/* ThatURL, LLC — company site styles.
   No build step, no third-party requests. Light/dark follow the OS setting. */

:root {
  color-scheme: light dark;

  --bg: #f6f5f1;
  --surface: #ffffff;
  --surface-2: #efede7;
  --ink: #15171c;
  --ink-2: #464b56;
  --ink-3: #6a6f7b;
  --line: #e1ded5;
  --line-strong: #cfcbc0;
  --link: #1d4ed8;
  --link-hover: #163da8;
  --accent-soft: #e5ebfc;
  --mark-bg: #15171c;
  --mark-fg: #ffffff;
  --mark-dot: #3b6cf6;
  --shadow: 0 1px 2px rgb(21 23 28 / 0.04), 0 8px 24px -12px rgb(21 23 28 / 0.12);

  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", "Segoe UI Mono", Menlo, Consolas, monospace;

  --max: 1120px;
  --gutter: clamp(16px, 4vw, 32px);
  --radius: 14px;
  --radius-sm: 8px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1014;
    --surface: #15181e;
    --surface-2: #1b1f27;
    --ink: #eef0f4;
    --ink-2: #b4bac6;
    --ink-3: #8b92a0;
    --line: #262b35;
    --line-strong: #343a46;
    --link: #8db0ff;
    --link-hover: #b3caff;
    --accent-soft: #182240;
    --mark-bg: #eef0f4;
    --mark-fg: #0e1014;
    --mark-dot: #3b6cf6;
    --shadow: 0 1px 2px rgb(0 0 0 / 0.3), 0 12px 32px -16px rgb(0 0 0 / 0.6);
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }

a {
  color: var(--link);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}
a:hover { color: var(--link-hover); text-decoration-thickness: 2px; }

:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 3px;
  border-radius: 4px;
}

h1, h2, h3 {
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.12;
  text-wrap: balance;
}

p { margin: 0; text-wrap: pretty; }

.wrap {
  width: 100%;
  max-width: calc(var(--max) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -48px;
  z-index: 100;
  padding: 10px 14px;
  background: var(--ink);
  color: var(--bg);
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
}
.skip-link:focus { top: 12px; color: var(--bg); }

.mono { font-family: var(--font-mono); font-size: 0.92em; letter-spacing: -0.01em; }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled,
.site-header--solid { border-bottom-color: var(--line); }

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
}
.brand:hover { color: var(--ink); }
.brand .mark { width: 30px; height: 30px; flex: none; }

.mark-bg { fill: var(--mark-bg); }
.mark-slash { stroke: var(--mark-fg); }
.mark-dot { fill: var(--mark-dot); }

.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav a {
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--ink-2);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
}
.site-nav a:hover { color: var(--ink); background: var(--surface-2); }
.site-nav .nav-cta {
  margin-left: 6px;
  color: var(--bg);
  background: var(--ink);
}
.site-nav .nav-cta:hover { color: var(--bg); background: var(--ink-2); }

@media (max-width: 720px) {
  .site-nav a:not(.nav-cta) { display: none; }
}

/* ---------- Hero ---------- */

.hero { padding: clamp(48px, 9vw, 112px) 0 clamp(56px, 8vw, 96px); }
.hero .wrap {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(32px, 6vw, 72px);
  align-items: center;
}
@media (max-width: 900px) {
  .hero .wrap { grid-template-columns: minmax(0, 1fr); }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
}
.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mark-dot);
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.25rem);
  letter-spacing: -0.04em;
  line-height: 1.02;
}
.hero h1 .u {
  text-decoration: underline;
  text-decoration-color: var(--link);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.12em;
}

.lede {
  margin-top: 24px;
  max-width: 34em;
  color: var(--ink-2);
  font-size: clamp(1.0625rem, 1.6vw, 1.1875rem);
}

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink);
  font-weight: 600;
  font-size: 0.975rem;
  text-decoration: none;
  transition: background-color 0.15s, border-color 0.15s, transform 0.15s;
}
.button:hover { color: var(--ink); border-color: var(--ink-3); text-decoration: none; }
.button:active { transform: translateY(1px); }
.button--primary { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.button--primary:hover { background: var(--ink-2); border-color: var(--ink-2); color: var(--bg); }

