:root {
    --primary-color: #00829A;
    --primary-dark: #005f73;
    --primary-light: #0a9396;
    --secondary-color: #f8f9fa;
    --text-dark: #343a40;
    --text-light: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --border-color: #dee2e6;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --radius: 6px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--secondary-color);
    min-height: 100vh;
}

a {
    text-decoration: none;
    color: var(--primary-color);
}

ul {
    list-style: none;
}

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

/* 通用样式 */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.btn-success {
    background-color: var(--success-color);
    color: white;
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: var(--text-dark);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: #e9ecef;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.input-group {
    margin-bottom: 15px;
}

.input-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--text-dark);
}

.input-group input,
.input-group select,
.input-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 14px;
    transition: border-color 0.3s;
}

.input-group input:focus,
.input-group select:focus,
.input-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group {
    margin-bottom: 0px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-dark);
}

.form-control {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 14px;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
}

.card {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
    margin-bottom: 20px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 15px;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
}

.card-body {
    padding: 0;
}

.card-footer {
    padding: 15px;
    border-top: 1px solid var(--border-color);
}

/* 表格样式 */
.table-container {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

.table thead {
    background-color: var(--primary-color);
    color: white;
}

.table th,
.table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table tbody tr:hover {
    background-color: var(--secondary-color);
}

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

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

/* 表单样式 */
.form-control-sm {
    padding: 6px 10px;
    font-size: 13px;
}

.form-control-lg {
    padding: 14px 16px;
    font-size: 16px;
}

/* 徽章 */
.badge {
    display: inline-block;
    padding: 4px 8px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 4px;
}

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

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

.badge-warning {
    background-color: #fff3cd;
    color: #856404;
}

.badge-info {
    background-color: #d1ecf1;
    color: #0c5460;
}

/* 标签 */
.label {
    display: inline-block;
    padding: 4px 10px;
    background-color: var(--secondary-color);
    border-radius: 4px;
    font-size: 12px;
    color: var(--text-light);
}

/* 页头 */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 40px 20px;
    margin-bottom: 30px;
}

.page-header h1 {
    font-size: 28px;
    margin-bottom: 10px;
}

.page-header p {
    opacity: 0.9;
}

/* 导航栏 */
.navbar {
    background-color: white;
    box-shadow: var(--shadow);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.navbar-brand {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-color);
}

.navbar-menu {
    display: flex;
    gap: 20px;
}

.navbar-menu a {
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s;
}

.navbar-menu a:hover,
.navbar-menu a.active {
    color: var(--primary-color);
}

/* 页脚 */
.footer {
    background-color: var(--text-dark);
    color: white;
    padding: 30px 0;
    margin-top: 50px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: center;
}

/* 标签页 */
.tabs {
    display: flex;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 20px;
}

.tab {
    padding: 12px 24px;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-light);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all 0.3s;
}

.tab:hover {
    color: var(--primary-color);
}

.tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* 进度条 */
.progress {
    height: 8px;
    background-color: var(--secondary-color);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background-color: var(--primary-color);
    transition: width 0.3s;
}

/* 状态提示 */
.alert {
    padding: 15px;
    border-radius: var(--radius);
    margin-bottom: 20px;
}

.alert-success {
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
}

.alert-danger {
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
}

.alert-warning {
    background-color: #fff3cd;
    border: 1px solid #ffeaa7;
    color: #856404;
}

.alert-info {
    background-color: #d1ecf1;
    border: 1px solid #bee5eb;
    color: #0c5460;
}

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

.modal.active {
    display: flex;
}

.modal-content {
    background-color: white;
    border-radius: var(--radius);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--secondary-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* === 汉堡菜单按钮 === */
.navbar-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-dark);
    cursor: pointer;
    padding: 6px 10px;
    border-radius: 4px;
    transition: background-color 0.3s;
    -webkit-tap-highlight-color: transparent;
}
.navbar-toggle:hover {
    background-color: var(--secondary-color);
}
.navbar-toggle.active {
    color: var(--primary-color);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    .page-header {
        padding: 20px 10px;
        border-radius: 0 !important;
        margin-left: -10px;
        margin-right: -10px;
    }

