/* Syns Workspace UI: the reference implementation of DESIGN.md's components.
   Copy this file next to a site's own tokens.css (link tokens.css first); never link it across sites.
   Built from the Google Workspace / Drive reference (work/brand-google-reference-2026-10-18/), in Syns colours,
   with the laser frame from syns.app. */

@font-face { font-family: "Inter"; src: url("fonts/inter.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("fonts/jetbrains-mono.woff2") format("woff2"); font-weight: 100 800; font-display: swap; }
@property --ang { syntax: "<angle>"; inherits: false; initial-value: 0deg; }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--color-paper); color: var(--color-ink);
  font-family: var(--font-body); font-size: var(--text-body); line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 2px; }
code, kbd, .mono { font-family: var(--font-mono); font-size: var(--text-mono); }
.ico { width: 24px; height: 24px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
.ico.s20 { width: 20px; height: 20px; } .ico.s18 { width: 18px; height: 18px; } .ico.s16 { width: 16px; height: 16px; }

/* ---------- type roles ---------- */
.t-display { font: var(--font-weight-display) var(--text-display)/var(--leading-display) var(--font-display); letter-spacing: var(--tracking-display); margin: 0; }
.t-headline { font: var(--font-weight-headline) var(--text-headline)/var(--leading-headline) var(--font-headline); letter-spacing: var(--tracking-headline); margin: 0; }
.t-title-l { font: var(--font-weight-title-l) var(--text-title-l)/var(--leading-title-l) var(--font-title-l); letter-spacing: var(--tracking-title-l); margin: 0; }
.t-title { font: var(--font-weight-title) var(--text-title)/var(--leading-title) var(--font-title); letter-spacing: var(--tracking-title); margin: 0; }
.t-title-s { font: var(--font-weight-title-s) var(--text-title-s)/var(--leading-title-s) var(--font-title-s); letter-spacing: var(--tracking-title-s); margin: 0; }
.t-lead { font: var(--font-weight-lead) var(--text-lead)/var(--leading-lead) var(--font-lead); color: var(--color-ink-2); margin: 0; }
.t-body { font: var(--font-weight-body) var(--text-body)/var(--leading-body) var(--font-body); margin: 0; }
.t-ui { font: var(--font-weight-ui) var(--text-ui)/var(--leading-ui) var(--font-ui); margin: 0; }
.t-label { font: var(--font-weight-label) var(--text-label)/var(--leading-label) var(--font-label); margin: 0; }
.t-label-s { font: var(--font-weight-label-s) var(--text-label-s)/var(--leading-label-s) var(--font-label-s); letter-spacing: var(--tracking-label-s); margin: 0; }
.eyebrow { font: 600 var(--text-label-s)/1.4 var(--font-label-s); letter-spacing: .12em; text-transform: uppercase; color: var(--color-primary); }
.muted { color: var(--color-muted); } .ink-2 { color: var(--color-ink-2); }
@media (max-width: 720px) {
  .t-display { font-size: 2.375rem; }
  .t-headline { font-size: 2rem; }
}

/* ---------- state layer: hover 8 %, pressed 12 % of the content colour ---------- */
.sl { position: relative; isolation: isolate; }
.sl::after { content: ""; position: absolute; inset: 0; border-radius: inherit; background: currentColor; opacity: 0; pointer-events: none; transition: opacity 15ms linear; z-index: -1; }
.sl:hover::after { opacity: var(--state-hover); }
.sl:active::after { opacity: var(--state-pressed); }

/* ---------- buttons: every action is a full pill ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: var(--spacing-control); padding: 0 24px; border-radius: var(--radius-pill); border: 0;
  font: var(--font-weight-label) var(--text-label)/1 var(--font-label); cursor: pointer; white-space: nowrap;
  position: relative; isolation: isolate; text-decoration: none !important;
  transition: box-shadow var(--duration-s) var(--ease-standard), background-color var(--duration-s) var(--ease-standard);
}
.btn::after { content: ""; position: absolute; inset: 0; border-radius: inherit; background: currentColor; opacity: 0; transition: opacity 15ms linear; z-index: -1; }
.btn:hover::after { opacity: var(--state-hover); }
.btn:active::after { opacity: var(--state-pressed); }
.btn .ico { width: 18px; height: 18px; margin-left: -6px; }
.btn-filled { background: var(--color-fill); color: var(--color-on-fill); }
.btn-filled:hover { box-shadow: var(--shadow-1); }
.btn-tonal { background: var(--color-select); color: var(--color-on-select); }
.btn-tonal:hover { box-shadow: var(--shadow-1); }
.btn-outlined { background: transparent; color: var(--color-primary); box-shadow: inset 0 0 0 1px var(--color-outline); }
.btn-text { background: transparent; color: var(--color-primary); padding: 0 12px; }
.btn-lg { height: 48px; padding: 0 28px; font-size: var(--text-body); }
.btn-sm { height: 36px; padding: 0 16px; }
.btn[disabled] { opacity: .38; pointer-events: none; box-shadow: none; }
.icon-btn {
  width: 40px; height: 40px; border-radius: 50%; border: 0; background: transparent; color: var(--color-ink-2);
  display: inline-grid; place-items: center; cursor: pointer; position: relative; isolation: isolate; flex: none;
}
.icon-btn::after { content: ""; position: absolute; inset: 0; border-radius: inherit; background: currentColor; opacity: 0; z-index: -1; }
.icon-btn:hover::after { opacity: var(--state-hover); }

