/* Modern Admin Panel Styles */
:root {
    --primary-color: #667eea;
    --primary-dark: #5a67d8;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --success-color: #4ade80;
    --warning-color: #fbbf24;
    --danger-color: #f87171;
    --info-color: #60a5fa;
    
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    --border-color: #334155;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, var(--bg-primary) 0%, #1a202c 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Admin Container */
.admin-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Styles */
.admin-header {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
}

.header-left {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo i {
    font-size: 2rem;
    color: var(--primary-color);
    text-shadow: 0 0 20px rgba(102, 126, 234, 0.5);
}

.logo h1 {
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    margin-left: 2.5rem;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.user-welcome {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
}

.user-welcome i {
    font-size: 1.25rem;
    color: var(--primary-color);
}

.logout-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--danger-color), #ef4444);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.logout-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, #ef4444, #dc2626);
}

/* Navigation Styles */
.admin-nav {
    background: var(--bg-card);
    padding: 0 1rem;
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.admin-nav::-webkit-scrollbar {
    display: none;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border-bottom: 3px solid transparent;
    white-space: nowrap;
    position: relative;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.nav-item i {
    font-size: 1rem;
    width: 18px;
    text-align: center;
    flex-shrink: 0;
}

.nav-item[title] {
    position: relative;
}

.nav-item[title]:hover::after {
    content: attr(title);
    position: absolute;
    bottom: -35px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-primary);
    color: var(--text-primary);
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.75rem;
    white-space: nowrap;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

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

.nav-item.active {
    background: var(--bg-card-hover);
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 0 2px 2px 0;
}

/* Main Content */
.admin-main {
    flex: 1;
    padding: 2rem;
    background: linear-gradient(135deg, var(--bg-primary) 0%, #0f172a 100%);
}

/* Dashboard Styles */
.dashboard h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: var(--shadow);
}

.stat-content h3 {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.stat-subtitle {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
    font-weight: 400;
}

/* Quick Actions */
.quick-actions {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

.quick-actions h3 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.quick-actions h3 i {
    color: var(--warning-color);
    font-size: 1.125rem;
}

.action-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.875rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--bg-tertiary), #475569);
    color: var(--text-primary);
    box-shadow: var(--shadow);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color), #22c55e);
    color: white;
    box-shadow: var(--shadow);
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color), #f59e0b);
    color: white;
    box-shadow: var(--shadow);
}

.btn-warning:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Page Header Styles */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.page-title {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.page-title i {
    font-size: 1.5rem;
    color: var(--primary-color);
    width: 24px;
    text-align: center;
}

.page-title h2 {
    margin: 0;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Form Styles */
.form-container {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

.form-container h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.875rem 1rem;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    background: var(--bg-secondary);
}

/* Table Styles */
.table-container {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

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

.data-table th {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-weight: 600;
    padding: 1.25rem 1rem;
    text-align: left;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table td {
    padding: 1rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.data-table tr:hover {
    background: var(--bg-card-hover);
}

.data-table tr:last-child td {
    border-bottom: none;
}

/* Button Variants */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color), #ef4444);
    color: white;
}

.btn-danger:hover {
    background: linear-gradient(135deg, #ef4444, #dc2626);
}

/* Status Badges */
.status {
    padding: 0.375rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-pending {
    background: rgba(251, 191, 36, 0.1);
    color: var(--warning-color);
    border: 1px solid rgba(251, 191, 36, 0.2);
}

.status-paid {
    background: rgba(74, 222, 128, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(74, 222, 128, 0.2);
}

.status-overdue {
    background: rgba(248, 113, 113, 0.1);
    color: var(--danger-color);
    border: 1px solid rgba(248, 113, 113, 0.2);
}

.status-present {
    background: rgba(74, 222, 128, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(74, 222, 128, 0.2);
}

.status-absent {
    background: rgba(248, 113, 113, 0.1);
    color: var(--danger-color);
    border: 1px solid rgba(248, 113, 113, 0.2);
}

.status-excused {
    background: rgba(251, 191, 36, 0.1);
    color: var(--warning-color);
    border: 1px solid rgba(251, 191, 36, 0.2);
}

