/* TridentSense product site. One stylesheet for the landing page and the docs. */
:root {
  --blue: #0070d1;
  --blue-deep: #003791;
  --blue-glow: #1ea7fd;
  --bg: #05070c;
  --bg-2: #0a0e16;
  --card: #10141c;
  --card-2: #141a26;
  --line: #1e2a44;
  --text: #f2f5fb;
  --muted: #9aa7bd;
  --ok: #2fd08a;
  --radius: 16px;
  --max: 1180px;
  color-scheme: dark;
}

html[data-theme="light"] {
  --bg: #f3f5f9;
  --bg-2: #ffffff;
  --card: #ffffff;
  --card-2: #f6f8fc;
  --line: #d6deeb;
  --text: #0c1422;
  --muted: #50607a;
  color-scheme: light;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--blue-glow); text-decoration: none; }
a:hover { text-decoration: underline; }
html[data-theme="light"] a { color: var(--blue); }

.wrap { width: min(var(--max), calc(100% - 48px)); margin-inline: auto; }

/* ---- top bar ---- */
.top {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--line);
}
.top .wrap { display: flex; align-items: center; gap: 28px; height: 68px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--text); font-weight: 800; letter-spacing: 0.06em; font-size: 18px; }
.brand:hover { text-decoration: none; }
.brand img { width: 36px; height: 36px; border-radius: 10px; }
.nav { display: flex; gap: 22px; margin-left: auto; align-items: center; }
.nav a { color: var(--muted); font-weight: 600; font-size: 14px; }
.nav a:hover, .nav a.on { color: var(--text); text-decoration: none; }
.theme-btn {
  border: 1px solid var(--line); background: var(--card); color: var(--text);
  border-radius: 999px; padding: 7px 14px; font: inherit; font-size: 13px; font-weight: 600; cursor: pointer;
}
.theme-btn:hover { border-color: var(--blue); }

/* ---- buttons, chips ---- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 22px; border-radius: 999px; font-weight: 700; font-size: 15px;
  border: 1px solid transparent; cursor: pointer; transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover { transform: translateY(-1px); text-decoration: none; }
.btn-primary { background: linear-gradient(180deg, var(--blue-glow), var(--blue)); color: #fff; box-shadow: 0 10px 30px rgba(0, 112, 209, 0.4); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--blue); }
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border-radius: 999px; font-size: 12px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase;
  border: 1px solid color-mix(in srgb, var(--blue-glow) 45%, transparent);
  background: color-mix(in srgb, var(--blue) 18%, transparent); color: var(--blue-glow);
}
html[data-theme="light"] .pill { color: var(--blue-deep); }
.pill .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--blue-glow); box-shadow: 0 0 10px var(--blue-glow); animation: pulse 2s infinite; }
@keyframes pulse { 50% { opacity: 0.35; } }

/* ---- hero ---- */
.hero {
  position: relative; overflow: hidden;
  padding: 96px 0 0;
  background:
    radial-gradient(900px 500px at 78% 0%, rgba(0, 112, 209, 0.35), transparent 60%),
    radial-gradient(700px 420px at 8% 20%, rgba(0, 55, 145, 0.45), transparent 62%),
    var(--bg);
}
.hero h1 { font-size: clamp(40px, 6vw, 72px); line-height: 1.04; margin: 22px 0 18px; letter-spacing: -0.02em; font-weight: 800; }
.hero h1 em { font-style: normal; background: linear-gradient(90deg, var(--blue-glow), #7fd1ff); -webkit-background-clip: text; background-clip: text; color: transparent; }
html[data-theme="light"] .hero h1 em { background: linear-gradient(90deg, var(--blue-deep), var(--blue)); -webkit-background-clip: text; background-clip: text; }
.hero p.lead { font-size: 20px; color: var(--muted); max-width: 720px; margin: 0 0 30px; }
.hero .cta { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.hero .fine { color: var(--muted); font-size: 13px; margin-top: 16px; }
.hero-shot {
  margin-top: 64px; border-radius: 20px 20px 0 0; border: 1px solid var(--line); border-bottom: none;
  box-shadow: 0 -20px 80px rgba(0, 112, 209, 0.28); overflow: hidden;
}

/* ---- sections ---- */
section { padding: 96px 0; }
section.alt { background: var(--bg-2); border-block: 1px solid var(--line); }
.eyebrow { color: var(--blue-glow); font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; font-size: 12px; }
html[data-theme="light"] .eyebrow { color: var(--blue); }
h2 { font-size: clamp(28px, 3.6vw, 44px); line-height: 1.12; margin: 10px 0 14px; letter-spacing: -0.015em; }
.sub { color: var(--muted); font-size: 18px; max-width: 760px; margin: 0 0 44px; }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 56px; }
.stat { border: 1px solid var(--line); background: var(--card); border-radius: var(--radius); padding: 22px; }
.stat b { display: block; font-size: 34px; line-height: 1; margin-bottom: 8px; }
.stat span { color: var(--muted); font-size: 14px; }

