/* IRE Tools home. Dark theme, palette taken from the IRE Tools logo: gunmetal, brushed steel, copper rust. */

:root {
  color-scheme: dark;

  --ink: #0e0f11;          /* page background */
  --ink-2: #151719;        /* raised surfaces */
  --ink-3: #1d2024;        /* inputs, keycaps, code */
  --line: #2b2f35;
  --line-soft: #202328;
  --text: #eceff3;
  --muted: #a6aeb9;
  --faint: #7b8490;

  --steel: #b9c3cf;
  --copper: #d9894f;       /* logo rust */
  --copper-hi: #f2b57f;
  --copper-lo: #a85f30;

  --brand: linear-gradient(135deg, var(--copper-hi), var(--copper) 55%, var(--copper-lo));
  --steel-grad: linear-gradient(180deg, #f3f6f9, #9aa5b1 55%, #c8d0d8);

  /* per-tool accents (set again on each tool section) */
  --accent: var(--copper);

  --rail-w: 280px;
  --rail-w-collapsed: 80px;
  --gutter: clamp(20px, 4vw, 56px);
  --measure: 66ch;

  --font-body: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-serif: Georgia, "Iowan Old Style", "Palatino Linotype", serif;
  --font-mono: ui-monospace, "Cascadia Mono", Consolas, "SFMono-Regular", monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 84px; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }

body {
  margin: 0;
  background:
    radial-gradient(1100px 520px at 78% -120px, rgba(217,137,79,.10), transparent 70%),
    var(--ink);
  color: var(--text);
  font: 400 1rem/1.65 var(--font-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; height: auto; }
a { color: var(--copper-hi); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: #ffd9b8; }
p { margin: 0 0 1em; }
h1, h2, h3, h4 { font-family: var(--font-display); margin: 0; line-height: 1.12; letter-spacing: -0.02em; text-wrap: balance; }
ul, ol { margin: 0; padding: 0; }
:focus-visible { outline: 2px solid var(--copper-hi); outline-offset: 3px; border-radius: 6px; }

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.ico { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.ico-sm { width: 16px; height: 16px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.skip { position: absolute; left: 12px; top: -60px; background: var(--copper-hi); color: #1a1006; padding: 10px 16px; border-radius: 8px; font-weight: 600; z-index: 100; text-decoration: none; }
.skip:focus { top: 12px; }

code, kbd {
  overflow-wrap: anywhere;
  font: 0.88em/1.4 var(--font-mono);
  background: var(--ink-3); border: 1px solid var(--line); border-radius: 6px; padding: 0.12em 0.4em; color: var(--text);
}
.hash { display: block; font: 0.8rem/1.5 var(--font-mono); word-break: break-all; background: var(--ink-3); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; color: var(--steel); user-select: all; }

/* ---------- Top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; gap: 14px;
  height: 64px; padding: 0 var(--gutter) 0 calc(var(--rail-w) + var(--gutter));
  background: rgba(14,15,17,.86); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-soft);
  transition: padding-left .2s;
}
body.rail-collapsed .topbar { padding-left: calc(var(--rail-w-collapsed) + var(--gutter)); }
.topbar .brand { display: none; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font: 700 1.05rem var(--font-display); }
.topbar .brand img { height: 34px; width: auto; }
.topbar .tagline { color: var(--muted); font-size: .92rem; }
.topbar .spacer { flex: 1; }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font: 600 1rem/1 var(--font-body);
  padding: 15px 22px; border-radius: 12px; text-decoration: none;
  border: 1px solid var(--line); background: var(--ink-2); color: var(--text);
  cursor: pointer; transition: transform .12s, border-color .12s, background .12s;
}
.btn:hover { border-color: #46505c; background: var(--ink-3); color: var(--text); transform: translateY(-1px); }
.btn-primary { background: var(--brand); color: #1c1006; border-color: transparent; box-shadow: 0 6px 22px -8px rgba(217,137,79,.6); }
.btn-primary:hover { background: var(--brand); color: #1c1006; border-color: transparent; filter: brightness(1.07); }
.btn-sm { padding: 11px 16px; font-size: .92rem; border-radius: 10px; }
.btn .ico { width: 19px; height: 19px; }

.icon-btn { display: inline-grid; place-items: center; width: 42px; height: 42px; border-radius: 10px; border: 1px solid var(--line); background: var(--ink-2); color: var(--text); cursor: pointer; }
.icon-btn:hover { background: var(--ink-3); border-color: #46505c; }

