/* ============================================
   CLAUDE CARD - Main Stylesheet
   Design inspired by Gemini's dark/light aesthetic
   ============================================ */

/* CSS Variables */
:root {
    /* Colors - Primary Palette */
    --color-primary: #6366f1;
    --color-primary-light: #818cf8;
    --color-primary-dark: #4f46e5;

    /* Accent Colors */
    --color-accent: #22d3ee;
    --color-accent-light: #67e8f9;
    --color-accent-glow: rgba(34, 211, 238, 0.3);

    /* Background Colors */
    --color-bg-dark: #010304;
    --color-bg-darker: #000000;
    --color-bg-light: #ffffff;
    --color-bg-gray: #f8fafc;
    --color-bg-card: #0a0b0d;

    /* Text Colors */
    --color-text-primary: #0f172a;
    --color-text-secondary: #64748b;
    --color-text-light: #ffffff;
    --color-text-muted: #94a3b8;

    /* Gradient */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #22d3ee 100%);
    --gradient-card: linear-gradient(145deg, #1a1b1e 0%, #0a0b0d 100%);
    --gradient-glow: radial-gradient(ellipse at center, rgba(99, 102, 241, 0.15) 0%, transparent 70%);

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
    --font-size-6xl: 4.5rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 60px rgba(99, 102, 241, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Layout */
    --container-max: 1280px;
    --header-height: 72px;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-light);
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

input, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: background var(--transition-base), box-shadow var(--transition-base);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-sm);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 700;
    font-size: var(--font-size-xl);
    color: var(--color-text-primary);
}

.logo-icon {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
}

.nav-menu {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    border-radius: var(--radius-md);
    transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-text-primary);
    background: var(--color-bg-gray);
}

.dropdown-icon {
    transition: transform var(--transition-fast);
}

.nav-item:hover .dropdown-icon {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    padding: var(--space-sm);
    background: var(--color-bg-light);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-fast);
}

.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: block;
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    color: var(--color-text-primary);
    background: var(--color-bg-gray);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-bg-dark);
    color: var(--color-text-light);
}

.btn-primary:hover {
    background: #1a1b1e;
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--color-text-primary);
    border: 1px solid rgba(0, 0, 0, 0.15);
}

.btn-outline:hover {
    background: var(--color-bg-gray);
    border-color: rgba(0, 0, 0, 0.25);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-primary);
}

.btn-ghost:hover {
    background: var(--color-bg-gray);
}

.btn-lg {
    padding: var(--space-md) var(--space-xl);
    font-size: var(--font-size-base);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: calc(var(--header-height) + var(--space-3xl));
    padding-bottom: var(--space-4xl);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-glow);
    pointer-events: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

/* Hero Badge */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(34, 211, 238, 0.1) 100%);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-lg);
    animation: badgeGlow 3s ease-in-out infinite;
}

@keyframes badgeGlow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(99, 102, 241, 0.1);
    }
    50% {
        box-shadow: 0 0 30px rgba(99, 102, 241, 0.2);
    }
}

.badge-icon {
    font-size: var(--font-size-base);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: iconPulse 2s ease-in-out infinite;
}

@keyframes iconPulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

.badge-text {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
}

.hero-text {
    max-width: 560px;
}

.hero-title {
    font-size: var(--font-size-6xl);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-lg);
}

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

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-xl);
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.hero-note {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* Card Showcase */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 500px;
}

.card-showcase {
    position: relative;
    perspective: 1000px;
}

.credit-card {
    width: 380px;
    height: 240px;
    position: relative;
    transform-style: preserve-3d;
    animation: cardFloat 6s ease-in-out infinite;
}

@keyframes cardFloat {
    0%, 100% {
        transform: rotateY(-5deg) rotateX(5deg) translateY(0);
    }
    50% {
        transform: rotateY(5deg) rotateX(-5deg) translateY(-20px);
    }
}

.card-inner {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
}

.card-front {
    position: absolute;
    width: 100%;
    height: 100%;
    background: var(--gradient-card);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    backface-visibility: hidden;
    box-shadow:
        0 25px 50px -12px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.1) inset;
    overflow: hidden;
}

.card-front::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 50%);
    pointer-events: none;
}

.card-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-light);
    font-weight: 700;
    font-size: var(--font-size-lg);
    position: relative;
    z-index: 1;
}

.card-logo-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.card-chip {
    width: 45px;
    height: 35px;
    background: linear-gradient(135deg, #d4af37 0%, #f5d76e 50%, #d4af37 100%);
    border-radius: 6px;
    position: relative;
    z-index: 1;
}

.card-chip::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 70%;
    height: 60%;
    border: 1px solid rgba(0,0,0,0.2);
    border-radius: 3px;
}

.card-number {
    font-size: var(--font-size-xl);
    font-weight: 500;
    letter-spacing: 0.15em;
    color: var(--color-text-light);
    position: relative;
    z-index: 1;
}

