/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --background: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --radius: 8px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 头部样式 */
header {
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    gap: 0.5rem;
}

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

.btn:hover:not(:disabled) {
    transform: translateY(-1px);
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
}

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

.btn-secondary:hover:not(:disabled) {
    background: #475569;
}

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

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
}

.btn-icon {
    font-size: 1em;
}

/* 输入框样式 */
.search-input,
.form-input,
.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 0.875rem;
    transition: border-color 0.2s;
}

.search-input:focus,
.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-textarea {
    resize: vertical;
    font-family: inherit;
}

/* 查询页面样式 */
.search-section {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.input-group {
    display: flex;
    gap: 1rem;
}

.input-group .search-input {
    flex: 1;
}

@media (max-width: 640px) {
    .input-group {
        flex-direction: column;
    }
}

.result-section {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.result-content {
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-success {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
}

.result-success h3 {
    color: var(--success-color);
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.result-exists {
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    border-radius: var(--radius);
    padding: 1.5rem;
}

.result-exists h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.record-detail {
    background: white;
    padding: 1rem;
    border-radius: var(--radius);
    margin-top: 1rem;
}

.record-detail-item {
    display: flex;
    margin-bottom: 0.75rem;
}

.record-detail-item:last-child {
    margin-bottom: 0;
}

.record-label {
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 80px;
}

.record-value {
    color: var(--text-primary);
    flex: 1;
    word-break: break-all;
}

.info-section {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.info-section h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.info-section ul {
    list-style: none;
    padding-left: 0;
}

.info-section li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
}

.info-section li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* 管理员后台样式 */
.admin-page .container {
    padding: 1.5rem;
}

.action-bar {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.action-bar .search-box {
    flex: 1;
    min-width: 250px;
}

.records-section {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.records-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: #f8fafc;
}

.records-info {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.records-list {
    max-height: 600px;
    overflow-y: auto;
}

.record-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s;
}

.record-item:last-child {
    border-bottom: none;
}

.record-item:hover {
    background: #f8fafc;
}

.record-content {
    flex: 1;
    min-width: 0;
    margin-right: 1rem;
}

.record-text {
    color: var(--text-primary);
    font-size: 0.9375rem;
    word-break: break-all;
    line-height: 1.5;
    margin-bottom: 0.5rem;
}

.record-meta {
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: flex;
    gap: 1rem;
}

.record-actions {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
}

.record-actions .btn {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
}

.empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--text-secondary);
}

.empty-state .empty-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* 模态框样式 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-content {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: slideUp 0.2s ease;
}

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

.modal-small {
    max-width: 400px;
}

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

.modal-header h2 {
    font-size: 1.25rem;
    color: var(--text-primary);
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.2s;
}

.close-btn:hover {
    background: var(--border-color);
}

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
    margin-top: 2rem;
}

.delete-preview {
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: var(--radius);
    padding: 0.75rem;
    font-size: 0.875rem;
    color: var(--danger-color);
    word-break: break-all;
    margin: 1rem 0;
}

/* 加载状态 */
.loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.loading-spinner {
    border: 2px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    width: 2rem;
    height: 2rem;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 1rem;
}

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

/* 页脚 */
footer {
    margin-top: auto;
    padding-top: 2rem;
    text-align: center;
}

.admin-link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.875rem;
}

.admin-link:hover {
    text-decoration: underline;
}

/* 工具类 */
.hidden {
    display: none !important;
}