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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

.login-box {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
}

.login-box h1 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    text-align: center;
}

.login-box h2 {
    color: #7f8c8d;
    margin-bottom: 2rem;
    text-align: center;
    font-weight: 300;
}

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

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: white;
    padding: 1.5rem 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.header h1 {
    color: #2c3e50;
    font-size: 1.8rem;
}

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

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    text-align: center;
}

.stat-card h3 {
    color: #7f8c8d;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    color: #2c3e50;
}

.form-section, .links-section {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.form-section h2, .links-section h2 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #ecf0f1;
}

.form-row {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #2c3e50;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #ecf0f1;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #3498db;
}

.btn-primary, .btn-secondary {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    transition: all 0.3s ease;
}

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

.btn-primary:hover {
    background: #2980b9;
    transform: translateY(-1px);
}

.btn-secondary {
    background: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background: #7f8c8d;
}

.table-container {
    overflow-x: auto;
}

.links-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.links-table th,
.links-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #ecf0f1;
}

.links-table th {
    background: #f8f9fa;
    font-weight: 600;
    color: #2c3e50;
}

.links-table tr:hover {
    background: #f8f9fa;
}

.short-link {
    font-family: 'Monaco', 'Menlo', monospace;
    background: #e8f4fd;
    padding: 0.25rem 0.5rem;
    border-radius: 3px;
    color: #2980b9;
    text-decoration: none;
    font-weight: bold;
}

.short-link:hover {
    background: #d4edda;
}

.url-cell {
    max-width: 200px;
    word-break: break-all;
}

.number {
    text-align: right;
    font-weight: 600;
}

.success-message, .error-message {
    padding: 1rem;
    border-radius: 5px;
    margin-bottom: 1rem;
}

.success-message {
    background: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
}

.success-message a {
    color: #155724;
    font-weight: bold;
}

.error-message {
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
}

.no-data {
    text-align: center;
    color: #7f8c8d;
    font-style: italic;
    padding: 2rem;
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
}