/* Kolab master site design system.
   Petrol blue + sun amber on paper, system fonts, heavy headings, pill buttons.
   Per-product accents arrive via --accent / --accent-soft inline on <body>. */

:root {
  --petrol-50: #eff5ff;
  --petrol-100: #dbe8fe;
  --petrol-200: #bfd7fe;
  --petrol-300: #93bbfd;
  --petrol-500: #3b82f6;
  --petrol-600: #2563eb;
  --petrol-700: #1d4ed8;
  --petrol-800: #1e40af;
  --petrol-900: #1e3a8a;
  --petrol-950: #172554;
  --sun-100: #fef3c7;
  --sun-300: #fcd34d;
  --sun-400: #fbbf24;
  --sun-500: #f59e0b;
  --paper: #f8fafc;
  --ink: #0f172a;
  --ink-soft: #475569;
  --ink-faint: #94a3b8;
  --line: #e2e8f0;
  --white: #ffffff;
  --green: #16a34a;
  --accent: var(--petrol-600);
  --accent-ink: var(--petrol-800);
  --accent-soft: var(--petrol-50);
  --radius-lg: 1.5rem;
  --radius-md: 1rem;
  --radius-sm: 0.625rem;
  --shadow-card: 0 1px 2px rgb(15 23 42 / 0.04), 0 8px 24px -12px rgb(15 23 42 / 0.12);
  --shadow-pop: 0 2px 6px rgb(15 23 42 / 0.06), 0 24px 48px -20px rgb(15 23 42 / 0.22);
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, h4 { line-height: 1.15; margin: 0 0 0.5em; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); font-weight: 900; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.3rem); font-weight: 850; }
h3 { font-size: 1.25rem; font-weight: 800; }
h4 { font-size: 1.02rem; font-weight: 750; }
p { margin: 0 0 1em; }
.container { max-width: 76rem; margin: 0 auto; padding: 0 1.25rem; }
.narrow { max-width: 52rem; }
section { padding: 4.5rem 0; }
section.tight { padding: 3rem 0; }
.center { text-align: center; }
.muted { color: var(--ink-soft); }
.faint { color: var(--ink-faint); }
.lead { font-size: 1.15rem; color: var(--ink-soft); }
.small { font-size: 0.85rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgb(248 250 252 / 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-header .bar {
  display: flex; align-items: center; gap: 1rem;
  min-height: 4rem;
}
.brand { display: flex; align-items: center; gap: 0.55rem; text-decoration: none; font-weight: 900; font-size: 1.25rem; color: var(--ink); }
.brand .by { font-size: 0.66rem; font-weight: 650; color: var(--ink-faint); letter-spacing: 0.06em; text-transform: uppercase; margin-top: 0.35rem; }
.nav-main { display: flex; align-items: center; gap: 0.25rem; margin-left: 0.5rem; }
.nav-main > .nav-item > a, .nav-main > .nav-item > button {
  display: inline-flex; align-items: center; gap: 0.3rem;
  font: inherit; font-weight: 650; font-size: 0.93rem; color: var(--ink-soft);
  background: none; border: 0; cursor: pointer;
  padding: 0.5rem 0.75rem; border-radius: 999px; text-decoration: none;
}
.nav-main > .nav-item > a:hover, .nav-main > .nav-item > button:hover { background: var(--petrol-50); color: var(--petrol-800); }
.nav-item { position: relative; }
.nav-item .caret { transition: transform 0.15s; }
.nav-item:hover .caret, .nav-item:focus-within .caret { transform: rotate(180deg); }
.megamenu {
  position: absolute; left: 50%; transform: translateX(-50%) translateY(6px);
  top: 100%; padding-top: 0.6rem;
  opacity: 0; pointer-events: none; transition: opacity 0.15s, transform 0.15s;
}
.nav-item:hover .megamenu, .nav-item:focus-within .megamenu {
  opacity: 1; pointer-events: auto; transform: translateX(-50%) translateY(0);
}
.megamenu .sheet {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-pop); padding: 1.4rem;
  display: grid; gap: 1.4rem;
}
.megamenu.cols-4 .sheet { grid-template-columns: repeat(4, 15rem); }
.megamenu.cols-2 .sheet { grid-template-columns: repeat(2, 16rem); }
.megamenu.cols-1 .sheet { grid-template-columns: 18rem; }
.menu-group h5 {
  margin: 0 0 0.5rem; font-size: 0.72rem; font-weight: 800; letter-spacing: 0.09em;
  text-transform: uppercase; color: var(--ink-faint);
}
.menu-link {
  display: flex; gap: 0.6rem; align-items: flex-start; text-decoration: none;
  padding: 0.45rem 0.55rem; border-radius: var(--radius-sm);
}
.menu-link:hover { background: var(--paper); }
.menu-link .mi {
  flex: none; width: 1.9rem; height: 1.9rem; border-radius: 0.55rem;
  display: grid; place-items: center; color: var(--white);
}
.menu-link .mi svg { width: 1.05rem; height: 1.05rem; }
.menu-link b { display: block; font-size: 0.88rem; font-weight: 750; }
.menu-link span { display: block; font-size: 0.76rem; color: var(--ink-soft); line-height: 1.35; }
.header-cta { margin-left: auto; display: flex; align-items: center; gap: 0.5rem; }
.nav-toggle { display: none; }

