/* DICE Master - Dark Theme System */

:root {
    /* Dark Theme Colors */
    --bg-primary: #0F1419;
    --bg-secondary: #1A1F26;
    --bg-tertiary: #252A32;
    --bg-hover: #2A2F37;
    
    /* DICE Brand */
    --dice-primary: #00BFA5;
    --dice-primary-dark: #00897B;
    --dice-primary-light: #64FFDA;
    
    /* Text Colors */
    --text-primary: #E1E8ED;
    --text-secondary: #8899A6;
    --text-muted: #657786;
    
    /* Status Colors */
    --success: #00C851;
    --warning: #FF8800;
    --error: #FF4444;
    --info: #33B5E5;
    
    /* Borders & Shadows */
    --border-color: #2A2F37;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;
    
    /* Sidebar */
    --sidebar-width: 260px;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Login Screen */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0F1419 0%, #1A1F26 100%);
    padding: var(--spacing-md);
}

.login-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.dice-logo {
    margin: 0 auto var(--spacing-lg);
    display: inline-block;
}

.login-card h1 {
    color: var(--dice-primary);
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.login-subtitle {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.login-form {
    text-align: left;
}

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

.form-group label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--dice-primary);
    box-shadow: 0 0 0 3px rgba(0, 191, 165, 0.1);
}

.error-message {
    background: rgba(255, 68, 68, 0.1);
    border: 1px solid var(--error);
    color: var(--error);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
    font-size: 0.875rem;
}

.btn-login {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--dice-primary);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-login:hover {
    background: var(--dice-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.login-footer {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.875rem;
}

.version {
    margin-top: var(--spacing-sm);
    font-size: 0.75rem;
}

/* Main Container */
.main-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
}

.sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.sidebar-header h2 {
    color: var(--dice-primary);
    font-size: 1.25rem;
}

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

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: all 0.3s;
    margin-bottom: var(--spacing-xs);
}

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

.nav-item.active {
    background: rgba(0, 191, 165, 0.1);
    color: var(--dice-primary);
}

.nav-item .icon {
    font-size: 1.25rem;
}

.sidebar-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.user-info {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--dice-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
}

.user-details {
    flex: 1;
}

.user-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

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

.btn-logout {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.btn-logout:hover {
    background: var(--error);
    color: white;
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: var(--spacing-xl);
}

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

.page-header h1 {
    font-size: 2rem;
    color: var(--text-primary);
}

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

.last-update {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.btn-refresh {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.btn-refresh:hover {
    background: var(--bg-hover);
    transform: rotate(180deg);
}

/* Page Content */
.page-content {
    display: none;
}

.page-content.active {
    display: block;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.stat-icon {
    font-size: 2.5rem;
    width: 60px;
    height: 60px;
    background: rgba(0, 191, 165, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dice-primary);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

/* Charts Grid */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.chart-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    height: 350px;
    display: flex;
    flex-direction: column;
}

.chart-card h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    font-size: 1.125rem;
    flex-shrink: 0;
}

.chart-card canvas {
    flex: 1;
    max-height: 280px;
}

/* Activity Section */
.activity-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
}

.activity-section h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    font-size: 1.125rem;
}

.activity-list {
    max-height: 400px;
    overflow-y: auto;
}

.activity-item {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: rgba(0, 191, 165, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
}

.activity-content {
    flex: 1;
}

.activity-user {
    font-weight: 600;
    color: var(--text-primary);
}

.activity-action {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.activity-time {
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-top: var(--spacing-xs);
}

/* Page Actions */
.page-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.search-input {
    flex: 1;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.875rem;
}

.search-input:focus {
    outline: none;
    border-color: var(--dice-primary);
}

.btn-primary,
.btn-secondary {
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.875rem;
}

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

.btn-primary:hover {
    background: var(--dice-primary-dark);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background: var(--bg-hover);
}

/* Filters */
.filters {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.filter-select,
.filter-input {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.875rem;
}

/* Table Container */
.table-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

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

thead {
    background: var(--bg-tertiary);
}

th {
    padding: var(--spacing-md);
    text-align: left;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

td {
    padding: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    color: var(--text-primary);
}

tr:hover td {
    background: var(--bg-hover);
}

.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-master {
    background: rgba(255, 136, 0, 0.2);
    color: var(--warning);
}

.badge-admin {
    background: rgba(0, 191, 165, 0.2);
    color: var(--dice-primary);
}

.badge-viewer {
    background: rgba(51, 181, 229, 0.2);
    color: var(--info);
}

.badge-active {
    background: rgba(0, 200, 81, 0.2);
    color: var(--success);
}

.badge-inactive {
    background: rgba(136, 153, 166, 0.2);
    color: var(--text-muted);
}

.table-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-icon {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.btn-icon:hover {
    background: var(--dice-primary);
    color: white;
}

.btn-icon.delete:hover {
    background: var(--error);
}

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

.system-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
}

.system-card h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    font-size: 1.125rem;
}

.system-status {
    text-align: center;
    padding: var(--spacing-xl);
}

.status-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.status-text {
    font-size: 1.25rem;
    font-weight: 600;
}

.database-info,
.issues-list,
.top-users-list {
    font-size: 0.875rem;
}

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

.db-row:last-child,
.issue-item:last-child,
.user-item:last-child {
    border-bottom: none;
}

.issue-critical {
    color: var(--error);
}

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

.issue-info {
    color: var(--info);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
}

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

.modal-header h2 {
    color: var(--text-primary);
    font-size: 1.5rem;
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.3s;
}

.modal-close:hover {
    background: var(--bg-hover);
}

.modal-content form {
    padding: var(--spacing-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.modal-content .form-group input,
.modal-content .form-group select {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.875rem;
}

.modal-content .form-group input:focus,
.modal-content .form-group select:focus {
    outline: none;
    border-color: var(--dice-primary);
}

.modal-content .form-group small {
    display: block;
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-top: var(--spacing-xs);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    color: var(--text-primary);
}

.checkbox-label input[type="checkbox"] {
    width: auto;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }

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

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .filters {
        flex-direction: column;
    }
}