/* ---------- Left rail ---------- */
.rail {
  position: fixed; inset: 0 auto 0 0; width: var(--rail-w); z-index: 50;
  display: flex; flex-direction: column;
  background: linear-gradient(180deg, #121416, #0d0e10);
  border-right: 1px solid var(--line-soft);
  padding: 18px 14px; overflow-y: auto; overflow-x: hidden;
  transition: width .2s, transform .2s;
}
.rail .rail-brand { display: flex; align-items: center; gap: 12px; padding: 6px 8px 18px; text-decoration: none; color: var(--text); }
.rail .rail-brand img { width: 64px; height: auto; flex: none; }
.rail .rail-brand span { font: 800 1.2rem/1.1 var(--font-display); letter-spacing: -.01em; }
.rail .rail-brand small { display: block; font: 500 .74rem var(--font-body); color: var(--faint); letter-spacing: .02em; margin-top: 3px; }
.rail h2.group { font: 700 .7rem var(--font-body); text-transform: uppercase; letter-spacing: .12em; color: var(--faint); padding: 18px 12px 8px; }
.rail ul { list-style: none; display: grid; gap: 2px; }
.rail a.nav {
  display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: 10px;
  color: var(--muted); text-decoration: none; font-weight: 500; font-size: .98rem; border: 1px solid transparent;
}
.rail a.nav:hover { background: var(--ink-2); color: var(--text); }
.rail a.nav[aria-current="true"] { background: var(--ink-3); color: var(--text); border-color: var(--line); box-shadow: inset 3px 0 0 var(--copper); }
.rail a.nav img.nav-logo { width: 22px; height: 22px; border-radius: 5px; flex: none; }
.rail a.nav .label { flex: 1; min-width: 0; }
.rail a.nav .ext { width: 14px; height: 14px; opacity: .7; }
.rail .rail-foot { margin-top: auto; padding: 18px 12px 4px; color: var(--faint); font-size: .78rem; line-height: 1.5; }

body.rail-collapsed .rail { width: var(--rail-w-collapsed); }
body.rail-collapsed .rail .rail-brand span, body.rail-collapsed .rail h2.group, body.rail-collapsed .rail a.nav .label,
body.rail-collapsed .rail a.nav .ext, body.rail-collapsed .rail .rail-foot { display: none; }
body.rail-collapsed .rail .rail-brand { justify-content: center; padding-inline: 0; }
body.rail-collapsed .rail .rail-brand img { width: 52px; }
body.rail-collapsed .rail a.nav { justify-content: center; padding: 12px 0; }
body.rail-collapsed .rail ul + h2.group { display: block; height: 1px; padding: 0; margin: 10px 14px; background: var(--line-soft); font-size: 0; }

.scrim { display: none; }

main { margin-left: var(--rail-w); transition: margin-left .2s; }
body.rail-collapsed main { margin-left: var(--rail-w-collapsed); }
.wrap { padding: 0 var(--gutter); max-width: calc(1100px + var(--gutter) * 2); }

/* ---------- Hero ---------- */
.hero { padding-top: clamp(36px, 7vw, 84px); padding-bottom: clamp(28px, 5vw, 56px); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: clamp(24px, 5vw, 64px); align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font: 600 .78rem var(--font-body); letter-spacing: .12em; text-transform: uppercase; color: var(--copper-hi); margin-bottom: 18px; }
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--brand); border-radius: 2px; }
.hero h1 { font-size: clamp(2.3rem, 5.4vw, 4rem); font-weight: 800; }
.hero h1 em { font-style: normal; background: var(--steel-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .lede { font-size: clamp(1.05rem, 1.6vw, 1.22rem); color: var(--muted); max-width: 56ch; margin-top: 20px; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero .logo-big { filter: drop-shadow(0 24px 40px rgba(0,0,0,.55)); }
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; list-style: none; }
.chips li { display: flex; align-items: center; gap: 8px; font-size: .9rem; color: var(--muted); padding: 7px 12px; border: 1px solid var(--line); border-radius: 999px; background: var(--ink-2); }
.chips .ico { width: 16px; height: 16px; color: var(--copper-hi); }

/* ---------- Sections ---------- */
section { padding-block: clamp(36px, 6vw, 72px); border-top: 1px solid var(--line-soft); }
.hero + section { border-top: 0; }
section h2 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); font-weight: 800; margin-bottom: 18px; }
section h3 { font-size: 1.25rem; font-weight: 700; margin: 34px 0 10px; }
.prose { max-width: var(--measure); }
.prose p, .prose li { color: #d3d9e1; }
.prose ul { padding-left: 1.2em; display: grid; gap: .4em; margin-bottom: 1em; }
.prose ul li::marker { color: var(--copper); }
.muted { color: var(--muted); }
.small { font-size: .88rem; }

