/* Mobile First Responsive Design */

/* Small Mobile Devices (320px - 480px) */
@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    /* Header */
    .header {
        padding: 15px 0;
    }
    
    .logo-icon {
        font-size: 1.8rem;
    }
    
    .logo-text {
        font-size: 1.3rem;
    }
    
    /* Hero Section */
    .hero {
        padding: 50px 0;
    }
    
    .hero-title {
        font-size: 2rem;
        margin-bottom: 15px;
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: 0.9rem;
        margin-bottom: 30px;
        color: #b3b3b3;
    }
    
    .profit-chart {
        padding: 25px 20px;
    }
    
    .chart-title {
        font-size: 1rem;
        margin-bottom: 20px;
    }
    
    .chart-visual {
        height: 80px;
        margin: 20px 0;
    }
    
    .point {
        padding: 6px 12px;
        font-size: 0.7rem;
        border-radius: 12px;
    }
    
    .chart-period {
        font-size: 0.75rem;
        margin-top: 15px;
    }
    
    /* Earnings Section - 重点优化手机端字体 */
    .earnings-section {
        padding: 50px 0;
    }
    
    .section-title {
        font-size: 1.8rem;
        margin-bottom: 35px;
    }
    
    .earnings-grid {
        gap: 20px;
        margin-top: 25px;
    }
    
    .earning-card {
        padding: 25px 20px;
        border-radius: 15px;
    }
    
    .earning-card.featured {
        transform: scale(1);
    }
    
    .featured-badge {
        font-size: 0.65rem;
        padding: 4px 15px;
        top: -8px;
    }
    
    .card-icon {
        font-size: 2rem;
        margin-bottom: 15px;
    }
    
    .earning-card h3 {
        font-size: 1rem;
        margin-bottom: 15px;
    }
    
    .earning-amount {
        font-size: 1.6rem;
        margin-bottom: 8px;
    }
    
    .earning-period {
        font-size: 0.75rem;
        margin-bottom: 20px;
    }
    
    .earning-features li {
        padding: 5px 0;
        font-size: 0.75rem;
        padding-left: 20px;
    }
    
    /* Success Section */
    .success-section {
        padding: 50px 0;
    }
    
    .section-subtitle {
        font-size: 0.9rem;
        margin-bottom: 40px;
    }
    
    .success-stats {
        gap: 25px;
        margin-bottom: 50px;
    }
    
    .stat-item {
        padding: 25px 20px;
        border-radius: 15px;
    }
    
    .stat-icon {
        font-size: 2rem;
        margin-bottom: 10px;
    }
    
    .stat-number {
        font-size: 2rem;
        margin-bottom: 10px;
    }
    
    .stat-label {
        font-size: 0.9rem;
        margin-bottom: 8px;
    }
    
    .stat-detail {
        font-size: 0.7rem;
    }
    
    /* Performance Chart */
    .performance-chart {
        padding: 25px 20px;
        border-radius: 15px;
    }
    
    .chart-title {
        font-size: 1rem;
        margin-bottom: 20px;
    }
    
    .chart-container {
        height: 150px;
        gap: 8px;
    }
    
    .month {
        font-size: 0.65rem;
        margin-top: 8px;
    }
    
    .profit {
        font-size: 0.55rem;
        top: -20px;
    }
    
    /* Method Section */
    .method-section {
        padding: 50px 0;
    }
    
    .method-grid {
        gap: 25px;
        margin-top: 40px;
    }
    
    .method-card {
        padding: 25px 20px;
        border-radius: 15px;
    }
    
    .method-number {
        width: 30px;
        height: 30px;
        font-size: 0.8rem;
        margin-bottom: 15px;
    }
    
    .method-card h3 {
        font-size: 1rem;
        margin-bottom: 12px;
    }
    
    .method-card p {
        font-size: 0.75rem;
        margin-bottom: 20px;
        line-height: 1.5;
    }
    
    .method-visual {
        height: 40px;
    }
    
    .buy-signal, .sell-signal {
        padding: 3px 6px;
        font-size: 0.55rem;
        border-radius: 8px;
    }
    
    .meter-label {
        font-size: 0.65rem;
        top: 20px;
    }
    
    .risk-low {
        font-size: 0.65rem;
    }
    
    /* CTA Section */
    .cta-section {
        padding: 60px 0;
    }
    
    .cta-title {
        font-size: 1.8rem;
        margin-bottom: 20px;
    }
    
    .cta-text {
        font-size: 0.9rem;
        margin-bottom: 30px;
    }
    
    .cta-benefits {
        margin: 30px 0 40px 0;
        gap: 15px;
    }
    
    .benefit {
        padding: 12px 16px;
        font-size: 0.75rem;
        border-radius: 20px;
    }
    