/* Alert Styles */
.alert {
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius-sm);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
}

.alert-success {
    background: rgba(74, 222, 128, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(74, 222, 128, 0.2);
}

.alert-error {
    background: rgba(248, 113, 113, 0.1);
    color: var(--danger-color);
    border: 1px solid rgba(248, 113, 113, 0.2);
}

/* Login Styles */
.login-container {
    max-width: 400px;
    margin: 10vh auto;
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-color);
}

.login-container h1 {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .nav-item {
        padding: 0.75rem 0.75rem;
        font-size: 0.8rem;
    }
    
    .nav-item i {
        font-size: 0.9rem;
        width: 16px;
    }
}

@media (max-width: 768px) {
    .admin-header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .admin-nav {
        flex-direction: column;
        padding: 0;
    }
    
    .nav-item {
        justify-content: center;
        border-bottom: 1px solid var(--border-color);
        padding: 0.75rem 0.5rem;
        font-size: 0.8rem;
    }
    
    .nav-item i {
        font-size: 0.9rem;
        width: 16px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .admin-main {
        padding: 1rem;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Push Notifications Styles */
.header-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.templates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

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

.template-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.template-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-tertiary);
}

.template-info h4 {
    margin: 0 0 0.5rem;
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
}

.template-category {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.category-general { background: rgba(96, 165, 250, 0.1); color: var(--info-color); }
.category-payment { background: rgba(74, 222, 128, 0.1); color: var(--success-color); }
.category-training { background: rgba(251, 191, 36, 0.1); color: var(--warning-color); }
.category-attendance { background: rgba(139, 92, 246, 0.1); color: #8b5cf6; }
.category-urgent { background: rgba(248, 113, 113, 0.1); color: var(--danger-color); }

.template-actions {
    display: flex;
    gap: 0.5rem;
}

.template-content {
    padding: 1.5rem;
}

.template-preview {
    margin-bottom: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.template-preview:last-child {
    margin-bottom: 0;
}

.template-preview strong {
    color: var(--text-primary);
    font-weight: 600;
}

.template-status {
    padding: 1rem 1.5rem;
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
}

.template-status .status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.template-status .status.active {
    color: var(--success-color);
}

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

.template-status .status i {
    font-size: 0.75rem;
}

/* API Settings Styles */
.api-status {
    display: flex;
    align-items: center;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    font-size: 0.875rem;
}

.status-indicator.active {
    background: rgba(74, 222, 128, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(74, 222, 128, 0.2);
}

.status-indicator.inactive {
    background: rgba(248, 113, 113, 0.1);
    color: var(--danger-color);
    border: 1px solid rgba(248, 113, 113, 0.2);
}

.status-indicator i {
    font-size: 0.75rem;
}

.form-help {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    font-style: italic;
}

.api-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.info-card {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
}

.info-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.info-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: var(--shadow);
}

.info-content h4 {
    margin: 0 0 0.5rem;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
}

.info-content p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.4;
}

/* Analytics Section */
.analytics-section {
    margin: 2rem 0;
}

.analytics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.chart-container {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.chart-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-tertiary);
}

.chart-header h3 {
    margin: 0 0 0.5rem;
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.chart-header h3 i {
    color: var(--primary-color);
}

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

.chart-content {
    padding: 1.5rem;
}

/* Trend Chart */
.trend-chart {
    display: flex;
    align-items: end;
    gap: 1rem;
    height: 200px;
    padding: 1rem 0;
}

.trend-bar {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
}

.bar {
    width: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 4px 4px 0 0;
    min-height: 20px;
    transition: all 0.3s ease;
    margin-bottom: 0.5rem;
}

.trend-bar:hover .bar {
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
}

.bar-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 0.25rem;
}

.bar-value {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
}

/* Age Groups */
.age-groups {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.age-group-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.age-group-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.age-group-name {
    font-weight: 500;
    color: var(--text-primary);
}

.age-group-count {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.age-group-bar {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
}

.age-group-progress {
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 4px;
    transition: width 0.3s ease;
}

/* App Status Section */
.app-status-section {
    margin: 2rem 0;
}

.status-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.status-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: all 0.3s ease;
}

