/* ========================================
   Design Tokens
   ======================================== */
:root {
    /* Colors */
    --color-bg-primary: #0A0A0F;
    --color-bg-secondary: #12121A;
    --color-bg-tertiary: #1A1A24;

    --color-text-primary: #FFFFFF;
    --color-text-secondary: #B4B4C7;
    --color-text-tertiary: #6B6B7E;

    --color-accent-cyan: #00D4FF;
    --color-accent-purple: #7B61FF;
    --color-accent-gold: #FFB800;

    --gradient-primary: linear-gradient(135deg, #00D4FF 0%, #7B61FF 100%);
    --gradient-hero: radial-gradient(ellipse at 50% 0%, rgba(0, 212, 255, 0.15) 0%, transparent 50%);

    /* Glass */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-blur: blur(20px);

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 5rem;
    --space-3xl: 8rem;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --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: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
}

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

input {
    font-family: inherit;
    border: none;
    outline: none;
    background: none;
}

/* ========================================
   Utilities
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

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

/* ========================================
   Navigation
   ======================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: var(--space-md) 0;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo-icon {
    font-size: var(--font-size-xl);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.nav-cta {
    padding: var(--space-xs) var(--space-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-base);
}

.nav-cta:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(var(--space-3xl) + 60px) var(--space-md) var(--space-3xl);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 15s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.3) 0%, transparent 70%);
    top: -200px;
    left: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(123, 97, 255, 0.3) 0%, transparent 70%);
    top: 50%;
    right: -150px;
    animation-delay: -5s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.2) 0%, transparent 70%);
    bottom: -100px;
    left: 30%;
    animation-delay: -10s;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    25% {
        transform: translate(30px, -30px) scale(1.05);
    }

    50% {
        transform: translate(-20px, 20px) scale(0.95);
    }

    75% {
        transform: translate(20px, 30px) scale(1.02);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    flex: 1;
    max-width: 700px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent-cyan);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.5;
        transform: scale(0.8);
    }
}

.hero-title {
    font-size: clamp(var(--font-size-4xl), 8vw, var(--font-size-6xl));
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-lg);
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 540px;
    margin-bottom: var(--space-xl);
    line-height: 1.7;
}

/* ========================================
   Signup Form
   ======================================== */
.signup-form {
    max-width: 480px;
}

.input-group {
    display: flex;
    gap: var(--space-xs);
    padding: 6px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.input-group:focus-within {
    border-color: var(--color-accent-cyan);
    box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.1);
}

.input-group input {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
}

.input-group input::placeholder {
    color: var(--color-text-tertiary);
}

.btn-primary {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-lg);
    background: var(--gradient-primary);
    color: var(--color-bg-primary);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary svg {
    transition: transform var(--transition-base);
}

.btn-primary:hover svg {
    transform: translateX(4px);
}

.form-hint {
    margin-top: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.form-hint span {
    color: var(--color-accent-cyan);
    font-weight: 600;
}

.form-disclaimer {
    margin-top: var(--space-md);
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
    line-height: 1.5;
    max-width: 480px;
    opacity: 0.8;
}

/* ========================================
   Hero Visual (Card Preview)
   ======================================== */
.hero-visual {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    display: none;
}

@media (min-width: 1024px) {
    .hero-visual {
        display: block;
    }
}

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

.card-glass {
    width: 380px;
    height: 240px;
    padding: var(--space-lg);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.02) 100%);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-xl);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transform: rotateY(-5deg) rotateX(5deg);
    transition: transform var(--transition-slow);
    animation: cardFloat 6s ease-in-out infinite;
}

@keyframes cardFloat {

    0%,
    100% {
        transform: rotateY(-5deg) rotateX(5deg) translateY(0);
    }

    50% {
        transform: rotateY(-3deg) rotateX(3deg) translateY(-10px);
    }
}

.card-glass:hover {
    transform: rotateY(0) rotateX(0);
}

.card-glow {
    position: absolute;
    inset: -20px;
    background: radial-gradient(ellipse at center, rgba(0, 212, 255, 0.2) 0%, transparent 60%);
    filter: blur(40px);
    z-index: -1;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-logo {
    font-weight: 700;
    font-size: var(--font-size-lg);
}

.card-type {
    font-size: var(--font-size-sm);
    letter-spacing: 0.1em;
    color: var(--color-text-secondary);
}

.card-balance {
    text-align: center;
}

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

.balance-amount {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-number {
    font-size: var(--font-size-sm);
    letter-spacing: 0.15em;
    color: var(--color-text-secondary);
}

.card-chip {
    width: 40px;
    height: 30px;
    background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
    border-radius: 6px;
    opacity: 0.8;
}

/* ========================================
   Features Section
   ======================================== */
.features {
    padding: var(--space-3xl) 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--space-2xl);
}

.section-title {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.feature-card {
    padding: var(--space-xl);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.feature-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.12);
    transform: translateY(-4px);
}

.feature-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-md);
}

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

.feature-desc {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ========================================
   How It Works Section
   ======================================== */
.how-it-works {
    padding: var(--space-3xl) 0;
    background: var(--color-bg-secondary);
}

.steps {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.step {
    display: flex;
    gap: var(--space-xl);
    align-items: flex-start;
}

.step-number {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
    opacity: 0.5;
    min-width: 100px;
}

.step-content {
    flex: 1;
    padding-top: var(--space-sm);
}

.step-title {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

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

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
    padding: var(--space-3xl) 0;
}

.cta-card {
    padding: var(--space-2xl);
    background: var(--gradient-hero);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    text-align: center;
}

.cta-title {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-md);
}

.cta-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 500px;
    margin: 0 auto var(--space-xl);
}

.cta-section .signup-form {
    max-width: 480px;
    margin: 0 auto var(--space-xl);
}

.trust-badges {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    padding: var(--space-2xl) 0 var(--space-lg);
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
    gap: var(--space-lg);
}

.footer-tagline {
    margin-top: var(--space-sm);
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
}

.footer-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-links a {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    transition: color var(--transition-base);
}

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

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

.copyright {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.legal-links {
    display: flex;
    gap: var(--space-lg);
}

.legal-links a {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    transition: color var(--transition-base);
}

.legal-links a:hover {
    color: var(--color-text-secondary);
}

/* ========================================
   Modal
   ======================================== */
.modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    max-width: 400px;
    padding: var(--space-xl);
    background: var(--color-bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    text-align: center;
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-base);
}

.modal.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-icon {
    margin-bottom: var(--space-md);
}

.modal-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.modal-desc {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

.btn-secondary {
    padding: var(--space-sm) var(--space-xl);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
}

/* ========================================
   Responsive Adjustments
   ======================================== */
@media (max-width: 768px) {
    .hero {
        padding-top: calc(var(--space-2xl) + 60px);
    }

    .step {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .step-number {
        font-size: var(--font-size-3xl);
        min-width: auto;
    }

    .input-group {
        flex-direction: column;
        padding: var(--space-sm);
    }

    .btn-primary {
        width: 100%;
        justify-content: center;
    }

    .trust-badges {
        flex-direction: column;
        align-items: center;
        gap: var(--space-md);
    }

    .cta-card {
        padding: var(--space-xl);
    }
}