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

:root {
    --indigo: #1a1a2e;
    --cyan: #00d4ff;
    --cyan-dim: rgba(0, 212, 255, 0.1);
    --cyan-glow: rgba(0, 212, 255, 0.3);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-dim: rgba(255, 255, 255, 0.5);
}

body {
    font-family: 'Space Grotesk', sans-serif;
    background: var(--indigo);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

code, .mono {
    font-family: 'JetBrains Mono', monospace;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 1;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.vapor-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.15), transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(138, 43, 226, 0.1), transparent 50%),
        linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    animation: vapor-shift 15s ease-in-out infinite;
}

@keyframes vapor-shift {
    0%, 100% {
        transform: scale(1) translateY(0);
    }
    50% {
        transform: scale(1.05) translateY(-2%);
    }
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 3rem;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--cyan);
}

.logo svg {
    filter: drop-shadow(0 0 8px var(--cyan-glow));
}

.logo.small {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-primary), var(--cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.6;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--indigo);
    background: var(--cyan);
    border: none;
    border-radius: 0.5rem;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px var(--cyan-glow);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px var(--cyan-glow);
}

/* Sections */
.section {
    padding: 6rem 0;
    position: relative;
}

.section.dark {
    background: rgba(0, 0, 0, 0.3);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    text-align: center;
    margin-bottom: 4rem;
    color: var(--text-primary);
}

/* How It Works */
.steps {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    flex-wrap: wrap;
}

.step {
    flex: 1;
    min-width: 250px;
    text-align: center;
    padding: 2rem;
    background: rgba(0, 212, 255, 0.05);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 1rem;
    transition: all 0.3s ease;
}

.step:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--cyan);
    transform: translateY(-4px);
}

.step-number {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--cyan);
    margin-bottom: 1rem;
    opacity: 0.6;
}

.step h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.step p {
    color: var(--text-secondary);
}

.step-arrow {
    font-size: 2rem;
    color: var(--cyan);
    opacity: 0.3;
    display: none;
}

@media (min-width: 768px) {
    .step-arrow {
        display: block;
    }
}

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

.card {
    padding: 2rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 1rem;
    transition: all 0.3s ease;
}

.card:hover {
    background: rgba(0, 212, 255, 0.05);
    border-color: var(--cyan);
    transform: translateY(-4px);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Expandable cards */
.card.expandable {
    cursor: pointer;
    position: relative;
}

.card-details {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, margin-top 0.4s ease, opacity 0.3s ease;
    opacity: 0;
    margin-top: 0;
}

.card.expandable.open .card-details {
    max-height: 500px;
    opacity: 1;
    margin-top: 1.25rem;
}

.card-details ul {
    list-style: none;
    padding: 0;
    margin-bottom: 1rem;
}

.card-details li {
    position: relative;
    padding-left: 1.25rem;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.5;
}

.card-details li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--cyan);
    font-weight: 600;
}

.card-example {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.6;
    padding: 0.75rem 1rem;
    background: rgba(0, 212, 255, 0.05);
    border-left: 2px solid var(--cyan);
    border-radius: 0 6px 6px 0;
}

.card-example strong {
    color: var(--cyan);
}

.card-expand-hint {
    display: block;
    margin-top: 0.75rem;
    font-size: 0.8rem;
    color: var(--cyan);
    opacity: 0.6;
    transition: opacity 0.2s;
    font-family: 'JetBrains Mono', monospace;
}

.card.expandable:hover .card-expand-hint {
    opacity: 1;
}

.card.expandable.open .card-expand-hint {
    display: none;
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature {
    padding: 1.5rem;
    border-left: 3px solid var(--cyan);
    background: rgba(0, 212, 255, 0.03);
}

.feature h4 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--cyan);
}

.feature p {
    color: var(--text-secondary);
}

/* Pricing */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.pricing-card {
    padding: 2.5rem 2rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 1rem;
    text-align: center;
    position: relative;
    transition: all 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-8px);
    border-color: var(--cyan);
}

