:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #ec4899;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --bg: #f8fafc;
    --bg-dark: #0f172a;
    --card-bg: #ffffff;
    --text: #0f172a;
    --text-light: #64748b;
    --border: #e2e8f0;
}

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

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

.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.auth-card {
    background: var(--card-bg);
    border-radius: 1rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 3rem;
    width: 100%;
    max-width: 480px;
}

.logo {
    text-align: center;
    margin-bottom: 2rem;
}

.logo h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    background: var(--bg);
    padding: 0.25rem;
    border-radius: 0.5rem;
}

.tab {
    flex: 1;
    padding: 0.75rem;
    border: none;
    background: transparent;
    border-radius: 0.375rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-light);
    transition: all 0.2s;
}

.tab.active {
    background: var(--card-bg);
    color: var(--primary);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text);
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid var(--border);
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: all 0.2s;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.btn {
    width: 100%;
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

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

.btn-secondary:hover {
    background: #db2777;
    transform: translateY(-1px);
}

.navbar {
    background: var(--card-bg);
    padding: 1rem 2rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: bold;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.nav-link {
    padding: 0.5rem 1rem;
    text-decoration: none;
    color: var(--text-light);
    font-weight: 500;
    border-radius: 0.375rem;
    transition: all 0.2s;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.container h1 {
    font-size: 2rem;
    margin-bottom: 2rem;
}

.card {
    background: var(--card-bg);
    border-radius: 0.75rem;
    padding: 2rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

.card h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: linear-gradient(135deg, var(--primary), #818cf8);
    color: white;
    padding: 2rem;
    border-radius: 0.75rem;
    text-align: center;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.95rem;
    opacity: 0.9;
}

table {
    width: 100%;
    border-collapse: collapse;
    table-layout: auto;
}

.table-wrapper {
    overflow-x: auto;
    width: 100%;
    -webkit-overflow-scrolling: touch;
}

thead {
    background: var(--bg);
}

th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text);
}

td {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    word-break: break-word;
    max-width: 300px;
}

td:first-child {
    max-width: 50px;
    text-align: center;
}

td:nth-child(2) {
    max-width: 150px;
}

td:nth-child(3) {
    max-width: 500px;
}

td:nth-child(4) {
    max-width: 120px;
    text-align: center;
}

.url-cell {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.url-cell a {
    flex: 1;
    min-width: 0;
    word-break: break-all;
}

.text-toggle-icon {
    background: transparent;
    border: none;
    color: var(--primary);
    cursor: pointer;
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    transition: all 0.2s;
    flex-shrink: 0;
}

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

td:nth-child(5) {
    max-width: 200px;
}

.llm-text {
    margin-top: 0.75rem;
    padding: 0.875rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--text);
    white-space: pre-wrap;
    word-break: break-word;
    max-height: 400px;
    overflow-y: auto;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.empty-state {
    text-align: center;
    color: var(--text-light);
    padding: 3rem 1rem !important;
}

.status-message {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: 0.5rem;
    font-size: 0.9rem;
    display: none;
}

.status-message.show {
    display: block;
}

.status-message.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border: 1px solid var(--success);
}

.status-message.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    border: 1px solid var(--danger);
}

.checkbox-group {
    display: flex;
    gap: 1.5rem;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    cursor: pointer;
}

#chart {
    min-height: 400px;
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .navbar {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-menu {
        flex-direction: column;
        width: 100%;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
}