.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card {
  border: 1px solid var(--line); background: var(--card); border-radius: var(--radius); padding: 26px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.card:hover { border-color: color-mix(in srgb, var(--blue) 70%, var(--line)); transform: translateY(-2px); }
.card h3 { margin: 14px 0 8px; font-size: 19px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.ico {
  width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep)); box-shadow: 0 8px 22px rgba(0, 112, 209, 0.35);
}
.ico svg { width: 22px; height: 22px; fill: #fff; }

/* feature rows: text beside a screenshot */
.feature { display: grid; grid-template-columns: 1fr 1.25fr; gap: 56px; align-items: center; padding: 44px 0; }
.feature.flip > .shot { order: -1; }
.feature h3 { font-size: 30px; line-height: 1.15; margin: 10px 0 14px; }
.feature p { color: var(--muted); margin: 0 0 16px; }
.feature ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.feature li { padding-left: 28px; position: relative; color: var(--text); }
.feature li::before { content: ""; position: absolute; left: 0; top: 9px; width: 14px; height: 8px; border-left: 2px solid var(--ok); border-bottom: 2px solid var(--ok); transform: rotate(-45deg); }
.shot { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45); background: var(--card); cursor: zoom-in; }
html[data-theme="light"] .shot { box-shadow: 0 24px 60px rgba(20, 40, 80, 0.16); }

/* modes */
.modes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.mode { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--card); }
.mode img { height: 190px; width: 100%; object-fit: cover; }
.mode div { padding: 22px; }
.mode h3 { margin: 0 0 8px; font-size: 20px; }
.mode p { margin: 0; color: var(--muted); font-size: 15px; }

/* controllers */
.pads { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.pad { border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); overflow: hidden; text-align: center; }
.pad img { height: 150px; width: 100%; object-fit: cover; }
.pad b { display: block; padding: 14px 12px 4px; }
.pad span { display: block; padding: 0 12px 16px; color: var(--muted); font-size: 13px; }

/* gallery */
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.gallery figure { margin: 0; }
.gallery figcaption { color: var(--muted); font-size: 13px; padding: 10px 4px 0; }

/* faq */
details { border: 1px solid var(--line); border-radius: 14px; background: var(--card); padding: 18px 22px; margin-bottom: 12px; }
summary { cursor: pointer; font-weight: 700; font-size: 17px; }
details p { color: var(--muted); margin: 12px 0 0; }

/* steam band */
.steam {
  text-align: center; padding: 110px 0;
  background:
    linear-gradient(180deg, rgba(5, 7, 12, 0.72), rgba(5, 7, 12, 0.9)),
    url("../img/network-hero.jpg") center / cover no-repeat;
  color: #f2f5fb;
}
.steam h2 { font-size: clamp(34px, 5vw, 60px); }
.steam p { color: #b9c5d9; font-size: 19px; max-width: 640px; margin: 0 auto 30px; }

footer { border-top: 1px solid var(--line); padding: 40px 0 56px; color: var(--muted); font-size: 13px; }
footer .wrap { display: grid; gap: 10px; }

/* lightbox */
.lightbox { position: fixed; inset: 0; z-index: 100; display: none; place-items: center; background: rgba(2, 4, 8, 0.9); padding: 28px; cursor: zoom-out; }
.lightbox.on { display: grid; }
.lightbox img { max-height: 92vh; border-radius: 12px; border: 1px solid #1e2a44; }

