@import url('https://fonts.googleapis.com/css2?family=Atkinson+Hyperlegible:ital,wght@0,400;0,700;1,400;1,700&display=swap');

:root {
    /* Brand colors — set these to match your palette */
    --color-accent: #73BFF9; /* primary action color */
    --color-accent-hover: #4DA3E8; /* slightly lighter/darker on hover */
    --color-accent-fg: rgb(255, 255, 255); /* text/icon color on top of accent */

    /* Surface & background */
    --color-bg: rgb(237, 244, 250); /* page background */
    --color-surface: #E8F4FD; /* card / elevated surface */
    --color-surface-border: #4338CA; /* subtle border on surfaces */

    /* Typography */
    --color-text-primary: rgb(7, 7, 7); /* body and heading text */
    --color-text-secondary: rgb(124, 118, 118); /* muted / supporting text */

    /* Logo — replace the file reference in the HTML instead of here */

    /* Typography scale */
    --font-sans: "Atkinson Hyperlegible", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.375rem;
    --font-size-2xl: 1.75rem;
    --font-size-3xl: 2.25rem;
    --font-size-4xl: 3rem;
    --font-size-5xl: 3.75rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Layout */
    --max-width: 72rem;
    --radius-sm: 0.375rem;
    --radius-md: 0.75rem;
    --radius-lg: 1.25rem;
    --radius-full: 9999px;

    /* Motion */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --duration-fast: 150ms;
    --duration-base: 220ms;
}

/* Dark-mode palette override */
@media (prefers-color-scheme: dark) {
    :root {
        /* Override light-mode tokens here if you define separate dark values */
        /* e.g. --color-bg: #0d0d14; */
    }
}


/* ============================================================
   RESET & BASE
   ============================================================ */

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    min-height: 100dvh;
}

img, iframe, video {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

ul[role="list"] {
    list-style: none;
}

/* Focus style — visible for keyboard users, hidden for mouse */
:focus-visible {
    outline: 2.5px solid var(--color-accent);
    outline-offset: 3px;
    border-radius: var(--radius-sm);
}

:focus:not(:focus-visible) {
    outline: none;
}


/* ============================================================
   UTILITIES
   ============================================================ */

.container {
    width: 100%;
    max-width: var(--max-width);
    margin-inline: auto;
    padding-inline: var(--space-6);
}

@media (min-width: 768px) {
    .container {
        padding-inline: var(--space-8);
    }
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.section-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
}


/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 0.75rem 1.75rem;
    font-size: var(--font-size-base);
    font-weight: 600;
    line-height: 1;
    border-radius: var(--radius-full);
    border: 2px solid transparent;
    cursor: pointer;
    transition: background-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
    white-space: nowrap;
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-1px);
}

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

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

.btn--primary:hover {
    background-color: var(--color-accent-hover);
    box-shadow: 0 4px 20px color-mix(in srgb, var(--color-accent) 35%, transparent);
}

.btn--ghost {
    background-color: transparent;
    color: var(--color-text-primary);
    border-color: var(--color-surface-border);
}

.btn--ghost:hover {
    background-color: var(--color-surface);
    border-color: var(--color-accent);
    color: var(--color-accent);
}


/* ============================================================
   HEADER / NAV
   ============================================================ */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: color-mix(in srgb, var(--color-bg) 85%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-surface-border);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--font-size-lg);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-text-primary);
    transition: opacity var(--duration-fast);
}

.nav-logo:hover {
    opacity: 0.8;
}

.logo-img {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
}

.nav-cta {
    font-size: var(--font-size-sm);
    padding: 0.5rem 1.25rem;
}


/* ============================================================
   HERO
   ============================================================ */

.hero {
    padding-block: var(--space-20) var(--space-16);
    text-align: center;
}

@media (min-width: 768px) {
    .hero {
        padding-block: var(--space-24) var(--space-20);
    }
}

.hero-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-6);
    max-width: 56rem;
}

.hero-eyebrow {
    display: inline-block;
    padding: 0.3rem 0.875rem;
    background-color: color-mix(in srgb, var(--color-accent) 12%, transparent);
    color: var(--color-accent);
    border: 1px solid color-mix(in srgb, var(--color-accent) 30%, transparent);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    letter-spacing: 0.04em;
}

.hero-headline {
    font-size: clamp(var(--font-size-3xl), 6vw, var(--font-size-5xl));
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--color-text-primary);
}

.hero-description {
    font-size: clamp(var(--font-size-base), 2vw, var(--font-size-xl));
    color: var(--color-text-secondary);
    max-width: 42rem;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    justify-content: center;
    padding-top: var(--space-2);
}

.hero-actions .btn--primary {
    font-size: var(--font-size-lg);
    padding: 0.9rem 2.25rem;
}


/* ============================================================
   VIDEO DEMO
   ============================================================ */

.demo {
    padding-block: var(--space-12) var(--space-16);
}

.video-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 */
    border-radius: var(--radius-lg);
    overflow: hidden;
    background-color: var(--color-surface);
    border: 1px solid var(--color-surface-border);
    box-shadow: 0 24px 80px color-mix(in srgb, var(--color-bg) 40%, #000);
}

.video-wrapper iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: none;
}


/* ============================================================
   FEATURES
   ============================================================ */

.features {
    padding-block: var(--space-16) var(--space-20);
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

@media (min-width: 640px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-card {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    padding: var(--space-8);
    background-color: var(--color-surface);
    border: 1px solid var(--color-surface-border);
    border-radius: var(--radius-lg);
    transition: border-color var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out);
}

.feature-card:hover {
    border-color: color-mix(in srgb, var(--color-accent) 40%, transparent);
    box-shadow: 0 8px 32px color-mix(in srgb, var(--color-accent) 8%, transparent);
}

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    background-color: color-mix(in srgb, var(--color-accent) 12%, transparent);
    color: var(--color-accent);
    flex-shrink: 0;
}

.feature-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text-primary);
    letter-spacing: -0.01em;
}

.feature-body {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.65;
}


/* ============================================================
   BOTTOM CTA
   ============================================================ */

.bottom-cta {
    padding-block: var(--space-20);
    text-align: center;
    border-top: 1px solid var(--color-surface-border);
}

.bottom-cta-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-6);
    max-width: 44rem;
}

.bottom-cta-headline {
    font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-4xl));
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.15;
    color: var(--color-text-primary);
}

.bottom-cta-sub {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.65;
}

.bottom-cta .btn--primary {
    font-size: var(--font-size-lg);
    padding: 0.9rem 2.25rem;
}


/* ============================================================
   FOOTER
   ============================================================ */

.site-footer {
    border-top: 1px solid var(--color-surface-border);
    padding-block: var(--space-8);
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}

.footer-brand {
    font-weight: 700;
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
}

.footer-copy {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}


/* ============================================================
   REDUCED MOTION
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}