/* tool overview cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 18px; margin-top: 26px; }
.card {
  display: flex; flex-direction: column; gap: 12px;
  background: linear-gradient(180deg, var(--ink-2), #121315);
  border: 1px solid var(--line); border-radius: 18px; padding: 22px;
  position: relative; overflow: hidden;
}
.card::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 3px; background: var(--accent); }
.card .card-head { display: flex; align-items: center; gap: 14px; }
.card .card-head img { width: 52px; height: 52px; border-radius: 12px; }
.card h3 { margin: 0; font-size: 1.2rem; }
.tag { display: inline-block; font: 600 .72rem var(--font-body); letter-spacing: .06em; text-transform: uppercase; padding: 4px 9px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); margin-top: 4px; }
.card p { color: var(--muted); font-size: .96rem; margin: 0; flex: 1; }
.card .btn { align-self: flex-start; }

/* tool sections */
.tool-head { display: flex; align-items: center; gap: 18px; margin-bottom: 8px; }
.tool-head img { width: 72px; height: 72px; border-radius: 16px; flex: none; box-shadow: 0 10px 30px -12px rgba(0,0,0,.8); }
.tool-head h2 { margin: 0; }
.tool-head .tag { margin-top: 8px; border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); color: color-mix(in srgb, var(--accent) 70%, white); }
.tool-section { --edge: var(--accent); }
.tool-section .lead { font-size: 1.12rem; color: #d3d9e1; max-width: 62ch; margin-top: 14px; }
.tool-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 22px 0 8px; align-items: center; }
.notice {
  display: flex; gap: 12px; align-items: flex-start; margin: 20px 0 0; max-width: 66ch;
  padding: 14px 16px; border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--line)); border-radius: 12px;
  background: color-mix(in srgb, var(--accent) 9%, var(--ink-2)); font-size: .95rem; color: #d3d9e1;
}
.notice .ico { color: color-mix(in srgb, var(--accent) 80%, white); margin-top: 2px; }
.notice strong { color: var(--text); }

.shot { margin: 0; }
.shot img { width: 100%; border-radius: 12px; border: 1px solid var(--line); background: #000; box-shadow: 0 24px 60px -28px rgba(0,0,0,.9); }
.shot figcaption { color: var(--faint); font-size: .86rem; margin-top: 10px; }
.shots { display: grid; gap: 22px; margin-top: 30px; }
.shots.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.shots.planner-pair { grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr); align-items: start; }
.shots .span { grid-column: 1 / -1; }
.shot.portrait img { max-width: 340px; margin-inline: auto; }

.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 14px; margin-top: 26px; }
.feature { padding: 18px; border: 1px solid var(--line); border-radius: 14px; background: var(--ink-2); }
.feature .ico { color: color-mix(in srgb, var(--accent) 80%, white); width: 24px; height: 24px; margin-bottom: 8px; }
.feature h4 { font-size: 1rem; margin-bottom: 4px; letter-spacing: -.01em; }
.feature p { margin: 0; color: var(--muted); font-size: .92rem; }

/* download box */
.dlbox { margin-top: 28px; border: 1px solid var(--line); border-radius: 18px; background: linear-gradient(180deg, var(--ink-2), #121315); padding: clamp(18px, 3vw, 30px); display: grid; gap: 22px; }
.dlbox .dl-top { display: flex; flex-wrap: wrap; gap: 18px 26px; align-items: center; }
.dlbox .dl-top img { width: 64px; height: 64px; border-radius: 14px; }
.dlbox > * { min-width: 0; }
.dlbox .dl-meta { color: var(--muted); font-size: .92rem; flex: 1 1 200px; min-width: 0; overflow-wrap: anywhere; }
.dlbox .dl-meta strong { color: var(--text); font-size: 1.05rem; display: block; }
dl.hashes { display: grid; gap: 14px; margin: 0; }
dl.hashes dt { font-weight: 600; font-size: .9rem; margin-bottom: 4px; }
dl.hashes dd { margin: 0; }
ol.steps { list-style: none; counter-reset: s; display: grid; gap: 12px; }
ol.steps li { counter-increment: s; display: grid; grid-template-columns: 34px 1fr; gap: 12px; align-items: start; color: #d3d9e1; }
ol.steps li::before { content: counter(s); display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--ink-3); border: 1px solid var(--line); font: 700 .88rem var(--font-body); color: var(--copper-hi); }

table { border-collapse: collapse; width: 100%; max-width: 760px; font-size: .94rem; margin: 14px 0 6px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
th { color: var(--faint); font: 600 .78rem var(--font-body); text-transform: uppercase; letter-spacing: .08em; width: 28%; }
td { color: #d3d9e1; }