/* ---------- Buttons, badges ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.45rem;
  border-radius: 999px; padding: 0.7rem 1.35rem;
  font-weight: 750; font-size: 0.95rem; text-decoration: none; border: 1px solid transparent;
  cursor: pointer; transition: transform 0.1s, box-shadow 0.15s, background 0.15s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--petrol-600); color: var(--white); box-shadow: 0 8px 20px -8px rgb(37 99 235 / 0.55); }
.btn-primary:hover { background: var(--petrol-700); }
.btn-accent { background: var(--accent); color: var(--white); box-shadow: 0 8px 20px -8px color-mix(in srgb, var(--accent) 55%, transparent); }
.btn-accent:hover { filter: brightness(0.93); }
.btn-ghost { background: var(--white); border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--petrol-300); color: var(--petrol-800); }
.btn-sun { background: var(--sun-400); color: var(--petrol-950); }
.btn-sun:hover { background: var(--sun-300); }
.btn-lg { padding: 0.9rem 1.7rem; font-size: 1.02rem; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 0.45rem;
  background: var(--white); border: 1px solid var(--line); border-radius: 999px;
  padding: 0.32rem 0.85rem; font-size: 0.78rem; font-weight: 700; color: var(--ink-soft);
}
.eyebrow .dot { width: 0.5rem; height: 0.5rem; border-radius: 999px; background: var(--accent); }
.pill {
  display: inline-flex; align-items: center; gap: 0.3rem; border-radius: 999px;
  padding: 0.18rem 0.65rem; font-size: 0.72rem; font-weight: 750;
}
.pill-live { background: #dcfce7; color: #15803d; }
.pill-pilot { background: var(--sun-100); color: #92400e; }
.pill-design { background: var(--petrol-100); color: var(--petrol-800); }
.pill-accent { background: var(--accent-soft); color: var(--accent-ink); }

/* ---------- Cards & grids ---------- */
.card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 1.6rem; box-shadow: var(--shadow-card);
}
.grid { display: grid; gap: 1.25rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.product-card {
  display: flex; flex-direction: column; gap: 0.7rem; text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s;
}
.product-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-pop); }
.product-card .head { display: flex; align-items: center; gap: 0.7rem; }
.product-icon {
  flex: none; width: 2.6rem; height: 2.6rem; border-radius: 0.85rem;
  display: grid; place-items: center; color: var(--white);
}
.product-icon svg { width: 1.35rem; height: 1.35rem; }
.product-card h3 { margin: 0; font-size: 1.06rem; }
.product-card .code { font-size: 0.74rem; font-weight: 700; color: var(--ink-faint); }
.product-card p { margin: 0; font-size: 0.87rem; color: var(--ink-soft); }
.product-card .foot { margin-top: auto; display: flex; align-items: center; justify-content: space-between; padding-top: 0.4rem; }
.arrow-link { font-weight: 750; font-size: 0.88rem; color: var(--petrol-700); text-decoration: none; display: inline-flex; gap: 0.3rem; align-items: center; }
.arrow-link:hover { text-decoration: underline; }