.card-details {
    display: flex;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

.card-holder, .card-expiry {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.card-details .label {
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.5);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.card-details .value {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    font-weight: 500;
}

.card-network {
    position: absolute;
    bottom: var(--space-xl);
    right: var(--space-xl);
    z-index: 1;
}

.card-glow {
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, transparent 60%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    animation: glowPulse 4s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% {
        opacity: 0.5;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 0.8;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

/* Floating Stats */
.floating-stats {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
}

.stat-bubble {
    position: absolute;
    background: var(--color-bg-light);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: bubbleFloat 5s ease-in-out infinite;
}

.stat-bubble .stat-value {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
}

.stat-bubble .stat-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.stat-1 {
    top: 10%;
    right: -10%;
    animation-delay: 0s;
}

.stat-2 {
    bottom: 30%;
    right: -20%;
    animation-delay: -1.5s;
}

.stat-3 {
    bottom: 10%;
    left: -10%;
    animation-delay: -3s;
}

@keyframes bubbleFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* ============================================
   TICKER SECTION
   ============================================ */
.ticker {
    background: var(--color-bg-dark);
    color: var(--color-text-light);
    padding: var(--space-md) 0;
    overflow: hidden;
}

.ticker-track {
    display: flex;
    width: max-content;
    animation: tickerScroll 30s linear infinite;
}

@keyframes tickerScroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

.ticker-content {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    padding: 0 var(--space-xl);
}

.ticker-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    white-space: nowrap;
}

.token-icon {
    color: var(--color-primary-light);
}

.token-price {
    font-weight: 600;
}

.token-change {
    font-weight: 500;
}

.token-change.positive {
    color: #10b981;
}

.token-change.negative {
    color: #ef4444;
}

.ticker-divider {
    color: var(--color-text-muted);
    opacity: 0.3;
}

/* ============================================
   SECTION STYLES
   ============================================ */
.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto var(--space-3xl);
}

.section-tag {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.section-tag.light {
    color: var(--color-accent);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-md);
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ============================================
   REWARDS SECTION
   ============================================ */
.rewards {
    padding: var(--space-4xl) 0;
    background: var(--color-bg-gray);
}

.rewards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-3xl);
}

.reward-card {
    background: var(--color-bg-light);
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-base);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

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

.reward-card.featured {
    background: var(--gradient-card);
    color: var(--color-text-light);
    border: none;
}

.reward-card.featured .reward-description {
    color: rgba(255, 255, 255, 0.7);
}

.reward-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    background: var(--color-bg-gray);
}

.reward-card.featured .reward-icon {
    background: rgba(255, 255, 255, 0.1);
}

.reward-icon.dining { color: #f97316; }
.reward-icon.groceries { color: #22c55e; }
.reward-icon.gas { color: #3b82f6; }
.reward-icon.everything { color: #8b5cf6; }

.reward-rate {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    line-height: 1;
    margin-bottom: var(--space-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.reward-card.featured .reward-rate {
    background: linear-gradient(135deg, #fff 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.reward-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.reward-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* Rewards Calculator */
.rewards-example {
    max-width: 500px;
    margin: 0 auto;
}

.example-card {
    background: var(--color-bg-light);
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.example-card h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-lg);
    text-align: center;
}

.example-calc {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.calc-input {
    flex: 1;
}

.calc-input label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.input-wrapper {
    display: flex;
    align-items: center;
    background: var(--color-bg-gray);
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
}

.input-wrapper .currency {
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-right: var(--space-sm);
}

.input-wrapper input {
    flex: 1;
    border: none;
    background: none;
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text-primary);
    outline: none;
    width: 100%;
}

.calc-result {
    flex: 1;
    text-align: center;
    padding: var(--space-md);
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    color: var(--color-text-light);
}

.result-label {
    display: block;
    font-size: var(--font-size-xs);
    opacity: 0.8;
    margin-bottom: var(--space-xs);
}

.result-value {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.result-usd {
    display: block;
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

/* ============================================
   UTILITY SECTION
   ============================================ */
.utility {
    padding: var(--space-4xl) 0;
}

.utility-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
}

.utility-content .section-tag {
    text-align: left;
}

.utility-content .section-title {
    text-align: left;
}

.utility-content .section-description {
    text-align: left;
    margin-bottom: var(--space-xl);
}

.utility-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.utility-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    transition: background var(--transition-fast);
}

.utility-item:hover {
    background: var(--color-bg-gray);
}

.utility-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    color: var(--color-text-light);
    flex-shrink: 0;
}

.utility-text h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.utility-text p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* Token Display */
.utility-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

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

.token-3d {
    width: 200px;
    height: 200px;
    margin: 0 auto var(--space-xl);
    perspective: 1000px;
}

