/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    transition: all 0.3s ease;
}

/* Color Variables */
:root {
    /* Light Theme Colors - Softer whites */
    --light-bg: #fafbfc;
    --light-surface: #ffffff;
    --light-surface-alt: #f8fafc;
    --light-text: #1e293b;
    --light-text-secondary: #64748b;
    --light-border: #e2e8f0;
    --light-shadow: rgba(15, 23, 42, 0.08);
    
    /* Dark Theme Colors */
    --dark-bg: #0f172a;
    --dark-surface: #1e293b;
    --dark-surface-alt: #334155;
    --dark-text: #f1f5f9;
    --dark-text-secondary: #cbd5e1;
    --dark-border: #475569;
    --dark-shadow: rgba(0, 0, 0, 0.3);
    
    /* Brand Colors */
    --primary: #4f46e5;
    --primary-dark: #3730a3;
    --secondary: #06b6d4;
    --accent: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    
    /* Network Colors */
    --ethereum: #627eea;
    --tron: #ff060a;
    --bsc: #f3ba2f;
    --polygon: #8247e5;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary), var(--secondary));
    --gradient-success: linear-gradient(135deg, var(--accent), var(--secondary));
    --gradient-warm: linear-gradient(135deg, #f59e0b, #ef4444);
    --gradient-cool: linear-gradient(135deg, var(--secondary), var(--polygon));
}

/* Light Theme */
.light-theme {
    --bg: var(--light-bg);
    --surface: var(--light-surface);
    --surface-alt: var(--light-surface-alt);
    --text: var(--light-text);
    --text-secondary: var(--light-text-secondary);
    --border: var(--light-border);
    --shadow: var(--light-shadow);
}

/* Dark Theme */
.dark-theme {
    --bg: var(--dark-bg);
    --surface: var(--dark-surface);
    --surface-alt: var(--dark-surface-alt);
    --text: var(--dark-text);
    --text-secondary: var(--dark-text-secondary);
    --border: var(--dark-border);
    --shadow: var(--dark-shadow);
}

body {
    background: var(--bg);
    color: var(--text);
}

/* SVG Icon Styles */
svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

.brand-icon {
    width: 28px;
    height: 28px;
    color: var(--primary);
}

.network-icon {
    width: 20px;
    height: 20px;
}

.network-logo {
    width: 48px;
    height: 48px;
}

.trust-icon {
    width: 20px;
    height: 20px;
}

.btn-icon {
    width: 20px;
    height: 20px;
}

.badge-icon {
    width: 16px;
    height: 16px;
}

/* Network Color Classes */
.ethereum-color { color: var(--ethereum); }
.tron-color { color: var(--tron); }
.bsc-color { color: var(--bsc); }
.polygon-color { color: var(--polygon); }

/* Background Animation */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.floating-shapes {
    position: relative;
    width: 100%;
    height: 100%;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: var(--gradient-primary);
    opacity: 0.03;
    animation: float 20s infinite ease-in-out;
}

.shape-1 {
    width: 300px;
    height: 300px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 200px;
    height: 200px;
    top: 60%;
    right: 10%;
    animation-delay: 5s;
}

.shape-3 {
    width: 150px;
    height: 150px;
    bottom: 20%;
    left: 20%;
    animation-delay: 10s;
}

.shape-4 {
    width: 250px;
    height: 250px;
    top: 30%;
    right: 30%;
    animation-delay: 15s;
}

.shape-5 {
    width: 180px;
    height: 180px;
    bottom: 40%;
    right: 50%;
    animation-delay: 8s;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-20px) rotate(90deg); }
    50% { transform: translateY(-40px) rotate(180deg); }
    75% { transform: translateY(-20px) rotate(270deg); }
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-brand:hover {
    transform: scale(1.05);
}

.nav-center {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a:hover {
    color: var(--primary);
    transform: translateY(-2px);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Language Selector */
.language-selector {
    position: relative;
}

.language-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 0.5rem 1rem;
    color: var(--text);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.language-btn:hover {
    background: var(--surface-alt);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow);
}

