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

body {
    font-family: 'Sarabun', sans-serif;
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

.required {
    color: #e74c3c;
}

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

.login-container {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    text-align: center;
    max-width: 500px;
    width: 90%;
}

.logo-container {
    margin-bottom: 2rem;
}

.logo {
    max-width: 150px;
    height: auto;
}

.login-container h1 {
    color: #2c3e50;
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.login-container h2 {
    color: #7f8c8d;
    font-size: 1rem;
    margin-bottom: 2rem;
    font-weight: 400;
}

.sign-in-button {
    cursor: pointer;
    display: inline-block;
    transition: transform 0.2s;
}

.sign-in-button:hover {
    transform: scale(1.05);
}

.sign-in-button img {
    max-width: 200px;
}

/* Header */
.header {
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 1.5rem 2rem;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.logo-section {
    flex: 0 0 auto;
}

.header-logo {
    height: 60px;
    width: auto;
}

.title-section {
    flex: 1;
    text-align: center;
    padding: 0 2rem;
}

.title-section h1 {
    color: #2c3e50;
    font-size: 1.5rem;
    margin-bottom: 0.3rem;
}

.title-section p {
    color: #7f8c8d;
    font-size: 0.9rem;
}

.user-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-photo {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid #667eea;
}

.user-name {
    font-weight: 500;
    color: #2c3e50;
}

.sign-out-button {
    padding: 0.5rem 1rem;
    background-color: #e74c3c;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-family: 'Sarabun', sans-serif;
    transition: background-color 0.3s;
}

.sign-out-button:hover {
    background-color: #c0392b;
}

/* Navigation Tabs */
.nav-tabs {
    background: white;
    display: flex;
    justify-content: center;
    padding: 0;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.nav-tab {
    padding: 1rem 2rem;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-family: 'Sarabun', sans-serif;
    font-size: 1rem;
    color: #7f8c8d;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-tab:hover {
    background-color: #f8f9fa;
    color: #667eea;
}

.nav-tab.active {
    color: #667eea;
    border-bottom-color: #667eea;
    background-color: #f8f9fa;
}

.nav-tab .icon {
    font-size: 1.2rem;
}

/* Main Content */
.main-content {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

/* Filter Section */
.filter-section {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    margin-bottom: 2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.filter-section h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.filter-controls {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

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

.filter-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #555;
    font-weight: 500;
}

.filter-select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: 'Sarabun', sans-serif;
    font-size: 1rem;
    background-color: white;
    cursor: pointer;
}

.filter-select:focus {
    outline: none;
    border-color: #667eea;
}

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

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
    overflow: hidden;
}

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

.stat-card.purple::before {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

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

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

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

.stat-icon {
    font-size: 2.5rem;
    opacity: 0.8;
}

.stat-content {
    flex: 1;
}

.stat-label {
    color: #7f8c8d;
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
}

.stat-value {
    color: #2c3e50;
    font-size: 2rem;
    font-weight: 700;
}

/* Chart Section */
.chart-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.chart-card {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.chart-card h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    text-align: center;
    font-size: 1.1rem;
}

/* Table Section */
.table-section {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    margin-bottom: 2rem;
}

.table-section h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.table-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.entries-select {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: 'Sarabun', sans-serif;
    margin: 0 0.5rem;
}

.search-input {
    padding: 0.5rem 1rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: 'Sarabun', sans-serif;
    min-width: 250px;
}

.search-input:focus {
    outline: none;
    border-color: #667eea;
}

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

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
}

.data-table thead {
    background-color: #34495e;
    color: white;
}

.data-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 500;
    white-space: nowrap;
}

.data-table tbody tr {
    border-bottom: 1px solid #ecf0f1;
    transition: background-color 0.2s;
}

.data-table tbody tr:hover {
    background-color: #f8f9fa;
}

.data-table td {
    padding: 1rem;
}

/* Status Badge */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.status-badge.success {
    background-color: #d4edda;
    color: #155724;
}

.status-badge.success::before {
    content: '✓';
    font-weight: bold;
}

.status-badge.danger {
    background-color: #f8d7da;
    color: #721c24;
}

.status-badge.danger::before {
    content: '✗';
    font-weight: bold;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 0.5rem;
}

.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-family: 'Sarabun', sans-serif;
    font-size: 0.9rem;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background-color: #667eea;
    color: white;
}

.btn-primary:hover {
    background-color: #5568d3;
}

.btn-secondary {
    background-color: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background-color: #7f8c8d;
}

.btn-warning {
    background-color: #f39c12;
    color: white;
}

.btn-warning:hover {
    background-color: #e67e22;
}

.btn-danger {
    background-color: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background-color: #c0392b;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.pagination button {
    padding: 0.5rem 1rem;
    border: 1px solid #ddd;
    background-color: white;
    border-radius: 5px;
    cursor: pointer;
    font-family: 'Sarabun', sans-serif;
    transition: all 0.3s;
}

.pagination button:hover:not(:disabled) {
    background-color: #667eea;
    color: white;
    border-color: #667eea;
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination button.active {
    background-color: #667eea;
    color: white;
    border-color: #667eea;
}

/* Form Container */
.form-container {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    max-width: 800px;
    margin: 0 auto;
}

.form-container h2 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
    text-align: center;
}

.data-form {
    width: 100%;
}

.form-group {
    margin-bottom: 1.5rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #555;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: 'Sarabun', sans-serif;
    font-size: 1rem;
}

.form-control:focus {
    outline: none;
    border-color: #667eea;
}

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

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

/* Settings Page */
.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.settings-header h2 {
    color: #2c3e50;
    font-size: 1.8rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal.show {
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.3);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid #ecf0f1;
}

.modal-header h2 {
    color: #2c3e50;
    font-size: 1.5rem;
}

.close {
    font-size: 2rem;
    font-weight: bold;
    color: #95a5a6;
    cursor: pointer;
    transition: color 0.3s;
}

.close:hover {
    color: #2c3e50;
}

.modal-content form {
    padding: 1.5rem;
}

/* Toggle Switch */
input[type="checkbox"] {
    cursor: pointer;
    width: 18px;
    height: 18px;
}

/* Loading Spinner */
.loading-spinner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.spinner {
    border: 5px solid #f3f3f3;
    border-top: 5px solid #667eea;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    animation: spin 1s linear infinite;
}

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

.loading-spinner p {
    color: white;
    margin-top: 1rem;
    font-size: 1.1rem;
}

/* Footer */
.footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 3rem;
}

.footer p {
    margin: 0.5rem 0;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }

    .title-section {
        padding: 0;
    }

    .title-section h1 {
        font-size: 1.2rem;
    }

    .nav-tabs {
        flex-direction: column;
    }

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

    .chart-section {
        grid-template-columns: 1fr;
    }

    .table-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .search-input {
        min-width: 100%;
    }

    .data-table {
        font-size: 0.85rem;
    }

    .data-table th,
    .data-table td {
        padding: 0.5rem;
    }

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

    .settings-header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
}

/* Active Toggle Switch */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: 0.4s;
    border-radius: 24px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.4s;
    border-radius: 50%;
}

input:checked + .toggle-slider {
    background-color: #43e97b;
}

input:checked + .toggle-slider:before {
    transform: translateX(26px);
}