@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

/* ===========================================================================
   chatos — marketing landing page
   Palette: desaturated WhatsApp green accent on an ink / near-white neutral base.
   Theme lock: light page; green is the single accent (incl. dark accent bands).
   =========================================================================== */

:root {
    --ink: #11201a;
    --text: #233029;
    --muted: #5d6f66;
    --bg: #ffffff;
    --bg-soft: #f4f8f5;
    --bg-tint: #eef5f1;
    --line: #e2eae5;
    --accent: #11875b;
    --accent-700: #0c6644;
    --accent-900: #093f2c;
    --accent-soft: #e7f4ee;
    --r: 16px;
    --r-sm: 11px;
    --maxw: 1180px;
    --shadow-sm: 0 6px 18px -10px rgba(16, 50, 36, .28);
    --shadow: 0 30px 70px -36px rgba(13, 60, 40, .45);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: 'Plus Jakarta Sans', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { color: var(--ink); letter-spacing: -.02em; line-height: 1.12; margin: 0; }
img { max-width: 100%; display: block; }

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

/* ── Buttons ──────────────────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    font: inherit; font-weight: 700; white-space: nowrap; cursor: pointer;
    padding: 11px 20px; border-radius: var(--r-sm); border: 1.5px solid transparent;
    transition: transform .12s ease, background .18s ease, color .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.btn:active { transform: translateY(1px); }
.btn--lg { padding: 14px 26px; font-size: 1.02rem; }
.btn--block { width: 100%; }
.btn--solid { background: var(--accent); color: #fff; box-shadow: 0 14px 28px -14px rgba(17,135,91,.75); }
.btn--solid:hover { background: var(--accent-700); }
.btn--line { background: #fff; color: var(--accent-700); border-color: var(--accent); }
.btn--line:hover { background: var(--accent-soft); }
.btn--ghost { color: var(--text); }
.btn--ghost:hover { color: var(--accent-700); }
.btn--white { background: #fff; color: var(--accent-700); }
.btn--white:hover { background: #eafaf2; }

/* ── Nav ──────────────────────────────────────────────────────── */
.nav {
    position: sticky; top: 0; z-index: 50;
    background: rgba(255,255,255,.82);
    backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--line);
}
.nav__inner { height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.nav__brand img { height: 30px; }
.nav__links { display: flex; align-items: center; gap: 28px; font-weight: 600; color: var(--text); }
.nav__links a:hover { color: var(--accent-700); }
.nav__actions { display: flex; align-items: center; gap: 12px; }

/* ── Hero ─────────────────────────────────────────────────────── */
.hero {
    background:
        radial-gradient(60% 60% at 88% 6%, var(--accent-soft), transparent 60%),
        radial-gradient(50% 50% at 0% 100%, var(--bg-tint), transparent 60%);
    padding: clamp(48px, 7vw, 96px) 0 clamp(56px, 8vw, 104px);
}
.hero__grid {
    display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center;
}
.pill {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: .82rem; font-weight: 700; color: var(--accent-700);
    background: var(--accent-soft); border: 1px solid #cfe9dd;
    padding: 6px 13px; border-radius: 999px; margin-bottom: 22px;
}
.pill__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
.hero__copy h1 { font-size: clamp(2.1rem, 4.4vw, 3.4rem); font-weight: 800; }
.hero__sub { font-size: clamp(1.05rem, 1.5vw, 1.22rem); color: var(--muted); margin: 20px 0 30px; max-width: 30ch; }
.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero__note { margin: 22px 0 0; color: var(--muted); font-size: .92rem; font-weight: 500; }
.hero__note i { color: var(--accent); }

/* Chat preview (the product's real surface, not a fake dashboard) */
.hero__visual { position: relative; }
.chat {
    width: 100%; max-width: 360px; margin: 0 auto;
    background: #fff; border: 1px solid var(--line); border-radius: 24px;
    box-shadow: var(--shadow); overflow: hidden;
}
.chat__bar { display: flex; align-items: center; gap: 12px; padding: 14px 16px; background: var(--accent-700); color: #fff; }
.chat__avatar { width: 38px; height: 38px; border-radius: 50%; background: #fff; color: var(--accent-700); font-weight: 800; display: grid; place-items: center; }
.chat__who { display: flex; flex-direction: column; line-height: 1.2; }
.chat__who strong { font-size: .95rem; }
.chat__who span { font-size: .76rem; color: #b9e6d2; }
.chat__more { margin-left: auto; opacity: .8; }
.chat__body { padding: 18px 14px; display: flex; flex-direction: column; gap: 12px; background: #f3f7f4; min-height: 280px; }
.msg { max-width: 80%; padding: 9px 13px; border-radius: 14px; font-size: .9rem; line-height: 1.4; box-shadow: var(--shadow-sm); }
.msg--in { align-self: flex-start; background: #fff; border-bottom-left-radius: 4px; }
.msg--out { align-self: flex-end; background: #d6f3e2; color: #0c3b28; border-bottom-right-radius: 4px; }
.msg__tag { display: block; margin-top: 5px; font-size: .68rem; font-weight: 700; color: var(--accent-700); opacity: .85; }
.chat__input { display: flex; align-items: center; justify-content: space-between; padding: 13px 16px; color: #93a39b; border-top: 1px solid var(--line); background: #fff; }
.chat__input i { color: var(--accent); }

