/* Reset and base styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f5f6fa;
    color: #2c3e50;
    line-height: 1.6;
}

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

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid #e1e5eb;
}

.header h1 {
    font-size: 1.5rem;
    color: #2c3e50;
}

/* Cards */
.card {
    background: #fff;
    border-radius: 8px;
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.card h2 {
    margin-bottom: 16px;
    font-size: 1.15rem;
    color: #34495e;
}

.card h3 {
    font-size: 1rem;
    color: #34495e;
}

/* Form elements */
.form-row {
    display: flex;
    gap: 16px;
    align-items: flex-end;
    flex-wrap: wrap;
}

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 16px;
}

.form-group-grow {
    flex: 1;
    min-width: 250px;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: #555;
    margin-bottom: 6px;
}

.form-group input,
.form-group select {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 0.95rem;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.15);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background-color: #3498db;
    color: #fff;
}

.btn-primary:hover {
    background-color: #2980b9;
}

.btn-success {
    background-color: #27ae60;
    color: #fff;
    padding: 12px 32px;
    font-size: 1.05rem;
}

.btn-success:hover {
    background-color: #219a52;
}

.btn-outline {
    background-color: transparent;
    color: #666;
    border: 1px solid #ddd;
    padding: 6px 14px;
    font-size: 0.85rem;
}

.btn-outline:hover {
    background-color: #f5f5f5;
}

.btn-sm {
    padding: 6px 14px;
    font-size: 0.85rem;
}

.btn-full {
    width: 100%;
}

/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.alert-error {
    background-color: #fdf0f0;
    color: #c0392b;
    border: 1px solid #f5c6cb;
}

.alert-success {
    background-color: #f0fdf4;
    color: #27ae60;
    border: 1px solid #c3e6cb;
}

/* Preview header */
.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.preview-stats {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.badge {
    display: inline-block;
    padding: 4px 10px;
    background-color: #ebf5fb;
    color: #2980b9;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.badge-total {
    background-color: #ebf5fb;
    color: #2980b9;
}

.badge-success {
    background-color: #f0fdf4;
    color: #27ae60;
}

.badge-error {
    background-color: #fdf0f0;
    color: #c0392b;
}

.result-summary {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.badge-warning {
    background-color: #fef9e7;
    color: #d4a017;
}

.row-error td {
    background-color: #fdf0f0;
}

.row-warning td {
    background-color: #fef9e7;
}

/* Table */
.table-wrapper {
    overflow-x: auto;
    margin-top: 16px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

thead th {
    background-color: #f8f9fa;
    padding: 10px 12px;
    text-align: left;
    font-weight: 600;
    color: #555;
    border-bottom: 2px solid #e1e5eb;
    white-space: nowrap;
}

tbody td {
    padding: 8px 12px;
    border-bottom: 1px solid #eee;
}

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

/* JSON preview */
.json-preview {
    background-color: #1e1e2e;
    color: #a6e3a1;
    padding: 16px;
    border-radius: 6px;
    font-family: "JetBrains Mono", "Fira Code", "Consolas", monospace;
    font-size: 0.8rem;
    line-height: 1.5;
    overflow-x: auto;
    max-height: 500px;
    overflow-y: auto;
    margin-top: 12px;
    white-space: pre;
}

/* API response */
.api-response {
    background-color: #2d2d2d;
    color: #f8f8f2;
    padding: 16px;
    border-radius: 6px;
    font-family: "JetBrains Mono", "Fira Code", "Consolas", monospace;
    font-size: 0.85rem;
    line-height: 1.5;
    overflow-x: auto;
    max-height: 400px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* Details/Summary */
details summary {
    cursor: pointer;
    padding: 4px 0;
}

details summary:hover {
    color: #3498db;
}

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

.login-card {
    background: #fff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    width: 100%;
    max-width: 400px;
}

.login-card h1 {
    text-align: center;
    margin-bottom: 4px;
    color: #2c3e50;
    font-size: 1.4rem;
}

.login-card .subtitle {
    text-align: center;
    color: #999;
    margin-bottom: 24px;
    font-size: 0.9rem;
}

/* Loading overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-content {
    background: #fff;
    padding: 32px 48px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.loading-content p {
    margin-top: 16px;
    font-size: 1rem;
    color: #555;
    font-weight: 600;
}

.spinner {
    width: 40px;
    height: 40px;
    margin: 0 auto;
    border: 4px solid #e1e5eb;
    border-top: 4px solid #3498db;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Responsive */
@media (max-width: 768px) {
    .form-row {
        flex-direction: column;
    }

    .header {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .preview-header {
        flex-direction: column;
    }
}