/* FlugVel — design system v3.
   Keeps the device's own DNA (the sage/olive palette, the burnt-orange
   accent, the bracketed wordmark, sharp/technical geometry) but treats it
   like a real product site rather than a re-skinned settings page:
   a proper type pairing (Inter for reading, IBM Plex Mono for labels and
   technical chrome — the same split real hardware brands use), a paper-
   white surface that actually lifts off the sage background, soft shadow
   depth, hand-drawn icons instead of emoji, and real hover/motion detail. */

@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=IBM+Plex+Mono:wght@400;500;600&display=swap");

:root {
  --bg: #c7cfb6;
  --bg-alt: #bdc6a9;
  --surface: #faf9f1;
  --surface-2: #f1efe0;
  --ink: #23271d;
  --dim: #5c6249;
  --line: rgba(35, 39, 29, 0.14);
  --line-strong: #8a9078;
  --accent: #c05a1e;
  --accent-ink: #7a3510;
  --req: #9c3312;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --shadow-sm: 0 1px 2px rgba(35, 39, 29, .07), 0 1px 1px rgba(35, 39, 29, .04);
  --shadow-md: 0 14px 32px -14px rgba(35, 39, 29, .28), 0 3px 8px rgba(35, 39, 29, .06);
  --shadow-lg: 0 30px 60px -20px rgba(29, 31, 26, .45);
  --r: 5px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-ink); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

::selection { background: var(--accent); color: #fff; }

/* ============== Type ============== */
h1, h2, h3 { font-family: var(--sans); color: var(--ink); }
.mono, .eyebrow, .tag, .badge, .tab, .brand-title, .spec .label, code, kbd,
label, .n, .caption, .step-num, th { font-family: var(--mono); }

/* ============== Masthead + tab nav ============== */
.masthead-bar {
  border-bottom: 1px solid var(--line-strong);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
}
.masthead-bar .wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 34px;
  padding: 16px 24px;
  position: relative;
}
.brand-title {
  font-size: 14px;
  letter-spacing: 4px;
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
}
.brand-title b { color: var(--line-strong); font-weight: 600; }
.tabs { display: flex; gap: 4px; }
.tab {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 4px;
  font-size: 12px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--dim);
  font-weight: 500;
  border-bottom: 2px solid transparent;
  transition: color .15s ease, border-color .15s ease;
}
.tab .n { font-size: 10px; color: var(--line-strong); }
.tab.active, .tab:hover { color: var(--ink); text-decoration: none; border-color: var(--accent); }
.tab.active .n, .tab:hover .n { color: var(--accent); }
.bar-actions { position: absolute; top: 50%; right: 24px; transform: translateY(-50%); }
@media (max-width: 560px) {
  .masthead-bar .wrap { flex-direction: column; gap: 10px; padding: 14px 20px; }
  .bar-actions { position: static; transform: none; }
}

/* ============== Buttons ============== */
.act {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 14.5px;
  text-align: center;
  cursor: pointer;
  border-radius: var(--r);
  box-shadow: var(--shadow-sm);
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease, border-color .12s ease;
}
.act:hover { background: var(--accent-ink); border-color: var(--accent-ink); color: #fff; text-decoration: none; transform: translateY(-1px); box-shadow: var(--shadow-md); }
.act:active { transform: translateY(0); }
.act.ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); box-shadow: none; }
.act.ghost:hover { background: var(--surface); border-color: var(--ink); color: var(--ink); box-shadow: var(--shadow-sm); }
.act.danger { border-color: var(--req); background: var(--req); }
.act.danger:hover { background: #7a2a0d; border-color: #7a2a0d; }
.act.small { padding: 8px 15px; font-size: 12.5px; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }

/* ============== Hero ============== */
.hero {
  padding: 88px 0 64px;
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}
.hero .cta-row { justify-content: center; }
@media (max-width: 900px) {
  .hero { padding: 56px 0 40px; }
}
@media (max-width: 480px) {
  h1 { font-size: 32px; }
  .sub { font-size: 16px; }
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--dim);
  font-size: 11.5px;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 20px;
  padding: 5px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--surface);
}
.eyebrow b { color: var(--accent); font-weight: 600; }
h1 {
  font-size: 46px;
  line-height: 1.14;
  margin: 0 0 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.sub {
  color: var(--dim);
  font-size: 17.5px;
  line-height: 1.6;
  max-width: 46ch;
  margin: 0 auto 32px;
}

