/* Hospital Management System - Frontend Styles */

:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --sidebar-width: 250px;
    --sidebar-collapsed-width: 0px;
    --navbar-height: 56px;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
    min-height: 100vh;
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0d6efd 0%, #0a58ca 100%);
    padding: 20px;
}

.login-box {
    background: white;
    border-radius: 16px;
    padding: 40px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header i {
    font-size: 48px;
    color: var(--primary-color);
}

.login-header h1 {
    font-size: 24px;
    margin: 10px 0 5px;
    color: #333;
}

.login-header p {
    color: #666;
    margin: 0;
}

.demo-credentials {
    margin-top: 20px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
    text-align: center;
    font-size: 13px;
}

.demo-credentials p {
    margin-bottom: 5px;
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    width: var(--sidebar-width);
    height: calc(100vh - var(--navbar-height));
    background: #212529;
    overflow-y: auto;
    transition: transform 0.3s ease;
    z-index: 1000;
}

.sidebar.collapsed {
    transform: translateX(-100%);
}

.sidebar-nav {
    padding: 15px 0;
}

.sidebar-nav .nav-link {
    color: rgba(255, 255, 255, 0.8);
    padding: 12px 20px;
    display: flex;
    align-items: center;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.sidebar-nav .nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.sidebar-nav .nav-link.active {
    background: rgba(13, 110, 253, 0.2);
    color: white;
    border-left-color: var(--primary-color);
}

.sidebar-nav .nav-link i {
    width: 24px;
    margin-right: 10px;
    font-size: 18px;
}

.sidebar-nav .nav-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin: 10px 20px;
}

.sidebar-nav .nav-header {
    color: rgba(255, 255, 255, 0.5);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 15px 20px 5px;
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    margin-top: var(--navbar-height);
    padding: 20px;
    min-height: calc(100vh - var(--navbar-height));
    transition: margin-left 0.3s ease;
}

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

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.page-header h1 {
    font-size: 24px;
    margin: 0;
    display: flex;
    align-items: center;
}

.page-header h1 i {
    margin-right: 10px;
    color: var(--primary-color);
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.stat-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    display: flex;
    align-items: center;
}

.stat-card .stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-right: 15px;
}

.stat-card .stat-icon.primary { background: rgba(13, 110, 253, 0.1); color: var(--primary-color); }
.stat-card .stat-icon.success { background: rgba(25, 135, 84, 0.1); color: var(--success-color); }
.stat-card .stat-icon.warning { background: rgba(255, 193, 7, 0.1); color: var(--warning-color); }
.stat-card .stat-icon.info { background: rgba(13, 202, 240, 0.1); color: var(--info-color); }
.stat-card .stat-icon.danger { background: rgba(220, 53, 69, 0.1); color: var(--danger-color); }

.stat-card .stat-info h3 {
    font-size: 28px;
    margin: 0;
    font-weight: 600;
}

.stat-card .stat-info p {
    margin: 0;
    color: #666;
    font-size: 14px;
}

/* Cards */
.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    margin-bottom: 20px;
}

.card-header {
    background: white;
    border-bottom: 1px solid #eee;
    font-weight: 600;
    padding: 15px 20px;
    border-radius: 12px 12px 0 0 !important;
}

.card-body {
    padding: 20px;
}

/* Tables */
.table {
    margin-bottom: 0;
}

.table th {
    font-weight: 600;
    color: #495057;
    border-bottom: 2px solid #dee2e6;
    white-space: nowrap;
}

.table td {
    vertical-align: middle;
}

.action-btns .btn {
    padding: 4px 8px;
    margin-right: 5px;
}

.action-btns .btn:last-child {
    margin-right: 0;
}

/* Status Badges */
.badge-status {
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.badge-status.active, .badge-status.completed, .badge-status.paid { background: #d1e7dd; color: #0f5132; }
.badge-status.inactive, .badge-status.cancelled { background: #f8d7da; color: #842029; }
.badge-status.pending, .badge-status.scheduled { background: #fff3cd; color: #664d03; }
.badge-status.in_progress, .badge-status.admitted { background: #cff4fc; color: #055160; }

/* Forms */
.form-label {
    font-weight: 500;
    color: #333;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.15);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #666;
}

.empty-state i {
    font-size: 64px;
    color: #ddd;
    margin-bottom: 20px;
}

.empty-state h5 {
    color: #333;
    margin-bottom: 10px;
}

/* Quick Actions */
.quick-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* Responsive */
@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
    }

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

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

    .sidebar-overlay {
        position: fixed;
        top: var(--navbar-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        display: none;
    }

    .sidebar-overlay.show {
        display: block;
    }
}

@media (max-width: 767.98px) {
    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .page-header h1 {
        font-size: 20px;
    }

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

    .stat-card {
        padding: 15px;
    }

    .stat-card .stat-icon {
        width: 50px;
        height: 50px;
        font-size: 20px;
    }

    .stat-card .stat-info h3 {
        font-size: 24px;
    }

    .card-body {
        padding: 15px;
    }

    .table-responsive {
        font-size: 14px;
    }

    .action-btns .btn {
        padding: 3px 6px;
        font-size: 12px;
    }

    .login-box {
        padding: 30px 20px;
    }
}

@media (max-width: 575.98px) {
    .main-content {
        padding: 15px;
    }

    .quick-actions {
        width: 100%;
    }

    .quick-actions .btn {
        flex: 1;
    }
}

/* Loading Spinner */
.loading-spinner {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
}

.loading-spinner::after {
    content: '';
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Print Styles */
@media print {
    .sidebar, .navbar, .btn, .quick-actions {
        display: none !important;
    }

    .main-content {
        margin: 0 !important;
        padding: 0 !important;
    }
}