.status-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.status-card .status-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: var(--shadow);
    flex-shrink: 0;
}

.status-card .status-content {
    flex: 1;
}

.status-card h4 {
    margin: 0 0 0.5rem;
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
}

.status-card p {
    margin: 0 0 1rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.4;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-badge.active {
    background: rgba(74, 222, 128, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(74, 222, 128, 0.2);
}

.status-badge.inactive {
    background: rgba(248, 113, 113, 0.1);
    color: var(--danger-color);
    border: 1px solid rgba(248, 113, 113, 0.2);
}

/* User Management Styles */
.security-stats {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-item .stat-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: var(--shadow);
}

.stat-item .stat-content h4 {
    margin: 0 0 0.25rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-item .stat-content p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
}

.user-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    box-shadow: var(--shadow);
}

.user-details h4 {
    margin: 0 0 0.5rem;
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
}

.user-details p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
    max-height: 300px;
    overflow-y: auto;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-tertiary);
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-card);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

.checkbox-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.checkbox-item input[type="checkbox"] {
    margin: 0;
    transform: scale(1.2);
}

.checkbox-content {
    flex: 1;
}

.user-name {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.user-detail {
    display: block;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.table-header h3 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.table-header h3 i {
    color: var(--primary-color);
}

.table-actions {
    display: flex;
    gap: 0.5rem;
}

.status-admin_reset { background: rgba(251, 191, 36, 0.1); color: var(--warning-color); }
.status-user_change { background: rgba(96, 165, 250, 0.1); color: var(--info-color); }
.status-security_reset { background: rgba(248, 113, 113, 0.1); color: var(--danger-color); }

/* Data Export Styles */
.export-stats {
    margin-bottom: 2rem;
}

.export-stats .stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.export-stats .stat-card {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
}

.export-stats .stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.export-stats .stat-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: var(--shadow);
}

.export-stats .stat-content h3 {
    margin: 0 0 0.25rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.export-stats .stat-content p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.export-options {
    margin: 2rem 0;
}

.export-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
}

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

.export-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.export-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.export-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: var(--shadow);
    flex-shrink: 0;
}

.export-info h3 {
    margin: 0 0 0.5rem;
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
}

.export-info p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.4;
}

.export-actions {
    padding: 1.5rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.export-form {
    padding: 1.5rem;
}

.export-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.export-form .form-group {
    display: flex;
    flex-direction: column;
}

.export-form .form-group label {
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.export-form .form-group input {
    padding: 0.75rem;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: all 0.3s ease;
}

.export-form .form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.export-history {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    margin-top: 2rem;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.history-header {
    padding: 1.5rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.history-header h3 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.history-header h3 i {
    color: var(--primary-color);
}

.history-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.history-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.history-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    flex-shrink: 0;
}

.history-info h4 {
    margin: 0 0 0.25rem;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
}

.history-info p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.4;
}

/* Cash Register Styles */
.cash-stats {
    margin-bottom: 2rem;
}

.cash-stats .stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.cash-stats .stat-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.cash-stats .stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.cash-stats .stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.cash-stats .stat-card.income::before {
    background: linear-gradient(135deg, var(--success-color), #10b981);
}

.cash-stats .stat-card.expense::before {
    background: linear-gradient(135deg, var(--danger-color), #ef4444);
}

.cash-stats .stat-card.balance::before {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.cash-stats .stat-card.total::before {
    background: linear-gradient(135deg, var(--warning-color), #f59e0b);
}

.cash-stats .stat-card.positive {
    border-color: var(--success-color);
}

.cash-stats .stat-card.negative {
    border-color: var(--danger-color);
}

.cash-stats .stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    box-shadow: var(--shadow);
    flex-shrink: 0;
}

.cash-stats .stat-card.income .stat-icon {
    background: linear-gradient(135deg, var(--success-color), #10b981);
}

.cash-stats .stat-card.expense .stat-icon {
    background: linear-gradient(135deg, var(--danger-color), #ef4444);
}

.cash-stats .stat-card.balance .stat-icon {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.cash-stats .stat-card.total .stat-icon {
    background: linear-gradient(135deg, var(--warning-color), #f59e0b);
}

