/* UTM Builder CSS */

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

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

/* Navigation */
.navigation {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 1.5rem 2rem;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.nav-brand h1 {
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
}

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

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.hero-subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Builder Container */
.builder-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

/* Form Section */
.form-section, .preview-section {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #333;
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #333;
}

.label-text {
    color: #333;
}

.required {
    color: #e53e3e;
    margin-left: 0.25rem;
}

input[type="url"],
input[type="text"] {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s;
    font-family: inherit;
}

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

.helper-text {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: #718096;
}

/* Preview Section */
.preview-card {
    background: #f7fafc;
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.preview-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: #4a5568;
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.preview-url {
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: 0.875rem;
    color: #2d3748;
    word-break: break-all;
    line-height: 1.6;
    padding: 1rem;
    background: white;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
}

/* Buttons */
.btn-copy {
    width: 100%;
    padding: 0.875rem 1.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-copy:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(102, 126, 234, 0.3);
}

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

/* Responsive */
@media (max-width: 768px) {
    .builder-container {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 2rem;
    }
}