.float {
    position: absolute; display: inline-flex; align-items: center; gap: 8px;
    background: #fff; color: var(--ink); font-weight: 700; font-size: .82rem;
    padding: 9px 14px; border-radius: 12px; border: 1px solid var(--line); box-shadow: var(--shadow);
}
.float i { color: var(--accent); }
.float--a { top: 18px; left: -6px; }
.float--b { bottom: 30px; right: -10px; }

/* ── Integrations strip ───────────────────────────────────────── */
.logos { padding: 40px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-soft); }
.logos__label { text-align: center; color: var(--muted); font-weight: 600; font-size: .9rem; margin: 0 0 22px; }
.logos__row { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 48px; }
.logos__row img { height: 26px; opacity: .65; transition: opacity .2s ease; filter: saturate(.7); }
.logos__row img:hover { opacity: 1; }

/* ── Section heads ────────────────────────────────────────────── */
.sec__head { max-width: 40ch; margin: 0 auto clamp(34px, 5vw, 52px); text-align: center; }
.sec__head--left { text-align: left; margin-left: 0; }
.sec__head h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); font-weight: 800; }
.sec__sub { color: var(--muted); margin: 14px 0 0; font-size: 1.05rem; }
.eyebrow { display: inline-block; font-size: .8rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--accent-700); margin-bottom: 14px; }

/* ── Features bento ───────────────────────────────────────────── */
.features { padding: clamp(56px, 8vw, 100px) 0; }
.bento { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.cell {
    background: var(--bg); border: 1px solid var(--line); border-radius: var(--r);
    padding: 28px; box-shadow: var(--shadow-sm);
    transition: transform .2s ease, box-shadow .2s ease;
}
.cell:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.cell--lead { grid-row: span 2; background: var(--bg-soft); }
.cell--wide { grid-column: span 2; }
.cell--accent {
    color: #eafaf2;
    background: radial-gradient(120% 100% at 100% 0%, rgba(255,255,255,.10), transparent 55%), linear-gradient(160deg, var(--accent-700), var(--accent-900));
    border-color: transparent;
}
.cell--accent h3 { color: #fff; }
.cell--accent p { color: #c8e8d8; }
.cell__icon { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent-700); font-size: 1.15rem; margin-bottom: 18px; }
.cell__icon--light { background: rgba(255,255,255,.16); color: #fff; }
.cell h3 { font-size: 1.22rem; font-weight: 700; margin-bottom: 10px; }
.cell p { color: var(--muted); margin: 0; }
.cell__list { list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 9px; }
.cell__list--row { grid-template-columns: 1fr 1fr; }
.cell__list li { display: flex; align-items: center; gap: 9px; font-weight: 600; color: var(--text); font-size: .92rem; }
.cell__list i { color: var(--accent); font-size: .8rem; }

/* ── Steps ────────────────────────────────────────────────────── */
.steps { padding: clamp(48px, 7vw, 88px) 0; background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.steps__row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.step { padding: 26px; background: #fff; border: 1px solid var(--line); border-radius: var(--r); }
.step__num { display: inline-block; font-size: 1rem; font-weight: 800; color: var(--accent); background: var(--accent-soft); width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; margin-bottom: 16px; }
.step h3 { font-size: 1.18rem; font-weight: 700; margin-bottom: 8px; }
.step p { color: var(--muted); margin: 0; }

