:root {
    /* New Monotone Palette */
    --color-white: #ffffff;
    --color-gray-25: #FCFCFD;
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    --color-black: #000000;

    /* Semantic Mappings */
    --bg-main: var(--color-white);
    --bg-subtle: var(--color-gray-50);
    --text-primary: var(--color-black);
    --text-secondary: var(--color-gray-600);
    --text-muted: var(--color-gray-400);
    --border-color: var(--color-gray-200);

    /* Typography */
    --font-heading: 'Outfit', 'Inter', system-ui, sans-serif;
    --font-sans: 'Inter', system-ui, sans-serif;

    /* Shadows & Radii */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-premium: 0 20px 40px rgba(0, 0, 0, 0.04);
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Animations */
    --duration-normal: 0.4s;
    --ease-premium: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

html {
    scroll-behavior: smooth;
    background-color: var(--bg-main);
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.5;
}

/* Background Texture */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    background-image: url("https://grainy-gradients.vercel.app/noise.svg");
    opacity: 0.03;
    pointer-events: none;
    z-index: 1000;
}

/* Premium Layout Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 4rem;
}

.card {
    background: var(--color-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--duration-normal) var(--ease-premium);
}

.text-gradient {
    background: linear-gradient(to right, var(--color-gray-900), var(--color-gray-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Typography Scale */
h1 {
    font-family: var(--font-heading);
    font-size: 4.5rem;
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.04em;
    color: var(--text-primary);
}

h2 {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.04em;
    color: var(--text-primary);
}

h3 {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* Animations */
.animate-fade-up {
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--duration-normal) var(--ease-premium);
}

.visible .animate-fade-up,
.animate-fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Navigation */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    height: 72px;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 4rem;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.03em;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    transition: color var(--duration-normal);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.75rem;
    border-radius: 99px;
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--duration-normal) var(--ease-premium);
    cursor: pointer;
    border: 1px solid transparent;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

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

.btn-secondary:hover {
    background: var(--bg-subtle);
    border-color: var(--color-gray-300);
}

/* Hero */
.hero {
    padding-top: 12rem;
    padding-bottom: 8rem;
    text-align: center;
    background: radial-gradient(circle at top center, var(--bg-subtle) 0%, var(--bg-main) 60%);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: 99px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
    margin-bottom: 2.5rem;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 2.5rem auto 4rem;
    line-height: 1.6;
}

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

/* Platforms */
.platforms {
    margin-top: 10rem;
    text-align: center;
}

.platforms-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 3.5rem;
    display: block;
}

.platform-icons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6rem;
}

.platform-item {
    display: flex;
    align-items: center;
    gap: 12px;
    opacity: 0.4;
    transition: all var(--duration-normal);
}

.platform-item:hover {
    opacity: 1;
}

.platform-item span {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.03em;
}

/* Features */
#features {
    padding: 10rem 0;
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 1.5rem;
}

.col-8 {
    grid-column: span 8;
}

.col-4 {
    grid-column: span 4;
}

.feature-card {
    padding: 3.5rem;
    display: flex;
    flex-direction: column;
}

.icon-box {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2.5rem;
    color: var(--text-primary);
}

.feature-card h3 {
    margin-bottom: 1.25rem;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

/* One Click Demo */
.one-click-demo {
    display: flex;
    align-items: center;
    gap: 6rem;
    padding: 6rem 4rem;
    margin: 4rem 0;
}

.demo-ui {
    flex: 1.2;
    background: var(--bg-subtle);
    border-radius: var(--radius-xl);
    padding: 3rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-premium);
}

.demo-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    background: var(--color-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: 1.25rem;
}

.toggle-switch {
    width: 44px;
    height: 24px;
    background: var(--color-gray-200);
    border-radius: 99px;
    position: relative;
    cursor: pointer;
    transition: background 0.3s;
}

.toggle-switch.active {
    background: var(--color-black);
}

.toggle-switch::after {
    content: '';
    position: absolute;
    top: 4px;
    left: 4px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: white;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s var(--ease-premium);
}

.toggle-switch.active::after {
    transform: translateX(20px);
}

/* CTA */
.cta-box {
    padding: 8rem 4rem;
    text-align: center;
    background: var(--color-black);
    color: var(--color-white);
    border-radius: var(--radius-xl);
    position: relative;
    overflow: hidden;
}

.cta-box h2 {
    color: var(--color-white);
    margin-bottom: 2rem;
}

.cta-box p {
    color: var(--color-gray-400);
    max-width: 600px;
    margin: 0 auto 4rem;
}

/* Footer */
footer {
    padding: 8rem 0 4rem;
    border-top: 1px solid var(--border-color);
}

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

.copyright {
    color: var(--color-gray-400);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .container {
        padding: 0 2rem;
    }

    .col-8,
    .col-4 {
        grid-column: span 12;
    }

    .one-click-demo {
        flex-direction: column;
        padding: 4rem 2rem;
    }

    h1 {
        font-size: 3.5rem;
    }

    h2 {
        font-size: 2.75rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero {
        padding-top: 8rem;
    }

    h1 {
        font-size: 2.5rem;
    }

    .platform-icons {
        gap: 2rem;
        flex-wrap: wrap;
    }
}