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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Login Screen Styles */
.login-screen {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
}

.login-container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    padding: 40px;
    width: 100%;
    max-width: 400px;
    text-align: center;
}

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

.login-header i {
    font-size: 48px;
    color: #667eea;
    margin-bottom: 15px;
}

.login-header h1 {
    color: #2d3748;
    font-size: 24px;
    margin-bottom: 10px;
    font-weight: 600;
}

.login-header p {
    color: #718096;
    font-size: 14px;
}

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

.login-form .form-group {
    margin-bottom: 20px;
}

.login-form label {
    display: block;
    margin-bottom: 8px;
    color: #4a5568;
    font-weight: 500;
    font-size: 14px;
}

.login-form label i {
    margin-right: 8px;
    color: #667eea;
}

.login-form input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: #f7fafc;
}

.login-form input:focus {
    outline: none;
    border-color: #667eea;
    background: white;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.login-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

.login-btn i {
    margin-right: 8px;
}

.login-error {
    background: #fed7d7;
    color: #c53030;
    padding: 12px;
    border-radius: 8px;
    margin-top: 15px;
    font-size: 14px;
    border: 1px solid #feb2b2;
}

/* Main App Styles */
.main-app {
    min-height: 100vh;
}

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

/* Sidebar */
.sidebar {
    width: 280px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px 0;
    box-shadow: 2px 0 10px rgba(0,0,0,0.1);
    z-index: 1000;
}

.sidebar-header {
    display: flex;
    align-items: center;
    padding: 0 20px 30px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 20px;
    position: relative;
}

.sidebar-header i {
    font-size: 24px;
    margin-right: 12px;
}

.sidebar-header h2 {
    font-size: 20px;
    font-weight: 600;
}

.logout-btn {
    position: absolute;
    top: 0;
    right: 0;
    background: none;
    border: none;
    color: rgba(255,255,255,0.7);
    cursor: pointer;
    padding: 5px;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.logout-btn:hover {
    color: white;
    background: rgba(255,255,255,0.1);
}

.nav-menu {
    list-style: none;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background-color: rgba(255,255,255,0.1);
    border-left-color: rgba(255,255,255,0.5);
}

.nav-item.active {
    background-color: rgba(255,255,255,0.2);
    border-left-color: white;
}

.nav-item i {
    font-size: 18px;
    margin-right: 12px;
    width: 20px;
    text-align: center;
}

.nav-item span {
    font-weight: 500;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Header */
.header {
    background: white;
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    z-index: 100;
}

.header h1 {
    font-size: 24px;
    font-weight: 600;
    color: #2d3748;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
}

.user-info i {
    font-size: 20px;
    color: #667eea;
}

/* Content */
.content {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
}

/* Pages */
.page {
    display: none;
}

.page.active {
    display: block;
}

/* Dashboard */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    display: flex;
    align-items: center;
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-size: 24px;
}

.stat-icon.occupied {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.stat-icon.available {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.stat-icon.revenue {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.stat-info h3 {
    font-size: 28px;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 5px;
}

.stat-info p {
    color: #718096;
    font-weight: 500;
}

.dashboard-charts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
}

.chart-container {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.chart-container h3 {
    margin-bottom: 20px;
    font-weight: 600;
    color: #2d3748;
}

.chart {
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f7fafc;
    border-radius: 8px;
    color: #718096;
}

/* Page Headers */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.page-header h2 {
    font-size: 24px;
    font-weight: 600;
    color: #2d3748;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    font-size: 14px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #e2e8f0;
    color: #4a5568;
}

.btn-secondary:hover {
    background: #cbd5e0;
}

.btn-danger {
    background: #f56565;
    color: white;
}

.btn-danger:hover {
    background: #e53e3e;
}

.btn-success {
    background: #48bb78;
    color: white;
}

.btn-success:hover {
    background: #38a169;
}

/* Rooms Grid */
.rooms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.room-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
    border-left: 4px solid #e2e8f0;
}

