/**
 * Paid Keyword Finder - Modern CSS Styles
 * Responsive, mobile-friendly design with elegant UI
 */

/* Main Container */
.pkf-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 30px 20px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border: 1px solid #e1e5e9;
}

/* Header Section */
.pkf-header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #e1e5e9;
}

.pkf-header h2 {
    color: #2c3e50;
    margin: 0 0 10px 0;
    font-size: 28px;
    font-weight: 700;
}

.pkf-header h2 i {
    color: #3498db;
    margin-right: 10px;
}

.pkf-header p {
    color: #7f8c8d;
    margin: 0;
    font-size: 16px;
    line-height: 1.5;
}

/* Input Section */
.pkf-input-section {
    margin-bottom: 30px;
}

.pkf-input-group {
    display: flex;
    gap: 10px;
    max-width: 600px;
    margin: 0 auto;
}

.pkf-input {
    flex: 1;
    padding: 15px 20px;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: #ffffff;
}

.pkf-input:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.pkf-button {
    padding: 15px 25px;
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.pkf-button:hover {
    background: linear-gradient(135deg, #2980b9, #3498db);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

.pkf-button:active {
    transform: translateY(0);
}

/* Loading Animation */
.pkf-loading {
    text-align: center;
    padding: 40px 20px;
}

.pkf-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #3498db;
    border-radius: 50%;
    animation: pkf-spin 1s linear infinite;
    margin: 0 auto 20px;
}

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

.pkf-loading p {
    color: #7f8c8d;
    margin: 0;
    font-size: 16px;
}

/* Results Section */
.pkf-results-section {
    animation: pkf-fadeIn 0.5s ease-in;
}

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

.pkf-results-section h3 {
    color: #2c3e50;
    margin: 0 0 20px 0;
    font-size: 22px;
    font-weight: 600;
}

.pkf-results-section h3 i {
    color: #27ae60;
    margin-right: 10px;
}

/* Results Grid */
.pkf-results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

/* Keyword Cards */
.pkf-keyword-card {
    background: #ffffff;
    border: 1px solid #e1e5e9;
    border-radius: 10px;
    padding: 20px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.pkf-keyword-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, #3498db, #27ae60);
}

.pkf-keyword-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    border-color: #3498db;
}

.pkf-keyword-name {
    font-size: 18px;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 15px;
    line-height: 1.4;
}

.pkf-keyword-name i {
    color: #3498db;
    margin-right: 8px;
}

/* Keyword Stats */
.pkf-keyword-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-bottom: 15px;
}

.pkf-stat {
    text-align: center;
}

.pkf-stat-label {
    display: block;
    font-size: 12px;
    color: #7f8c8d;
    text-transform: uppercase;
    font-weight: 600;
    margin-bottom: 4px;
    letter-spacing: 0.5px;
}

.pkf-stat-value {
    display: block;
    font-size: 16px;
    font-weight: 700;
    color: #2c3e50;
}

.pkf-cpc {
    color: #27ae60 !important;
}

/* Profit Indicator */
.pkf-profit-indicator {
    padding: 10px 15px;
    background: #f8f9fa;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    border-left: 4px solid #e9ecef;
}

.pkf-potential.high {
    color: #27ae60;
    border-left-color: #27ae60;
}

.pkf-potential.medium {
    color: #f39c12;
    border-left-color: #f39c12;
}

.pkf-potential.low {
    color: #e74c3c;
    border-left-color: #e74c3c;
}

/* Responsive Design */
@media (max-width: 768px) {
    .pkf-container {
        padding: 20px 15px;
        margin: 10px;
    }
    
    .pkf-header h2 {
        font-size: 24px;
    }
    
    .pkf-input-group {
        flex-direction: column;
    }
    
    .pkf-button {
        width: 100%;
    }
    
    .pkf-results-grid {
        grid-template-columns: 1fr;
    }
    
    .pkf-keyword-stats {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .pkf-stat {
        text-align: left;
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 8px 0;
        border-bottom: 1px solid #f1f1f1;
    }
    
    .pkf-stat:last-child {
        border-bottom: none;
    }
    
    .pkf-stat-label {
        margin-bottom: 0;
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .pkf-container {
        padding: 15px 10px;
    }
    
    .pkf-header h2 {
        font-size: 20px;
    }
    
    .pkf-header p {
        font-size: 14px;
    }
    
    .pkf-input {
        padding: 12px 15px;
        font-size: 14px;
    }
    
    .pkf-button {
        padding: 12px 20px;
        font-size: 14px;
    }
}

/* Accessibility Improvements */
.pkf-button:focus,
.pkf-input:focus {
    outline: 2px solid #3498db;
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .pkf-container {
        border: 2px solid #000000;
    }
    
    .pkf-keyword-card {
        border: 2px solid #000000;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .pkf-keyword-card,
    .pkf-button {
        transition: none;
    }
    
    .pkf-spinner {
        animation: none;
        border-top-color: transparent;
    }
}