/* ---------- Hero ---------- */
.hero { padding: 5rem 0 4rem; }
.hero .kicker { margin-bottom: 1.1rem; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 3rem; align-items: center; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.7rem; margin: 1.6rem 0 1rem; }
.hero-note { font-size: 0.83rem; color: var(--ink-faint); }
.hero-bullets { display: grid; gap: 0.55rem; margin: 1.4rem 0 0; padding: 0; list-style: none; }
.hero-bullets li { display: flex; gap: 0.55rem; align-items: flex-start; font-size: 0.95rem; color: var(--ink-soft); }
.hero-bullets svg { flex: none; width: 1.1rem; height: 1.1rem; color: var(--green); margin-top: 0.2rem; }
.gradient-band {
  background: linear-gradient(160deg, var(--petrol-950), var(--petrol-800));
  color: var(--white);
}
.gradient-band .muted, .gradient-band .lead { color: var(--petrol-200); }

/* ---------- Feature split rows ---------- */
.feature-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 3.5rem; align-items: center;
  padding: 3rem 0;
}
.feature-row:nth-child(even) .feature-copy { order: 2; }
.feature-copy .eyebrow { margin-bottom: 0.9rem; }
.feature-copy ul { padding-left: 1.2rem; color: var(--ink-soft); margin: 0.8rem 0 0; }
.feature-copy ul li { margin-bottom: 0.45rem; }
.mock-shell { border-radius: var(--radius-lg); box-shadow: var(--shadow-pop); overflow: hidden; border: 1px solid var(--line); background: var(--white); }
.mock-shell svg { width: 100%; height: auto; }

/* ---------- Module grid ---------- */
.module-card { display: flex; gap: 0.8rem; align-items: flex-start; padding: 1.1rem 1.2rem; }
.module-card .mi {
  flex: none; width: 2.3rem; height: 2.3rem; border-radius: 0.7rem;
  background: var(--accent-soft); color: var(--accent-ink); display: grid; place-items: center;
}
.module-card .mi svg { width: 1.2rem; height: 1.2rem; }
.module-card h4 { margin: 0 0 0.2rem; }
.module-card p { margin: 0; font-size: 0.84rem; color: var(--ink-soft); }

/* ---------- Stats ---------- */
.stat-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.stat { text-align: center; padding: 1.4rem 1rem; }
.stat b { display: block; font-size: 2rem; font-weight: 900; color: var(--accent-ink); letter-spacing: -0.03em; }
.stat span { font-size: 0.84rem; color: var(--ink-soft); }

/* ---------- Pricing ---------- */
.price-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; align-items: stretch; }
.price-card { display: flex; flex-direction: column; position: relative; }
.price-card.highlight { border-color: var(--petrol-600); border-width: 2px; box-shadow: var(--shadow-pop); }
.price-card .flag {
  position: absolute; top: -0.8rem; left: 50%; transform: translateX(-50%);
  background: var(--petrol-600); color: var(--white); border-radius: 999px;
  font-size: 0.7rem; font-weight: 800; padding: 0.25rem 0.8rem; white-space: nowrap;
}
.price { font-size: 2.3rem; font-weight: 900; letter-spacing: -0.03em; }
.price small { font-size: 0.85rem; font-weight: 650; color: var(--ink-faint); letter-spacing: 0; }
.price-card ul { list-style: none; padding: 0; margin: 1rem 0 1.4rem; display: grid; gap: 0.5rem; }
.price-card ul li { display: flex; gap: 0.5rem; font-size: 0.88rem; color: var(--ink-soft); }
.price-card ul svg { flex: none; width: 1rem; height: 1rem; color: var(--green); margin-top: 0.25rem; }
.price-card .btn { margin-top: auto; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--white); }
table.clean { border-collapse: collapse; width: 100%; min-width: 40rem; font-size: 0.9rem; }
table.clean th, table.clean td { padding: 0.75rem 1rem; text-align: left; border-bottom: 1px solid var(--line); }
table.clean th { background: var(--paper); font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-soft); }
table.clean tr:last-child td { border-bottom: 0; }

/* ---------- FAQ ---------- */
.faq details { border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--white); margin-bottom: 0.7rem; overflow: hidden; }
.faq summary { cursor: pointer; padding: 1rem 1.25rem; font-weight: 750; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-weight: 800; color: var(--ink-faint); }
.faq details[open] summary::after { content: "–"; }
.faq .answer { padding: 0 1.25rem 1.1rem; color: var(--ink-soft); font-size: 0.93rem; }

