/* Infinitech single-page app. Brand values come from docs/brand/assets/brand-tokens.css. */

:root {
  --navy: #071A2B;
  --cloud-blue: #32B7E9;
  --cloud-white: #F4F7FA;

  --font: Inter, "Helvetica Neue", "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
  --mono: "JetBrains Mono", "SF Mono", ui-monospace, Menlo, Consolas, monospace;

  --radius: 10px;
  --radius-sm: 6px;
  --gap: 20px;
  --topbar-h: 64px;
  --bottombar-h: 68px;
  --max: 1360px;
}

/* Light theme */
:root,
:root[data-theme="light"] {
  --canvas: #EEF2F6;
  --canvas-grid: rgba(7, 26, 43, 0.045);
  --surface: #FFFFFF;
  --surface-edge: rgba(7, 26, 43, 0.10);
  --surface-shadow: 0 1px 2px rgba(7, 26, 43, 0.06), 0 6px 20px rgba(7, 26, 43, 0.05);
  --well: #F3F6F9;
  --well-edge: rgba(7, 26, 43, 0.08);
  --ink: #0B1F31;
  --ink-2: #3D4F60;
  --ink-3: #5A6B7B;
  --accent: #0B6E9A;
  --accent-strong: #095A7E;
  --on-accent: #FFFFFF;
  --focus: #0B6E9A;
  --live-bg: rgba(31, 135, 84, 0.12);   --live-ink: #17663F;
  --dev-bg: rgba(176, 112, 18, 0.13);   --dev-ink: #7E4F08;
  --point-bg: rgba(14, 127, 176, 0.12); --point-ink: #0A5E83;
  --none-bg: rgba(7, 26, 43, 0.07);     --none-ink: #4A5B6B;
  --bar-bg: rgba(255, 255, 255, 0.88);
}

/* Dark theme */
:root[data-theme="dark"] {
  --canvas: #071A2B;
  --canvas-grid: rgba(244, 247, 250, 0.035);
  --surface: #0C2639;
  --surface-edge: rgba(244, 247, 250, 0.10);
  --surface-shadow: 0 1px 0 rgba(244, 247, 250, 0.04) inset, 0 10px 30px rgba(0, 0, 0, 0.28);
  --well: #081D2E;
  --well-edge: rgba(244, 247, 250, 0.07);
  --ink: #F4F7FA;
  --ink-2: rgba(244, 247, 250, 0.80);
  --ink-3: rgba(244, 247, 250, 0.64);
  --accent: #32B7E9;
  --accent-strong: #5CC7EF;
  --on-accent: #071A2B;
  --focus: #5CC7EF;
  --live-bg: rgba(79, 174, 115, 0.16);  --live-ink: #86D6A3;
  --dev-bg: rgba(232, 163, 61, 0.16);   --dev-ink: #F2C27A;
  --point-bg: rgba(50, 183, 233, 0.15); --point-ink: #8AD6F3;
  --none-bg: rgba(244, 247, 250, 0.08); --none-ink: rgba(244, 247, 250, 0.72);
  --bar-bg: rgba(7, 26, 43, 0.90);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--topbar-h) + 12px); }
body {
  margin: 0;
  font: 400 16px/1.55 var(--font);
  color: var(--ink);
  background-color: var(--canvas);
  background-image:
    linear-gradient(var(--canvas-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--canvas-grid) 1px, transparent 1px);
  background-size: 32px 32px;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
img, video, svg { display: block; max-width: 100%; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent-strong); }
h1, h2, h3 { margin: 0; line-height: 1.2; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.6rem, 1.2rem + 1.4vw, 2.15rem); font-weight: 650; }
h2 { font-size: 1.05rem; font-weight: 650; margin-bottom: 14px; }
h3 { font-size: 1rem; font-weight: 600; }
p { margin: 0 0 12px; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 4px; }
h1:focus { outline: none; }

.skip { position: absolute; left: -9999px; top: 8px; z-index: 100; background: var(--surface); padding: 8px 12px; }
.skip:focus { left: 8px; }

/* ---------- Top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: var(--bar-bg);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--surface-edge);
}
.topbar__inner {
  max-width: var(--max); margin: 0 auto; height: var(--topbar-h);
  display: flex; align-items: center; gap: 24px; padding: 0 20px;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand__mark { width: 30px; height: 30px; }
.brand__word { font-weight: 600; font-size: 15px; letter-spacing: 0.26em; }