.cash-stats .stat-content h3 {
    margin: 0 0 0.5rem;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.cash-stats .stat-content p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

.text-success {
    color: var(--success-color) !important;
    font-weight: 600;
}

.text-danger {
    color: var(--danger-color) !important;
    font-weight: 600;
}

.status-income {
    background: rgba(74, 222, 128, 0.1);
    color: var(--success-color);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-expense {
    background: rgba(248, 113, 113, 0.1);
    color: var(--danger-color);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Info Card */
.info-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    margin-bottom: 2rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    box-shadow: var(--shadow);
}

.info-card .info-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius);
    background: linear-gradient(135deg, var(--info-color), #3b82f6);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.125rem;
    flex-shrink: 0;
}

.info-card .info-content h4 {
    margin: 0 0 0.5rem;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
}

.info-card .info-content p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
}

/* Reports Styles */
.report-filters {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.filter-tabs {
    display: flex;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.filter-tab {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    border-bottom: 3px solid transparent;
    font-weight: 500;
}

.filter-tab:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.filter-tab.active {
    background: var(--bg-card);
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.filter-tab i {
    font-size: 1rem;
    width: 16px;
    text-align: center;
}

.filter-controls {
    padding: 1.5rem;
}

.filter-form .form-row {
    display: flex;
    align-items: end;
    gap: 1rem;
    flex-wrap: wrap;
}

.filter-form .form-group {
    display: flex;
    flex-direction: column;
    min-width: 150px;
}

.filter-form .form-group label {
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.filter-form .form-group input {
    padding: 0.75rem;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: all 0.3s ease;
}

.filter-form .form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.report-section {
    margin-bottom: 2rem;
}

.report-summary {
    margin-bottom: 2rem;
}

.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.summary-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.summary-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.summary-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.summary-card.income::before {
    background: linear-gradient(135deg, var(--success-color), #10b981);
}

.summary-card.expense::before {
    background: linear-gradient(135deg, var(--danger-color), #ef4444);
}

.summary-card.balance.positive::before {
    background: linear-gradient(135deg, var(--success-color), #10b981);
}

.summary-card.balance.negative::before {
    background: linear-gradient(135deg, var(--danger-color), #ef4444);
}

.summary-card .card-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    box-shadow: var(--shadow);
    flex-shrink: 0;
}

.summary-card.income .card-icon {
    background: linear-gradient(135deg, var(--success-color), #10b981);
}

.summary-card.expense .card-icon {
    background: linear-gradient(135deg, var(--danger-color), #ef4444);
}

.summary-card.balance .card-icon {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.summary-card .card-content h3 {
    margin: 0 0 0.5rem;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.summary-card .card-content p {
    margin: 0 0 0.25rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

.summary-card .card-content small {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.chart-container {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.chart-container h3 {
    margin: 0;
    padding: 1.5rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.chart-container h3 i {
    color: var(--primary-color);
}

.chart-content {
    padding: 1.5rem;
}

.trend-chart {
    display: flex;
    align-items: end;
    gap: 1rem;
    height: 300px;
    padding: 1rem 0;
}

.trend-bar {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
    position: relative;
}

.trend-bar .bar {
    width: 100%;
    border-radius: 4px 4px 0 0;
    min-height: 20px;
    transition: all 0.3s ease;
    margin-bottom: 0.5rem;
    position: relative;
}

.trend-bar .bar.income {
    background: linear-gradient(135deg, var(--success-color), #10b981);
    margin-bottom: 2px;
}

.trend-bar .bar.expense {
    background: linear-gradient(135deg, var(--danger-color), #ef4444);
}

.trend-bar:hover .bar {
    opacity: 0.8;
}

.bar-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 0.25rem;
}

.bar-values {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    text-align: center;
}

.income-value {
    font-size: 0.75rem;
    color: var(--success-color);
    font-weight: 600;
}

.expense-value {
    font-size: 0.75rem;
    color: var(--danger-color);
    font-weight: 600;
}

.progress-bar {
    position: relative;
    height: 20px;
    background: var(--bg-tertiary);
    border-radius: 10px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 10px;
    transition: width 0.3s ease;
}