.language-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 8px 32px var(--shadow);
    min-width: 150px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
    margin-top: 0.5rem;
}

.language-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-option {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    border-radius: 8px;
    margin: 0.25rem;
}

.language-option:hover {
    background: var(--surface-alt);
    transform: translateX(4px);
}

.language-option.active {
    background: var(--primary);
    color: white;
}

.flag {
    font-size: 1.2rem;
}

/* Theme Toggle */
.theme-toggle {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 60px;
    height: 32px;
    position: relative;
}

.theme-toggle:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px var(--shadow);
}

.theme-toggle-track {
    width: 100%;
    height: 100%;
    position: relative;
}

.theme-toggle-thumb {
    width: 24px;
    height: 24px;
    background: var(--gradient-primary);
    border-radius: 50%;
    position: absolute;
    top: 0;
    left: 0;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.7rem;
}

.light-theme .theme-toggle-thumb {
    transform: translateX(28px);
}

.sun-icon, .moon-icon {
    position: absolute;
    transition: all 0.3s ease;
}

.dark-theme .sun-icon {
    opacity: 0;
    transform: rotate(180deg);
}

.light-theme .moon-icon {
    opacity: 0;
    transform: rotate(-180deg);
}

/* Clickable Elements */
.clickable {
    cursor: pointer;
    transition: all 0.3s ease;
    user-select: none;
}

.clickable:hover {
    transform: translateY(-2px);
}

.clickable:active {
    transform: translateY(0);
}

/* Buttons */
.btn-primary, .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 2rem;
    border-radius: 16px;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 16px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(79, 70, 229, 0.4);
}

.btn-secondary {
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--surface-alt);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px var(--shadow);
}

.btn-large {
    padding: 1.25rem 3rem;
    font-size: 1.125rem;
    border-radius: 20px;
}

.interact-button {
    position: relative;
    overflow: hidden;
    animation: pulse 3s infinite;
}

.interact-button .btn-glow {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.interact-button:hover .btn-glow {
    left: 100%;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 4px 16px rgba(79, 70, 229, 0.3); }
    50% { box-shadow: 0 4px 24px rgba(79, 70, 229, 0.5); }
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 0 4rem;
    position: relative;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 50px;
    padding: 0.5rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    transition: all 0.3s ease;
}

.hero-badge:hover {
    background: var(--surface-alt);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px var(--shadow);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--text);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.stat {
    text-align: center;
    transition: all 0.3s ease;
}

.stat:hover {
    transform: translateY(-4px);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.trust-indicators {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all 0.3s ease;
}

.trust-item:hover {
    color: var(--primary);
    transform: translateY(-2px);
}

/* Hero Visual */
.hero-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.gas-station {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 2rem;
    box-shadow: 0 8px 32px var(--shadow);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.gas-station::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.gas-station:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 16px 48px var(--shadow);
}

.pump-display {
    background: var(--bg);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border);
}

.display-screen {
    text-align: center;
}

.price-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.currency {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.savings {
    font-size: 0.875rem;
    color: var(--accent);
    font-weight: 600;
    background: rgba(16, 185, 129, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    display: inline-block;
}

.pump-body {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.fuel-gauge {
    flex: 1;
    height: 8px;
    background: var(--surface-alt);
    border-radius: 4px;
    overflow: hidden;
}

.gauge-fill {
    height: 100%;
    background: var(--gradient-success);
    width: 75%;
    border-radius: 4px;
    animation: fillGauge 3s ease-in-out infinite;
}

@keyframes fillGauge {
    0%, 100% { width: 75%; }
    50% { width: 85%; }
}

.pump-nozzle {
    width: 40px;
    height: 20px;
    background: var(--surface-alt);
    border-radius: 10px;
    position: relative;
}

.pump-nozzle::after {
    content: '';
    position: absolute;
    right: -8px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 4px;
    background: var(--primary);
    border-radius: 2px;
}

.network-badges {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.network-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text);
    transition: all 0.3s ease;
    cursor: pointer;
}

