/* Sonometer marketing site — visual language ported from the app's
   internal design system (colors, type scale, spacing). No frameworks,
   no external requests: IBM Plex Mono is self-hosted below. */

@font-face {
  font-family: "IBM Plex Mono";
  src: url("../fonts/IBMPlexMono-Light.woff2") format("woff2");
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("../fonts/IBMPlexMono-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("../fonts/IBMPlexMono-Medium.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

:root {
  --canvas-bg: #07090b;
  --scaffold-bg: #060809;
  --text-primary: #dfe6e9;
  --text-bright: #eef2f4;
  --primary-fill: rgba(235, 242, 245, 0.92);
  --on-primary-fill: #0b0e11;
  --teal: #7fd4d4;
  --teal-bright: #aef0e8;
  --hairline: rgba(223, 230, 233, 0.1);
  --hairline-faint: rgba(223, 230, 233, 0.06);
  --dim-85: rgba(223, 230, 233, 0.85);
  --dim-65: rgba(223, 230, 233, 0.65);
  --dim-45: rgba(223, 230, 233, 0.45);
  --dim-35: rgba(223, 230, 233, 0.35);
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", "Cascadia Mono",
    "JetBrains Mono", Consolas, "Liberation Mono", Menlo, monospace;
  --max-width: 720px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--canvas-bg);
}

body {
  margin: 0;
  background: var(--canvas-bg);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(127, 212, 212, 0.35);
  transition: border-color 0.15s ease, color 0.15s ease;
}

a:hover,
a:focus-visible {
  color: var(--teal-bright);
  border-bottom-color: var(--teal-bright);
}

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

/* Micro-label: ALL-CAPS, letter-spaced, dim */
.label {
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--dim-45);
}

.label--bright {
  color: var(--dim-65);
}

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

.site-header {
  padding: 28px 0 0;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mark {
  width: 22px;
  height: 22px;
  border-radius: 4px;
  display: block;
  flex: none;
}

.wordmark {
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--dim-85);
}

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

.hero {
  padding: 96px 0 64px;
}

.hero .label {
  margin-bottom: 20px;
}

.hero h1 {
  margin: 0 0 20px;
  font-size: clamp(36px, 9vw, 56px);
  font-weight: 300;
  letter-spacing: 0.01em;
  color: var(--text-bright);
  line-height: 1.08;
}

.hero .tagline {
  margin: 0 0 40px;
  max-width: 46ch;
  font-size: 18px;
  font-weight: 300;
  color: var(--dim-85);
  line-height: 1.55;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  border: 1px solid transparent;
  border-radius: 3px;
  cursor: pointer;
}

.btn-primary {
  background: var(--primary-fill);
  color: var(--on-primary-fill);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--text-bright);
  color: var(--on-primary-fill);
}

.btn-ghost {
  background: transparent;
  color: var(--dim-65);
  border-color: var(--hairline);
  border-bottom-width: 1px;
  letter-spacing: 0.24em;
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  color: var(--text-bright);
  border-color: rgba(223, 230, 233, 0.3);
}

.cta-note {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--dim-35);
}

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

section {
  padding: 56px 0;
  border-top: 1px solid var(--hairline-faint);
}

.section-head {
  margin-bottom: 36px;
}

.section-head h2 {
  margin: 10px 0 0;
  font-size: 22px;
  font-weight: 300;
  color: var(--text-bright);
  letter-spacing: 0.01em;
}

/* ---------- Feature grid ---------- */

.features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--hairline-faint);
  border: 1px solid var(--hairline-faint);
}

.feature {
  background: var(--canvas-bg);
  padding: 24px;
}

.feature .index {
  display: block;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--dim-35);
  margin-bottom: 14px;
}

.feature h3 {
  margin: 0 0 8px;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--text-bright);
}

.feature p {
  margin: 0;
  font-size: 13.5px;
  font-weight: 300;
  color: var(--dim-65);
  line-height: 1.6;
}

/* ---------- Privacy section ---------- */

.privacy-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--hairline-faint);
  border: 1px solid var(--hairline-faint);
}

.privacy-points li {
  background: var(--canvas-bg);
  padding: 18px 20px;
  display: flex;
  gap: 16px;
  align-items: baseline;
  font-size: 13.5px;
  color: var(--dim-85);
  line-height: 1.6;
}

.privacy-points .glyph {
  flex: none;
  color: var(--teal);
  font-size: 13px;
  letter-spacing: 0.1em;
}

.privacy-cta {
  margin-top: 28px;
  font-size: 13px;
  color: var(--dim-65);
}

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

.site-footer {
  padding: 40px 0 64px;
  border-top: 1px solid var(--hairline-faint);
}

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

.site-footer .brand {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--dim-35);
}

.site-footer nav {
  display: flex;
  gap: 24px;
  font-size: 12px;
  letter-spacing: 0.08em;
}

.site-footer nav a {
  border-bottom: none;
  color: var(--dim-45);
}

.site-footer nav a:hover,
.site-footer nav a:focus-visible {
  color: var(--teal-bright);
}

/* ---------- Legal / policy page ---------- */

.legal {
  padding: 96px 0 80px;
}

.legal .label {
  margin-bottom: 16px;
}

.legal h1 {
  margin: 0 0 8px;
  font-size: clamp(28px, 7vw, 38px);
  font-weight: 300;
  color: var(--text-bright);
}

.legal .updated {
  margin: 0 0 48px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--dim-35);
}

.legal h2 {
  margin: 48px 0 14px;
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--dim-65);
  border-top: 1px solid var(--hairline-faint);
  padding-top: 32px;
}

.legal h2:first-of-type {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}

.legal p {
  margin: 0 0 16px;
  font-size: 14.5px;
  font-weight: 300;
  color: var(--dim-85);
  line-height: 1.75;
  max-width: 62ch;
}

.legal ul {
  margin: 0 0 16px;
  padding-left: 20px;
  max-width: 62ch;
}

.legal li {
  font-size: 14.5px;
  font-weight: 300;
  color: var(--dim-85);
  line-height: 1.75;
  margin-bottom: 8px;
}

.legal li strong {
  color: var(--text-bright);
  font-weight: 500;
}

.back-link {
  display: inline-block;
  margin-top: 8px;
}

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

.error-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}

.error-page .code {
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--dim-35);
  margin-bottom: 20px;
}

.error-page h1 {
  font-size: clamp(32px, 8vw, 48px);
  font-weight: 300;
  color: var(--text-bright);
  margin: 0 0 16px;
}

.error-page p {
  color: var(--dim-65);
  font-size: 14px;
  margin: 0 0 32px;
}

/* ---------- Responsive ---------- */

@media (max-width: 560px) {
  .features {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 72px 0 48px;
  }

  section {
    padding: 44px 0;
  }
}

@media (min-width: 720px) {
  .wrap {
    padding: 0 32px;
  }
}