.token-face {
    width: 100%;
    height: 100%;
    background: var(--gradient-card);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.3),
        0 0 0 2px rgba(255, 255, 255, 0.1) inset,
        0 0 60px rgba(99, 102, 241, 0.3);
    animation: tokenRotate 8s ease-in-out infinite;
}

@keyframes tokenRotate {
    0%, 100% {
        transform: rotateY(0deg);
    }
    50% {
        transform: rotateY(15deg);
    }
}

.token-symbol {
    font-size: 4rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.token-name {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text-light);
    letter-spacing: 0.1em;
}

.token-stats {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
}

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

.token-stat .stat-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-bottom: var(--space-xs);
}

.token-stat .stat-value {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text-primary);
}

/* ============================================
   BENEFITS SECTION
   ============================================ */
.benefits {
    padding: var(--space-4xl) 0;
    background: var(--color-bg-gray);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.benefit-card {
    background: var(--color-bg-light);
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-base);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

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

.benefit-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    color: var(--color-text-light);
}

.benefit-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.benefit-card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* ============================================
   SECURITY SECTION
   ============================================ */
.security {
    padding: var(--space-4xl) 0;
    background: var(--color-bg-dark);
    color: var(--color-text-light);
}

.security-content {
    text-align: center;
}

.security-text {
    max-width: 640px;
    margin: 0 auto var(--space-3xl);
}

.security .section-title {
    color: var(--color-text-light);
}

.security .section-description {
    color: rgba(255, 255, 255, 0.7);
}

.certifications {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.cert-card {
    background: rgba(255, 255, 255, 0.05);
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-base);
}

.cert-card:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-4px);
}

.cert-badge {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
}

.cert-card h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.cert-card p {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta {
    padding: var(--space-4xl) 0;
    background: var(--gradient-primary);
    text-align: center;
}

.cta-content {
    max-width: 640px;
    margin: 0 auto;
}

.cta h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
}

.cta p {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-xl);
}

.cta-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    margin-bottom: var(--space-lg);
}

.cta .btn-primary {
    background: var(--color-bg-light);
    color: var(--color-text-primary);
}

.cta .btn-primary:hover {
    background: rgba(255, 255, 255, 0.9);
}

.cta .btn-ghost {
    color: var(--color-text-light);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.cta .btn-ghost:hover {
    background: rgba(255, 255, 255, 0.1);
}

.cta-note {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--color-bg-dark);
    color: var(--color-text-light);
    padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--space-4xl);
    margin-bottom: var(--space-3xl);
}

.footer-brand .logo {
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
}

.footer-tagline {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: var(--space-lg);
}

.social-links {
    display: flex;
    gap: var(--space-md);
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-text-light);
    transition: all var(--transition-fast);
}

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

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

.footer-column h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--color-text-light);
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-column a {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition-fast);
}

.footer-column a:hover {
    color: var(--color-text-light);
}

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-legal p {
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: var(--space-sm);
}

.disclaimer {
    max-width: 800px;
    line-height: 1.6;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text {
        max-width: 100%;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-visual {
        min-height: 400px;
    }

    .credit-card {
        width: 320px;
        height: 200px;
    }

    .rewards-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .utility-grid {
        grid-template-columns: 1fr;
        gap: var(--space-3xl);
    }

    .utility-content {
        text-align: center;
    }

    .utility-content .section-tag,
    .utility-content .section-title,
    .utility-content .section-description {
        text-align: center;
    }

    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .certifications {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-3xl);
    }

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

@media (max-width: 768px) {
    :root {
        --font-size-6xl: 3rem;
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
    }

    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-bg-light);
        padding: var(--space-lg);
        transform: translateX(100%);
        transition: transform var(--transition-base);
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-list {
        flex-direction: column;
        align-items: stretch;
    }

    .nav-link {
        padding: var(--space-md);
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        padding-left: var(--space-lg);
        display: none;
    }

    .nav-item:hover .dropdown-menu {
        display: block;
    }

    .nav-actions {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        min-height: auto;
        padding-top: calc(var(--header-height) + var(--space-xl));
        padding-bottom: var(--space-3xl);
    }

    .rewards-grid {
        grid-template-columns: 1fr;
    }

    .example-calc {
        flex-direction: column;
    }

    .benefits-grid {
        grid-template-columns: 1fr;
    }

    .certifications {
        grid-template-columns: 1fr;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .footer-links {
        grid-template-columns: 1fr 1fr;
    }

    .floating-stats {
        display: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }

    .credit-card {
        width: 280px;
        height: 175px;
    }

    .card-front {
        padding: var(--space-md);
    }

    .card-number {
        font-size: var(--font-size-base);
    }

    .token-3d {
        width: 150px;
        height: 150px;
    }

    .token-symbol {
        font-size: 3rem;
    }

    .token-stats {
        flex-direction: column;
        gap: var(--space-md);
    }
}