/* TilePlan 3D — landing page.
   "Blueprint" palette (shared with the app): drawing paper, night ink, project blue for actions,
   cut orange only for cuts. */
:root {
  --tile: #f3f5f8;
  --tile-2: #e6ebf2;
  --grout: #d3dbe6;
  --slate: #0e1b2c;
  --slate-soft: #5a6778;
  --glaze: #1f4fd1;
  --glaze-deep: #183fa8;
  --glaze-soft: #dce5fb;
  --chalk: #1f4fd1;
  --cut: #e8590c;
  --narrow: #a86a12;
  --sliver: #c62828;
  --display: "Space Grotesk", Bahnschrift, "DIN Alternate", "DIN Next", "Roboto Condensed", "Arial Narrow", system-ui, sans-serif;
  --body: "Space Grotesk", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  --radius: 8px;
  color-scheme: light;
}

* { 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;
  background: var(--tile);
  color: var(--slate);
  font: 17px/1.6 var(--body);
}
a { color: var(--glaze); text-underline-offset: 3px; }
a:hover { color: var(--glaze-deep); }
:focus-visible { outline: 3px solid var(--chalk); outline-offset: 2px; border-radius: 2px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }

h1, h2, h3 { font-family: var(--display); font-weight: 600; letter-spacing: -0.005em; line-height: 1.12; margin: 0; }
h1 { font-size: clamp(2.2rem, 1.4rem + 3.6vw, 3.9rem); font-stretch: 85%; max-width: 15ch; }
h2 { font-size: clamp(1.7rem, 1.3rem + 1.6vw, 2.4rem); font-stretch: 88%; margin-bottom: 1.4rem; max-width: 22ch; }
h3 { font-size: 1.2rem; margin-bottom: 0.35rem; }
p { margin: 0 0 1rem; max-width: 62ch; }

/* Header */
.top { border-bottom: 1px solid var(--grout); background: var(--tile); position: sticky; top: 0; z-index: 10; }
.top-row { display: flex; align-items: center; gap: 18px; min-height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-family: var(--display); font-weight: 700; font-size: 1.2rem; color: var(--slate); text-decoration: none; }
.logo-mark { width: 28px; height: 28px; fill: var(--glaze); }
.logo-mark .cut { fill: var(--cut); }
.nav { display: flex; gap: 22px; margin-left: auto; }
.nav a { color: var(--slate-soft); text-decoration: none; font-size: 0.95rem; }
.nav a:hover { color: var(--slate); text-decoration: underline; }
.lang select { font: inherit; font-size: 0.9rem; color: var(--slate); background: var(--tile); border: 1px solid var(--grout); border-radius: var(--radius); padding: 6px 8px; }
@media (max-width: 860px) { .nav { display: none; } .lang { margin-left: auto; } }
@media (max-width: 420px) { .brand span { display: none; } }

/* Buttons */
.btn {
  display: inline-block; font: 600 1rem/1 var(--body); text-decoration: none; cursor: pointer;
  background: var(--glaze); color: #fff; border: 1px solid var(--glaze); border-radius: var(--radius);
  padding: 14px 20px;
}
.btn:hover { background: var(--glaze-deep); color: #fff; }
.btn-small { padding: 9px 14px; font-size: 0.92rem; white-space: nowrap; }
.btn-ghost { background: transparent; color: var(--glaze); }
.btn-ghost:hover { background: var(--glaze-soft); color: var(--glaze-deep); }
.btn-light { background: #fff; color: var(--glaze-deep); border-color: #fff; }
.btn-light:hover { background: var(--glaze-soft); color: var(--glaze-deep); }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin: 1.6rem 0 0.8rem; }

/* Hero: the one bold element is the live layout plan. */
.hero {
  padding: clamp(36px, 6vw, 80px) 0;
  background-color: var(--tile);
  background-image:
    linear-gradient(#dbe3f0 1px, transparent 1px),
    linear-gradient(90deg, #dbe3f0 1px, transparent 1px);
  background-size: 60px 60px;
  background-position: -1px -1px;
}
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: clamp(28px, 5vw, 64px); align-items: center; }
.hero-text { background: var(--tile); padding: 8px 0; box-shadow: 0 0 0 16px var(--tile); }
.lead { font-size: 1.15rem; color: var(--slate-soft); margin-top: 1.2rem; }
.note { font-size: 0.92rem; color: var(--slate-soft); }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } }

