@font-face {
  font-family: "Hanken Grotesk";
  src: url("fonts/hanken-grotesk-latin-wght-normal.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}

:root {
  color-scheme: light;
  --paper: #eef2ef;
  --surface: #ffffff;
  --ink: #1b2a25;
  --muted: #5a6a63;
  --line: #d3ddd7;
  --accent: #1f5a49;
  --accent-ink: #ffffff;
  --paint: #e3b04b;
  --paint-edge: #b9862a;
  --pick: #e0742b;
  --pick-light: #f6dfa6;
  --pick-edge: #8a5d0c;
  --heat-lo: #f4f7f5;
  --heat-hi: #14503f;
  --empty: repeating-linear-gradient(135deg, transparent 0 4px, #dde4e0 4px 5px);
  --danger: #a33a2c;
  --flash: #fbf3dc;
  --focus: #2f7ae5;
  --cell: 34px;
  --cell-h: 18px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: "Hanken Grotesk", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--ink);
  background: var(--paper);
  font-feature-settings: "tnum" 1;
}

/* ---------- header (organisers only) */
header.site {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.75rem clamp(1rem, 4vw, 2.5rem);
  border-bottom: 1px solid var(--line);
}
nav { display: flex; align-items: center; gap: 1.25rem; font-size: 0.95rem; flex-wrap: wrap; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--ink); }
nav form { margin: 0; }

/* ---------- layout */
main { padding: clamp(1.5rem, 4vw, 3rem) clamp(1rem, 4vw, 2.5rem) 4rem; max-width: 64rem; margin: 0 auto; }
main.narrow { max-width: 34rem; }
main.wide { max-width: 80rem; }
main.medium { max-width: 46rem; }
h1 { font-size: clamp(1.6rem, 3vw, 2.1rem); line-height: 1.15; letter-spacing: -0.02em; font-weight: 700; margin: 0 0 0.5rem; }
h2 { font-size: 1.1rem; font-weight: 650; margin: 0 0 0.75rem; letter-spacing: -0.005em; }
.lede, .desc { color: var(--muted); max-width: 60ch; margin: 0 0 1.5rem; }
.desc { white-space: pre-line; margin-bottom: 0.25rem; }
.meta, .small, small { color: var(--muted); font-size: 0.9rem; }
.opt { color: var(--muted); font-weight: 400; font-size: 0.85rem; }
a { color: var(--accent); }
.head-row { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-bottom: 1.25rem; }
.head-row h1 { margin: 0; }

/* ---------- forms */
form.stack { display: grid; gap: 1.1rem; }
label { display: grid; gap: 0.3rem; font-weight: 550; font-size: 0.95rem; }
label small { font-weight: 400; }
label.check { display: flex; align-items: center; gap: 0.55rem; font-weight: 450; }
fieldset { border: 0; border-top: 1px solid var(--line); padding: 1.75rem 0 0; margin: 1rem 0 0; display: grid; gap: 0.8rem; min-width: 0; }
legend { float: left; width: 100%; padding: 0; margin: 0; font-weight: 650; font-size: 1.05rem; }
legend + * { clear: both; }
input::placeholder, textarea::placeholder { color: var(--muted); opacity: 0.7; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.9rem; }
input, select, textarea {
  font: inherit; color: inherit; background: var(--surface);
  border: 1px solid var(--line); border-radius: 5px; padding: 0.55rem 0.65rem; width: 100%;
}
/* The bundled font has no password-dot glyph, so masked passwords use the system font. */
input[type="password"] { font-family: system-ui, -apple-system, "Segoe UI", sans-serif; letter-spacing: 0.1em; }
input[type="checkbox"] { width: 1.1rem; height: 1.1rem; accent-color: var(--accent); }
textarea { resize: vertical; }
button, .button {
  font: inherit; font-weight: 600; border-radius: 5px; padding: 0.6rem 1rem; cursor: pointer;
  border: 1px solid transparent; text-decoration: none; display: inline-block; line-height: 1.3;
}
.primary { background: var(--accent); color: var(--accent-ink); }
.primary:hover { filter: brightness(1.08); }
.primary:disabled { opacity: 0.45; cursor: not-allowed; filter: none; }
.secondary { background: var(--surface); color: var(--ink); border-color: var(--line); }
.secondary:hover { border-color: var(--muted); }
button.link { background: none; border: 0; padding: 0; color: var(--muted); font-weight: 500; text-decoration: underline; text-underline-offset: 2px; }
button.link:hover { color: var(--ink); }
.danger, button.link.danger { color: var(--danger); }
form.inline { display: inline; margin: 0; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

