:root {
    --primary: #0066CC;
    --primary-light: #38BDF8;
    --primary-dark: #004C99;
    --secondary: #64748B;
    --bg-light: #F8FAFC;
    --bg-white: #FFFFFF;
    --bg-dark: #0F172A;
    --bg-alt: #F1F5F9;
    --text-main: #1E293B;
    --text-muted: #475569;
    --border: #E2E8F0;
    --container-width: 1100px;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: 'JetBrains+Mono', monospace;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--text-main);
    background-color: var(--bg-white);
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* Typography */
h1, h2, h3, h4 {
    line-height: 1.2;
    margin-bottom: 1rem;
    font-weight: 700;
}

h1 { font-size: 3.5rem; letter-spacing: -0.02em; }
h2 { font-size: 2.5rem; letter-spacing: -0.01em; }
h3 { font-size: 1.5rem; }

.lead {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
    font-family: var(--font-sans);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
}

.btn-secondary {
    background-color: var(--bg-alt);
    color: var(--text-main);
}

.btn-secondary:hover {
    background-color: var(--border);
}

.btn-block {
    display: block;
    width: 100%;
}

/* Header & Nav */
header {
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary);
}

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

.nav-links a:not(.btn) {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 500;
}

/* Hero Section */
.hero {
    padding: 6rem 0;
    background: linear-gradient(180deg, #F0F9FF 0%, #FFFFFF 100%);
    overflow: hidden;
}

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

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: #E0F2FE;
    color: var(--primary);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    border: 1px solid var(--primary-light);
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

.hero-visual img {
    max-width: 120%;
    transform: translateX(10%);
}

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

.section-alt {
    background-color: var(--bg-alt);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

/* Problem Section */
.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.problem-card {
    padding: 2.5rem;
    background: white;
    border: 1px solid var(--border);
    border-radius: 12px;
}

/* Features */
.feature-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
    margin-bottom: 6rem;
}

.feature-item.reverse {
    direction: rtl;
}

.feature-item.reverse .feature-text {
    direction: ltr;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.feature-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* How It Works */
.diagram-container {
    text-align: center;
    margin-bottom: 4rem;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

.step {
    position: relative;
    padding-top: 2rem;
}

.step-num {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    color: var(--primary-light);
    margin-bottom: 1rem;
}

/* Stats */
.stats {
    background-color: var(--bg-dark);
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat-value {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--primary-light);
}

.stat-label {
    font-size: 1.125rem;
    color: var(--secondary);
}

/* Credibility */
.credibility-box {
    background: white;
    padding: 4rem;
    border-radius: 16px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border);
}

.roadmap {
    display: flex;
    justify-content: space-between;
    margin-top: 3rem;
    gap: 1rem;
}

.roadmap-item {
    flex: 1;
    padding: 1.5rem;
    border-left: 3px solid var(--border);
}

.roadmap-item.completed { border-color: var(--primary); }
.roadmap-item.active { border-color: var(--primary-light); }

.roadmap-date {
    display: block;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 0.5rem;
}

.roadmap-event {
    font-weight: 600;
}

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

/* Waitlist Form */
.waitlist-card {
    max-width: 600px;
    margin: 0 auto;
    padding: 3rem;
    background: white;
    border-radius: 16px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.waitlist-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-family: inherit;
    font-size: 1rem;
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-error {
    color: #DC2626;
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

small {
    display: block;
    color: var(--text-muted);
    margin-top: 0.25rem;
    font-size: 0.75rem;
}

/* Footer */
footer {
    padding: 4rem 0 2rem;
    background-color: var(--bg-dark);
    color: white;
}

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

.footer-info p {
    color: var(--secondary);
    margin-top: 1rem;
}

.footer-links h4 {
    margin-bottom: 1.5rem;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--secondary);
    text-decoration: none;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid #1E293B;
    text-align: center;
    color: var(--secondary);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 968px) {
    h1 { font-size: 2.75rem; }
    .hero-grid { grid-template-columns: 1fr; text-align: center; }
    .hero-actions { justify-content: center; }
    .hero-visual img { transform: none; max-width: 100%; }
    .problem-grid { grid-template-columns: 1fr; }
    .feature-item { grid-template-columns: 1fr; gap: 3rem; text-align: center; }
    .feature-item.reverse { direction: ltr; }
    .steps-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
}

.responsive-img {
    max-width: 100%;
    height: auto;
}