/* ---------- the New button (FAB) ---------- */
.fab {
  display: inline-flex; align-items: center; gap: 12px; height: 56px; min-width: 100px; padding: 0 20px 0 16px;
  border: 0; border-radius: var(--radius-fab); background: var(--color-paper); color: var(--color-ink);
  font: var(--font-weight-label) var(--text-label)/1 var(--font-label); box-shadow: var(--shadow-fab); cursor: pointer;
  position: relative; isolation: isolate; transition: box-shadow 80ms linear;
}
.fab::after { content: ""; position: absolute; inset: 0; border-radius: inherit; background: var(--color-primary); opacity: 0; z-index: -1; transition: opacity 80ms linear; }
.fab:hover { box-shadow: var(--shadow-2); }
.fab:hover::after { opacity: .08; }
.fab .ico { color: var(--color-ink); }

/* ---------- the laser: the blue line from syns.app. It means "live" ---------- */
.laser { position: relative; isolation: isolate; }
.laser::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1.5px; pointer-events: none; z-index: 3;
  background: conic-gradient(from var(--ang), transparent 0 62%, var(--color-primary-2) 80%, var(--color-primary) 86%, transparent 96%), linear-gradient(var(--color-line), var(--color-line));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); mask-composite: exclude;
  animation: laser-spin var(--duration-laser) linear infinite;
}
.laser.lit, .laser-hover:hover, .laser-focus:focus-within { box-shadow: 0 0 70px -18px var(--color-glow); }
.laser-hover, .laser-focus { position: relative; isolation: isolate; transition: box-shadow .6s; }
.laser-hover::before, .laser-focus::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; pointer-events: none; z-index: 3;
  background: linear-gradient(var(--color-line), var(--color-line));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); mask-composite: exclude;
}
.laser-hover.bare::before, .laser-focus.bare::before { background: transparent; }
.laser-hover:hover::before, .laser-focus:focus-within::before {
  padding: 1.5px;
  background: conic-gradient(from var(--ang), transparent 0 62%, var(--color-primary-2) 80%, var(--color-primary) 86%, transparent 96%), linear-gradient(var(--color-line), var(--color-line));
  animation: laser-spin var(--duration-laser) linear infinite;
}
.laser-rule { height: 1px; border: 0; margin: 0; background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--color-primary) 55%, transparent) 40%, var(--color-primary-2) 50%, transparent 90%); }
@keyframes laser-spin { to { --ang: 360deg; } }
@media (prefers-reduced-motion: reduce) {
  .laser::before, .laser-hover:hover::before, .laser-focus:focus-within::before { animation: none; background: linear-gradient(var(--color-primary), var(--color-primary)); padding: 1px; }
}

/* ---------- search: a tonal pill, white and lasered on focus ---------- */
.search {
  min-width: 0; display: flex; align-items: center; gap: 8px; height: 48px; width: 100%; max-width: 720px; padding: 0 8px 0 12px;
  border-radius: var(--radius-pill); background: var(--color-surface-high); color: var(--color-ink-2);
  transition: background-color .1s, box-shadow .1s;
}
.search input { flex: 1; min-width: 0; border: 0; background: transparent; outline: none; color: var(--color-ink); font: 400 var(--text-body)/1.5 var(--font-body); }
.search input::placeholder { color: var(--color-ink-2); }
.search:focus-within { background: var(--color-paper); box-shadow: var(--shadow-1); }