.room-card:hover {
    transform: translateY(-2px);
}

.room-card.available {
    border-left-color: #48bb78;
}

.room-card.occupied {
    border-left-color: #f56565;
}

.room-card.reserved {
    border-left-color: #ed8936;
}

.room-card.cleaning {
    border-left-color: #4299e1;
}

.room-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.room-number {
    font-size: 20px;
    font-weight: 600;
    color: #2d3748;
}

.room-status {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
}

.room-status.available {
    background: #c6f6d5;
    color: #22543d;
}

.room-status.occupied {
    background: #fed7d7;
    color: #742a2a;
}

.room-status.reserved {
    background: #feebc8;
    color: #744210;
}

.room-status.cleaning {
    background: #bee3f8;
    color: #2a4365;
}

.room-info {
    margin-bottom: 15px;
}

.room-info p {
    margin-bottom: 5px;
    color: #718096;
}

.room-info strong {
    color: #2d3748;
}

.room-actions {
    display: flex;
    gap: 8px;
}

.room-actions .btn {
    flex: 1;
    padding: 8px 12px;
    font-size: 12px;
}

/* Tables */
.table-container {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    overflow: hidden;
}

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

.data-table th,
.data-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

.data-table th {
    background: #f7fafc;
    font-weight: 600;
    color: #4a5568;
    font-size: 14px;
}

.data-table td {
    color: #2d3748;
}

.data-table tbody tr:hover {
    background: #f7fafc;
}

/* Payment Summary */
.payment-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.summary-card {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    text-align: center;
}

.summary-card h4 {
    color: #718096;
    font-size: 14px;
    margin-bottom: 10px;
}

.summary-card p {
    font-size: 24px;
    font-weight: 700;
    color: #2d3748;
}

/* Cleaning Grid */
.cleaning-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.cleaning-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border-left: 4px solid #4299e1;
}

.cleaning-card h4 {
    margin-bottom: 15px;
    color: #2d3748;
}

.cleaning-status {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.cleaning-status .status {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    background: #bee3f8;
    color: #2a4365;
}

.cleaning-actions {
    display: flex;
    gap: 8px;
}

/* Reports */
.report-actions {
    display: flex;
    gap: 10px;
}

.reports-grid {
    display: flex;
    gap: 24px;
    margin-top: 24px;
}

.report-card {
    flex: 1;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    padding: 24px;
}

.report-card h3 {
    margin-bottom: 20px;
    font-weight: 600;
    color: #2d3748;
}

.occupancy-chart,
.monthly-revenue-chart {
    min-height: 120px;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 0;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    padding: 20px 25px;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: #2d3748;
}

.close {
    color: #a0aec0;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s ease;
}

.close:hover {
    color: #2d3748;
}

/* Forms */
form {
    padding: 25px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #4a5568;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-group input[type="checkbox"] {
    width: auto;
    margin-right: 8px;
}

.form-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 30px;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 70px;
    }
    
    .sidebar-header h2,
    .nav-item span {
        display: none;
    }
    
    .nav-item {
        justify-content: center;
        padding: 15px;
    }
    
    .nav-item i {
        margin-right: 0;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-charts {
        grid-template-columns: 1fr;
    }
    
    .page-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
    
    .report-actions {
        flex-direction: column;
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
    }
}

/* Loading States */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    color: #718096;
}

.loading::after {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid #e2e8f0;
    border-top: 2px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 10px;
}

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

/* Status Badges */
.status-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
}

.status-badge.aktiv {
    background: #c6f6d5;
    color: #22543d;
}

.status-badge.check-in {
    background: #bee3f8;
    color: #2a4365;
}

.status-badge.check-out {
    background: #fed7d7;
    color: #742a2a;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mb-20 { margin-bottom: 20px; }
.mt-20 { margin-top: 20px; }
.hidden { display: none; }

#add-reservation-modal .modal-content {
    top: 10% !important;
    transform: translateY(0) !important;
    max-height: 85vh;
    overflow-y: auto;
}

#add-payment-modal .modal-content {
    top: 12% !important;
    transform: translateY(0) !important;
    max-height: 80vh;
    overflow-y: auto;
}

.report-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
    margin-bottom: 24px;
}
.report-filters label {
    font-weight: 500;
}
#report-result {
    margin-top: 24px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    padding: 24px;
    min-height: 120px;
}