/* Address-bar card */

.addressbar {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.addressbar-top {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-2);
}
.dots { display: flex; gap: 6px; flex: none; }
.dots span { width: 10px; height: 10px; border-radius: 50%; background: var(--line-strong); }
.url-field {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 0;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.url-field svg { width: 12px; height: 12px; flex: none; color: var(--ink-3); }
.url-field b { color: var(--ink); font-weight: 600; }

.links { list-style: none; margin: 0; padding: 6px; }
.links a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 4px 14px;
  align-items: center;
  padding: 14px 12px;
  border-radius: 10px;
  color: var(--ink);
  text-decoration: none;
}
.links a:hover { background: var(--surface-2); color: var(--ink); }
.links a:hover .go { color: var(--link); transform: translateX(2px); }
.links .badge { grid-row: span 2; }
.links .host {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--link);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.links .desc { grid-column: 2; color: var(--ink-3); font-size: 0.9rem; line-height: 1.4; }
.links .go {
  grid-row: 1 / span 2;
  grid-column: 3;
  color: var(--ink-3);
  transition: transform 0.15s, color 0.15s;
}
.links li + li { border-top: 1px dashed var(--line); }

.badge {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--link);
  font-weight: 800;
  font-size: 0.875rem;
  letter-spacing: -0.02em;
  flex: none;
}

/* ---------- Sections ---------- */

.section { padding: clamp(56px, 8vw, 104px) 0; }
.section + .section { border-top: 1px solid var(--line); }
.section--tint { background: var(--surface-2); }

.section-head {
  display: grid;
  gap: 14px;
  max-width: 44em;
  margin-bottom: clamp(32px, 5vw, 56px);
}
.section-head--tight { margin-bottom: 24px; }
.section-head .kicker {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
}
.section-head h2 { font-size: clamp(1.875rem, 3.6vw, 2.75rem); letter-spacing: -0.035em; }
.section-head p { color: var(--ink-2); font-size: 1.0625rem; }

/* Products */

.products {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
@media (max-width: 900px) {
  .products { grid-template-columns: minmax(0, 1fr); }
}

.product {
  display: flex;
  flex-direction: column;
  padding: clamp(22px, 3vw, 32px);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.product-head { display: flex; align-items: center; gap: 14px; }
.product-head .badge { width: 48px; height: 48px; font-size: 1rem; border-radius: 12px; }
.product-head h3 { font-size: 1.5rem; letter-spacing: -0.03em; }
.product-head .host { color: var(--ink-3); font-family: var(--font-mono); font-size: 0.8125rem; }

.product .tagline { margin-top: 22px; font-size: 1.1875rem; font-weight: 600; letter-spacing: -0.015em; }
.product .summary { margin-top: 10px; color: var(--ink-2); }

.features { list-style: none; margin: 24px 0 0; padding: 0; border-top: 1px solid var(--line); }
.features li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2px 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.features strong { font-weight: 650; }
.features p { grid-column: 1; color: var(--ink-3); font-size: 0.9375rem; line-height: 1.5; }
.chip {
  grid-column: 2;
  grid-row: 1;
  align-self: start;
  padding: 2px 10px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  color: var(--ink-2);
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
}
.chip--free { border-color: transparent; background: var(--accent-soft); color: var(--link); }

.fine-print { margin-top: 18px; color: var(--ink-3); font-size: 0.8125rem; line-height: 1.55; }

.product-foot { margin-top: auto; padding-top: 24px; }
.product-foot a { font-weight: 600; }

/* Approach */

.principles {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}
@media (max-width: 1000px) { .principles { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .principles { grid-template-columns: minmax(0, 1fr); } }

.principles li {
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.principles .num { color: var(--link); font-family: var(--font-mono); font-size: 0.8125rem; font-weight: 600; }
.principles h3 { margin-top: 14px; font-size: 1.1875rem; letter-spacing: -0.02em; }
.principles p { margin-top: 8px; color: var(--ink-2); font-size: 0.9625rem; }

