .sidebar-overlay {
        display: block;
    }

    .page-header {
        padding-left: calc(var(--page-padding) + 52px);
    }
}

/* ========================================
 * BREADCRUMBS
 * ======================================== */

.breadcrumbs {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-bottom: var(--spacing-4);
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.breadcrumb-link {
    color: var(--color-text-tertiary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.breadcrumb-link:hover {
    color: var(--color-text-primary);
}

.breadcrumb-separator {
    color: var(--color-text-muted);
}

.breadcrumb-current {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-medium);
}

/* ========================================
 * DIVIDER
 * ======================================== */

.divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--spacing-6) 0;
}

.divider-vertical {
    width: 1px;
    height: 100%;
    background: var(--color-border);
}