.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

/* Backup System Styles */
.backup-stats {
    margin-bottom: 2rem;
}

.backup-stats .stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.backup-stats .stat-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.backup-stats .stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.backup-stats .stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.backup-stats .stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: var(--shadow);
    flex-shrink: 0;
}

.backup-stats .stat-content h3 {
    margin: 0 0 0.5rem;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.backup-stats .stat-content p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

.settings-container {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.settings-container h3 {
    margin: 0 0 1.5rem;
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.settings-container h3 i {
    color: var(--primary-color);
}

.backup-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.backup-info i {
    color: var(--primary-color);
    font-size: 1.125rem;
}

.action-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.action-buttons .btn {
    font-size: 0.75rem;
    padding: 0.375rem 0.75rem;
}

.status-manual {
    background: rgba(96, 165, 250, 0.1);
    color: var(--info-color);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-automatic {
    background: rgba(74, 222, 128, 0.1);
    color: var(--success-color);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.disk-usage {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    padding: 2rem;
    margin-top: 2rem;
    box-shadow: var(--shadow);
}

.disk-usage h3 {
    margin: 0 0 1.5rem;
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.disk-usage h3 i {
    color: var(--primary-color);
}

.usage-bar {
    position: relative;
    height: 30px;
    background: var(--bg-tertiary);
    border-radius: 15px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.usage-fill {
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 15px;
    transition: width 0.3s ease;
    position: relative;
}

.usage-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.875rem;
    font-weight: 600;
    color: white;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
    z-index: 1;
}

/* System Settings Styles */
.system-info {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.system-info h3 {
    margin: 0 0 1.5rem;
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.system-info h3 i {
    color: var(--primary-color);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.info-card {
    background: var(--bg-tertiary);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
}

.info-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.info-card .info-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    flex-shrink: 0;
}

.info-card .info-content h4 {
    margin: 0 0 0.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-card .info-content p {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.settings-tabs {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.tab-nav {
    display: flex;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
}

.tab-btn {
    background: none;
    border: none;
    padding: 1rem 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: all 0.3s ease;
    border-bottom: 3px solid transparent;
    white-space: nowrap;
}

.tab-btn:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.tab-btn.active {
    background: var(--bg-card);
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-btn i {
    font-size: 1rem;
}

.tab-content {
    padding: 0;
}

.tab-pane {
    display: none;
    padding: 2rem;
}

.tab-pane.active {
    display: block;
}

.form-section {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.form-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.form-section h4 {
    margin: 0 0 1.5rem;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-section h4 i {
    color: var(--primary-color);
    font-size: 0.875rem;
}

.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.checkbox-item {
    position: relative;
}

.checkbox-item label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    padding: 0.75rem;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.checkbox-item label:hover {
    background: var(--bg-card);
    border-color: var(--primary-color);
}

.checkbox-item input[type="checkbox"] {
    display: none;
}

.checkbox-item .checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    position: relative;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.checkbox-item input[type="checkbox"]:checked + .checkmark {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.checkbox-item input[type="checkbox"]:checked + .checkmark::after {
    content: '';
    position: absolute;
    left: 6px;
    top: 2px;
    width: 6px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* Email System Styles */
.email-stats {
    margin-bottom: 2rem;
}

.email-stats .stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.email-stats .stat-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.email-stats .stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.email-stats .stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.email-stats .stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: var(--shadow);
    flex-shrink: 0;
}

.email-stats .stat-content h3 {
    margin: 0 0 0.5rem;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.email-stats .stat-content p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

.email-compose {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.email-compose h3 {
    margin: 0 0 1.5rem;
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.email-compose h3 i {
    color: var(--primary-color);
}

.email-history {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.email-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.email-info i {
    color: var(--primary-color);
    font-size: 1.125rem;
}

.status-success {
    background: rgba(74, 222, 128, 0.1);
    color: var(--success-color);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-error {
    background: rgba(248, 113, 113, 0.1);
    color: var(--error-color);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-warning {
    background: rgba(251, 191, 36, 0.1);
    color: var(--warning-color);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-header h3 i {
    color: var(--primary-color);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.modal-body {
    padding: 1.5rem;
}

/* Login Logo Styles */
.login-container {
    position: relative;
    max-width: 400px;
    margin: 0 auto;
    padding: 2rem;
}