.tabs { display: flex; gap: 4px; }
.tabs a {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 14px; border-radius: 8px;
  color: var(--ink-2); text-decoration: none; font-weight: 500; font-size: 15px;
}
.tabs a svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linejoin: round; stroke-linecap: round; }
.tabs a:hover { color: var(--ink); background: var(--well); }
.tabs a[aria-current="page"] { color: var(--ink); background: var(--well); box-shadow: inset 0 0 0 1px var(--well-edge); }

.topbar__actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.icon-btn {
  width: 40px; height: 40px; display: grid; place-items: center;
  border-radius: 8px; border: 1px solid var(--surface-edge);
  background: var(--surface); color: var(--ink); cursor: pointer; font: inherit;
}
.icon-btn svg { width: 19px; height: 19px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; }
.icon-btn .i-moon { fill: currentColor; stroke: none; }
:root[data-theme="dark"] .icon-btn .i-moon,
:root:not([data-theme="dark"]) .icon-btn .i-sun { display: none; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 42px; padding: 0 18px; border-radius: 8px;
  font: 600 15px/1 var(--font); text-decoration: none; cursor: pointer;
  border: 1px solid transparent;
}
.btn--primary { background: var(--accent); color: var(--on-accent); }
.btn--primary:hover { background: var(--accent-strong); color: var(--on-accent); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--surface-edge); }
.btn--ghost:hover { background: var(--well); color: var(--ink); }

/* ---------- Layout ---------- */
main { max-width: var(--max); margin: 0 auto; padding: 24px 20px 32px; }
.grid { display: grid; gap: var(--gap); grid-template-columns: repeat(12, minmax(0, 1fr)); }
.card {
  grid-column: span 12;
  background: var(--surface);
  border: 1px solid var(--surface-edge);
  border-radius: var(--radius);
  box-shadow: var(--surface-shadow);
  padding: 24px;
  min-width: 0;
}
.well { background: var(--well); border: 1px solid var(--well-edge); border-radius: var(--radius-sm); }

.grid--home {
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  grid-template-areas: "hero hero" "start services" "labels principles";
}
.card--hero { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 32px; align-items: center; }
.hero__text .lede { margin-bottom: 20px; }
.grid--home .card { grid-column: auto; }
.grid--home .card--hero { grid-area: hero; }
.grid--home .card--start { grid-area: start; }
.grid--home .card--labels { grid-area: labels; }
.grid--home .card--services { grid-area: services; }
.grid--home .card--principles { grid-area: principles; }

.grid--imclz .card--intro { grid-column: span 7; }
.grid--imclz .card--measured { grid-column: span 5; }
.grid--imclz .card--inspector { grid-column: span 12; }
.grid--imclz .card--engage { grid-column: span 12; }

.grid--contact .card--form { grid-column: span 8; }
.grid--contact .card--include { grid-column: span 4; align-self: start; }

/* JS on: one view at a time. JS off: all views stack. */
.js .view { display: none; }
.js .view.is-active { display: block; animation: view-in 220ms ease-out; }
.view + .view { margin-top: var(--gap); }
.js .view + .view { margin-top: 0; }
@keyframes view-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* ---------- Type helpers ---------- */
.eyebrow { font: 500 12px/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 14px; }
.lede { color: var(--ink-2); font-size: 1.04rem; max-width: 62ch; margin: 12px 0 18px; }
.fine { font-size: 13px; color: var(--ink-3); margin: 12px 0 0; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; }

.tag {
  display: inline-flex; align-items: center; white-space: nowrap;
  font: 500 11px/1 var(--mono); letter-spacing: 0.04em; text-transform: uppercase;
  padding: 5px 8px; border-radius: 999px;
}
.tag--live { background: var(--live-bg); color: var(--live-ink); }
.tag--dev { background: var(--dev-bg); color: var(--dev-ink); }
.tag--point { background: var(--point-bg); color: var(--point-ink); }
.tag--none { background: var(--none-bg); color: var(--none-ink); }