.flash { display: flex; align-items: flex-start; gap: 1rem; background: var(--flash); border: 1px solid var(--line); border-radius: 6px; padding: 0.6rem 0.6rem 0.6rem 0.9rem; margin-bottom: 1rem; }
.flash p { margin: 0.15rem 0; flex: 1; }
.flash-close { background: none; border: 0; padding: 0 0.35rem; font-size: 1.35rem; line-height: 1; color: var(--muted); cursor: pointer; font-weight: 400; }
.flash-close:hover { color: var(--ink); }

/* ---------- lists */
table.list { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; margin-bottom: 2rem; }
table.list th, table.list td { text-align: left; padding: 0.7rem 0.9rem; border-bottom: 1px solid var(--line); }
table.list th { font-size: 0.85rem; color: var(--muted); font-weight: 550; }
table.list tr:last-child td { border-bottom: 0; }
table.list td.num { font-variant-numeric: tabular-nums; }
table.list a { font-weight: 600; text-decoration: none; }
table.list a:hover { text-decoration: underline; }
.tag { font-size: 0.85rem; color: var(--muted); }
.tag.done { color: var(--accent); font-weight: 600; }
.event-cols { display: grid; grid-template-columns: minmax(12rem, 1fr) minmax(0, 3fr); gap: 1rem 2rem; padding: 0 1.4rem 0.5rem; font-size: 0.8rem; font-weight: 650; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); }
.track-cols { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.75rem; }
.event-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.9rem; }
.event-card { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 1.1rem 1.4rem; display: grid; grid-template-columns: minmax(12rem, 1fr) minmax(0, 3fr); align-items: center; gap: 1rem 2rem; }
.event-title { font-weight: 650; font-size: 1.08rem; text-decoration: none; }
.event-title:hover { text-decoration: underline; }
.track { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.75rem; }
.track-step { display: flex; align-items: center; gap: 0.6rem; min-width: 0; }
.track-num { flex: none; width: 1.75rem; height: 1.75rem; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.85rem; background: var(--paper); color: var(--muted); box-shadow: inset 0 0 0 1px var(--line); }
.track-step.done .track-num, .track-step.current .track-num { background: var(--accent); color: var(--accent-ink); box-shadow: none; }
.track-step.current .track-num { box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 25%, transparent); }
.track-text { display: flex; flex-direction: column; line-height: 1.25; min-width: 0; }
.track-label { font-size: 0.92rem; font-weight: 600; }
.track-step.todo .track-label { color: var(--muted); font-weight: 500; }
.track-note { font-size: 0.92rem; color: var(--ink); }
.track-step.todo .track-note { color: var(--muted); }
.track-step.current .track-note { color: var(--accent); font-weight: 600; }
@media (max-width: 760px) { .event-cols { display: none; } .event-card { grid-template-columns: 1fr; } .track { grid-template-columns: 1fr; } .track .sr-only { position: static; width: auto; height: auto; clip: auto; overflow: visible; color: var(--muted); } }
.stage { display: inline-flex; align-items: center; gap: 0.5rem; font-size: 0.92rem; }
.stage-num { width: 1.5rem; height: 1.5rem; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-size: 0.8rem; font-weight: 700; background: var(--accent); color: var(--accent-ink); }
.empty { border: 1px dashed var(--line); border-radius: 6px; padding: 1.5rem; color: var(--muted); }

/* ---------- event page */
.event-head { margin-bottom: 2rem; display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem 2rem; flex-wrap: wrap; }
.event-head-text { min-width: 0; flex: 1 1 20rem; }
.event-head .org-logo { flex: none; margin-top: 0.4rem; }
.org-logo { display: inline-block; }
.org-logo img { display: block; height: 2.3rem; width: auto; }
.header-logo { margin: 0; }
.header-logo img { height: 1.75rem; }
.share {
  display: grid; gap: 0.5rem; margin: 0 0 2rem; padding: 1rem 1.25rem;
  background: var(--flash); border: 1px solid color-mix(in oklab, var(--paint) 45%, var(--line)); border-radius: 6px;
}
.share label { font-weight: 650; display: block; }
.share input { background: var(--surface); font-weight: 500; }
.copy-row { display: flex; gap: 0.5rem; }
.copy-row input { flex: 1; font-weight: 400; }
.final { border-left: 4px solid var(--paint); background: var(--surface); padding: 1rem 1.25rem; margin-bottom: 2rem; border-radius: 0 6px 6px 0; }
.final h2 { margin-bottom: 0.25rem; }
.final-time { font-size: 1.35rem; font-weight: 650; margin: 0 0 0.9rem; letter-spacing: -0.01em; }
.final-actions { display: flex; gap: 0.6rem; flex-wrap: wrap; margin: 0 0 0.5rem; }
.controls { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 1rem 2rem; margin-bottom: 2rem; padding-top: 2rem; border-top: 1px solid var(--line); }
.controls .name-step { flex: 0 1 28rem; margin: 0; }
.tzbar { margin: 0; }
.tzbar label { white-space: nowrap; display: inline-flex; align-items: center; gap: 0.5rem; font-weight: 450; color: var(--muted); }
.tzbar label { max-width: 100%; }
.tzbar select { width: auto; max-width: 16rem; min-width: 0; flex: 1 1 auto; }

