/**
 * HTTP Cache Tracking Demo - Styles
 * 
 * Professional styling for the HTTP cache tracking demonstration page
 */

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

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

/* Header styles */
header {
    text-align: center;
    margin-bottom: 40px;
    background: rgba(255, 255, 255, 0.95);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

header h1 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 15px;
    font-weight: 700;
}

header p {
    font-size: 1.1rem;
    color: #7f8c8d;
    max-width: 600px;
    margin: 0 auto;
}

/* Main content */
main {
    display: grid;
    gap: 30px;
    grid-template-columns: 1fr;
}

/* Tracking section */
.tracking-section {
    background: rgba(255, 255, 255, 0.95);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.tracking-section h2 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.8rem;
    font-weight: 600;
}

.tracking-id-display {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    padding: 25px;
    border-radius: 10px;
    margin-bottom: 25px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

.tracking-id-value {
    font-size: 1.5rem;
    font-weight: bold;
    font-family: 'Courier New', monospace;
    margin-bottom: 10px;
    word-break: break-all;
}

.tracking-id-meta {
    opacity: 0.9;
    font-size: 0.9rem;
}

.loading {
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.tracking-info {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid #3498db;
}

.tracking-info p {
    font-weight: 600;
    margin-bottom: 15px;
    color: #2c3e50;
}

.tracking-info ul {
    list-style: none;
    padding-left: 0;
}

.tracking-info li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    color: #555;
}

.tracking-info li:before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 15px;
    height: 15px;
    border-radius: 50%;
}

.tracking-info li:nth-child(1):before {
    background: #27ae60;
}

.tracking-info li:nth-child(2):before,
.tracking-info li:nth-child(3):before {
    background: #e74c3c;
}

/* Test section */
.test-section {
    background: rgba(255, 255, 255, 0.95);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.test-section h3 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.5rem;
    font-weight: 600;
}

.test-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

/* Button styles */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    min-width: 150px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2980b9, #1f5f8b);
}

.btn-secondary {
    background: linear-gradient(135deg, #95a5a6, #7f8c8d);
    color: white;
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #7f8c8d, #6c7b7d);
}

.btn-info {
    background: linear-gradient(135deg, #f39c12, #e67e22);
    color: white;
}

.btn-info:hover {
    background: linear-gradient(135deg, #e67e22, #d35400);
}

/* Instructions */
.instructions {
    background: rgba(255, 255, 255, 0.95);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    margin-top: 20px;
}

.instructions h3 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.5rem;
    font-weight: 600;
}

.browser-instructions {
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.browser {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid #f39c12;
}

.browser h4 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 1.1rem;
    font-weight: 600;
}

.browser p {
    color: #555;
    font-family: 'Courier New', monospace;
    background: #e9ecef;
    padding: 10px;
    border-radius: 4px;
    font-size: 0.9rem;
}

/* Footer */
footer {
    text-align: center;
    margin-top: 40px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .test-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .browser-instructions {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    header {
        padding: 20px;
    }
    
    .tracking-section,
    .test-section,
    .instructions {
        padding: 20px;
    }
    
    .tracking-id-value {
        font-size: 1.2rem;
    }
}

/* Notification styles */
.notification {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Additional utility classes */
.text-center {
    text-align: center;
}

.mb-20 {
    margin-bottom: 20px;
}

.mt-20 {
    margin-top: 20px;
}

/* Accessibility improvements */
.btn:focus,
.btn:active {
    outline: 2px solid #3498db;
    outline-offset: 2px;
}

/* Print styles */
@media print {
    body {
        background: white;
    }
    
    .container {
        max-width: none;
        padding: 0;
    }
    
    .btn {
        display: none;
    }
}