/* ---------- Media ---------- */
.media { margin: 0; }
.media__play {
  position: relative; display: block; width: 100%; padding: 0; border: 0; cursor: pointer;
  border-radius: var(--radius-sm); overflow: hidden; background: #04121F; aspect-ratio: 16 / 9;
}
.media__play img { width: 100%; height: 100%; object-fit: cover; opacity: 0.92; transition: opacity 160ms; }
.media__play:hover img { opacity: 1; }
.media__badge {
  position: absolute; left: 14px; top: 14px; display: inline-flex; align-items: center; gap: 8px;
  background: rgba(7, 26, 43, 0.86); color: #F4F7FA; padding: 9px 14px 9px 10px; border-radius: 999px;
  font: 600 14px/1 var(--font);
}
.media__badge svg { width: 18px; height: 18px; fill: #32B7E9; }
.media video { width: 100%; aspect-ratio: 16 / 9; border-radius: var(--radius-sm); background: #04121F; }

/* ---------- Start-here rows ---------- */
.rows { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.row {
  display: grid; grid-template-columns: 40px 1fr auto; align-items: center; gap: 14px;
  padding: 12px 14px; border-radius: 8px; text-decoration: none; color: var(--ink);
  background: var(--well); border: 1px solid var(--well-edge);
  transition: border-color 140ms, transform 140ms;
}
.row:hover { border-color: var(--accent); color: var(--ink); }
.row__icon { width: 40px; height: 40px; border-radius: 8px; display: grid; place-items: center; background: var(--navy); }
.row__icon svg { width: 20px; height: 20px; fill: none; stroke: #32B7E9; stroke-width: 1.8; stroke-linejoin: round; stroke-linecap: round; }
.row__icon svg path[d^="M8 5v14"] { fill: #32B7E9; stroke: none; }
.row__text strong { display: block; font-weight: 600; font-size: 15px; }
.row__text small { display: block; color: var(--ink-3); font-size: 13.5px; }
.row__chev { color: var(--ink-3); font-size: 22px; line-height: 1; }

/* ---------- Services ---------- */
.svc { border-bottom: 1px solid var(--well-edge); }
.svc:last-child { border-bottom: 0; }
.svc summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px 16px; font-weight: 600;
}
.svc summary::-webkit-details-marker { display: none; }
.svc summary::before { content: "›"; color: var(--ink-3); margin-right: 2px; transition: transform 160ms; display: inline-block; }
.svc[open] summary::before { transform: rotate(90deg); }
.svc__name { flex: 1; }
.svc p { padding: 0 16px 14px 30px; color: var(--ink-2); margin: 0; }

/* ---------- Principles + legend ---------- */
.principles { margin: 0; display: grid; gap: 16px; }
.principles div { padding-left: 14px; border-left: 2px solid var(--accent); }
.principles dt { font-weight: 600; }
.principles dd { margin: 4px 0 0; color: var(--ink-2); font-size: 15px; }
.legend { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 20px; }
.legend li { display: flex; flex-direction: column; align-items: flex-start; gap: 6px; color: var(--ink-2); font-size: 14.5px; }

/* ---------- Measured ---------- */
.stats { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.stats li {
  display: flex; flex-direction: column; align-items: flex-start; gap: 6px;
  padding: 12px 14px; background: var(--well); border: 1px solid var(--well-edge); border-radius: 8px;
}
.stat { font: 600 22px/1.1 var(--mono); color: var(--ink); }
.stat__label { font-size: 13.5px; line-height: 1.4; color: var(--ink-2); flex: 1; }

/* ---------- Stage player (video left, stage playlist right) ---------- */
.player { display: grid; grid-template-columns: minmax(0, 1fr) 380px; gap: 24px; align-items: start; }
.stage-media { margin: 0; }
.stage-media video { width: 100%; aspect-ratio: 16 / 9; border-radius: 8px; background: #04121F; display: block; }
.player__bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 10px 0 14px; }
.player__bar .fine { margin: 0; }
.player__controls { display: flex; gap: 8px; flex: none; }
.btn--sm { min-height: 36px; padding: 0 12px; font-size: 14px; }
.theatre-btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.7; }
.theatre-btn[aria-pressed="true"] { background: var(--well); border-color: var(--accent); }