.grids { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr)); gap: 2rem; align-items: start; }
.grids.single { grid-template-columns: minmax(0, 1fr); }
.panel h2 { display: flex; align-items: baseline; gap: 0.6rem; margin-bottom: 0.4rem; }
.panel-bar { min-height: 3rem; display: flex; align-items: center; margin-bottom: 0.4rem; }
.panel-bar .hint, .panel-bar .legend { margin: 0; }
.count { color: var(--muted); font-weight: 450; font-size: 0.95rem; }
.name-step { display: flex; gap: 0.6rem; align-items: end; flex-wrap: wrap; margin-bottom: 0.75rem; }
.name-step label { flex: 1 1 12rem; }
.hint { color: var(--muted); font-size: 0.92rem; margin: 0 0 0.75rem; }
.status { color: var(--muted); font-size: 0.9rem; min-height: 1.4em; margin: 0.5rem 0 0; }

/* ---------- participant steps */
.steps { display: flex; flex-direction: column; gap: 1.25rem; padding-top: 2rem; border-top: 1px solid var(--line); }
.step { display: flex; align-items: center; gap: 1.1rem; flex-wrap: wrap; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 1.25rem 1.5rem; }
.step.active { border: 2px solid var(--accent); padding: calc(1.25rem - 1px) calc(1.5rem - 1px); }
.step.stack { flex-direction: column; flex-wrap: nowrap; align-items: stretch; gap: 1.25rem; }
.step-head { display: flex; align-items: flex-start; gap: 1.1rem; flex-wrap: wrap; }
.step-num { flex: none; width: 2.25rem; height: 2.25rem; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-weight: 700; font-size: 1.05rem; background: var(--accent); color: var(--accent-ink); }
.step.todo .step-num { background: var(--paper); color: var(--muted); box-shadow: inset 0 0 0 1px var(--line); }
.step-body { flex: 1 1 16rem; align-self: center; display: flex; flex-direction: column; gap: 0.2rem; min-width: 0; }
.step-label { margin: 0; font-size: 0.8rem; font-weight: 650; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
.step.active .step-label { color: var(--accent); }
.step-desc { margin: 0; color: var(--muted); font-size: 0.95rem; }
.step.todo .step-desc { opacity: 0.8; }
.step-value { margin: 0; font-size: 1.1rem; font-weight: 600; }
.step-error { margin: 0; color: var(--danger); font-size: 0.9rem; min-height: 0; }
.step-error:empty { display: none; }
.step1-edit { display: flex; gap: 0.6rem; flex-wrap: wrap; margin-top: 0.4rem; }
.step1-edit input { flex: 1 1 16rem; max-width: 28rem; }
.step .save-msg { flex: none; }
.step .big { font-size: 1.02rem; padding: 0.75rem 1.4rem; }
.step.todo .grids { opacity: 0.65; }
.step.done .step-label { color: var(--accent); }
.step .panel h2 { font-size: 1rem; }
.new-steps .step label:not(.check) { display: grid; gap: 0.3rem; }
.new-steps { margin-top: 1.25rem; }
.new-steps .row { margin: 0; }
.new-steps #create-btn { align-self: flex-start; }
.step .controls { border-top: 0; padding-top: 0; margin-bottom: 0; }
.step .share { margin: 0; }
.step > form.inline { align-self: flex-start; }
#mstep3:not(.active) .step-body { opacity: 1; }
.confirm-inline { display: flex; align-items: center; justify-content: space-between; gap: 1rem 2rem; flex-wrap: wrap; margin-top: 0.3rem; }
.confirm-inline .confirm-choice { margin: 0; font-weight: 600; }
.confirm-inline .who { min-height: 0; margin-top: 0.2rem; }
.confirm-inline .who-time, .confirm-inline .who-list { display: inline; margin-right: 1.25rem; font-size: 0.92rem; }
.step .final-time { margin: 0.15rem 0 0.35rem; }
.final-actions-row { display: flex; align-items: center; gap: 0.75rem 1.5rem; flex-wrap: wrap; margin-top: 1rem; }
.step-sub { border-top: 1px solid var(--line); padding-top: 1.25rem; }
.sub-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 0.25rem; }
.sub-head h2 { margin: 0; font-size: 1rem; }
.who:empty { min-height: 0; margin: 0; }
.swatch-mine { width: 18px; height: 12px; background: var(--paint); border: 1px solid var(--paint-edge); }

