/* ==========================================================================
   Generator Manager - Industrial Utility Design System
   Organized & Clean Version
   ========================================================================== */

/* =============================================================================
   1. CSS Variables / Design Tokens
   ============================================================================= */

:root {
    /* Colors - Background */
    --color-bg-dark: #0a0f14;
    --color-bg-main: #0f1419;
    --color-bg-card: #161d26;
    --color-bg-elevated: #1c2630;
    --color-bg-hover: #232d3a;

    /* Colors - Border */
    --color-border: #2a3744;
    --color-border-light: #3a4a5c;

    /* Colors - Text */
    --color-text-primary: #e8edf3;
    --color-text-secondary: #8b9bb0;
    --color-text-muted: #5a6b7d;

    /* Colors - Accent */
    --color-accent: #5ac5a9;
    --color-accent-hover: #fbbf24;
    --color-accent-glow: rgba(245, 158, 11, 0.2);

    /* Colors - Status */
    --color-success: #10b981;
    --color-success-bg: rgba(16, 185, 129, 0.1);
    --color-warning: #f59e0b;
    --color-warning-bg: rgba(245, 158, 11, 0.1);
    --color-danger: #ef4444;
    --color-danger-bg: rgba(239, 68, 68, 0.1);
    --color-info: #3b82f6;
    --color-info-bg: rgba(59, 130, 246, 0.1);

    /* Typography */
    --font-display: 'JetBrains Mono', monospace;
    --font-body: 'Plus Jakarta Sans', sans-serif;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Layout */
    --sidebar-width: 260px;
    --top-bar-height: 64px;

    /* Border Radius */
    --border-radius: 8px;
    --border-radius-lg: 12px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

/* =============================================================================
   2. Base / Reset
   ============================================================================= */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg-main);
    color: var(--color-text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent-hover);
}

/* =============================================================================
   3. Layout - App Container
   ============================================================================= */

.app-container {
    display: flex;
    min-height: 100vh;
}

/* =============================================================================
   4. Sidebar
   ============================================================================= */

.sidebar {
    width: var(--sidebar-width);
    background: var(--color-bg-dark);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: transform var(--transition-normal);
}

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

.logo {
    min-width: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--spacing-sm);
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.logo img {
    height: 140px;
    width: auto;
    max-width: 100%;
    object-fit: contain;
    display: block;
    flex: 0 0 auto;
}

.logo span {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.logo i {
    color: var(--color-accent);
    font-size: 1.5rem;
    filter: drop-shadow(0 0 8px var(--color-accent-glow));
}

.sidebar-nav {
    flex: 1;
    padding: var(--spacing-md) 0;
    overflow-y: auto;
}

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

.nav-section-title {
    display: block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--color-text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.nav-link:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.nav-link.active {
    background: var(--color-bg-elevated);
    color: var(--color-accent);
    border-left-color: var(--color-accent);
}

.nav-link i {
    width: 20px;
    text-align: center;
    font-size: 1rem;
}

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

/* =============================================================================
   5. Main Content Area
   ============================================================================= */

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

.top-bar {
    height: var(--top-bar-height);
    background: var(--color-bg-card);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-xl);
    position: sticky;
    top: 0;
    z-index: 50;
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text-secondary);
    font-size: 1.25rem;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.page-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.current-date {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-family: var(--font-display);
    font-size: 0.85rem;
}

.content {
    flex: 1;
    padding: var(--spacing-xl);
}

/* =============================================================================
   6. Authentication - Sidebar User Info & Logout
   ============================================================================= */

/* Sidebar User Info */
.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-bg-main);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
}

.user-avatar {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent);
    border-radius: 50%;
    color: var(--color-bg-dark);
    font-size: 1rem;
}

.user-details {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 0;
}

.user-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* Sidebar Footer Links */
.sidebar-footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

/* Sidebar logout form */
.logout-form {
    margin: 0;
    padding: 0;
}

.logout-form .logout-link {
    width: 100%;
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: inherit;
    text-align: left;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--color-danger);
    border-radius: 0;
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.logout-form .logout-link:hover {
    background: var(--color-danger-bg);
    border-left-color: var(--color-danger);
}

.logout-form .logout-link i {
    width: 20px;
    text-align: center;
}

/* =============================================================================
   7. Cards
   ============================================================================= */

.card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    animation: fadeIn 0.3s ease;
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.card-title i {
    color: var(--color-accent);
}

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

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-elevated);
}

/* =============================================================================
   8. Stats Cards
   ============================================================================= */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    position: relative;
    overflow: hidden;
    animation: fadeIn 0.3s ease;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--stat-color, var(--color-accent));
}

.stat-card-icon {
    width: 48px;
    height: 48px;
    background: var(--stat-bg, var(--color-accent-glow));
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.stat-card-icon i {
    font-size: 1.25rem;
    color: var(--stat-color, var(--color-accent));
}

.stat-value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.stat-card.success {
    --stat-color: var(--color-success);
    --stat-bg: var(--color-success-bg);
}

.stat-card.warning {
    --stat-color: var(--color-warning);
    --stat-bg: var(--color-warning-bg);
}

.stat-card.danger {
    --stat-color: var(--color-danger);
    --stat-bg: var(--color-danger-bg);
}

.stat-card.info {
    --stat-color: var(--color-info);
    --stat-bg: var(--color-info-bg);
}

/* =============================================================================
   9. Tables
   ============================================================================= */

.table-container {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.table th {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    background: var(--color-bg-elevated);
}