    .whatsapp-btn {
        padding: 18px 35px;
        font-size: 1rem;
        gap: 12px;
        margin: 25px 0;
    }
    
    .whatsapp-icon {
        font-size: 1.2rem;
    }
    
    .btn-arrow {
        font-size: 1rem;
    }
    
    .urgency-text {
        font-size: 0.85rem;
        margin-top: 25px;
    }
    
    /* Footer */
    .footer {
        padding: 30px 0;
    }
    
    .disclaimer {
        font-size: 0.75rem;
        margin-bottom: 15px;
        line-height: 1.5;
    }
    
    .copyright {
        font-size: 0.7rem;
    }
}

/* Medium Mobile Devices (480px - 768px) */
@media (min-width: 481px) and (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    
    /* Hero Section */
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    /* Section Titles */
    .section-title {
        font-size: 2.2rem;
    }
    
    /* Earnings Cards */
    .earning-card {
        padding: 30px 25px;
    }
    
    .earning-card h3 {
        font-size: 1.1rem;
    }
    
    .earning-amount {
        font-size: 1.8rem;
    }
    
    .earning-period {
        font-size: 0.8rem;
    }
    
    .earning-features li {
        font-size: 0.8rem;
    }
    
    /* Stats */
    .stat-number {
        font-size: 2.5rem;
    }
    
    .stat-label {
        font-size: 1rem;
    }
    
    .stat-detail {
        font-size: 0.75rem;
    }
    
    /* Method Cards */
    .method-card p {
        font-size: 0.8rem;
    }
    
    /* CTA */
    .cta-title {
        font-size: 2.2rem;
    }
    
    .cta-text {
        font-size: 1rem;
    }
    
    .benefit {
        font-size: 0.8rem;
    }
}

/* Tablet Devices (768px - 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        padding: 0 30px;
    }
    
    /* Grids */
    .earnings-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .success-stats {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .method-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Adjust for medium screens */
    .hero-title {
        font-size: 3rem;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .cta-title {
        font-size: 2.5rem;
    }
}

/* Large Screens (1024px+) */
@media (min-width: 1025px) {
    .container {
        max-width: 1200px;
        padding: 0 40px;
    }
    
    /* Full desktop layout */
    .earnings-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .method-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .success-stats {
        grid-template-columns: repeat(3, 1fr);
    }
    
    /* Larger text for desktop */
    .hero-title {
        font-size: 3.5rem;
    }
    
    .section-title {
        font-size: 3rem;
    }
    
    .cta-title {
        font-size: 3.2rem;
    }
}

/* Ultra-wide screens (1440px+) */
@media (min-width: 1441px) {
    .container {
        max-width: 1400px;
    }
    
    /* Even larger spacing for ultra-wide */
    .hero {
        padding: 100px 0;
    }
    
    .earnings-section,
    .success-section,
    .method-section {
        padding: 100px 0;
    }
    
    .cta-section {
        padding: 120px 0;
    }
}

/* High DPI / Retina Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    /* Optimize for retina displays */
    .profit-line,
    .chart-line {
        height: 4px;
    }
    
    .bar {
        border-radius: 10px 10px 0 0;
    }
}

/* Landscape Mobile Orientation */
@media (max-width: 768px) and (orientation: landscape) {
    .hero {
        padding: 40px 0;
    }
    
    .earnings-section,
    .success-section,
    .method-section {
        padding: 40px 0;
    }
    
    .cta-section {
        padding: 50px 0;
    }
    
    .hero-title {
        font-size: 1.8rem;
        margin-bottom: 10px;
    }
    
    .section-title {
        font-size: 1.6rem;
        margin-bottom: 25px;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    /* Remove hover effects on touch devices */
    .earning-card:hover,
    .stat-item:hover,
    .method-card:hover {
        transform: none;
        box-shadow: none;
    }
    
    /* Increase touch targets */
    .whatsapp-btn {
        min-height: 48px;
        padding: 20px 40px;
    }
    
    /* Better touch feedback */
    .whatsapp-btn:active {
        transform: scale(0.98);
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    /* Already optimized for dark theme */
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print styles */
@media print {
    .header,
    .footer,
    .whatsapp-btn {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .section-title,
    .hero-title {
        color: black;
    }
}