.network-badge:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--shadow);
}

.network-badge.ethereum:hover {
    border-color: var(--ethereum);
    box-shadow: 0 8px 24px rgba(98, 126, 234, 0.3);
}

.network-badge.tron:hover {
    border-color: var(--tron);
    box-shadow: 0 8px 24px rgba(255, 6, 10, 0.3);
}

.network-badge.bsc:hover {
    border-color: var(--bsc);
    box-shadow: 0 8px 24px rgba(243, 186, 47, 0.3);
}

.network-badge.polygon:hover {
    border-color: var(--polygon);
    box-shadow: 0 8px 24px rgba(130, 71, 229, 0.3);
}

/* Section Styles */
section {
    padding: 6rem 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Gas Info Section */
.gas-info {
    background: var(--surface-alt);
}

.gas-explanation {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.gas-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.gas-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.gas-card:hover::before {
    transform: scaleX(1);
}

.gas-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px var(--shadow);
}

.gas-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
}

.gas-icon svg {
    width: 32px;
    height: 32px;
}

.gas-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 1rem;
}

.gas-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.gas-comparison {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 8px 32px var(--shadow);
}

.gas-comparison h3 {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 2rem;
}

.comparison-table {
    display: grid;
    gap: 1rem;
}

.comparison-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 1rem;
    align-items: center;
    padding: 1rem;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.comparison-row.header {
    background: var(--surface-alt);
    font-weight: 600;
    color: var(--text);
}

.comparison-row:not(.header) {
    background: var(--bg);
    border: 1px solid var(--border);
}

.comparison-row:not(.header):hover {
    background: var(--surface-alt);
    transform: translateX(8px);
    box-shadow: 0 4px 16px var(--shadow);
}

.network-name {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
}

.price-old {
    color: var(--danger);
    font-weight: 500;
}

.price-new {
    color: var(--accent);
    font-weight: 600;
}

.savings-percent {
    color: var(--accent);
    font-weight: 700;
    font-size: 1.125rem;
}

/* Networks Section */
.networks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.network-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.network-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.network-card:hover::before {
    transform: scaleX(1);
}

.network-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px var(--shadow);
}

.network-card.ethereum-card:hover::before {
    background: linear-gradient(135deg, var(--ethereum), #4338ca);
}

.network-card.tron-card:hover::before {
    background: linear-gradient(135deg, var(--tron), #dc2626);
}

.network-card.bsc-card:hover::before {
    background: linear-gradient(135deg, var(--bsc), #d97706);
}

.network-card.polygon-card:hover::before {
    background: linear-gradient(135deg, var(--polygon), #6366f1);
}

.network-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.network-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text);
    flex: 1;
}

.network-type {
    background: var(--surface-alt);
    color: var(--text-secondary);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.network-info {
    margin-bottom: 1.5rem;
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
}

.info-item:last-child {
    border-bottom: none;
}

.info-item .label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.info-item .value {
    font-weight: 500;
    color: var(--text);
}

.info-item .value.savings {
    color: var(--accent);
    font-weight: 600;
}

.network-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.875rem;
}

/* Calculator Section */
.calculator {
    background: var(--surface-alt);
}

.calculator-widget {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 3rem;
    box-shadow: 0 8px 32px var(--shadow);
    max-width: 800px;
    margin: 0 auto;
}

.calculator-inputs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-group label {
    font-weight: 500;
    color: var(--text);
    font-size: 0.875rem;
}

.input-group select,
.input-group input {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 0.875rem 1rem;
    color: var(--text);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.input-group select:focus,
.input-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.input-group select:hover,
.input-group input:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.calculator-results {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.result-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem;
    text-align: center;
    min-width: 150px;
    transition: all 0.3s ease;
}

.result-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--shadow);
}

.result-card.savings-card {
    border-color: var(--accent);
    background: rgba(16, 185, 129, 0.05);
}

.result-card h4 {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.result-card .amount {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.25rem;
}

