:root {
    /* Simple color palette */
    --color-primary: #3b82f6;
    --color-primary-light: #60a5fa;
    --color-primary-dark: #2563eb;
    
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    
    --color-bg: #f8fafc;
    --color-card: #ffffff;
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-border: #e5e7eb;
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    --border-radius: 12px;
    --border-radius-sm: 8px;
    
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: var(--font-family);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    font-size: 16px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* Simple Header */
.simple-header {
    background: var(--color-card);
    border-bottom: 1px solid var(--color-border);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    font-size: 32px;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary), #8b5cf6);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.logo h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text);
}

.tagline {
    color: var(--color-text-light);
    font-size: 14px;
    margin-top: 4px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.auto-refresh {
    display: flex;
    align-items: center;
    gap: 12px;
}

.auto-refresh-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--color-text-light);
}

.last-updated {
    font-size: 14px;
    color: var(--color-text-light);
    background: var(--color-bg);
    padding: 6px 12px;
    border-radius: 20px;
}

/* Simple Navigation */
.simple-nav {
    background: var(--color-card);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.simple-nav::-webkit-scrollbar {
    display: none;
}

.nav-content {
    display: flex;
    gap: 8px;
    padding-bottom: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--color-bg);
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    color: var(--color-text);
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    border: 1px solid transparent;
    transition: all 0.2s ease;
}

.nav-item:hover {
    background: #e5e7eb;
}

.nav-item.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.nav-item.active .chain-dot {
    border-color: white;
}

.chain-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    border: 2px solid transparent;
}

/* Simple Main Content */
.simple-main {
    padding: 30px 0 60px;
}

.simple-section {
    margin-bottom: 40px;
}

.section-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--color-text);
}

.section-title i {
    width: 24px;
    height: 24px;
}

/* Best Deal Section */
.best-deal-card {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-radius: var(--border-radius);
    padding: 30px;
    color: white;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    flex-wrap: wrap;
}

.best-deal-content {
    flex: 1;
    min-width: 300px;
}

.best-deal-label {
    font-size: 14px;
    opacity: 0.9;
    margin-bottom: 8px;
}

.best-deal-network {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
}

.best-deal-price {
    display: flex;
    align-items: baseline;
    gap: 16px;
    margin-bottom: 8px;
}

.best-deal-price .gwei {
    font-size: 40px;
    font-weight: 800;
}

.best-deal-price .usd {
    font-size: 24px;
    opacity: 0.9;
}

.best-deal-note {
    font-size: 14px;
    opacity: 0.8;
}

.best-deal-action {
    flex-shrink: 0;
}

/* Simple Buttons */
.simple-btn {
    padding: 14px 28px;
    border-radius: var(--border-radius-sm);
    border: none;
    font-family: var(--font-family);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-decoration: none;
}

.simple-btn.primary {
    background: white;
    color: var(--color-primary);
}

.simple-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 255, 255, 0.2);
}

.simple-btn.secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.simple-btn.secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Price Cards Grid */
.price-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.price-card {
    background: var(--color-card);
    border-radius: var(--border-radius);
    padding: 24px;
    border: 1px solid var(--color-border);
    transition: all 0.2s ease;
    position: relative;
}

.price-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.price-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.price-card-chain {
    display: flex;
    align-items: center;
    gap: 12px;
}

.chain-logo {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 20px;
    color: white;
}

.chain-info {
    flex: 1;
}

.chain-name {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 4px;
}

.chain-token {
    font-size: 14px;
    color: var(--color-text-light);
}

.price-status {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.price-status.cheap {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
}

.price-status.average {
    background: rgba(245, 158, 11, 0.1);
    color: var(--color-warning);
}

.price-status.expensive {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-danger);
}

.price-card-prices {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 20px;
}

.price-tier {
    background: var(--color-bg);
    border-radius: var(--border-radius-sm);
    padding: 16px;
    text-align: center;
}

.tier-label {
    font-size: 12px;
    color: var(--color-text-light);
    margin-bottom: 8px;
    text-transform: uppercase;
    font-weight: 600;
}