/* ============== The device frame ==============
   The whole site lives inside a scaled-up print of the actual FlugVel
   enclosure (see enclosure/flugvel_case.scad — soft-rounded injection-
   molded corners, a chamfered lip around the glass, an engraved
   wordmark): floated on its own surface with real margin around it so it
   reads as an object, not a full-bleed background. The real page (nav,
   hero, sections, everything) is the "screen" and scrolls inside it; a
   real control panel — the same encoder/button graphic from the old
   decorative mockup — sits fixed beside it, clustered tight the way the
   knob and button actually sit next to each other on the physical board.
   Turning the encoder isn't decoration: it spins with every scroll tick
   (script.js), and the button visibly depresses on any click. */
html, body { height: 100%; overscroll-behavior: none; }
body {
  overflow: hidden;
  background: radial-gradient(130% 110% at 50% -8%, #3d4131 0%, #1c1d15 55%, #0a0b07 100%);
}
.device-frame {
  position: fixed;
  inset: clamp(14px, 3vmin, 56px);
  display: flex;
  gap: 30px;
  border-radius: 32px;
  background:
    radial-gradient(circle 4px at 28px 28px, #000, transparent 5px),
    radial-gradient(circle 4px at calc(100% - 28px) 28px, #000, transparent 5px),
    radial-gradient(circle 4px at 28px calc(100% - 28px), #000, transparent 5px),
    radial-gradient(circle 4px at calc(100% - 28px) calc(100% - 28px), #000, transparent 5px),
    linear-gradient(165deg, #2e3126, #171813);
  padding: 44px;
  box-shadow:
    0 50px 100px -24px rgba(0,0,0,.6),
    0 14px 36px rgba(0,0,0,.4),
    inset 0 1px 0 rgba(255,255,255,.05);
}
.device-screen {
  flex: 1;
  min-width: 0;
  background: var(--bg);
  border-radius: 15px;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  box-shadow: inset 0 0 0 2px rgba(0,0,0,.35), inset 0 2px 22px rgba(0,0,0,.22);
  position: relative;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.device-screen::-webkit-scrollbar { display: none; width: 0; height: 0; }
.device-controls {
  width: 176px;
  flex: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 34px;
  position: relative;
}
.device-controls::after {
  content: "FLUGVEL";
  position: absolute;
  left: 50%;
  bottom: 6%;
  transform: translateX(-50%);
  writing-mode: vertical-rl;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 3px;
  color: rgba(255,255,255,.08);
}
.encoder {
  position: relative; width: 118px; height: 118px; border-radius: 50%;
  border: 1px solid #000; flex: none;
  background: repeating-conic-gradient(#0c0c0c 0 2.6deg, #242424 2.6deg 5.2deg),
    radial-gradient(circle at 50% 38%, #3a3a3a, #0f0f0f 70%);
  box-shadow: inset 0 4px 11px rgba(255,255,255,.10), inset 0 -9px 20px rgba(0,0,0,.75), 0 8px 20px rgba(0,0,0,.55);
}
.encoder::after {
  content: ""; position: absolute; inset: 15px; border-radius: 50%;
  background: radial-gradient(circle at 50% 34%, #333, #0d0d0d 72%);
}
.encoder .mark {
  position: absolute; left: 50%; top: 9px; width: 5px; height: 27px; border-radius: 2px;
  background: #e9e9e9; transform: translateX(-50%) rotate(18deg); z-index: 2;
  transform-origin: 50% 50px;
  transition: transform .09s linear;
}
.kobtn {
  position: relative; width: 62px; height: 62px; border-radius: 9px; flex: none;
  background: linear-gradient(#8d7458, #6b5540); border: 1px solid #46392b;
  box-shadow: 0 6px 14px rgba(0,0,0,.5);
  transition: transform .08s ease, box-shadow .08s ease;
}
.kobtn::after {
  content: ""; position: absolute; left: 50%; top: 50%; width: 28px; height: 28px; border-radius: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle at 44% 34%, #4e4e4e, #111 72%);
}
.kobtn.pressed {
  transform: translateY(2px) scale(.93);
  box-shadow: 0 1px 3px rgba(0,0,0,.5);
}
@media (prefers-reduced-motion: reduce) {
  .encoder .mark, .kobtn { transition: none; }
}
@media (max-width: 620px) {
  .device-frame { flex-direction: column; inset: 8px; padding: 18px; gap: 14px; border-radius: 22px; }
  .device-controls {
    width: auto; height: 110px; flex-direction: row; justify-content: center; gap: 40px; order: 2;
  }
  .device-controls::after { display: none; }
  .device-screen { order: 1; border-radius: 10px; }
  .encoder { width: 80px; height: 80px; }
  .encoder::after { inset: 10px; }
  .encoder .mark { width: 4px; height: 19px; top: 6px; transform-origin: 50% 34px; }
  .kobtn { width: 44px; height: 44px; }
  .kobtn::after { width: 20px; height: 20px; }
}