.stage-panels { background: var(--well); border: 1px solid var(--well-edge); border-radius: var(--radius-sm); padding: 18px 20px; }
.stage h3 { font-size: 1.15rem; margin-bottom: 10px; }
.stage p { color: var(--ink-2); font-size: 15.5px; max-width: 80ch; }
.stage p:last-child { margin-bottom: 0; }
.stage .proof { font: 400 13px/1.5 var(--mono); padding: 8px 10px; border-radius: 6px; background: var(--point-bg); display: inline-block; }
.stage .limit { font-size: 14.5px; color: var(--ink-3); border-top: 1px dashed var(--well-edge); padding-top: 10px; }
.stage .limit strong { color: var(--ink-2); }
.js .stage[hidden] { display: none; }

.playlist h2 { margin-bottom: 10px; }
.stage-list { position: relative; display: flex; flex-direction: column; gap: 6px; }
.stage-list button {
  display: grid; grid-template-columns: 152px minmax(0, 1fr); gap: 12px; align-items: start; text-align: left;
  padding: 6px; border-radius: 8px; border: 1px solid transparent; background: transparent;
  color: var(--ink-2); font: inherit; cursor: pointer;
}
.stage-list button:hover { background: var(--well); color: var(--ink); }
.stage-list button[aria-selected="true"] { background: var(--well); border-color: var(--accent); color: var(--ink); }
.thumb { position: relative; display: block; border-radius: 6px; overflow: hidden; background: #04121F; aspect-ratio: 16 / 9; }
.thumb img { width: 100%; height: 100%; object-fit: cover; }
.thumb__dur { position: absolute; right: 5px; bottom: 5px; padding: 2px 5px; border-radius: 4px; background: rgba(4, 18, 31, 0.86); color: #F4F7FA; font: 500 11px/1.2 var(--mono); }
.stage-list button[aria-selected="true"] .thumb { outline: 2px solid var(--accent); outline-offset: -2px; }
.pl__text strong { display: block; font-size: 14.5px; font-weight: 600; color: var(--ink); line-height: 1.3; }
.pl__text small { display: block; margin-top: 3px; font-size: 13px; line-height: 1.35; color: var(--ink-3); }

/* Theatre mode: video takes the card width, stages move underneath. */
.player.is-theatre { grid-template-columns: minmax(0, 1fr); }
.player.is-theatre .stage-list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.player.is-theatre .stage-list button { grid-template-columns: 1fr; gap: 8px; }

html:not(.js) .stage-media, html:not(.js) .player__bar { display: none; }
html:not(.js) .player { grid-template-columns: 1fr; }
html:not(.js) .stage + .stage { margin-top: 18px; }

/* ---------- Engagements ---------- */
.card--engage .well { display: grid; grid-template-columns: 1.4fr 1fr; }
.engage { padding: 16px 18px; }
.engage + .engage { border-left: 1px solid var(--well-edge); }
.engage h3 small { display: block; margin-top: 4px; font: 500 12px/1.3 var(--mono); color: var(--ink-3); text-transform: uppercase; letter-spacing: 0.06em; }
.engage p { color: var(--ink-2); margin-top: 10px; }
.ticks { list-style: none; margin: 10px 0 0; padding: 0; display: grid; gap: 7px; }
.ticks li { position: relative; padding-left: 22px; color: var(--ink-2); font-size: 15px; }
.ticks li::before { content: ""; position: absolute; left: 2px; top: 8px; width: 9px; height: 5px; border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent); transform: rotate(-45deg); }
.excl { margin-top: 14px; border: 1px solid var(--well-edge); border-radius: var(--radius-sm); }
.excl summary { cursor: pointer; padding: 12px 16px; font-weight: 600; }
.excl ul { margin: 0; padding: 0 16px 14px 36px; color: var(--ink-2); columns: 2; column-gap: 28px; }
.excl li { margin-bottom: 6px; break-inside: avoid; }

/* ---------- Contact ---------- */
.preview-note { font-size: 13.5px; color: var(--dev-ink); background: var(--dev-bg); padding: 8px 12px; border-radius: 6px; }
form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 16px; margin-top: 8px; }
.field { display: grid; gap: 6px; }
.field--wide, .form-foot { grid-column: 1 / -1; }
label { font-weight: 600; font-size: 14px; }
label small { font-weight: 400; color: var(--ink-3); }
input, select, textarea {
  font: inherit; color: var(--ink); background: var(--well); border: 1px solid var(--surface-edge);
  border-radius: 8px; padding: 10px 12px; width: 100%;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--focus); outline-offset: 0; border-color: transparent; }
[aria-invalid="true"] { border-color: #D2635F; }
.form-foot { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.form-status { margin: 0; font-size: 14.5px; }
.form-status.ok { color: var(--live-ink); }
.form-status.err { color: #D2635F; }

