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

:root {
    --yellow: #FFD700;
    --green: #00C853;
    --turquoise: #00CED1;
    --black: #0A1612;
    --white: #FFFFFF;
    --gray: #A0AEC0;
    --light-gray: #F5F5F5;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--black);
    color: var(--white);
    line-height: 1.6;
    font-size: 16px;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-narrow {
    max-width: 700px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-wide {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 60px 24px;
    background: radial-gradient(ellipse at top, rgba(0, 206, 209, 0.08), transparent 60%),
                radial-gradient(ellipse at bottom, rgba(255, 215, 0, 0.05), transparent 60%);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--yellow);
    margin-bottom: 32px;
    text-transform: uppercase;
}

.badge::before {
    content: '●';
    font-size: 8px;
    color: var(--yellow);
}

h1 {
    font-size: clamp(48px, 12vw, 80px);
    font-weight: 900;
    letter-spacing: -2px;
    margin-bottom: 16px;
    color: var(--white);
}

.tagline {
    font-size: clamp(16px, 3vw, 18px);
    color: var(--gray);
    margin-bottom: 48px;
}

/* Waitlist Form */
.waitlist-form {
    max-width: 500px;
    margin: 0 auto 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

@media (max-width: 600px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.waitlist-form input,
.waitlist-form select {
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: var(--white);
    font-size: 15px;
    font-family: 'Inter', sans-serif;
    transition: all 0.3s ease;
}

.waitlist-form input::placeholder {
    color: var(--gray);
}

.waitlist-form input:focus,
.waitlist-form select:focus {
    outline: none;
    border-color: var(--yellow);
    background: rgba(255, 255, 255, 0.08);
}

.waitlist-form select {
    cursor: pointer;
    color: var(--white);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%23A0AEC0' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.waitlist-form select option {
    background: var(--black);
    color: var(--white);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    text-align: left;
    font-size: 14px;
    color: var(--gray);
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--yellow);
}

.btn-submit {
    width: 100%;
    padding: 14px 32px;
    background: var(--yellow);
    color: var(--black);
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 8px;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 215, 0, 0.3);
}

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

.btn-text {
    display: inline-block;
}

.btn-loader {
    display: none;
    width: 16px;
    height: 16px;
    border: 2px solid var(--black);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.btn-submit.loading .btn-text {
    display: none;
}

.btn-submit.loading .btn-loader {
    display: inline-block;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.waitlist-count {
    font-size: 13px;
    color: var(--gray);
    margin-bottom: 24px;
}

.waitlist-count span {
    color: var(--white);
    font-weight: 600;
}

.mvp-link {
    margin-bottom: 64px;
}

.link-btn {
    display: inline-block;
    color: var(--yellow);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    border-bottom: 1px solid transparent;
}

.link-btn:hover {
    border-bottom-color: var(--yellow);
}

/* Stats */
.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 0;
    padding: 40px 0 0;
    border-top: 1px solid rgba(255, 215, 0, 0.1);
}

.stat {
    text-align: center;
}

.stat-num {
    font-size: clamp(28px, 5vw, 36px);
    font-weight: 900;
    color: var(--yellow);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 12px;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Dark Section */
.section-dark {
    background: var(--black);
    padding: 80px 24px;
    text-align: center;
}

h2 {
    font-size: clamp(28px, 5vw, 36px);
    font-weight: 900;
    margin-bottom: 20px;
}

.large-text {
    font-size: clamp(18px, 3vw, 22px);
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.subtitle {
    font-size: 15px;
    color: var(--gray);
    margin-bottom: 48px;
}

/* Problem & Solution Flow */
.problem-solution {
    padding: 100px 24px;
    position: relative;
}

.problem-section {
    text-align: center;
    padding: 60px 48px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 20px;
    margin-bottom: 100px;
    position: relative;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.problem-section h2 {
    margin-bottom: 24px;
}

.problem-section .large-text {
    font-size: clamp(20px, 3vw, 24px);
    line-height: 1.5;
}