/* ============== Sections ============== */
section { padding: 76px 0; }
section.alt { background: var(--bg-alt); }
.section-head { margin-bottom: 40px; max-width: 62ch; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
h2 { font-size: 30px; margin: 0 0 12px; font-weight: 800; letter-spacing: -0.01em; }
.section-head p { color: var(--dim); font-size: 16.5px; max-width: 56ch; margin: 0; }

/* ============== Icons ============== */
.icon { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; display: block; }

/* ============== Feature cards ============== */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 900px) { .grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 580px) { .grid { grid-template-columns: 1fr; } }

.feature {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 26px 24px;
  box-shadow: var(--shadow-sm);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.feature:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: rgba(192,90,30,.35); }
.feature .icon-badge {
  width: 42px; height: 42px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(192, 90, 30, .10);
  color: var(--accent-ink);
  border-radius: 8px;
  margin-bottom: 16px;
}
.feature h3 { margin: 0 0 8px; font-size: 16.5px; font-weight: 700; letter-spacing: -0.01em; }
.feature p { margin: 0; color: var(--dim); font-size: 14.5px; line-height: 1.6; }

/* Setup-console step cards: numbered, a touch more technical than .feature */
.step-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 22px 22px 24px;
  box-shadow: var(--shadow-sm);
}
.step-card .step-head { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.step-card .step-no {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent-ink);
  background: rgba(192, 90, 30, .10);
  border-radius: 999px;
  width: 26px; height: 26px;
  display: flex; align-items: center; justify-content: center;
  flex: none;
}
.step-card h3 { margin: 0; font-size: 15px; font-weight: 700; }
.step-card p { margin: 0; color: var(--dim); font-size: 14px; line-height: 1.6; }
.badge {
  font-size: 10.5px; letter-spacing: .5px; padding: 2px 8px; text-transform: uppercase;
  border-radius: 999px; border: 1px solid var(--line-strong); color: var(--dim); font-weight: 500;
}
.badge.req { color: #fff; background: var(--req); border-color: var(--req); }
.tag { font-size: 10.5px; letter-spacing: .5px; color: var(--dim); text-transform: uppercase; font-weight: 500; }
.tag.rec { color: var(--accent-ink); }

/* ============== Spec strip ============== */
.specs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 700px) { .specs { grid-template-columns: 1fr 1fr; } }
.spec {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 18px 18px;
  box-shadow: var(--shadow-sm);
}
.spec .num { font-family: var(--sans); color: var(--ink); font-size: 22px; font-weight: 800; letter-spacing: -0.01em; }
.spec .label { color: var(--dim); font-size: 11px; letter-spacing: 1px; text-transform: uppercase; margin-top: 4px; }

/* ============== Closing CTA ============== */
.closing { text-align: center; }
.closing .section-head { margin-left: auto; margin-right: auto; }
.closing .cta-row { justify-content: center; }

footer {
  border-top: 1px solid var(--line-strong);
  padding: 28px 0;
  color: var(--dim);
  font-size: 13px;
}
footer .wrap { display: flex; align-items: center; justify-content: center; gap: 10px; }
footer .brand-title { font-size: 11px; }

/* ============== Form controls ============== */
fieldset {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 10px;
  padding: 16px 20px 22px;
  margin: 0 0 18px;
  box-shadow: var(--shadow-sm);
}
legend {
  font-size: 11.5px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 0 8px;
  color: var(--dim);
  font-weight: 500;
}
label {
  display: block;
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--dim);
  margin: 16px 0 6px;
  font-weight: 500;
}
label:first-of-type { margin-top: 4px; }
input, select, textarea {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--line-strong);
  background: var(--surface-2);
  color: var(--ink);
  font: inherit;
  font-family: var(--sans);
  font-size: 14.5px;
  border-radius: var(--r);
  -webkit-appearance: none;
  appearance: none;
  transition: border-color .12s ease, box-shadow .12s ease;
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(192, 90, 30, .15);
}
.hint { font-size: 12.5px; color: var(--dim); margin: 6px 0 2px; line-height: 1.5; }

