/* sonensei.ch: shared styles. Dark "Tron" look by default, a light variant
   for people whose system asks for it. Fonts are self-hosted (SIL OFL). */

@font-face {
  font-family: "Orbitron";
  font-style: normal;
  font-weight: 500 900;
  font-display: swap;
  src: url(fonts/orbitron.woff2) format("woff2");
}

@font-face {
  font-family: "Share Tech Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(fonts/share-tech-mono.woff2) format("woff2");
}

:root {
  color-scheme: dark;
  --bg: #030608;
  --bg-elevated: #071018;
  --bg-panel: #060d13;
  --grid: rgba(0, 229, 255, 0.035);
  --border: #0f3d52;
  --border-strong: #1c7fa3;
  --text: #d6faff;
  --text-muted: #8cc5d4;
  --text-faint: #4f8597;
  --accent: #00e5ff;
  --accent-bg: #072832;
  --glow: 0 0 14px rgba(0, 229, 255, 0.45);
  --green: #4dffb8;
  --orange: #ffb347;
  --font-ui: "Orbitron", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "Share Tech Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --radius: 6px;
}

@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;
    --bg: #f3f7f9;
    --bg-elevated: #ffffff;
    --bg-panel: #eaf3f6;
    --grid: rgba(14, 116, 144, 0.05);
    --border: #bcd7e0;
    --border-strong: #0e7490;
    --text: #0b2530;
    --text-muted: #3f6170;
    --text-faint: #6e8d99;
    --accent: #0e7490;
    --accent-bg: #dcedf2;
    --glow: 0 0 0 3px rgba(14, 116, 144, 0.18);
    --green: #0f766e;
    --orange: #b45309;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 32px 32px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

a { color: var(--accent); text-underline-offset: 0.15em; }

img { max-width: 100%; height: auto; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.wrap {
  max-width: 68rem;
  margin: 0 auto;
  padding: 0 1rem;
}

/* ---------- header ---------- */

header.top {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-elevated) 92%, transparent);
  backdrop-filter: blur(6px);
}

header.top .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1.25rem;
  padding-top: 0.7rem;
  padding-bottom: 0.7rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-ui);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}

.brand .u { color: var(--accent); }

nav.main {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.1rem;
}

nav.main a {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-muted);
  text-decoration: none;
}

nav.main a:hover,
nav.main a[aria-current="page"] { color: var(--accent); }

/* ---------- type ---------- */

h1, h2 {
  font-family: var(--font-ui);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}

h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.9rem, 6vw, 3.25rem);
  line-height: 1.15;
  text-shadow: var(--glow);
}

h2 {
  margin: 0 0 1.25rem;
  font-size: 1.2rem;
}

h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  color: var(--text);
}

.eyebrow {
  display: block;
  margin-bottom: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--green);
}

.lead {
  max-width: 42rem;
  margin: 0 0 2rem;
  font-size: 1.125rem;
  color: var(--text-muted);
}

p { margin: 0 0 1rem; }

.muted { color: var(--text-muted); }

code, kbd {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 0.05em 0.35em;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--bg-elevated);
  color: var(--green);
  overflow-wrap: anywhere;
}

pre {
  margin: 0 0 1rem;
  padding: 0.8rem 1rem;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--green);
}

pre code { padding: 0; border: 0; background: none; font-size: inherit; }

/* ---------- layout blocks ---------- */

.hero { padding: 4.5rem 0 3rem; }

section { padding: 2.5rem 0; }

section + section { border-top: 1px solid var(--border); }

.section-intro { max-width: 44rem; color: var(--text-muted); }

.grid-2, .grid-3 {
  display: grid;
  gap: 1rem;
}

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr)); }

.card {
  display: flex;
  flex-direction: column;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-panel);
  min-width: 0;
}

.card > :last-child { margin-bottom: 0; }

.card p,
.card ul,
.card ol { color: var(--text-muted); font-size: 0.95rem; }

.card ul, .card ol { margin: 0 0 1rem; padding-left: 1.15rem; }
.card li { margin-bottom: 0.25rem; }