.table tbody tr {
    transition: background var(--transition-fast);
}

.table tbody tr:hover {
    background: var(--color-bg-hover);
}

.table td {
    color: var(--color-text-primary);
}

.table .text-muted {
    color: var(--color-text-secondary);
}

.table .text-mono {
    font-family: var(--font-display);
}

/* =============================================================================
   10. Buttons
   ============================================================================= */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-bg-dark);
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    color: var(--color-bg-dark);
    box-shadow: 0 0 20px var(--color-accent-glow);
}

.btn-secondary {
    background: var(--color-bg-elevated);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-light);
    color: var(--color-text-primary);
}

.btn-success {
    background: var(--color-success);
    color: white;
}

.btn-success:hover {
    opacity: 0.9;
    color: white;
}

.btn-danger {
    background: var(--color-danger);
    color: white;
}

.btn-danger:hover {
    opacity: 0.9;
    color: white;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.8rem;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
}

/* =============================================================================
   11. Forms
   ============================================================================= */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--color-text-primary);
}

.form-label .required {
    color: var(--color-danger);
}

.form-control {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.form-control::placeholder {
    color: var(--color-text-muted);
}

select.form-control {
    cursor: pointer;
}

.form-hint {
    margin-top: var(--spacing-xs);
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.form-check input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-accent);
}

/* =============================================================================
   12. Badges
   ============================================================================= */

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-family: var(--font-display);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 4px;
}

.badge-success {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.badge-warning {
    background: var(--color-warning-bg);
    color: var(--color-warning);
}

.badge-danger {
    background: var(--color-danger-bg);
    color: var(--color-danger);
}

.badge-info {
    background: var(--color-info-bg);
    color: var(--color-info);
}

.badge-muted {
    background: var(--color-bg-elevated);
    color: var(--color-text-muted);
}

/* =============================================================================
   13. Alerts & Messages
   ============================================================================= */

.messages-container {
    padding: 0 var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.alert {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
}

.alert-success {
    background: var(--color-success-bg);
    border: 1px solid var(--color-success);
    color: var(--color-success);
}

.alert-error {
    background: var(--color-danger-bg);
    border: 1px solid var(--color-danger);
    color: var(--color-danger);
}

.alert-warning {
    background: var(--color-warning-bg);
    border: 1px solid var(--color-warning);
    color: var(--color-warning);
}

.alert-info {
    background: var(--color-info-bg);
    border: 1px solid var(--color-info);
    color: var(--color-info);
}

.alert-close {
    margin-left: auto;
    background: none;
    border: none;
    color: inherit;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0.7;
}

.alert-close:hover {
    opacity: 1;
}

/* =============================================================================
   14. Pagination
   ============================================================================= */

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg) 0;
}

.pagination a,
.pagination span {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    font-family: var(--font-display);
    font-size: 0.85rem;
}

.pagination a {
    background: var(--color-bg-elevated);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.pagination a:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.pagination .current {
    background: var(--color-accent);
    color: var(--color-bg-dark);
    font-weight: 600;
}

/* =============================================================================
   15. Filters
   ============================================================================= */

.filters-bar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
}

.search-input {
    flex: 1;
    min-width: 200px;
    position: relative;
}

.search-input i {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
}

.search-input input {
    padding-left: 40px;
}

.filter-select {
    min-width: 150px;
}

/* =============================================================================
   16. Empty State
   ============================================================================= */

.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.5;
}

.empty-state h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
}

/* =============================================================================
   17. Page Header
   ============================================================================= */

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.page-header-actions {
    display: flex;
    gap: var(--spacing-md);
}

/* =============================================================================
   18. Detail Grid & Rows
   ============================================================================= */

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.detail-section-title {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
}

.detail-row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border);
}

.detail-row:last-child {
    border-bottom: none;
}

.detail-label {
    color: var(--color-text-secondary);
}

.detail-value {
    font-weight: 600;
    color: var(--color-text-primary);
    text-align: right;
}

.detail-value.mono {
    font-family: var(--font-display);
}

/* =============================================================================
   19. Quick Actions
   ============================================================================= */

.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-md);
}

.quick-action-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-xl);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    text-align: center;
    transition: all var(--transition-fast);
}

.quick-action-card:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

.quick-action-card i {
    font-size: 2rem;
    color: var(--color-accent);
}

.quick-action-card span {
    font-weight: 600;
    color: var(--color-text-primary);
}

/* =============================================================================
   20. Utility Classes
   ============================================================================= */

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

.text-right {
    text-align: right;
}

.text-success {
    color: var(--color-success);
}

.text-warning {
    color: var(--color-warning);
}

.text-danger {
    color: var(--color-danger);
}

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

.text-mono {
    font-family: var(--font-display);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

.mb-xl {
    margin-bottom: var(--spacing-xl);
}

/* =============================================================================
   21. Responsive Design
   ============================================================================= */

@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

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

    .sidebar-toggle {
        display: block;
    }
}

@media (max-width: 768px) {
    .content {
        padding: var(--spacing-md);
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .filters-bar {
        flex-direction: column;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* =============================================================================
   22. Print Styles
   ============================================================================= */

@media print {
    .sidebar,
    .top-bar,
    .btn,
    .filters-bar,
    .page-header-actions {
        display: none !important;
    }

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

    .content {
        padding: 0;
    }

    .card {
        border: 1px solid #ccc;
        break-inside: avoid;
    }

    body {
        background: white;
        color: black;
    }
}

/* =============================================================================
   23. Animations
   ============================================================================= */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}