/* ---- documentation ---- */
.docs { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 48px; padding: 40px 0 96px; }
.toc { position: sticky; top: 88px; align-self: start; max-height: calc(100vh - 110px); overflow-y: auto; padding-right: 8px; scrollbar-width: thin; }
.toc h4 { margin: 20px 0 6px; font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); }
.toc h4:first-child { margin-top: 0; }
.toc a { display: block; padding: 6px 12px; border-radius: 8px; color: var(--muted); font-size: 14px; font-weight: 600; border-left: 2px solid transparent; }
.toc a:hover { color: var(--text); text-decoration: none; background: var(--card); }
.toc a.on { color: var(--text); border-left-color: var(--blue-glow); background: var(--card); }
.doc h1 { font-size: 40px; line-height: 1.1; margin: 0 0 10px; letter-spacing: -0.015em; }
.doc > p.lead { color: var(--muted); font-size: 18px; margin: 0 0 8px; }
.doc section { padding: 44px 0 8px; border-top: 1px solid var(--line); margin-top: 36px; }
.doc h2 { font-size: 28px; margin: 0 0 10px; }
.doc h3 { font-size: 19px; margin: 28px 0 8px; }
.doc p, .doc li { color: color-mix(in srgb, var(--text) 86%, var(--muted)); }
.doc ol, .doc ul { padding-left: 22px; }
.doc ol li { margin: 6px 0; }
.doc .outcome {
  border: 1px solid color-mix(in srgb, var(--ok) 40%, var(--line)); background: color-mix(in srgb, var(--ok) 9%, var(--card));
  border-radius: 12px; padding: 14px 18px; margin: 16px 0;
}
.doc .outcome b { color: var(--ok); letter-spacing: 0.08em; text-transform: uppercase; font-size: 12px; display: block; margin-bottom: 4px; }
.doc .note {
  border: 1px solid color-mix(in srgb, var(--blue-glow) 40%, var(--line)); background: color-mix(in srgb, var(--blue) 10%, var(--card));
  border-radius: 12px; padding: 14px 18px; margin: 16px 0;
}
.doc .note b { color: var(--blue-glow); letter-spacing: 0.08em; text-transform: uppercase; font-size: 12px; display: block; margin-bottom: 4px; }
html[data-theme="light"] .doc .note b { color: var(--blue); }
.doc figure { margin: 20px 0 8px; }
.doc figcaption { color: var(--muted); font-size: 13px; padding-top: 8px; }
.doc table { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 15px; }
.doc th, .doc td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.doc th { color: var(--muted); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; }
kbd, code { font-family: "Cascadia Mono", Consolas, monospace; font-size: 0.9em; background: var(--card-2); border: 1px solid var(--line); border-radius: 6px; padding: 1px 6px; }

@media (max-width: 960px) {
  .grid3, .modes, .gallery { grid-template-columns: 1fr 1fr; }
  .pads, .stats { grid-template-columns: 1fr 1fr; }
  .feature { grid-template-columns: 1fr; gap: 24px; }
  .feature.flip > .shot { order: 0; }
  .docs { grid-template-columns: 1fr; }
  .toc { position: static; max-height: none; }
  .nav a:not(.keep) { display: none; }
}
@media (max-width: 620px) {
  .grid3, .modes, .gallery, .pads, .stats { grid-template-columns: 1fr; }
  section { padding: 64px 0; }
}

/* comparison */
.compare { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--card); }
.compare table { width: 100%; border-collapse: collapse; font-size: 15px; }
.compare th, .compare td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--line); vertical-align: top; }
.compare tr:last-child td { border-bottom: none; }
.compare thead th { font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); background: var(--card-2); }
.compare thead th.us { color: var(--blue-glow); }
html[data-theme="light"] .compare thead th.us { color: var(--blue); }
.compare td:first-child { font-weight: 600; width: 44%; }
.compare td.no { color: var(--muted); }
.compare td.part { color: var(--muted); }
.compare td.yes { color: var(--text); font-weight: 600; background: color-mix(in srgb, var(--blue) 9%, transparent); }
.compare td.yes::before { content: ""; display: inline-block; width: 12px; height: 7px; margin-right: 10px; border-left: 2px solid var(--ok); border-bottom: 2px solid var(--ok); transform: rotate(-45deg) translateY(-3px); }
@media (max-width: 620px) { .compare th, .compare td { padding: 10px 12px; font-size: 14px; } }

/* The theme switch: named, with a sun or moon, and never hidden on a narrow screen. */
.theme-btn { display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; border-color: color-mix(in srgb, var(--blue-glow) 55%, var(--line)); }
.theme-ico { width: 14px; height: 14px; border-radius: 50%; background: #ffd65a; box-shadow: 0 0 0 3px rgba(255, 214, 90, 0.25); }
.theme-btn[data-next="dark"] .theme-ico { background: transparent; box-shadow: inset -5px -2px 0 0 #50607a; }
@media (max-width: 960px) { .nav { gap: 12px; } .theme-btn { padding: 7px 12px; } }
.compare th:nth-child(2), .compare td:nth-child(2) { width: 26%; }
.compare th:nth-child(3), .compare td:nth-child(3) { width: 30%; }

/* The overview: each card a link to its part of the page. */
a.card.pillar { display: block; color: inherit; transition: transform 0.15s ease, border-color 0.15s ease; }
html[data-theme="light"] a.card.pillar { color: inherit; }
a.card.pillar:hover { transform: translateY(-3px); border-color: var(--blue); }

/* The full list: a list in each card. */
.spec .card ul { margin: 10px 0 0; padding-left: 18px; color: var(--muted); font-size: 14.5px; line-height: 1.5; }
.spec .card li { margin: 5px 0; }
.spec .card h3 { margin-top: 0; }