/* ── Pricing ──────────────────────────────────────────────────── */
.pricing { padding: clamp(56px, 8vw, 100px) 0; }
.plans { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; align-items: stretch; }
.plan {
    position: relative; display: flex; flex-direction: column;
    background: #fff; border: 1px solid var(--line); border-radius: var(--r);
    padding: 26px 22px; box-shadow: var(--shadow-sm);
}
.plan--pop { border-color: var(--accent); box-shadow: var(--shadow); transform: translateY(-6px); }
.plan__badge { position: absolute; top: -12px; left: 22px; background: var(--accent); color: #fff; font-size: .74rem; font-weight: 800; letter-spacing: .03em; padding: 5px 11px; border-radius: 999px; }
.plan__name { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; }
.plan__price { display: flex; align-items: baseline; gap: 6px; margin-bottom: 18px; }
.plan__price strong { font-size: 1.85rem; font-weight: 800; color: var(--ink); }
.plan__price span { color: var(--muted); font-size: .9rem; }
.plan__meta { list-style: none; padding: 0 0 16px; margin: 0 0 16px; border-bottom: 1px solid var(--line); display: grid; gap: 8px; }
.plan__meta li { display: flex; align-items: center; gap: 10px; font-weight: 600; color: var(--text); font-size: .9rem; }
.plan__meta i { color: var(--accent-700); width: 16px; text-align: center; }
.plan__feat { list-style: none; padding: 0; margin: 0 0 22px; display: grid; gap: 9px; flex: 1; }
.plan__feat li { display: flex; align-items: center; gap: 9px; color: var(--muted); font-size: .88rem; }
.plan__feat i { color: var(--accent); font-size: .78rem; }

/* ── FAQ ──────────────────────────────────────────────────────── */
.faq { padding: clamp(48px, 7vw, 88px) 0; background: var(--bg-soft); border-top: 1px solid var(--line); }
.faq__grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 48px; align-items: start; }
.faq__list { display: grid; gap: 12px; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: var(--r-sm); padding: 4px 18px; }
.faq summary { cursor: pointer; font-weight: 700; color: var(--ink); padding: 14px 0; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "\002B"; color: var(--accent); font-weight: 800; font-size: 1.3rem; }
.faq details[open] summary::after { content: "\2212"; }
.faq details p { color: var(--muted); margin: 0 0 16px; }

/* ── Final CTA ────────────────────────────────────────────────── */
.cta { padding: clamp(56px, 8vw, 96px) 0; }
.cta__inner {
    text-align: center; color: #eafaf2; border-radius: 28px;
    padding: clamp(40px, 6vw, 72px) 24px;
    background: radial-gradient(80% 120% at 50% 0%, rgba(255,255,255,.12), transparent 60%), linear-gradient(160deg, var(--accent-700), var(--accent-900));
}
.cta__inner h2 { color: #fff; font-size: clamp(1.7rem, 3.2vw, 2.5rem); font-weight: 800; }
.cta__inner p { color: #c8e8d8; margin: 14px 0 28px; font-size: 1.1rem; }

/* ── Footer ───────────────────────────────────────────────────── */
.foot { padding: 56px 0 28px; border-top: 1px solid var(--line); }
.foot__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; }
.foot__brand img { height: 28px; margin-bottom: 12px; }
.foot__brand p { color: var(--muted); margin: 0; max-width: 28ch; }
.foot__col h4 { font-size: .85rem; text-transform: uppercase; letter-spacing: .06em; color: var(--ink); margin-bottom: 14px; }
.foot__col a { display: block; color: var(--muted); padding: 5px 0; font-weight: 500; }
.foot__col a:hover { color: var(--accent-700); }
.foot__base { margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: .85rem; }

/* ── Scroll reveal ────────────────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .6s cubic-bezier(.16,1,.3,1), transform .6s cubic-bezier(.16,1,.3,1); }
.reveal.in { opacity: 1; transform: none; }

/* ── Responsive ───────────────────────────────────────────────── */
@media (max-width: 980px) {
    .nav__links { display: none; }
    .hero__grid { grid-template-columns: 1fr; gap: 40px; }
    .hero__sub { max-width: none; }
    .bento { grid-template-columns: 1fr 1fr; }
    .cell--lead { grid-row: auto; }
    .cell--wide { grid-column: span 2; }
    .plans { grid-template-columns: 1fr 1fr; }
    .plan--pop { transform: none; }
    .faq__grid { grid-template-columns: 1fr; gap: 24px; }
    .faq .sec__head--left { text-align: left; }
}
@media (max-width: 620px) {
    .bento, .steps__row, .plans { grid-template-columns: 1fr; }
    .cell--wide { grid-column: auto; }
    .cell__list--row { grid-template-columns: 1fr; }
    .nav__actions .btn--ghost { display: none; }
    .foot__grid { grid-template-columns: 1fr 1fr; }
    .float { display: none; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; transition: none; }
    .cell, .btn, .logos__row img { transition: none; }
}