/* 全域樣式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft JhengHei', 'PingFang TC', 'Helvetica Neue', Arial, sans-serif;
    background: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

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

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    padding: 40px;
}

.login-box h1 {
    color: #333;
    margin-bottom: 10px;
    font-size: 28px;
    text-align: center;
}

.subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 30px;
    font-size: 14px;
}

/* 表單樣式 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-weight: 500;
    font-size: 14px;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="email"],
.form-group input[type="date"],
.form-group input[type="number"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    font-family: inherit;
}

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

.form-group small {
    display: block;
    margin-top: 5px;
    color: #999;
    font-size: 12px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

/* 手機支援 - 全域 */
@media (max-width: 768px) {
    body {
        font-size: 14px;
    }
    
    .container {
        padding: 15px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .form-group {
        margin-bottom: 15px;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 16px; /* 防止 iOS 自動縮放 */
    }
    
    .page-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start !important;
    }
    
    .page-header h1 {
        font-size: 24px;
    }
    
    .page-header > div {
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .btn {
        font-size: 14px;
        padding: 10px 16px;
    }
    
    .btn-sm {
        font-size: 12px;
        padding: 6px 10px;
    }
    
    .table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        margin: 0 -15px;
        padding: 0 15px;
    }
    
    .records-table,
    .class-table {
        min-width: 800px;
        font-size: 13px;
    }
    
    .records-table th,
    .records-table td,
    .class-table th,
    .class-table td {
        padding: 8px 5px;
        font-size: 12px;
    }
    
    .content-cell {
        max-width: 200px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    
    .card {
        margin-bottom: 15px;
    }
    
    .card-header {
        flex-direction: column;
        gap: 10px;
        align-items: flex-start !important;
    }
    
    .card-actions {
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .empty-state {
        padding: 30px 15px;
    }
    
    .alert {
        margin: 15px 0;
        padding: 12px;
        font-size: 14px;
    }
    
    .form-container {
        padding: 20px 15px;
    }
    
    .form-actions {
        flex-direction: column;
        gap: 10px;
    }
    
    .form-actions .btn {
        width: 100%;
    }
    
    .search-container {
        padding: 15px;
    }
    
    .search-results h3 {
        font-size: 16px;
    }
    
    .search-results > div {
        flex-direction: column;
        align-items: flex-start !important;
        gap: 10px;
    }
    
    .search-results > div > div {
        width: 100%;
        display: flex;
        gap: 8px;
    }
    
    .stat-cards {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .class-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .overview-container {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .sidebar {
        order: 2;
    }
    
    .main-content {
        order: 1;
        padding: 20px 15px;
    }
}

/* 平板支援 */
@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        padding: 20px;
    }
    
    .form-row {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .records-table,
    .class-table {
        font-size: 13px;
    }
    
    .stat-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .class-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 按鈕樣式 */
.btn {
    display: inline-block;
    padding: 10px 20px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    text-decoration: none;
    transition: background 0.3s;
}

.btn:hover {
    background: #5568d3;
}

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

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

.btn-secondary {
    background: #6c757d;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-danger {
    background: #dc3545;
}

.btn-danger:hover {
    background: #c82333;
}

.btn-block {
    width: 100%;
    display: block;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

/* Header */
.main-header {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    font-size: 20px;
    font-weight: bold;
    color: #667eea;
    text-decoration: none;
}

.main-nav {
    display: flex;
    gap: 20px;
}

.main-nav a {
    color: #555;
    text-decoration: none;
    padding: 8px 15px;
    border-radius: 5px;
    transition: all 0.3s;
}

.main-nav a:hover {
    background: #f0f0f0;
    color: #667eea;
}

.logout-link {
    color: #dc3545 !important;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 20px;
}

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

.page-header h1 {
    font-size: 28px;
    color: #333;
}

/* Alert */
.alert {
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.alert-error {
    background: #fee;
    color: #c33;
    border: 1px solid #fcc;
}

.alert-success {
    background: #efe;
    color: #3c3;
    border: 1px solid #cfc;
}

/* Class Grid */
.class-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.class-card {
    background: white;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.class-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.class-card h3 {
    color: #333;
    margin-bottom: 10px;
    font-size: 20px;
}

.class-desc {
    color: #666;
    font-size: 14px;
    margin-bottom: 20px;
}

.class-actions {
    display: flex;
    gap: 10px;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #999;
}

.empty-state p {
    font-size: 16px;
    margin-bottom: 10px;
}

/* Form Container */
.form-container {
    background: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    max-width: 800px;
}

.form-container h2 {
    margin-bottom: 25px;
    color: #333;
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 25px;
}

/* Table */
.table-container {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.records-table thead {
    background: #667eea;
    color: white;
}

.records-table th,
.records-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.records-table th {
    font-weight: 600;
    font-size: 14px;
}

.records-table td {
    font-size: 14px;
}

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

.content-cell {
    max-width: 400px;
    white-space: pre-wrap;
    word-wrap: break-word;
}

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

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

.modal-content {
    background: white;
    border-radius: 10px;
    padding: 30px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
}

.modal-content h2 {
    margin-bottom: 20px;
    color: #333;
}

.close {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 28px;
    font-weight: bold;
    color: #aaa;
    cursor: pointer;
}

.close:hover {
    color: #333;
}

.modal-form {
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 1px solid #eee;
}

.student-list,
.event-type-list {
    max-height: 300px;
    overflow-y: auto;
}

.student-item,
.event-type-item {
    padding: 10px;
    background: #f8f9fa;
    margin-bottom: 8px;
    border-radius: 5px;
    font-size: 14px;
}

/* Search */
.search-container {
    background: white;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 30px;
}

.search-results {
    margin-top: 30px;
}

.search-results h3 {
    margin-bottom: 20px;
    color: #333;
}

/* Info Box */
.info-box {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 5px;
    border-left: 4px solid #667eea;
}

.info-box h3 {
    margin-bottom: 15px;
    color: #333;
}

.info-box p {
    margin-bottom: 8px;
    color: #555;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 15px;
    }
    
    .main-nav {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .class-grid {
        grid-template-columns: 1fr;
    }
    
    .table-container {
        overflow-x: auto;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions .btn {
        width: 100%;
    }
}

/* Footer 樣式 */
.main-footer {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    margin-top: 60px;
    padding: 40px 20px 20px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-ad {
    background: white;
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 30px;
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer-copyright {
    text-align: center;
    padding: 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-copyright p {
    margin: 8px 0;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.9);
}

.footer-designer {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
}

.footer-designer a {
    color: #FFE66D;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

.footer-designer a:hover {
    color: #FFF;
    text-decoration: underline;
}

/* Footer 手機支援 */
@media (max-width: 768px) {
    .main-footer {
        margin-top: 40px;
        padding: 30px 15px 15px;
    }
    
    .footer-ad {
        padding: 15px;
        margin-bottom: 20px;
    }
    
    .footer-copyright {
        padding: 15px 0;
    }
    
    .footer-copyright p {
        font-size: 13px;
    }
    
    .footer-designer {
        font-size: 12px;
    }
}