/* =============================================================================
   klarsend.com — homepage styles.
   Tokens mirror web/src/styles/tokens.scss in the app repo (navy neutrals,
   send-blue brand, clear-cyan accent). Typography, spacing, radii and shadows
   follow the shared application tokens used by Send and Watch. Light mode only,
   no JS and no third-party assets.
   ============================================================================= */

@font-face { font-family: 'Inter'; font-style: normal; font-display: swap; font-weight: 400; src: url(/fonts/inter-latin-400-normal.woff2) format('woff2'); }
@font-face { font-family: 'Inter'; font-style: normal; font-display: swap; font-weight: 500; src: url(/fonts/inter-latin-500-normal.woff2) format('woff2'); }
@font-face { font-family: 'Inter'; font-style: normal; font-display: swap; font-weight: 600; src: url(/fonts/inter-latin-600-normal.woff2) format('woff2'); }
@font-face { font-family: 'Inter'; font-style: normal; font-display: swap; font-weight: 700; src: url(/fonts/inter-latin-700-normal.woff2) format('woff2'); }
@font-face { font-family: 'Inter'; font-style: normal; font-display: swap; font-weight: 800; src: url(/fonts/inter-latin-800-normal.woff2) format('woff2'); }
@font-face { font-family: 'JetBrains Mono'; font-style: normal; font-display: swap; font-weight: 400; src: url(/fonts/jetbrains-mono-latin-400-normal.woff2) format('woff2'); }

:root {
  --ks-neutral-0: #ffffff;
  --ks-neutral-50: #f4f6fb;
  --ks-neutral-100: #edf1f8;
  --ks-neutral-200: #e3e8f2;
  --ks-neutral-300: #cfd6e4;
  --ks-neutral-500: #7c89a3;
  --ks-neutral-600: #5a6b85;
  --ks-neutral-700: #3a4763;
  --ks-neutral-800: #24304c;
  --ks-neutral-900: #14203a;

  --ks-brand-50: #eaf1ff;
  --ks-brand-100: #d6e4ff;
  --ks-brand-500: #2c6bff;
  --ks-brand-600: #1f55e0;
  --ks-brand-700: #1a46bc;

  --ks-accent-100: #e6f7fc;
  --ks-accent-400: #58c8e8;
  --ks-accent-600: #2aa6cb;

  --ks-success: #3f7d5c;
  --ks-success-bg: #edf5f0;
  --ks-warning: #a9782f;
  --ks-warning-bg: #fbf3e6;

  --canvas: var(--ks-neutral-50);
  --surface: var(--ks-neutral-0);
  --border: var(--ks-neutral-200);
  --text: var(--ks-neutral-900);
  --text-muted: var(--ks-neutral-600);
  --text-subtle: var(--ks-neutral-500);
  --brand: var(--ks-brand-500);
  --brand-hover: var(--ks-brand-600);
  --accent: var(--ks-accent-400);

  /* Exact stacks used by Send's public landing page. */
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Code", Consolas, Menlo, monospace;

  --radius: 12px;
  --radius-lg: 16px;
  --shadow: 0 2px 4px rgba(27, 34, 44, 0.06), 0 4px 12px rgba(27, 34, 44, 0.06);
  --focus: 0 0 0 3px color-mix(in srgb, var(--brand) 35%, transparent);

  color-scheme: light;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  color: var(--text);
  background: var(--canvas);
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand); text-decoration: none; }
a:hover { color: var(--brand-hover); }
a:focus-visible, .btn:focus-visible { outline: none; box-shadow: var(--focus); border-radius: 6px; }

b, strong { font-weight: 600; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

.skip {
  position: absolute; left: -999px; top: 8px;
  background: var(--surface); color: var(--text); padding: 8px 12px; border-radius: 8px; box-shadow: var(--shadow);
}
.skip:focus { left: 16px; z-index: 100; }

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 18px; border-radius: 8px; font-weight: 600; font-size: 15px;
  border: 1px solid transparent; white-space: nowrap; cursor: pointer;
  transition: background-color 120ms ease, border-color 120ms ease, color 120ms ease, transform 120ms ease;
}
.btn-lg { padding: 13px 22px; font-size: 16px; border-radius: 12px; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-hover); color: #fff; transform: translateY(-1px); }
.btn-ghost { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--ks-neutral-300); color: var(--text); }
.btn-disabled { background: var(--ks-neutral-100); color: var(--text-subtle); border-color: var(--border); cursor: default; }

/* ── Nav ──────────────────────────────────────────────────────────────────── */
nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 56px; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--text); font-weight: 600; font-size: 18px; letter-spacing: -0.011em; }
.brand:hover { color: var(--text); }
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links > a:not(.btn) { color: var(--text-muted); font-weight: 500; font-size: 15px; }
.nav-links > a:not(.btn):hover { color: var(--text); }