/* ---------- side navigation ---------- */
.nav { display: flex; flex-direction: column; gap: 2px; }
.nav a, .nav button {
  display: flex; align-items: center; gap: 16px; height: 32px; padding: 0 16px 0 12px; border: 0; border-radius: var(--radius-pill);
  background: transparent; color: var(--color-ink); font: var(--font-weight-ui) var(--text-ui)/1 var(--font-ui);
  text-decoration: none; cursor: pointer; position: relative; isolation: isolate; text-align: left;
}
.nav a::after, .nav button::after { content: ""; position: absolute; inset: 0; border-radius: inherit; background: currentColor; opacity: 0; z-index: -1; }
.nav a:hover::after, .nav button:hover::after { opacity: var(--state-hover); }
.nav a .ico, .nav button .ico { width: 20px; height: 20px; color: var(--color-ink-2); }
.nav [aria-current="page"] { background: var(--color-select); color: var(--color-on-select); font-weight: 600; }
.nav [aria-current="page"] .ico { color: var(--color-on-select); stroke-width: 2.1; }
.nav-sep { height: 12px; }
.storage { padding: 12px 16px; font: var(--font-weight-ui) .8125rem/1.4 var(--font-ui); color: var(--color-ink-2); }
.storage .bar { height: 4px; border-radius: 4px; background: var(--color-surface-highest); margin: 8px 0 6px; overflow: hidden; }
.storage .bar i { display: block; height: 100%; width: 22%; background: var(--color-primary); border-radius: inherit; }

/* ---------- chips and the segmented toggle ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex; align-items: center; gap: 8px; height: 32px; padding: 0 12px 0 16px; border: 0; border-radius: var(--radius-chip);
  background: transparent; color: var(--color-ink-2); box-shadow: inset 0 0 0 1px var(--color-outline);
  font: var(--font-weight-label) var(--text-label)/1 var(--font-label); cursor: pointer; position: relative; isolation: isolate;
}
.chip::after { content: ""; position: absolute; inset: 0; border-radius: inherit; background: currentColor; opacity: 0; z-index: -1; }
.chip:hover::after { opacity: var(--state-hover); }
.chip .ico { width: 18px; height: 18px; }
.chip[aria-pressed="true"] { background: var(--color-select); color: var(--color-on-select); box-shadow: none; }
.tag { display: inline-flex; align-items: center; height: 24px; padding: 0 10px; border-radius: var(--radius-pill); background: var(--color-primary-wash); color: var(--color-on-primary-wash); font: 600 .75rem/1 var(--font-label-s); }
.tag.good { background: var(--color-good-wash); color: var(--color-on-good-wash); }
.seg { display: inline-flex; height: 32px; border-radius: var(--radius-pill); box-shadow: inset 0 0 0 1px var(--color-outline); overflow: hidden; }
.seg button { width: 56px; border: 0; background: transparent; color: var(--color-ink-2); display: grid; place-items: center; cursor: pointer; }
.seg button + button { box-shadow: inset 1px 0 0 var(--color-outline); }
.seg button[aria-pressed="true"] { background: var(--color-select); color: var(--color-on-select); }
.seg .ico { width: 18px; height: 18px; }

/* ---------- surfaces ---------- */
.canvas { background: var(--color-canvas); }
.landmark { background: var(--color-paper); border-radius: var(--radius-landmark); }
.card { background: var(--color-surface); border-radius: var(--radius-card); padding: 24px; }
.card-paper { background: var(--color-paper); border-radius: var(--radius-card); padding: 24px; box-shadow: inset 0 0 0 1px var(--color-line); }

/* ---------- the file list ---------- */
.list { width: 100%; border-collapse: collapse; font: var(--font-weight-ui) var(--text-ui)/1 var(--font-ui); }
.list th { height: var(--spacing-row); text-align: left; font-weight: var(--font-weight-label); color: var(--color-ink-2); padding: 0 12px; border-bottom: 1px solid var(--color-divider); white-space: nowrap; }
.list td { height: var(--spacing-row); padding: 0 12px; color: var(--color-ink-2); border-bottom: 1px solid var(--color-divider); white-space: nowrap; }
.list td:first-child, .list th:first-child { padding-left: 20px; }
.list tbody tr { position: relative; cursor: default; }
.list tbody tr:hover td { background: color-mix(in srgb, var(--color-ink) 8%, transparent); }
.list tbody tr[aria-selected="true"] td { background: var(--color-select); color: var(--color-on-select); border-bottom-color: transparent; }
.list .name { display: flex; align-items: center; gap: 16px; color: var(--color-ink); font-weight: var(--font-weight-label); }
.list tr[aria-selected="true"] .name { color: var(--color-on-select); }
.list .acts { opacity: 0; display: inline-flex; gap: 0; transition: opacity var(--duration-s); }
.list tr:hover .acts, .list tr[aria-selected="true"] .acts { opacity: 1; }
.list .acts .icon-btn { width: 32px; height: 32px; }
.avatar { width: 24px; height: 24px; border-radius: 50%; display: inline-grid; place-items: center; color: #fff; font: 700 .6875rem/1 var(--font-label); flex: none; }
.who { display: inline-flex; align-items: center; gap: 8px; }

