/* Live Keyword Analyzer - Modern CSS Styles */
.lka-container {
    max-width: 600px;
    margin: 2rem auto;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    border: 1px solid #e1e5e9;
}

/* Header Styles */
.lka-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2.5rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.lka-header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 1%, transparent 1%);
    background-size: 20px 20px;
    transform: rotate(30deg);
}

.lka-header i {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
    opacity: 0.9;
}

.lka-header h3 {
    margin: 0 0 0.5rem 0;
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.lka-header p {
    margin: 0;
    opacity: 0.9;
    font-size: 1rem;
    font-weight: 400;
}

/* Input Group Styles */
.lka-input-group {
    padding: 2rem;
    position: relative;
    background: #f8fafc;
}

.lka-input-group label {
    display: block;
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: #374151;
    font-size: 0.95rem;
}

.lka-input-group label i {
    margin-right: 0.5rem;
    color: #667eea;
}

.lka-input-group input {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid #e1e5e9;
    border-radius: 12px;
    font-size: 1rem;
    background: white;
    transition: all 0.3s ease;
    box-sizing: border-box;
    font-weight: 500;
}

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

.lka-input-group input::placeholder {
    color: #9ca3af;
    font-weight: 400;
}

.lka-input-border {
    position: absolute;
    bottom: 2rem;
    left: 2rem;
    width: calc(100% - 4rem);
    height: 2px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.lka-input-group.focused .lka-input-border {
    transform: scaleX(1);
}

/* Results Container */
.lka-results {
    padding: 0 2rem 2rem;
}

/* Welcome Message */
.lka-welcome-message {
    text-align: center;
    padding: 3rem 2rem;
    color: #6b7280;
}

.lka-welcome-message i {
    font-size: 3rem;
    color: #d1d5db;
    margin-bottom: 1rem;
    display: block;
}

.lka-welcome-message h4 {
    margin: 0 0 0.5rem 0;
    color: #374151;
    font-weight: 600;
}

.lka-welcome-message p {
    margin: 0;
    font-size: 0.95rem;
}

/* Analysis Results */
.lka-analysis-results {
    animation: fadeInUp 0.6s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Metric Cards */
.lka-metric-card {
    background: white;
    border: 1px solid #f1f5f9;
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1.25rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.lka-metric-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.lka-metric-header {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.lka-metric-header i {
    font-size: 1.25rem;
    margin-right: 0.75rem;
    color: #667eea;
}

.lka-metric-header span {
    font-weight: 600;
    color: #374151;
    font-size: 0.95rem;
}

.lka-metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1f2937;
}

/* Strength Container */
.lka-strength-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.lka-strength-badge {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    color: white;
    font-weight: 600;
    font-size: 0.85rem;
    min-width: 80px;
    text-align: center;
    transition: all 0.3s ease;
}

.lka-strength-bar {
    flex: 1;
    height: 8px;
    background: #f1f5f9;
    border-radius: 10px;
    overflow: hidden;
}

.lka-strength-fill {
    height: 100%;
    border-radius: 10px;
    transition: all 0.5s ease;
}

/* SEO Container */
.lka-seo-container {
    text-align: center;
}

.lka-seo-score {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.lka-seo-bar {
    height: 10px;
    background: #f1f5f9;
    border-radius: 10px;
    margin: 1rem 0;
    overflow: hidden;
}

.lka-seo-fill {
    height: 100%;
    background: linear-gradient(90deg, #ef4444, #f59e0b, #3b82f6, #10b981);
    border-radius: 10px;
    transition: width 0.8s ease;
    position: relative;
}

.lka-seo-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255,255,255,0.4) 50%, 
        transparent 100%);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.lka-seo-label {
    font-size: 0.9rem;
    color: #6b7280;
    font-weight: 500;
}

/* Tips Section */
.lka-tips {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border: 1px solid #bae6fd;
    border-radius: 16px;
    padding: 1.5rem;
    margin-top: 1rem;
}

.lka-tips-header {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.lka-tips-header i {
    font-size: 1.25rem;
    margin-right: 0.75rem;
    color: #0ea5e9;
}

.lka-tips-header span {
    font-weight: 600;
    color: #0369a1;
}

.lka-tips-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.lka-tips-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid #bae6fd;
    display: flex;
    align-items: flex-start;
    font-size: 0.9rem;
    color: #075985;
}

.lka-tips-list li:last-child {
    border-bottom: none;
}

.lka-tips-list li i {
    margin-right: 0.75rem;
    color: #0ea5e9;
    margin-top: 0.1rem;
    flex-shrink: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .lka-container {
        margin: 1rem;
        border-radius: 16px;
    }
    
    .lka-header {
        padding: 2rem 1.5rem;
    }
    
    .lka-header h3 {
        font-size: 1.5rem;
    }
    
    .lka-input-group,
    .lka-results {
        padding: 1.5rem;
    }
    
    .lka-strength-container {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    
    .lka-strength-badge {
        align-self: flex-start;
    }
    
    .lka-metric-card {
        padding: 1.25rem;
    }
    
    .lka-seo-score {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .lka-container {
        margin: 0.5rem;
        border-radius: 12px;
    }
    
    .lka-header {
        padding: 1.5rem 1rem;
    }
    
    .lka-input-group,
    .lka-results {
        padding: 1rem;
    }
    
    .lka-metric-card {
        padding: 1rem;
    }
}

/* Loading animation */
.lka-loading {
    opacity: 0.7;
    pointer-events: none;
}

.lka-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #667eea;
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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