    .page-header h1 {
        font-size: 22px;
    }

    .page-header p {
        font-size: 14px;
    }

    /* 汉堡菜单导航 */
    .navbar-toggle {
        display: block;
    }
    .navbar-content {
        flex-wrap: wrap;
    }
    .navbar-menu {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 0;
        padding: 10px 0;
        border-top: 1px solid var(--border-color);
        margin-top: 10px;
    }
    .navbar-menu.open {
        display: flex;
    }
    .navbar-menu a,
    .navbar-menu .user-profile-btn {
        padding: 12px 10px !important;
        border-radius: 6px;
        font-size: 15px;
    }
    .navbar-menu a:hover,
    .navbar-menu a.active,
    .navbar-menu .user-profile-btn:hover {
        background-color: var(--secondary-color);
    }

    /* 通用表格滚动 */
    .table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .table {
        font-size: 13px;
    }

    .table th,
    .table td {
        padding: 10px 8px;
    }

    /* 触摸友好：按钮与输入框最小高度 */
    .btn,
    button,
    input,
    select,
    textarea {
        min-height: 44px;
    }

    .btn {
        padding: 10px 16px;
        font-size: 14px;
    }

    .card {
        padding: 15px;
    }

    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    /* 模态框移动端 */
    .modal-content {
        width: 92% !important;
        margin: 10% auto !important;
        max-height: 85vh !important;
    }
    .modal-content .modal-header {
        padding: 15px;
    }
    .modal-content .modal-body {
        padding: 15px;
    }
    .modal-content .modal-footer {
        padding: 15px;
    }
}

/* 超小屏幕（手机竖屏 ≤ 480px） */
@media (max-width: 480px) {
    .container {
        padding: 8px;
    }

    .page-header {
        padding: 16px 8px;
        margin-left: -8px;
        margin-right: -8px;
    }
    .page-header h1 {
        font-size: 19px;
    }
    .page-header p {
        font-size: 13px;
    }

    .table {
        font-size: 12px;
    }
    .table th,
    .table td {
        padding: 8px 6px;
    }

    .btn {
        padding: 8px 12px;
        font-size: 13px;
    }

    .modal-content {
        width: 96% !important;
        margin: 5% auto !important;
    }
}

/* ===== 表格卡片模式（用于 my_inquiries.php 等页面） ===== */
@media (max-width: 768px) {
    .table-card-mode thead {
        display: none;
    }
    .table-card-mode,
    .table-card-mode tbody,
    .table-card-mode tr,
    .table-card-mode td {
        display: block;
    }
    .table-card-mode tr {
        background: white;
        border: 1px solid var(--border-color);
        border-radius: 6px;
        padding: 8px 10px;
        margin-bottom: 8px;
        box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    }
    .table-card-mode td {
        padding: 3px 0;
        border: none;
        text-align: right;
        font-size: 13px;
    }
    .table-card-mode td::before {
        content: attr(data-label);
        float: left;
        font-weight: 600;
        color: var(--text-dark);
        font-size: 12px;
    }
    .table-card-mode td:last-child {
        padding-top: 6px;
        border-top: 1px solid var(--border-color);
        margin-top: 4px;
        text-align: left;
    }
    .table-card-mode td:last-child::before {
        display: none;
    }
    .table-card-mode td:last-child > div {
        display: flex;
        flex-wrap: wrap;
        gap: 6px;
    }
    .table-card-mode td:last-child .btn-edit,
    .table-card-mode td:last-child .btn-view,
    .table-card-mode td:last-child .btn-delete {
        flex: 1;
        justify-content: center;
        padding: 8px 6px;
        font-size: 13px;
        min-height: 38px;
    }
}