.problem-section::after {
    content: '↓';
    position: absolute;
    bottom: -60px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 32px;
    color: var(--gray);
    opacity: 0.4;
}

.solution-header {
    text-align: center;
    margin-bottom: 48px;
    padding: 0 24px;
}

.solution-header h2 {
    margin-bottom: 16px;
}

.solution-header .subtitle {
    font-size: 17px;
    max-width: 700px;
    margin: 0 auto;
}

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

.card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 32px;
    text-align: left;
    transition: all 0.3s ease;
    position: relative;
}

.card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 215, 0, 0.4);
    box-shadow: 0 8px 24px rgba(255, 215, 0, 0.12);
    background: rgba(255, 255, 255, 0.05);
}

.card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--white);
}

.card ul {
    list-style: none;
}

.card li {
    padding: 10px 0;
    color: var(--gray);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.2s ease;
}

.card li:hover {
    color: var(--white);
    padding-left: 8px;
}

.card li:last-child {
    border-bottom: none;
}

.card li::before {
    content: '✓';
    color: var(--yellow);
    margin-right: 12px;
    font-weight: 700;
}

/* Steps */
.steps {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 48px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 768px) {
    .steps {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

.step {
    text-align: left;
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 215, 0, 0.2);
    border-radius: 12px;
    padding: 28px;
    transition: all 0.3s ease;
    position: relative;
}

.step:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 215, 0, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(255, 215, 0, 0.1);
}

.step-num {
    font-size: 14px;
    font-weight: 700;
    color: var(--yellow);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.step h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--white);
}

.step p {
    color: var(--gray);
    font-size: 15px;
    line-height: 1.6;
}

/* FAQ */
.faq {
    text-align: left;
    max-width: 650px;
    margin: 0 auto;
}

details {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

details:hover {
    background: rgba(255, 255, 255, 0.05);
}

details[open] {
    background: rgba(255, 255, 255, 0.05);
}

summary {
    font-weight: 700;
    font-size: 16px;
    list-style: none;
    cursor: pointer;
    user-select: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

summary::-webkit-details-marker {
    display: none;
}

summary::after {
    content: '+';
    font-size: 24px;
    color: var(--yellow);
    font-weight: 400;
    flex-shrink: 0;
    margin-left: 16px;
}

details[open] summary::after {
    content: '−';
}

.answer {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.answer p {
    color: var(--gray);
    line-height: 1.7;
}

/* Light Section */
.section-light {
    background: var(--light-gray);
    color: var(--black);
    padding: 100px 24px;
    text-align: center;
}

.quote {
    font-size: clamp(24px, 4vw, 36px);
    font-weight: 700;
    line-height: 1.3;
    margin: 0 auto 32px;
    font-style: italic;
    max-width: 800px;
}

.quote-author {
    font-size: 15px;
    color: var(--gray);
    font-weight: 600;
}

/* Footer */
.footer {
    background: var(--black);
    padding: 80px 24px 40px;
    border-top: 1px solid rgba(255, 215, 0, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

.footer-brand {
    text-align: left;
}

.footer-logo {
    font-size: 28px;
    font-weight: 900;
    color: var(--white);
    margin-bottom: 12px;
}

.footer-brand p {
    color: var(--gray);
    font-size: 14px;
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-column h4 {
    font-size: 13px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-column a {
    color: var(--gray);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 13px;
    color: var(--gray);
}

/* Toast Message */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: 16px 24px;
    background: var(--white);
    color: var(--black);
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1000;
    max-width: 400px;
    text-align: center;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast.success {
    background: var(--green);
    color: var(--white);
}

.toast.error {
    background: #ff4444;
    color: var(--white);
}

/* Responsive */
@media (max-width: 600px) {
    .hero {
        padding: 40px 20px;
    }

    .stats {
        gap: 24px;
        padding: 32px 0 0;
    }

    .stat-num {
        font-size: 24px;
    }

    .stat-label {
        font-size: 11px;
    }

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

    .section-dark {
        padding: 60px 20px;
    }

    .container,
    .container-narrow,
    .container-wide {
        padding: 0 20px;
    }
}