/* ---------- Use cases / quotes ---------- */
.case-card { display: flex; flex-direction: column; gap: 0.6rem; }
.case-card .who { font-size: 0.78rem; font-weight: 800; color: var(--accent-ink); text-transform: uppercase; letter-spacing: 0.05em; }
.case-card p { margin: 0; font-size: 0.92rem; color: var(--ink-soft); }

/* ---------- Checklist ---------- */
.check-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.6rem; }
.check-list li { display: flex; gap: 0.6rem; align-items: flex-start; color: var(--ink-soft); }
.check-list svg { flex: none; width: 1.15rem; height: 1.15rem; color: var(--green); margin-top: 0.2rem; }

/* ---------- CTA band ---------- */
.cta-band { border-radius: var(--radius-lg); padding: 3.2rem 2.5rem; text-align: center; }
.cta-band h2 { color: var(--white); }
.cta-band p { color: var(--petrol-200); max-width: 38rem; margin: 0 auto 1.6rem; }

/* ---------- Footer ---------- */
.site-footer { background: var(--petrol-950); color: var(--petrol-200); margin-top: 4rem; padding: 3.5rem 0 2rem; font-size: 0.86rem; }
.site-footer a { color: var(--petrol-200); text-decoration: none; }
.site-footer a:hover { color: var(--white); }
.footer-grid { display: grid; grid-template-columns: 1.3fr repeat(4, 1fr); gap: 2rem; margin-bottom: 2.5rem; }
.footer-grid h5 { color: var(--white); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; margin: 0 0 0.8rem; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.45rem; }
.footer-legal { border-top: 1px solid rgb(255 255 255 / 0.12); padding-top: 1.5rem; display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; color: var(--petrol-300); }

/* ---------- Breadcrumb / page hero ---------- */
.crumbs { font-size: 0.8rem; color: var(--ink-faint); margin-bottom: 1rem; }
.crumbs a { color: var(--ink-soft); text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }
.product-hero-icon { width: 3.4rem; height: 3.4rem; border-radius: 1rem; display: grid; place-items: center; color: var(--white); margin-bottom: 1.1rem; }
.product-hero-icon svg { width: 1.8rem; height: 1.8rem; }

/* ---------- Accent helpers ---------- */
.accent-bg { background: var(--accent); }
.accent-soft-bg { background: var(--accent-soft); }
.accent-text { color: var(--accent-ink); }
.soft-band { background: var(--white); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

/* ---------- Responsive ---------- */
@media (max-width: 64rem) {
  .megamenu.cols-4 .sheet { grid-template-columns: repeat(2, 15rem); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .stat-strip { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-grid, .feature-row { grid-template-columns: 1fr; gap: 2rem; }
  .feature-row:nth-child(even) .feature-copy { order: 0; }
  .price-cards { grid-template-columns: 1fr; }
}
@media (max-width: 48rem) {
  .nav-main {
    display: none; position: fixed; inset: 4rem 0 0 0; background: var(--paper);
    flex-direction: column; align-items: stretch; padding: 1rem 1.25rem 3rem;
    overflow-y: auto; gap: 0; z-index: 49; margin: 0;
  }
  .nav-main.open { display: flex; }
  .nav-main > .nav-item > a, .nav-main > .nav-item > button { width: 100%; justify-content: space-between; padding: 0.85rem 0.5rem; border-radius: var(--radius-sm); font-size: 1rem; }
  .megamenu { position: static; transform: none; opacity: 1; pointer-events: auto; padding: 0; display: none; }
  .nav-item.open .megamenu { display: block; }
  .megamenu .sheet, .megamenu.cols-4 .sheet, .megamenu.cols-2 .sheet { grid-template-columns: 1fr; box-shadow: none; border: 0; padding: 0.25rem 0.5rem 1rem; background: transparent; }
  .nav-toggle {
    display: grid; place-items: center; margin-left: auto;
    background: var(--white); border: 1px solid var(--line); border-radius: 999px;
    width: 2.5rem; height: 2.5rem; cursor: pointer;
  }
  .header-cta { margin-left: 0; }
  .header-cta .btn-ghost { display: none; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  section { padding: 3rem 0; }
  .cta-band { padding: 2.4rem 1.4rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