.pricing-card.featured {
    background: rgba(0, 212, 255, 0.05);
    border: 2px solid var(--cyan);
    box-shadow: 0 0 40px var(--cyan-glow);
}

.badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--cyan);
    color: var(--indigo);
    padding: 0.25rem 1rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.price {
    font-size: 3rem;
    font-weight: 700;
    color: var(--cyan);
    margin-bottom: 2rem;
}

.price span {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.features-list {
    list-style: none;
    margin-bottom: 2rem;
    text-align: left;
}

.features-list li {
    padding: 0.75rem 0;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.features-list li:before {
    content: "✓";
    color: var(--cyan);
    font-weight: bold;
    margin-right: 0.75rem;
}

.btn-primary, .btn-secondary {
    display: block;
    width: 100%;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    text-align: center;
}

.btn-primary {
    background: var(--cyan);
    color: var(--indigo);
    box-shadow: 0 4px 15px var(--cyan-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px var(--cyan-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--cyan);
    border: 2px solid var(--cyan);
}

.btn-secondary:hover {
    background: rgba(0, 212, 255, 0.1);
}

/* Footer */
.footer {
    background: rgba(0, 0, 0, 0.5);
    padding: 4rem 0 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-brand .tagline {
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-dim);
    font-size: 0.875rem;
    letter-spacing: 0.05em;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
}

.link-group h4 {
    color: var(--cyan);
    margin-bottom: 1rem;
    font-size: 1rem;
}

.link-group a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 0.75rem;
    transition: color 0.3s ease;
}

.link-group a:hover {
    color: var(--cyan);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-dim);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }

    .section {
        padding: 4rem 0;
    }

    .steps {
        flex-direction: column;
    }

    .step-arrow {
        transform: rotate(90deg);
        display: block;
        margin: 1rem 0;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

@media (max-width: 375px) {
    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }
}

/* Trust & Security */
.title-accent {
    color: var(--cyan);
}

.section-subtitle {
    max-width: 640px;
    margin: 0 auto 3rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.0625rem;
    line-height: 1.7;
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 1.5rem;
}

.trust-item {
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 0.75rem;
    transition: all 0.3s ease;
}

.trust-item:hover {
    background: rgba(0, 212, 255, 0.04);
    border-color: rgba(0, 212, 255, 0.2);
}

.trust-icon {
    font-size: 1.75rem;
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.trust-content h4 {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.375rem;
}

.trust-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

@media (max-width: 768px) {
    .trust-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title br {
        display: none;
    }
}

/* Hero badge */
.hero-badge {
    margin-top: 1.5rem;
    font-size: 0.875rem;
    color: var(--cyan);
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.05em;
    opacity: 0.9;
}

/* Early Access */
.early-access-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.early-access-lead {
    font-size: 1.125rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
}

.early-access-perks {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.perk {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.perk-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.perk h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: #fff;
}

.perk p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.5;
}

.early-access-form {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 12px;
    padding: 2rem;
}

.access-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.form-group label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-group input,
.form-group textarea {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    color: #fff;
    font-size: 0.9375rem;
    font-family: 'Space Grotesk', sans-serif;
    transition: border-color 0.2s;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--cyan);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.btn-primary.full-width {
    width: 100%;
    padding: 0.875rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
}

.form-note {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.4);
    text-align: center;
    margin-top: 0.25rem;
}

.form-success {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 2rem 1rem;
    text-align: center;
}

.success-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--cyan);
    color: var(--indigo);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
}

.form-success p {
    font-size: 1.125rem;
    color: #fff;
    font-weight: 500;
}

.form-error {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    color: #ef4444;
    font-size: 0.875rem;
    text-align: center;
}

button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

@media (max-width: 768px) {
    .early-access-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/* Smooth scroll */
html {
    scroll-behavior: smooth;
}

/* Selection */
::selection {
    background: var(--cyan);
    color: var(--indigo);
}