/* ===== Tokens ===== */
:root {
    --bg: #0D0D0D;
    --text: #F0EFE9;
    --text-dim: #888780;
    --accent: #C8FF00;
    --accent-hover: #B8EF00;
    --border: rgba(255, 255, 255, 0.08);
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-bg-hover: rgba(255, 255, 255, 0.06);

    --font-head: 'Syne', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --font-body: 'Syne', system-ui, sans-serif;

    --maxw: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.65;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

.container {
    width: 100%;
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Typography helpers ===== */
.eyebrow {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 16px;
}

.section__title {
    font-family: var(--font-head);
    font-size: 32px;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.01em;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 24px;
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.btn:hover { transform: translateY(-1px); }

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

.btn--secondary {
    background: transparent;
    border-color: rgba(255, 255, 255, 0.25);
    color: var(--text);
}
.btn--secondary:hover { border-color: var(--text); background: rgba(255, 255, 255, 0.04); }

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    transition: background 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
    border-bottom: 1px solid transparent;
}
.nav.scrolled {
    background: rgba(13, 13, 13, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom-color: var(--border);
}
.nav__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}
.nav__logo {
    display: inline-flex;
    align-items: center;
    font-family: var(--font-head);
    font-weight: 800;
    font-size: 18px;
    letter-spacing: -0.01em;
}
.nav__logo-img { height: 30px; width: auto; display: block; }
.nav__links {
    display: flex;
    align-items: center;
    gap: 28px;
}
.nav__links a {
    font-size: 14px;
    color: var(--text-dim);
    transition: color 0.2s ease;
}
.nav__links a:hover { color: var(--text); }
.nav__cta { color: var(--bg); }
.nav__cta:hover { color: var(--bg); }

.nav__burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}
.nav__burger span {
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav__burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.open span:nth-child(2) { opacity: 0; }
.nav__burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
}
.hero__title {
    font-family: var(--font-head);
    font-size: 56px;
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.02em;
    margin: 8px 0 28px;
}
.hero__title-accent { color: var(--text); opacity: 0.55; }
.hero__subtitle {
    max-width: 620px;
    font-size: 18px;
    color: var(--text-dim);
    margin-bottom: 36px;
}
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ===== Sections ===== */
.section { padding: 100px 0; border-top: 1px solid var(--border); }
.section__head { margin-bottom: 48px; }
.section__lead {
    max-width: 640px;
    margin-top: 16px;
    font-size: 17px;
    color: var(--text-dim);
}

/* ===== About ===== */
.about__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}
.about__title { font-size: 32px; }
.about__body p { font-size: 17px; color: var(--text-dim); }

/* ===== Grids ===== */
.grid { display: grid; gap: 16px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

/* ===== Cards ===== */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.card:hover {
    background: var(--card-bg-hover);
    border-color: rgba(255, 255, 255, 0.14);
    transform: translateY(-2px);
}
.card__number {
    display: block;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--accent);
    margin-bottom: 18px;
}
.card__icon {
    font-size: 28px;
    color: var(--accent);
    margin-bottom: 16px;
    display: block;
}
.card__tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 12px;
}
.card__title {
    font-family: var(--font-head);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}
.card__desc { font-size: 14px; color: var(--text-dim); line-height: 1.6; }

/* ===== Use cases ===== */
.usecase {
    display: flex;
    flex-direction: column;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 26px 24px;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.usecase:hover {
    background: var(--card-bg-hover);
    border-color: rgba(255, 255, 255, 0.14);
    transform: translateY(-2px);
}
.usecase__icon { font-size: 28px; color: var(--accent); display: block; margin-bottom: 16px; }
.usecase__tag {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 10px;
}
.usecase__title {
    font-family: var(--font-head);
    font-size: 19px;
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: 12px;
}
.usecase__process {
    font-size: 14px;
    color: var(--text-dim);
    line-height: 1.6;
    margin-bottom: 20px;
    flex-grow: 1;
}
.usecase__benefit {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.45;
    color: var(--accent);
}
.usecase__benefit .ti { flex-shrink: 0; font-size: 18px; margin-top: 1px; }

/* ===== Process ===== */
.step {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    position: relative;
    transition: background 0.2s ease, transform 0.2s ease;
}
.step:hover { background: var(--card-bg-hover); transform: translateY(-2px); }
.step__icon { font-size: 26px; color: var(--accent); display: block; margin-bottom: 18px; }
.step__number {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-dim);
    position: absolute;
    top: 24px; right: 24px;
}

/* ===== Contact ===== */
.contact__inner { text-align: center; max-width: 720px; margin: 0 auto; }
.contact__title {
    font-family: var(--font-head);
    font-size: 40px;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: 18px;
}
.contact__subtitle { font-size: 18px; color: var(--text-dim); margin-bottom: 32px; }
.contact__actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ===== Footer ===== */
.footer { border-top: 1px solid var(--border); padding: 32px 0; }
.footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}
.footer__logo { display: inline-flex; align-items: center; font-family: var(--font-head); font-weight: 700; }
.footer__logo-img { height: 24px; width: auto; display: block; }
.footer__copy { font-family: var(--font-mono); font-size: 12px; color: var(--text-dim); }

/* ===== Reveal animation ===== */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .nav__links {
        position: fixed;
        top: 68px; left: 0; right: 0;
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
        background: rgba(13, 13, 13, 0.97);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border);
        padding: 20px 24px 28px;
        transform: translateY(-130%);
        transition: transform 0.3s ease;
    }
    .nav__links.open { transform: translateY(0); }
    .nav__links a { padding: 10px 0; font-size: 16px; }
    .nav__cta { margin-top: 8px; }
    .nav__burger { display: flex; }

    .hero__title { font-size: 36px; }
    .hero__subtitle { font-size: 16px; }

    .section { padding: 64px 0; }
    .about__grid { grid-template-columns: 1fr; gap: 24px; }
    .grid--3, .grid--4 { grid-template-columns: 1fr; }
    .contact__title { font-size: 30px; }
    .step__number { position: static; display: block; margin-bottom: 6px; }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .grid--4 { grid-template-columns: repeat(2, 1fr); }
    .grid--3 { grid-template-columns: repeat(2, 1fr); }
}