/* ============== Manual ============== */
.manual-layout { display: grid; grid-template-columns: 220px 1fr; gap: 48px; padding: 48px 0 96px; }
@media (max-width: 900px) { .manual-layout { grid-template-columns: 1fr; } }
.toc { position: sticky; top: 78px; align-self: start; border-left: 2px solid var(--line); }
.toc a {
  display: block; padding: 7px 0 7px 14px; color: var(--dim);
  font-family: var(--mono);
  font-size: 11.5px; letter-spacing: .5px; text-transform: uppercase;
  border-left: 2px solid transparent; margin-left: -2px;
  transition: color .12s ease, border-color .12s ease;
}
.toc a:hover, .toc a.active { color: var(--accent-ink); border-left-color: var(--accent); text-decoration: none; }
.manual h1 { font-size: 34px; letter-spacing: -0.02em; }
.manual h2 { margin: 0 0 6px; scroll-margin-top: 78px; font-size: 24px; }
section.manual-intro { padding-bottom: 0; }
.manual h2.first { margin-top: 0; }
.manual-section { padding-top: 44px; border-top: 1px solid var(--line); margin-top: 44px; }
.manual-section:first-of-type { padding-top: 0; border-top: 0; margin-top: 0; }
.manual h3 {
  font-size: 13px; margin: 26px 0 10px; scroll-margin-top: 78px;
  letter-spacing: 1.5px; text-transform: uppercase; color: var(--accent-ink);
  font-family: var(--mono); font-weight: 500;
}
.manual p, .manual li { color: var(--ink); font-size: 15px; line-height: 1.65; }
.manual ol, .manual ul { padding-left: 22px; }
.step {
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
  padding: 14px 18px;
  margin: 14px 0;
  box-shadow: var(--shadow-sm);
}
.step .step-num {
  font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--accent-ink); font-weight: 600;
  display: flex; align-items: center; gap: 8px; margin-bottom: 4px;
}
code, kbd {
  font-family: var(--mono);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 0.9em;
  color: var(--accent-ink);
}
.callout {
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  background: var(--surface);
  color: var(--ink);
  border-radius: 0 8px 8px 0;
  padding: 12px 16px;
  font-size: 14px;
  margin: 18px 0;
  box-shadow: var(--shadow-sm);
}
.callout.danger { border-left-color: var(--req); }
table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 14px; }
th, td { text-align: left; padding: 11px 12px; border-bottom: 1px solid var(--line); color: var(--ink); }
th { color: var(--dim); font-weight: 500; font-size: 11px; text-transform: uppercase; letter-spacing: 1px; background: var(--surface-2); }
tr:last-child td { border-bottom: none; }

/* ============== Auth pages ============== */
.auth-page {
  min-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
}
.auth-card { width: 100%; max-width: 380px; }
.auth-masthead { text-align: center; margin-bottom: 22px; }
.auth-masthead p { margin: 0; font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--dim); font-family: var(--mono); }
.form-error {
  border: 1px solid var(--req);
  background: rgba(156, 51, 18, .06);
  color: var(--req);
  border-radius: var(--r);
  padding: 10px 12px;
  font-size: 13px;
  margin-bottom: 16px;
  display: none;
  text-align: center;
}
.form-error.show { display: block; }
.auth-card fieldset button.act { width: 100%; margin-top: 16px; }

/* ============== Dashboard ============== */
.dash-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 40px 0 22px;
}
.dash-header h1 { font-size: 24px; margin: 0; letter-spacing: -0.01em; font-weight: 800; }
.hint-banner {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--dim);
  border-radius: var(--r);
  padding: 11px 16px;
  font-size: 13px;
  margin-bottom: 22px;
  box-shadow: var(--shadow-sm);
}
.device-table-wrap {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
}
.device-table-wrap table { margin: 0; min-width: 640px; }
.device-table-wrap th, .device-table-wrap td { padding: 13px 16px; }
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 10.5px;
  letter-spacing: .5px;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 999px;
  font-weight: 500;
  border: 1px solid transparent;
}
.status-pill.online { color: #4f7a1e; background: rgba(79,122,30,.10); }
.status-pill.offline { color: var(--req); background: rgba(156,51,18,.08); }
.status-pill.unknown { color: var(--dim); background: rgba(92,98,73,.10); }
.status-pill .dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.row-actions { display: flex; gap: 6px; }
.row-actions button {
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--dim);
  border-radius: 999px;
  padding: 5px 12px;
  font: inherit;
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color .12s ease, color .12s ease;
}
.row-actions button:hover { border-color: var(--accent); color: var(--accent-ink); }
.empty-state { text-align: center; padding: 64px 20px; color: var(--dim); font-size: 14px; }

.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(20, 22, 14, 0.5);
  backdrop-filter: blur(2px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 20px;
}
.modal-backdrop.show { display: flex; }
.modal {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 26px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-lg);
}
.modal h2 {
  font-size: 18px; margin: 0 0 18px; padding: 0; border: 0;
  letter-spacing: -0.01em; font-weight: 800;
}
.modal fieldset { background: transparent; border: 0; padding: 0; margin: 0; box-shadow: none; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }
.modal-actions .act { width: auto; margin-top: 0; }