/* ---------- Footer + dialog ---------- */
.foot { max-width: var(--max); margin: 0 auto; padding: 0 20px 28px; }
.foot p { font-size: 12.5px; color: var(--ink-3); max-width: 90ch; margin: 0; }
dialog {
  width: min(960px, calc(100vw - 32px)); padding: 18px; border-radius: var(--radius);
  border: 1px solid var(--surface-edge); background: var(--surface); color: var(--ink);
}
dialog::backdrop { background: rgba(4, 18, 31, 0.72); }
.dialog__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.dialog__head h2 { margin: 0; }
dialog video { width: 100%; aspect-ratio: 16 / 9; border-radius: 6px; background: #04121F; }

/* ---------- Theme transition (View Transitions API) ---------- */
::view-transition-old(root), ::view-transition-new(root) { animation: none; mix-blend-mode: normal; }

/* ---------- Tablet ---------- */
@media (max-width: 1023px) {
  .grid--home { grid-template-columns: minmax(0, 1fr); grid-template-areas: "hero" "start" "services" "principles" "labels"; }
  .card--hero { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .grid--imclz .card--intro, .grid--imclz .card--measured { grid-column: span 12; }
  .grid--contact .card--form, .grid--contact .card--include { grid-column: span 12; }
  .player, .player.is-theatre { grid-template-columns: minmax(0, 1fr); }
  .theatre-btn { display: none; }
  .player .stage-list, .player.is-theatre .stage-list {
    display: flex; flex-direction: row; overflow-x: auto; gap: 10px; padding-bottom: 6px;
    scroll-snap-type: x proximity; scrollbar-width: thin;
  }
  .player .stage-list button { flex: none; width: 196px; grid-template-columns: 1fr; gap: 8px; scroll-snap-align: start; }
  .principles { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- Phone ---------- */
@media (max-width: 719px) {
  :root { --gap: 14px; --topbar-h: 56px; }
  main { padding: 14px 14px calc(var(--bottombar-h) + 24px + env(safe-area-inset-bottom)); }
  .foot { padding: 0 14px calc(var(--bottombar-h) + 20px + env(safe-area-inset-bottom)); }
  .js main + .foot { margin-top: -8px; }
  .card { padding: 18px; }
  .topbar__inner { padding: 0 14px; gap: 12px; }
  .topbar__cta { display: none; }
  .brand__word { font-size: 14px; }
  .tabs {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 30;
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 0;
    padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
    background: var(--bar-bg); border-top: 1px solid var(--surface-edge);
    backdrop-filter: saturate(140%) blur(10px); -webkit-backdrop-filter: saturate(140%) blur(10px);
  }
  .tabs a { flex-direction: column; gap: 4px; padding: 8px 4px; font-size: 12px; min-height: 52px; justify-content: center; }
  .tabs a svg { width: 22px; height: 22px; }
  .tabs a[aria-current="page"] { background: transparent; box-shadow: none; color: var(--accent); }
  .principles, .legend { grid-template-columns: 1fr; }
  .card--engage .well { grid-template-columns: 1fr; }
  .engage + .engage { border-left: 0; border-top: 1px solid var(--well-edge); }
  .excl ul { columns: 1; }
  form { grid-template-columns: 1fr; }
  .stat { font-size: 19px; }
  .topbar { backdrop-filter: none; -webkit-backdrop-filter: none; background: var(--canvas); }
  .grid--imclz .card--inspector { order: 1; }
  .grid--imclz .card--measured { order: 2; }
  .grid--imclz .card--engage { order: 3; }
  .stage-panels { padding: 14px; }
  .player__bar .fine { display: none; }
  .player__bar { justify-content: flex-end; }
  .player .stage-list button { width: 168px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

@media print {
  .topbar, .stage-media, .player__bar, .playlist, dialog, .media { display: none !important; }
  .js .view, .js .stage[hidden] { display: block !important; }
  body { background: #fff; color: #000; }
  .card { box-shadow: none; break-inside: avoid; }
}