/* ── Hero ─────────────────────────────────────────────────────────────────── */
.hero {
  padding: 88px 0 72px;
  background:
    radial-gradient(900px 420px at 15% -10%, var(--ks-brand-50) 0%, transparent 60%),
    radial-gradient(700px 380px at 95% 10%, var(--ks-accent-100) 0%, transparent 55%),
    var(--canvas);
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px; border-radius: 999px;
  background: var(--ks-brand-50); border: 1px solid var(--ks-brand-100);
  color: var(--brand); font-family: var(--font-mono); font-size: 12px; font-weight: 600; letter-spacing: 0.06em;
}
h1 {
  margin: 22px 0 18px; max-width: 18ch;
  font-size: clamp(2.1rem, 5.2vw, 3.4rem); line-height: 1.08; letter-spacing: -0.03em; font-weight: 800;
}
.hl { color: var(--brand); }
.sub { max-width: 60ch; font-size: 1.15rem; line-height: 1.6; color: var(--text-muted); margin: 0 0 28px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-note { margin: 18px 0 0; font-size: 14px; color: var(--text-subtle); }

/* ── Sections ─────────────────────────────────────────────────────────────── */
section { padding: 72px 0; }
.kicker {
  margin: 0 0 10px; font-size: 13px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ks-accent-600);
}
h2 { margin: 0 0 14px; font-size: clamp(1.5rem, 3vw, 2.1rem); line-height: 1.2; letter-spacing: -0.025em; font-weight: 700; max-width: 30ch; }
.lede { max-width: 66ch; color: var(--text-muted); font-size: 1.05rem; margin: 0 0 32px; }

/* ── Products ─────────────────────────────────────────────────────────────── */
#products { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.products { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 36px; }
.product {
  position: relative; display: flex; flex-direction: column; gap: 14px;
  padding: 28px; border-radius: var(--radius-lg); background: var(--canvas); border: 1px solid var(--border);
}
.product.live { border-color: var(--ks-brand-100); box-shadow: var(--shadow); }
.product.soon { background: var(--ks-neutral-50); }
.product-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; letter-spacing: 0.02em;
}
.badge-live { background: var(--ks-success-bg); color: var(--ks-success); }
.badge-soon { background: var(--ks-warning-bg); color: var(--ks-warning); }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ks-success); }
.host { font-family: var(--font-mono); font-size: 13px; color: var(--text-subtle); }
.product h3 { margin: 4px 0 0; font-size: 1.6rem; letter-spacing: -0.02em; font-weight: 500; }
.product h3 b { font-weight: 700; }
.product.soon h3 { color: var(--ks-neutral-700); }
.tagline { margin: 0; font-size: 1.05rem; color: var(--text); }
.features { list-style: none; margin: 4px 0 0; padding: 0; display: grid; gap: 10px; color: var(--text-muted); font-size: 15px; }
.features li { display: flex; gap: 10px; align-items: flex-start; }
.features .m { color: var(--brand); font-weight: 700; flex: 0 0 auto; line-height: 1.5; }
.product.soon .features .m { color: var(--ks-accent-600); }
.product-cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: auto; padding-top: 8px; }

/* ── Why ──────────────────────────────────────────────────────────────────── */
.why-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.why-card { padding: 22px 24px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border); }
.why-card h3 { margin: 0 0 8px; font-size: 1.05rem; letter-spacing: -0.01em; }
.why-card p { margin: 0; color: var(--text-muted); font-size: 15px; }

/* ── Footer ───────────────────────────────────────────────────────────────── */
footer { background: #0e1830; color: var(--ks-neutral-300); padding: 48px 0 24px; }
footer .brand { color: #fff; }
footer .brand:hover { color: #fff; }
footer a { color: var(--ks-neutral-300); }
footer a:hover { color: #fff; }
.foot-inner { display: flex; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.foot-brand p { margin: 14px 0 0; font-size: 14px; color: var(--ks-neutral-500); }
.foot-brand p a { color: var(--ks-neutral-300); }
.foot-cols { display: flex; gap: 56px; }
.foot-cols h4 { margin: 0 0 10px; font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ks-neutral-500); }
.foot-cols a { display: block; font-size: 14px; margin-bottom: 8px; }
.foot-legal {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  margin-top: 36px; padding-top: 18px; border-top: 1px solid var(--ks-neutral-800);
  font-size: 13px; color: var(--ks-neutral-500);
}

/* ── 404 ──────────────────────────────────────────────────────────────────── */
.nf { min-height: 60vh; display: grid; place-items: center; text-align: center; padding: 64px 24px; }
.nf h1 { max-width: none; margin-bottom: 10px; }
.nf p { color: var(--text-muted); margin: 0 0 24px; }

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 820px) {
  .products, .why-grid { grid-template-columns: 1fr; }
  .hero { padding: 64px 0 56px; }
  section { padding: 56px 0; }
}
@media (max-width: 640px) {
  .nav-links > a:not(.btn) { display: none; }
  .nav-links .btn { padding: 8px 14px; font-size: 14px; }
  .hero-cta .btn, .product-cta .btn { width: 100%; }
  .foot-cols { gap: 32px; }
}