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

:root {
    --bg-primary: #0a0a0b;
    --bg-secondary: #111113;
    --bg-card: #161618;
    --bg-card-hover: #1a1a1c;
    --text-primary: #f5f5f7;
    --text-secondary: #a1a1aa;
    --text-muted: #6b6b76;
    --border-color: #1f1f23;
    --border-hover: #2f2f35;
    --accent-1: #FF6B6B;
    --accent-2: #C44DFF;
    --accent-3: #4D9EFF;
    --accent-gradient: linear-gradient(135deg, #FF6B6B, #C44DFF, #4D9EFF);
    --accent-subtle: rgba(196, 77, 255, 0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --max-width: 1100px;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', Roboto, Helvetica, Arial, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', monospace;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--accent-2);
}

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

/* === Cursor Glow === */
.cursor-glow {
    position: fixed;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(196, 77, 255, 0.06) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s ease;
}

/* === Navigation === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 11, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 1.1rem;
}

.logo-icon {
    flex-shrink: 0;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.2s;
}

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

.nav-cta {
    background: var(--accent-gradient);
    color: white !important;
    padding: 8px 20px;
    border-radius: 100px;
    font-weight: 600 !important;
    font-size: 0.875rem;
    transition: opacity 0.2s !important;
}

.nav-cta:hover {
    opacity: 0.9;
    color: white !important;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
}

/* === Hero Section === */
.hero {
    padding: 160px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(196, 77, 255, 0.04) 0%, transparent 60%);
    transform: translate(-50%, -60%);
    pointer-events: none;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: var(--accent-subtle);
    border: 1px solid rgba(196, 77, 255, 0.2);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent-2);
    margin-bottom: 32px;
    letter-spacing: 0.3px;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 3.8rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 680px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.hero-note {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 100px;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 1px 3px rgba(196, 77, 255, 0.2);
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(196, 77, 255, 0.3);
    color: white;
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.btn-full {
    width: 100%;
}

.btn-large {
    padding: 16px 40px;
    font-size: 1.05rem;
}

/* === Features Grid (under hero) === */
.features-grid {
    padding: 40px 0 80px;
}

.features-grid-inner {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.feature-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all 0.2s;
}

.feature-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.feature-icon {
    color: var(--accent-2);
    display: flex;
    align-items: center;
}

.feature-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

/* === Section Common === */
.section-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--accent-2);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 640px;
    line-height: 1.7;
    margin-bottom: 24px;
}

.section-highlight {
    font-size: 1.15rem;
    color: var(--text-primary);
    font-weight: 500;
    font-style: italic;
}

.section-cta {
    margin-top: 40px;
    text-align: center;
}

.cta-note {
    margin-top: 12px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* === Problem Section === */
.problem-section,
.solution-section,
.how-section,
.features-section,
.usecases-section,
.faq-section {
    padding: 100px 0;
    border-bottom: 1px solid var(--border-color);
}

.problem-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.problem-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all 0.2s;
}

.problem-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.problem-number {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-2);
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    font-family: var(--font-mono);
}

.problem-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
}

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

/* === How It Works Steps === */
.steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.step {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    transition: all 0.2s;
    position: relative;
}

.step:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.step-number {
    font-family: var(--font-mono);
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    line-height: 1;
}

.step h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.step p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* === Features List === */
.features-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.feature-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all 0.2s;
}

.feature-item:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.feature-item h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 12px;
}

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

/* === Use Cases Grid === */
.usecases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 48px;
}

.usecase-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    transition: all 0.2s;
}

.usecase-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.usecase-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.usecase-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* === Waitlist Section === */
.waitlist-section {
    padding: 100px 0;
    border-bottom: 1px solid var(--border-color);
}

.waitlist-card {
    max-width: 540px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 48px 40px;
    text-align: center;
}

.waitlist-title {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.2;
}

.waitlist-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.6;
}

.waitlist-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.select-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.input-field {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: inherit;
    transition: border-color 0.2s;
    outline: none;
}

.input-field:focus {
    border-color: var(--accent-2);
}

.input-field::placeholder {
    color: var(--text-muted);
}

select.input-field {
    cursor: pointer;
    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 1.5L6 6.5L11 1.5' stroke='%236b6b76' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 40px;
}

select.input-field option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* === FAQ Section === */
.faq-list {
    max-width: 700px;
    margin: 40px auto 0;
}

.faq-item {
    border-bottom: 1px solid var(--border-color);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    font-family: inherit;
    text-align: left;
    transition: color 0.2s;
}

.faq-question:hover {
    color: var(--accent-2);
}

.faq-question svg {
    flex-shrink: 0;
    transition: transform 0.3s;
}

.faq-item.active .faq-question svg {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding-bottom: 24px;
}

.faq-answer p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* === Final CTA === */
.final-cta {
    padding: 120px 0;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.final-cta-title {
    font-size: clamp(1.8rem, 3.5vw, 2.6rem);
    font-weight: 700;
    max-width: 600px;
    margin: 0 auto 20px;
    line-height: 1.15;
}

.final-cta-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 480px;
    margin: 0 auto 36px;
    line-height: 1.6;
}

/* === Footer === */
.footer {
    padding: 60px 0 40px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-tagline {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 12px;
    max-width: 260px;
    line-height: 1.5;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 24px;
    max-width: 400px;
}

.footer-links a {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

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

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 24px;
}

.footer-bottom p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* === Mobile === */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        background: var(--bg-primary);
        border-bottom: 1px solid var(--border-color);
        padding: 16px 24px;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        padding: 12px 0;
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-links a:last-child {
        border-bottom: none;
    }

    .nav-cta {
        text-align: center;
        margin-top: 8px;
    }

    .hero {
        padding: 120px 0 60px;
    }

    .hero-title {
        font-size: clamp(2rem, 6vw, 2.8rem);
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .problem-cards,
    .features-list,
    .usecases-grid {
        grid-template-columns: 1fr;
    }

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

    .select-group {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        gap: 32px;
    }

    .waitlist-card {
        padding: 32px 24px;
    }

    .section-cta {
        margin-top: 32px;
    }
}

@media (max-width: 480px) {
    .steps {
        grid-template-columns: 1fr;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 320px;
    }
}