/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

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

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo i {
    font-size: 2rem;
    color: #667eea;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: #333;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: #f8f9fa;
    border-radius: 20px;
    font-size: 0.9rem;
}

.status-indicator.online i {
    color: #28a745;
}

.status-indicator.offline i {
    color: #dc3545;
}

.status-indicator.checking i {
    color: #ffc107;
    animation: pulse 1.5s infinite;
}

/* Main Content */
.main {
    padding: 2rem 0;
    min-height: calc(100vh - 140px);
}

/* Hero Section */
.hero {
    text-align: center;
    margin-bottom: 3rem;
    color: white;
}

.hero h2 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* Cards */
.card {
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
    overflow: hidden;
}

.card-header {
    padding: 1.5rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-bottom: 1px solid #dee2e6;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #333;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-body {
    padding: 2rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #555;
}

.input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.input-group i {
    position: absolute;
    left: 1rem;
    color: #999;
    z-index: 2;
}

.input-group input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid #e9ecef;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

.input-group input:focus {
    outline: none;
    border-color: #667eea;
    background: white;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

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

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

.btn-success {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    color: white;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(40, 167, 69, 0.3);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.form-actions {
    text-align: center;
    margin-top: 2rem;
}

/* Loading */
.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

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

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: #667eea;
    display: block;
}

.stat-card .stat-label {
    font-size: 0.9rem;
    color: #666;
    margin-top: 0.5rem;
}

/* Tabs */
.results-tabs {
    margin-top: 2rem;
}

.tab-buttons {
    display: flex;
    border-bottom: 2px solid #e9ecef;
    margin-bottom: 1.5rem;
    gap: 0.5rem;
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    background: none;
    color: #666;
    font-weight: 500;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
}

.tab-btn.active {
    color: #667eea;
    border-bottom-color: #667eea;
}

.tab-btn:hover {
    color: #667eea;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

/* Overview Content */
.overview-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.overview-item .label {
    font-weight: 500;
    color: #555;
}

.overview-item .value {
    color: #333;
    font-weight: 600;
}

/* Links List */
.link-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.link-item i {
    color: #667eea;
}

.link-item a {
    color: #333;
    text-decoration: none;
    flex: 1;
    word-break: break-all;
}

.link-item a:hover {
    color: #667eea;
}

/* Images Grid */
.images-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.image-item {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 1rem;
    text-align: center;
}

.image-item img {
    max-width: 100%;
    height: 120px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.image-item .image-url {
    font-size: 0.8rem;
    color: #666;
    word-break: break-all;
}

/* JSON Output */
.json-output {
    background: #2d3748;
    color: #e2e8f0;
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Error Card */
.error-card {
    border-left: 4px solid #dc3545;
}

.error-card .card-body {
    text-align: center;
}

.error-card i {
    font-size: 3rem;
    color: #dc3545;
    margin-bottom: 1rem;
}

.error-card h3 {
    color: #dc3545;
    margin-bottom: 1rem;
}

/* Footer */
.footer {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding: 1rem 0;
    text-align: center;
    color: #666;
}

/* Utilities */
.text-center {
    text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h2 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .card-body {
        padding: 1.5rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .tab-buttons {
        flex-wrap: wrap;
    }
    
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
}