.savings-card .amount {
    color: var(--accent);
}

.result-card .period {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.result-arrow {
    color: var(--primary);
    font-size: 1.5rem;
}

.result-summary {
    width: 100%;
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.savings-amount {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.savings-percent {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
}

/* How it Works Section */
.steps {
    display: grid;
    gap: 3rem;
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 2rem;
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.step::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.step:hover::before {
    transform: scaleX(1);
}

.step:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px var(--shadow);
}

.step-number {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
}

.step-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 1rem;
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.step-features {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.feature {
    font-size: 0.875rem;
    color: var(--accent);
    font-weight: 500;
}

.step-icon {
    width: 64px;
    height: 64px;
    background: var(--surface-alt);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

.step-icon svg {
    width: 32px;
    height: 32px;
}

/* FAQ Section */
.faq {
    background: var(--surface-alt);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: 0 8px 24px var(--shadow);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.faq-question:hover {
    background: var(--surface-alt);
}

.faq-question h4 {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--text);
}

.faq-question i {
    color: var(--primary);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 200px;
}

.faq-answer p {
    padding: 0 2rem 1.5rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* CTA Section */
.cta {
    background: var(--gradient-primary);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.125rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.cta-content .btn-primary {
    background: white;
    color: var(--primary);
    margin-bottom: 3rem;
}

.cta-content .btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(255, 255, 255, 0.3);
}

.cta-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.cta-stat {
    text-align: center;
    transition: all 0.3s ease;
}

.cta-stat:hover {
    transform: translateY(-4px);
}

.cta-stat strong {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.cta-stat span {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* Footer */
.footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .nav-brand {
    margin-bottom: 1rem;
}

.footer-brand p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--surface-alt);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 1rem;
}

.footer-column a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.25rem 0;
    transition: all 0.3s ease;
}

.footer-column a:hover {
    color: var(--primary);
    transform: translateX(4px);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-bottom p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.footer-legal {
    display: flex;
    gap: 2rem;
}

.footer-legal a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: all 0.3s ease;
}

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

/* Responsive Design */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .nav-links {
        gap: 1.5rem;
    }
    
    .comparison-row {
        grid-template-columns: 1fr;
        gap: 0.5rem;
        text-align: center;
    }
    
    .step {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    .nav {
        padding: 1rem;
    }
    
    .nav-center {
        display: none;
    }
    
    .hero {
        padding: 6rem 0 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-description {
        font-size: 1.125rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .trust-indicators {
        flex-direction: column;
        gap: 1rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .gas-explanation {
        grid-template-columns: 1fr;
    }
    
    .networks-grid {
        grid-template-columns: 1fr;
    }
    
    .calculator-widget {
        padding: 2rem;
    }
    
    .calculator-inputs {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .calculator-results {
        flex-direction: column;
        gap: 1rem;
    }
    
    .result-arrow {
        transform: rotate(90deg);
    }
    
    .cta-content h2 {
        font-size: 2rem;
    }
    
    .cta-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .section-header h2 {
        font-size: 1.75rem;
    }
    
    .gas-card,
    .network-card,
    .step {
        padding: 1.5rem;
    }
    
    .calculator-widget {
        padding: 1.5rem;
    }
    
    .faq-question {
        padding: 1rem 1.5rem;
    }
    
    .faq-answer p {
        padding: 0 1.5rem 1rem;
    }
}

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

/* Notification Styles */
.notification {
    position: fixed;
    top: 100px;
    right: 20px;
    z-index: 10000;
    max-width: 400px;
}

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

/* Focus styles for keyboard navigation */
.clickable:focus,
button:focus,
select:focus,
input:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --shadow: rgba(0, 0, 0, 0.5);
    }
    
    .light-theme {
        --border: #000000;
        --text-secondary: #333333;
    }
    
    .dark-theme {
        --border: #ffffff;
        --text-secondary: #cccccc;
    }
}

/* Print styles */
@media print {
    .header,
    .footer,
    .cta,
    .bg-animation {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .hero {
        padding: 2rem 0;
    }
}