.demo { margin: 0; background: #fff; border: 1px solid var(--grout); border-radius: 10px; padding: 14px; }
.demo-plan { display: block; width: 100%; height: auto; }
.demo figcaption { padding: 6px 4px 0; }
.demo-label { display: block; font-weight: 600; font-size: 0.95rem; margin: 6px 0; }
.demo input[type="range"] { width: 100%; accent-color: var(--chalk); height: 28px; }
.demo-readout { font-size: 0.95rem; margin: 6px 0 2px; }
.demo-readout b { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.demo-hint { font-size: 0.85rem; color: var(--slate-soft); margin: 0; }
.swatch { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 5px; vertical-align: 0; }

/* Bands */
.band { padding: clamp(48px, 7vw, 96px) 0; }
.band-tinted { background: var(--tile-2); border-block: 1px solid var(--grout); }
.band-glaze { background: var(--slate); color: #dfe6f0; }
.band-glaze h2, .band-glaze h3 { color: #fff; }
.band-glaze a:not(.btn) { color: #fff; }

/* How: a real sequence, so it is numbered. */
.steps { list-style: none; counter-reset: step; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; }
.steps li { counter-increment: step; border-top: 3px solid var(--slate); padding-top: 18px; }
.steps li::before { content: counter(step, decimal-leading-zero); display: block; font: 600 2.2rem/1 var(--mono); color: var(--glaze); margin-bottom: 10px; }
@media (max-width: 820px) { .steps { grid-template-columns: 1fr; } }

/* Who: three audiences, each with a small tile glyph. */
.who { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; }
.who-icon { display: block; width: 44px; height: 44px; margin-bottom: 14px; }
@media (max-width: 820px) { .who { grid-template-columns: 1fr; gap: 28px; } }

/* Features: two quiet columns. */
.feats { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px 48px; }
.feats li { padding-left: 18px; border-left: 3px solid var(--grout); }
.feats p { color: var(--slate-soft); margin: 0; }
@media (max-width: 720px) { .feats { grid-template-columns: 1fr; } }

/* Partners */
.partners { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 56px; }
.points { padding-left: 1.2em; margin: 0 0 0.5rem; }
.points li { margin-bottom: 0.4rem; }
.or { font-size: 0.95rem; }
.soon { border: 1px solid rgba(255, 255, 255, 0.28); border-radius: 10px; padding: 22px; align-self: start; }
.soon ul { margin: 10px 0 0; padding-left: 1.2em; }
.soon li { margin-bottom: 0.35rem; }
@media (max-width: 820px) { .partners { grid-template-columns: 1fr; gap: 28px; } }

/* Newsletter */
.news { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 48px; align-items: start; }
.form { display: grid; gap: 14px; background: #fff; border: 1px solid var(--grout); border-radius: 10px; padding: 22px; }
.form label { display: grid; gap: 6px; font-weight: 600; font-size: 0.95rem; }
.form input[type="email"], .form input[type="text"], .form select {
  font: 400 1rem var(--body); color: var(--slate); background: var(--tile); border: 1px solid var(--grout); border-radius: var(--radius); padding: 12px;
}
.form .check { grid-template-columns: auto 1fr; align-items: start; font-weight: 400; font-size: 0.9rem; color: var(--slate-soft); }
.form .check input { width: 20px; height: 20px; margin: 2px 0 0; accent-color: var(--glaze); }
.form .hp { position: absolute; left: -9999px; }
.form button { justify-self: start; }
.form button[disabled] { opacity: 0.6; cursor: progress; }
.form-msg { margin: 0; font-size: 0.95rem; min-height: 1.5em; }
.form-msg.ok { color: var(--glaze-deep); font-weight: 600; }
.form-msg.err { color: var(--sliver); }
@media (max-width: 820px) { .news { grid-template-columns: 1fr; gap: 20px; } }

/* Text pages */
.prose { padding: 48px 0 72px; max-width: 70ch; }
.prose h1 { font-size: 2.4rem; margin-bottom: 1.4rem; }
.prose h2 { font-size: 1.3rem; margin: 1.8rem 0 0.5rem; }

/* Footer */
.foot { border-top: 1px solid var(--grout); padding: 28px 0; font-size: 0.92rem; color: var(--slate-soft); }
.foot-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 26px; }
.brand-foot { font-size: 1rem; }
.brand-foot .logo-mark { width: 22px; height: 22px; }
.foot-year { margin-left: auto; }