.tier-price {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 4px;
}

.tier-usd {
    font-size: 12px;
    color: var(--color-text-light);
}

.price-card-action {
    margin-top: 20px;
}

.price-card-action .simple-btn {
    width: 100%;
    justify-content: center;
}

/* Comparison Section */
.comparison-section {
    background: var(--color-card);
    border-radius: var(--border-radius);
    padding: 30px;
    border: 1px solid var(--color-border);
}

.comparison-bars {
    display: flex;
    align-items: flex-end;
    gap: 20px;
    height: 200px;
    padding: 0 20px;
    margin-bottom: 40px;
}

.comparison-bar {
    flex: 1;
    min-width: 60px;
    border-radius: 8px 8px 0 0;
    position: relative;
    transition: all 0.3s ease;
}

.comparison-bar:hover {
    transform: scale(1.05);
}

.comparison-bar-label {
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 14px;
    font-weight: 600;
    white-space: nowrap;
}

.comparison-bar-price {
    position: absolute;
    top: -35px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 16px;
    font-weight: 700;
    color: var(--color-text);
}

.comparison-legend {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--color-text-light);
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: 4px;
}

/* Tips Section */
.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.tip-card {
    background: var(--color-card);
    border-radius: var(--border-radius);
    padding: 24px;
    border: 1px solid var(--color-border);
    transition: all 0.2s ease;
}

.tip-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.tip-icon {
    font-size: 32px;
    margin-bottom: 16px;
}

.tip-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text);
}

.tip-card p {
    font-size: 15px;
    color: var(--color-text-light);
    line-height: 1.6;
}

/* FAQ Section */
.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.faq-item {
    background: var(--color-card);
    border-radius: var(--border-radius);
    padding: 24px;
    border: 1px solid var(--color-border);
}

.faq-item h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text);
}

.faq-item p {
    font-size: 15px;
    color: var(--color-text-light);
    line-height: 1.6;
}

/* Simple Footer */
.simple-footer {
    background: var(--color-card);
    border-top: 1px solid var(--color-border);
    padding: 40px 0;
    text-align: center;
}

.footer-notice {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--color-bg);
    padding: 12px 24px;
    border-radius: 30px;
    margin-bottom: 24px;
    font-size: 14px;
    color: var(--color-text-light);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.footer-links a {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text-light);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: var(--color-primary);
}

.footer-copyright {
    font-size: 14px;
    color: var(--color-text-light);
    opacity: 0.7;
}

/* Simple Notification */
.simple-notification {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--color-primary);
    color: white;
    padding: 16px 24px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    display: none;
    align-items: center;
    gap: 12px;
    z-index: 1000;
    animation: slideIn 0.3s ease;
}

.simple-notification.show {
    display: flex;
}

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

/* Mobile Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .best-deal-card {
        flex-direction: column;
        text-align: center;
        gap: 24px;
    }
    
    .best-deal-content {
        min-width: 100%;
    }
    
    .best-deal-price {
        justify-content: center;
    }
    
    .price-cards-grid {
        grid-template-columns: 1fr;
    }
    
    .comparison-bars {
        flex-direction: column;
        height: auto;
        gap: 30px;
    }
    
    .comparison-bar {
        height: 40px !important;
        width: 100%;
        min-height: 40px;
    }
    
    .comparison-bar-label {
        position: static;
        transform: none;
        margin-bottom: 8px;
        text-align: center;
    }
    
    .comparison-bar-price {
        position: static;
        transform: none;
        margin-top: 8px;
        text-align: center;
    }
    
    .tips-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 16px;
    }
    
    .simple-notification {
        left: 20px;
        right: 20px;
        bottom: 20px;
    }
}

@media (max-width: 480px) {
    .logo {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .logo-icon {
        width: 40px;
        height: 40px;
        font-size: 24px;
    }
    
    .logo h1 {
        font-size: 20px;
    }
    
    .nav-content {
        gap: 4px;
    }
    
    .nav-item {
        padding: 8px 12px;
        font-size: 12px;
    }
    
    .best-deal-price .gwei {
        font-size: 32px;
    }
    
    .best-deal-price .usd {
        font-size: 20px;
    }
    
    .simple-btn {
        padding: 12px 20px;
        font-size: 14px;
    }
}