/* Company */

.company {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(32px, 6vw, 72px);
  align-items: start;
}
@media (max-width: 900px) { .company { grid-template-columns: minmax(0, 1fr); } }

.company-copy p + p { margin-top: 16px; }
.company-copy p { color: var(--ink-2); }

.facts {
  margin: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.facts div {
  display: grid;
  grid-template-columns: 11em minmax(0, 1fr);
  gap: 16px;
  padding: 14px 20px;
}
.facts div + div { border-top: 1px solid var(--line); }
.facts dt { color: var(--ink-3); font-size: 0.9375rem; }
.facts dd { margin: 0; font-weight: 550; overflow-wrap: anywhere; }
@media (max-width: 480px) {
  .facts div { grid-template-columns: minmax(0, 1fr); gap: 2px; }
}

.callout {
  margin-top: 28px;
  padding: 22px 24px;
  border-radius: var(--radius);
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--link) 22%, transparent);
}
.callout h3 { font-size: 1.0625rem; letter-spacing: -0.01em; }
.callout p { margin-top: 8px; color: var(--ink-2); font-size: 0.975rem; }

/* Contact */

.contact-email {
  display: inline-block;
  margin-bottom: 36px;
  font-size: clamp(1.5rem, 4.4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  overflow-wrap: anywhere;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
@media (max-width: 820px) { .contact-grid { grid-template-columns: minmax(0, 1fr); } }

.contact-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.contact-card h3 { font-size: 1.0625rem; letter-spacing: -0.01em; }
.contact-card p { color: var(--ink-2); font-size: 0.9375rem; }
.contact-card a { margin-top: auto; padding-top: 6px; font-weight: 600; font-size: 0.9375rem; }

.contact-note { margin-top: 28px; color: var(--ink-3); font-size: 0.9375rem; }

/* ---------- Footer ---------- */

.site-footer {
  padding: 56px 0 40px;
  border-top: 1px solid var(--line);
  background: var(--surface-2);
  font-size: 0.9375rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) repeat(2, minmax(0, 1fr));
  gap: 32px;
}
@media (max-width: 720px) { .footer-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } .footer-brand { grid-column: 1 / -1; } }

.footer-brand p { margin-top: 12px; max-width: 24em; color: var(--ink-3); }
.footer-col h2 {
  margin-bottom: 12px;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.footer-col a { color: var(--ink-2); text-decoration: none; }
.footer-col a:hover { color: var(--ink); text-decoration: underline; }

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--ink-3);
  font-size: 0.8125rem;
}

/* ---------- Document pages (privacy, terms) ---------- */

.doc { padding: clamp(40px, 7vw, 88px) 0 clamp(56px, 8vw, 104px); }
.doc .wrap { max-width: calc(760px + var(--gutter) * 2); }
.doc h1 { font-size: clamp(2.125rem, 5vw, 3rem); letter-spacing: -0.04em; }
.doc .meta { margin-top: 12px; color: var(--ink-3); font-size: 0.9375rem; }
.doc .intro { margin-top: 24px; color: var(--ink-2); font-size: 1.125rem; }
.doc h2 { margin-top: 44px; font-size: 1.375rem; letter-spacing: -0.02em; }
.doc p, .doc ul { margin-top: 14px; color: var(--ink-2); }
.doc ul { padding-left: 1.25em; }
.doc li + li { margin-top: 6px; }
.doc strong { color: var(--ink); }

.policy-links {
  margin-top: 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.policy-links div {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 16px;
  padding: 14px 20px;
}
.policy-links div + div { border-top: 1px solid var(--line); }
.policy-links span { font-weight: 600; color: var(--ink); }
.policy-links p { margin: 0; display: flex; flex-wrap: wrap; gap: 4px 16px; }

/* ---------- 404 ---------- */

.notfound { padding: clamp(72px, 14vw, 160px) 0; }
.notfound h1 { font-size: clamp(2.5rem, 7vw, 4.5rem); letter-spacing: -0.045em; }
.notfound p { margin-top: 18px; color: var(--ink-2); font-size: 1.125rem; max-width: 32em; }
.notfound .url-field { display: inline-flex; margin-top: 28px; max-width: 100%; }