.login-container form {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.login-container h1 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
}

.login-container label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 500;
}

.login-container input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: 1rem;
    transition: all 0.3s ease;
}

.login-container input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.login-container button {
    width: 100%;
    padding: 0.75rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.login-container button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.login-container .alert {
    background: var(--error-color);
    color: white;
    padding: 0.75rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    text-align: center;
    font-weight: 500;
}

.login-logo {
    text-align: center;
    margin: 0 auto 2rem auto;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.login-logo::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="2"/><circle cx="50" cy="50" r="25" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></svg>') center/cover;
    opacity: 0.3;
}

.login-logo img {
    max-width: 150px;
    max-height: 150px;
    width: auto;
    height: auto;
    border-radius: 50%;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    transition: all 0.3s ease;
    animation: pulse 2s infinite;
    object-fit: contain;
    display: block;
    margin: 0 auto 1rem auto;
}

.login-logo img:hover {
    transform: scale(1.05);
}

.login-logo-fallback {
    font-size: 3rem;
    color: white;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
    animation: pulse 2s infinite;
    display: block;
    margin: 0 auto 1rem auto;
}

.login-logo-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin: 0 0 0.5rem 0;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
    letter-spacing: 1px;
}

.login-logo-subtitle {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.9);
    margin: 0;
    font-weight: 500;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* Ders Notları Styles */
.lesson-notes-stats {
    margin-bottom: 2rem;
}

.lesson-notes-stats .stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.lesson-notes-stats .stat-card {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
}

.lesson-notes-stats .stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.lesson-notes-stats .stat-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
}

.lesson-notes-stats .stat-content h3 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 0.25rem 0;
}

.lesson-notes-stats .stat-content p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.9rem;
}

.filter-section {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

.filter-form {
    display: flex;
    gap: 1rem;
    align-items: end;
    flex-wrap: wrap;
}

.filter-group {
    flex: 1;
    min-width: 200px;
}

.filter-group input,
.filter-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.9rem;
}

.filter-group input:focus,
.filter-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.lesson-notes-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.lesson-note-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all 0.3s ease;
}

.lesson-note-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.note-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
}

.note-title h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 0.5rem 0;
}

.note-meta {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.note-meta .category {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--border-radius);
    font-size: 0.8rem;
    font-weight: 500;
}

.note-meta .priority {
    padding: 0.25rem 0.75rem;
    border-radius: var(--border-radius);
    font-size: 0.8rem;
    font-weight: 500;
}

.note-meta .priority-low {
    background: #e3f2fd;
    color: #1976d2;
}

.note-meta .priority-medium {
    background: #fff3e0;
    color: #f57c00;
}

.note-meta .priority-high {
    background: #ffebee;
    color: #d32f2f;
}

.note-meta .status-published {
    background: #e8f5e8;
    color: #2e7d32;
    padding: 0.25rem 0.75rem;
    border-radius: var(--border-radius);
    font-size: 0.8rem;
    font-weight: 500;
}

.note-meta .status-draft {
    background: #f3e5f5;
    color: #7b1fa2;
    padding: 0.25rem 0.75rem;
    border-radius: var(--border-radius);
    font-size: 0.8rem;
    font-weight: 500;
}

.note-actions {
    display: flex;
    gap: 0.5rem;
}

.note-content {
    padding: 1.5rem;
}

.note-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.note-footer {
    padding: 1rem 1.5rem;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.note-info {
    display: flex;
    gap: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.note-info span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.note-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.note-tags .tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius);
    font-size: 0.8rem;
    border: 1px solid var(--border-color);
}

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.view-note {
    max-width: 100%;
}

.view-meta {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.view-content {
    background: var(--bg-primary);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
    line-height: 1.8;
    color: var(--text-primary);
}

.view-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.view-info {
    display: flex;
    gap: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.view-info span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.view-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.view-tags .tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius);
    font-size: 0.8rem;
    border: 1px solid var(--border-color);
}

/* Animation Keyframes */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.stat-card,
.quick-actions,
.form-container,
.table-container {
    animation: fadeInUp 0.6s ease-out;
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--primary-color);
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}