/* legal prose */
.legal h3 { margin-top: 30px; }
.legal p, .legal li { color: #c6ced8; max-width: 78ch; }
.legal ul { padding-left: 1.2em; display: grid; gap: .45em; margin-bottom: 1em; }
.legal ul li::marker { color: var(--copper); }
details { border: 1px solid var(--line); border-radius: 12px; background: var(--ink-2); margin: 12px 0; max-width: 78ch; }
details summary { cursor: pointer; padding: 12px 16px; font-weight: 600; }
details pre { margin: 0; padding: 4px 16px 16px; white-space: pre-wrap; font: .82rem/1.55 var(--font-mono); color: var(--muted); }
.updated { color: var(--faint); font-size: .88rem; }

footer { margin-left: var(--rail-w); border-top: 1px solid var(--line-soft); padding: 34px var(--gutter) 60px; color: var(--faint); font-size: .9rem; transition: margin-left .2s; }
body.rail-collapsed footer { margin-left: var(--rail-w-collapsed); }
footer .foot-inner { display: flex; flex-wrap: wrap; gap: 14px 28px; align-items: center; justify-content: space-between; max-width: 1100px; }
footer nav { display: flex; gap: 20px; flex-wrap: wrap; }
footer a { color: var(--muted); }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); }
  .hero .logo-big { order: -1; width: 100%; max-width: 380px; }
  .shots.two, .shots.planner-pair { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .rail { transform: translateX(-100%); width: min(86vw, 300px); box-shadow: 0 0 60px rgba(0,0,0,.7); }
  body.rail-open .rail { transform: none; }
  body.rail-open .scrim { display: block; position: fixed; inset: 0; z-index: 45; background: rgba(0,0,0,.55); }
  main, footer, body.rail-collapsed main, body.rail-collapsed footer { margin-left: 0; }
  .topbar, body.rail-collapsed .topbar { padding-left: var(--gutter); }
  .topbar .brand { display: inline-flex; }
  .topbar .tagline { display: none; }
  /* the collapsed state only applies to desktop */
  body.rail-collapsed .rail { width: min(86vw, 300px); }
  body.rail-collapsed .rail .rail-brand span, body.rail-collapsed .rail h2.group, body.rail-collapsed .rail a.nav .label,
  body.rail-collapsed .rail a.nav .ext, body.rail-collapsed .rail .rail-foot { display: revert; }
  body.rail-collapsed .rail a.nav { justify-content: flex-start; padding: 10px 12px; }
  body.rail-collapsed .rail .rail-brand { justify-content: flex-start; padding-inline: 8px; }
  body.rail-collapsed .rail .rail-brand img { width: 64px; }
  body.rail-collapsed .rail ul + h2.group { height: auto; padding: 18px 12px 8px; margin: 0; background: none; font-size: .7rem; }
}
@media (max-width: 520px) {
  .tool-head { align-items: flex-start; }
  .tool-head img { width: 56px; height: 56px; }
  .btn { padding: 14px 18px; }
  th { width: 34%; }
}
@media print {
  .rail, .topbar, .scrim { display: none; }
  main, footer { margin-left: 0; }
  body { background: #fff; color: #000; }
}

/* ---------- Revisions ---------- */
/* optical centering: the logo's visual weight is the plate, below the wrench tip */
.rail .rail-brand span { padding-top: 9px; }
.topbar .brand { padding-top: 0; }
.topbar .brand img + * { }
.rail { position: fixed; }
.rail-collapse {
  position: absolute; top: 24px; right: 12px; width: 30px; height: 30px; display: grid; place-items: center;
  border-radius: 8px; border: 1px solid var(--line); background: var(--ink-2); color: var(--muted); cursor: pointer; padding: 0;
}
.rail-collapse:hover { background: var(--ink-3); color: var(--text); border-color: #46505c; }
.rail-collapse .ico { width: 18px; height: 18px; transition: transform .2s; }
body.rail-collapsed .rail-collapse { position: static; margin: 0 auto 10px; }
body.rail-collapsed .rail-collapse .ico { transform: rotate(180deg); }
.menu-open { display: none; }
@media (max-width: 860px) {
  .menu-open { display: inline-grid; }
  .rail-collapse, body.rail-collapsed .rail-collapse { display: none; }
}