.card .push { margin-top: auto; }

.meta {
  display: block;
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-faint);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0 0 0.9rem;
  padding: 0;
  list-style: none;
}

.chips li {
  margin: 0;
  padding: 0.05rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.chips li.hot { border-color: var(--green); color: var(--green); }

/* ---------- buttons ---------- */

.buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.btn {
  display: inline-block;
  padding: 0.6rem 1.1rem;
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  background: var(--accent-bg);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  line-height: 1.3;
  text-decoration: none;
  transition: box-shadow 0.15s, border-color 0.15s;
}

.btn:hover,
.btn:focus-visible {
  border-color: var(--accent);
  box-shadow: var(--glow);
}

.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg);
  font-weight: 700;
}

.btn.small { padding: 0.4rem 0.8rem; font-size: 0.875rem; }

/* ---------- figures & media ---------- */

figure { margin: 0; }

.shot {
  display: block;
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
}

figcaption {
  margin-top: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-faint);
}

.gallery {
  display: grid;
  gap: 2rem;
}

/* A fake terminal window, for the terminal tools. */
.term {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #02080b;
  overflow: hidden;
}

.term-bar {
  display: flex;
  gap: 0.35rem;
  padding: 0.45rem 0.7rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
}

.term-bar span {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  background: var(--border);
}

.term pre {
  margin: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: #7ff7d0;
  font-size: 0.8rem;
}

.term pre .hl { background: #0b4a5a; color: #e6fdff; }
.term pre .dim { color: #3f7d8d; }
.term pre .ref { color: #ffb347; }

/* ---------- tables ---------- */

.table-scroll { overflow-x: auto; }

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

table.data th,
table.data td {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

table.data th {
  background: var(--bg-elevated);
  font-family: var(--font-mono);
  font-weight: 400;
  color: var(--text-muted);
}

table.data td { background: var(--bg-panel); color: var(--text-muted); }
table.data td:first-child { color: var(--accent); font-weight: 700; white-space: nowrap; }

ol.steps { margin: 0 0 1rem; padding-left: 1.25rem; color: var(--text-muted); }
ol.steps li { margin-bottom: 0.35rem; }

/* ---------- home: featured product ---------- */

.feature {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 2rem;
  align-items: center;
  padding: 2rem;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent-bg), var(--bg-panel) 60%);
  box-shadow: 0 0 40px rgba(0, 229, 255, 0.08);
}

.feature h2 {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: clamp(1.4rem, 4vw, 2rem);
  text-shadow: var(--glow);
}

.feature p { color: var(--text-muted); }

/* ---------- home: tool list ---------- */

.tool {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
  padding: 2rem 0;
}

.tool + .tool { border-top: 1px dashed var(--border); }

.tool h3 {
  margin-bottom: 0.4rem;
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--accent);
}

.tool p, .tool ul { color: var(--text-muted); }
.tool ul { padding-left: 1.15rem; }

.tools-small {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.tools-small h3 { font-family: var(--font-mono); font-weight: 400; color: var(--accent); }

/* ---------- footer ---------- */

footer {
  margin-top: 2rem;
  padding: 1.5rem 0 3rem;
  border-top: 1px solid var(--border);
  font-size: 0.875rem;
  color: var(--text-faint);
}

footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 2rem;
}

/* ---------- small screens ---------- */

@media (max-width: 760px) {
  .hero { padding: 2.5rem 0 2rem; }
  .feature { grid-template-columns: minmax(0, 1fr); padding: 1.25rem; gap: 1.25rem; }
  .tool { grid-template-columns: minmax(0, 1fr); gap: 1rem; }
  header.top { position: static; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
}

/* chips and buttons inside cards: no list indent, buttons keep their width */
.card ul.chips { padding-left: 0; }
.card > .btn { align-self: flex-start; }
.tool ul.chips { padding-left: 0; }
.brand .u { letter-spacing: 0; margin: 0 0.1em 0 -0.12em; }