/* ---------- grid: folder tiles and file cards, flat and tonal ---------- */
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; }
.tile { display: flex; align-items: center; gap: 12px; height: 48px; padding: 0 4px 0 16px; border-radius: var(--radius-card); background: var(--color-surface); color: var(--color-ink); font: var(--font-weight-label) var(--text-label)/1 var(--font-label); position: relative; isolation: isolate; cursor: default; }
.tile::after, .fcard::after { content: ""; position: absolute; inset: 0; border-radius: inherit; background: var(--color-ink); opacity: 0; z-index: -1; }
.tile:hover::after, .fcard:hover::after { opacity: .06; }
.tile span { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tile[aria-selected="true"], .fcard[aria-selected="true"] { background: var(--color-select); color: var(--color-on-select); box-shadow: inset 0 0 0 2px var(--color-primary); }
.fcard { display: flex; flex-direction: column; aspect-ratio: 1; border-radius: var(--radius-card); background: var(--color-surface); position: relative; isolation: isolate; }
.fcard header { display: flex; align-items: center; gap: 12px; height: 48px; padding: 0 4px 0 16px; font: var(--font-weight-label) var(--text-label)/1 var(--font-label); }
.fcard header span { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.fcard .thumb { flex: 1; margin: 0 8px 8px; border-radius: var(--radius-thumb); background: var(--color-paper); overflow: hidden; display: grid; place-items: center; }

/* ---------- pop-ups: menu, dialog, tooltip, snackbar ---------- */
.menu { min-width: 240px; padding: 8px 0; border-radius: var(--radius-menu); background: var(--color-surface); box-shadow: var(--shadow-2); font: var(--font-weight-ui) var(--text-ui)/1 var(--font-ui); }
.menu button, .menu a { display: flex; align-items: center; gap: 16px; width: 100%; height: 32px; padding: 0 16px 0 12px; border: 0; background: transparent; color: var(--color-ink); font: inherit; text-align: left; cursor: pointer; position: relative; isolation: isolate; text-decoration: none; }
.menu button::after, .menu a::after { content: ""; position: absolute; inset: 0; background: currentColor; opacity: 0; z-index: -1; }
.menu button:hover::after, .menu a:hover::after { opacity: var(--state-hover); }
.menu .ico { width: 20px; height: 20px; color: var(--color-ink-2); }
.menu kbd { margin-left: auto; color: var(--color-muted); font: 400 .75rem/1 var(--font-ui); }
.menu hr { border: 0; height: 1px; background: var(--color-divider); margin: 8px 0; }
.menu .grp { padding: 8px 16px 4px; font: var(--font-weight-label-s) .6875rem/1.45 var(--font-label-s); color: var(--color-ink-2); }
.dialog { width: min(512px, 100%); padding: 24px; border-radius: var(--radius-dialog); background: var(--color-paper); box-shadow: var(--shadow-3); }
.dialog h3 { margin: 0 0 16px; font: var(--font-weight-title) var(--text-title)/var(--leading-title) var(--font-title); letter-spacing: var(--tracking-title); }
.dialog .actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 24px; }
.tooltip { display: inline-block; padding: 4px 8px; border-radius: 4px; background: var(--color-inverse); color: var(--color-on-inverse); font: 400 .75rem/1.333 var(--font-ui); letter-spacing: .1px; }
.snackbar { display: inline-flex; align-items: center; gap: 24px; min-height: 48px; padding: 6px 8px 6px 16px; border-radius: 4px; background: var(--color-inverse); color: var(--color-on-inverse); box-shadow: var(--shadow-3); font: 400 var(--text-ui)/1.43 var(--font-ui); }
.snackbar .btn-text { color: var(--color-inverse-accent); height: 36px; }

