/* CSS Variables for theming */
:root {
    --primary-color: #1976d2;
    --primary-dark: #1565c0;
    --success-color: #4caf50;
    --warning-color: #ff9800;
    --error-color: #f44336;
    --info-color: #2196f3;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #868e96;
    --border-color: #dee2e6;
    --shadow: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.15);
    
    --method-get: #61affe;
    --method-post: #49cc90;
    --method-put: #fca130;
    --method-delete: #f93e3e;
}

/* Dark theme */
[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #3d3d3d;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --text-muted: #999999;
    --border-color: #4d4d4d;
    --shadow: 0 2px 4px rgba(0,0,0,0.3);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.4);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

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

/* Header */
.header {
    background: var(--bg-primary);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
}

.theme-toggle:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.status-indicator.online {
    background: rgba(76, 175, 80, 0.1);
    color: var(--success-color);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success-color);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* API Info Cards */
.api-info {
    padding: 2rem 0;
}

.info-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.info-card {
    background: var(--bg-primary);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border-color);
}

.info-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.info-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.info-card h3 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

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

/* Endpoints Section */
.endpoints {
    padding: 2rem 0;
}

.section-title {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.endpoint-group {
    margin-bottom: 2rem;
}

.group-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.group-title i {
    color: var(--primary-color);
}

.endpoint-item {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 0.5rem;
    overflow: hidden;
    transition: all 0.3s ease;
}

.endpoint-item:hover {
    border-color: var(--primary-color);
}

.endpoint-header {
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.endpoint-header:hover {
    background: var(--bg-secondary);
}

.method {
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    min-width: 60px;
    text-align: center;
}

.method.get {
    background: var(--method-get);
    color: white;
}

.method.post {
    background: var(--method-post);
    color: white;
}

.method.put {
    background: var(--method-put);
    color: white;
}

.method.delete {
    background: var(--method-delete);
    color: white;
}

.path {
    font-family: 'Courier New', monospace;
    font-weight: 500;
    color: var(--text-primary);
}

.description {
    color: var(--text-secondary);
    flex: 1;
}

.arrow {
    color: var(--text-muted);
    transition: transform 0.3s ease;
}

.endpoint-item.active .arrow {
    transform: rotate(180deg);
}

.endpoint-content {
    display: none;
    padding: 0 1rem 1rem 1rem;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.endpoint-content.active {
    display: block;
    animation: slideDown 0.3s ease;
}

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

.endpoint-details p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.request-body {
    margin: 1rem 0;
}

.request-body h4 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.json-input {
    width: 100%;
    min-height: 150px;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    resize: vertical;
    transition: border-color 0.3s ease;
}

.json-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.test-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.test-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

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

/* Response Section */
.response-section {
    padding: 2rem 0;
    animation: fadeIn 0.5s ease;
}

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

.response-container {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

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

.response-status {
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.875rem;
}

.response-status.success {
    background: rgba(76, 175, 80, 0.1);
    color: var(--success-color);
}

.response-status.error {
    background: rgba(244, 67, 54, 0.1);
    color: var(--error-color);
}

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

.response-body {
    padding: 1rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    line-height: 1.5;
    white-space: pre-wrap;
    word-break: break-word;
    max-height: 400px;
    overflow-y: auto;
}

/* Loading State */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.test-btn.loading {
    background: var(--text-muted);
}

.test-btn.loading::after {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 0.5rem;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .logo {
        font-size: 1.25rem;
    }
    
    .info-cards {
        grid-template-columns: 1fr;
    }
    
    .endpoint-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .response-header {
        flex-direction: column;
        gap: 0.5rem;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .section-title {
        font-size: 1.5rem;
    }
    
    .group-title {
        font-size: 1.125rem;
    }
    
    .test-btn {
        width: 100%;
        justify-content: center;
    }
}