/* ---------- tabs and the text field ---------- */
.tabs { display: flex; gap: 8px; box-shadow: inset 0 -1px 0 var(--color-divider); }
.tabs button { height: 48px; padding: 0 16px; border: 0; background: transparent; color: var(--color-ink-2); font: var(--font-weight-label) var(--text-label)/1 var(--font-label); cursor: pointer; position: relative; }
.tabs button[aria-selected="true"] { color: var(--color-primary); }
.tabs button[aria-selected="true"]::after { content: ""; position: absolute; left: 12px; right: 12px; bottom: 0; height: 3px; border-radius: 3px 3px 0 0; background: var(--color-primary); }
.field { position: relative; display: block; }
.field input, .field textarea { width: 100%; height: 56px; padding: 16px; border: 0; border-radius: var(--radius-field); background: transparent; color: var(--color-ink); font: 400 var(--text-body)/1.5 var(--font-body); box-shadow: inset 0 0 0 1px var(--color-outline); outline: none; transition: box-shadow var(--duration-s) var(--ease-standard); }
.field input:focus, .field textarea:focus { box-shadow: inset 0 0 0 2px var(--color-primary); }
.field span { position: absolute; left: 12px; top: -8px; padding: 0 4px; background: var(--background, var(--color-paper)); color: var(--color-ink-2); font: 400 .75rem/16px var(--font-ui); }
.field:focus-within span { color: var(--color-primary); }

/* ---------- web pages: header, hero, jump bar, sections, FAQ, footer ---------- */
.wrap { max-width: var(--spacing-page); margin: 0 auto; padding: 0 var(--spacing-gutter); }
.site-header { position: sticky; top: 0; z-index: 20; height: var(--spacing-topbar); background: var(--color-paper); transition: box-shadow .3s; }
.site-header.scrolled { box-shadow: 0 2px 6px rgba(0, 0, 0, .12), inset 0 -1px 0 var(--color-line); }
.site-header .wrap { display: flex; align-items: center; gap: 32px; height: 100%; max-width: var(--spacing-page-wide); }
.brand-lockup { display: inline-flex; align-items: center; gap: 10px; color: var(--color-ink); font: 600 1.125rem/1 var(--font-display); letter-spacing: -.02em; text-decoration: none !important; }
.brand-lockup svg { width: 26px; height: 26px; color: var(--color-primary); }
.brand-lockup em { font-style: normal; color: var(--color-ink-2); font-weight: 400; }
.site-nav { display: flex; gap: 28px; font: 400 var(--text-ui)/1 var(--font-ui); }
.site-nav a { color: var(--color-ink-2); text-decoration: none; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--color-ink); }
.site-header .end { margin-left: auto; display: flex; gap: 8px; align-items: center; }
.section { padding: var(--spacing-section) 0; }
.section-alt { background: var(--color-canvas); }
.jump { display: flex; justify-content: center; gap: 4px; width: max-content; max-width: 100%; margin: 0 auto; padding: 4px; border-radius: var(--radius-pill); background: var(--color-paper); box-shadow: var(--shadow-1); overflow-x: auto; }
.jump a { padding: 10px 20px; border-radius: var(--radius-pill); color: var(--color-ink-2); font: 400 var(--text-ui)/1 var(--font-ui); text-decoration: none; white-space: nowrap; }
.jump a[aria-current="true"] { color: var(--color-ink); font-weight: 600; background: var(--color-surface); }
.faq details { border-top: 1px solid var(--color-divider); padding: 28px 0; }
.faq details:last-child { border-bottom: 1px solid var(--color-divider); }
.faq summary { list-style: none; display: flex; justify-content: space-between; gap: 24px; cursor: pointer; font: 500 1.25rem/1.4 var(--font-title-s); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; width: 10px; height: 10px; flex: none; margin-top: 8px; border-right: 2px solid var(--color-primary); border-bottom: 2px solid var(--color-primary); transform: rotate(45deg); transition: transform var(--duration-s) var(--ease-standard); }
.faq details[open] summary::after { transform: rotate(-135deg); }
.faq details p { margin: 12px 0 0; color: var(--color-ink-2); max-width: 70ch; }
.site-footer { background: var(--color-canvas); padding: 56px 0 40px; font: 400 .8125rem/1.6 var(--font-ui); color: var(--color-ink-2); }
.site-footer a { color: var(--color-ink-2); }

/* ---------- file-type colours: the only saturated colour in the chrome ---------- */
.ft-doc { color: #0a5cff; } .ft-sheet { color: #15a367; } .ft-deck { color: #f2a93b; } .ft-pdf { color: #e5484d; } .ft-folder { color: var(--color-ink-2); }

/* ---------- small screens and reduced motion ---------- */
@media (max-width: 720px) { .site-nav { display: none; } .site-header .wrap { gap: 16px; } }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}