/* ---------- grid: the one bold element */
.grid-wrap { overflow-x: auto; padding-bottom: 0.25rem; }
.grid {
  display: grid;
  grid-template-columns: max-content repeat(var(--cols, 1), minmax(var(--cell), 1fr));
  width: 100%;
  min-width: calc(2.6rem + var(--cols, 1) * var(--cell));
  user-select: none; -webkit-user-select: none;
}
#grid-mine { touch-action: none; }
.mine-wrap { position: relative; }
.grid.inactive .cell:not(.off) { opacity: 0.5; }
.grid-cover {
  position: absolute; inset: 0; width: 100%; display: flex; align-items: center; justify-content: center;
  background: color-mix(in oklab, var(--paper) 55%, transparent); border: 0; border-radius: 0;
  color: var(--muted); font-weight: 550; font-size: 0.95rem; padding: 1rem; text-align: center; cursor: text;
}
.grid-cover[hidden] { display: none; }
.colhead { position: sticky; top: 0; text-align: center; padding: 0.45rem 0.15rem; line-height: 1.15; background: var(--paper); }
.colhead .wd { display: block; font-size: 0.78rem; color: var(--muted); }
.colhead .dm { display: block; font-size: 0.85rem; font-weight: 600; white-space: nowrap; }
.rowhead { font-size: 0.75rem; color: var(--muted); text-align: right; padding-right: 0.45rem; line-height: 1; transform: translateY(-0.4em); }
.cell {
  height: var(--cell-h);
  background: var(--heat-lo);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid color-mix(in oklab, var(--line) 55%, transparent);
  cursor: pointer;
}
.cell.hour { border-top: 1px solid var(--line); }
.cell.off, .heat .cell.off { background: var(--empty); cursor: default; }
.rowhead.endlabel { grid-column: 1; height: 0.8rem; }
.gap { grid-column: 1 / -1; height: 0.6rem; border-top: 1px dashed var(--line); margin-top: 0.3rem; }
#grid-mine .cell.on, .picker .cell.on { background: var(--paint); border-color: var(--paint-edge); }
#grid-pick { touch-action: none; }
.weeknav { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.weeknav button { padding: 0.4rem 0.75rem; font-size: 0.92rem; }
.weeknav button:disabled { opacity: 0.4; cursor: default; }
.pick-foot { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.pick-foot .hint { margin: 0; }
.small-check { font-size: 0.9rem; color: var(--muted); }
.pick-actions { display: flex; align-items: center; gap: 1.25rem; }

.heat .cell { background: color-mix(in oklab, var(--heat-hi) calc(var(--k, 0) * 100%), var(--heat-lo)); cursor: crosshair; }
/* The block being chosen (or confirmed): solid burnt orange, like an event on a calendar. */
.heat .cell.pick {
  position: relative; z-index: 1;
  background: var(--pick);
  border-color: transparent;
}
/* The event's name on the chosen block. */
.heat .cell.pick-top { z-index: 2; overflow: visible; }
.heat .cell.pick-top::after {
  content: attr(data-label);
  position: absolute; left: 0; right: 0; top: 0;
  height: calc(var(--rows, 1) * 100%);
  display: flex; align-items: center; justify-content: center; text-align: center;
  padding: 0 6px; box-sizing: border-box; overflow: hidden;
  color: #ffffff; font-size: 0.78rem; font-weight: 400; line-height: 1.05;
  pointer-events: none;
}
/* Pointing at a possible block before choosing: a paler orange preview. */
.heat .cell.hover {
  position: relative; z-index: 1;
  background: color-mix(in oklab, var(--pick) 45%, color-mix(in oklab, var(--heat-hi) calc(var(--k, 0) * 100%), var(--heat-lo)));
}
.save-row { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; margin-top: 1rem; min-height: 2.6rem; }
.save-row button[hidden] { display: none; }
.save-msg { margin: 0; font-size: 0.92rem; color: var(--muted); flex: 1 1 16rem; }
.save-msg.ok { color: var(--accent); }
.save-msg.error { color: var(--danger); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.who-list.part { color: var(--ink); }

.legend { display: flex; align-items: center; gap: 0.5rem; font-size: 0.82rem; color: var(--muted); margin-bottom: 0.6rem; }
.swatches { display: inline-flex; }
.swatches i { width: 18px; height: 12px; background: color-mix(in oklab, var(--heat-hi) calc(var(--k) * 100%), var(--heat-lo)); border: 1px solid var(--line); margin-left: -1px; }
.who { min-height: 4.5rem; margin-top: 0.75rem; }
.who-time { font-weight: 650; margin: 0 0 0.25rem; }
.who-list { margin: 0.1rem 0; font-size: 0.92rem; }
.who-list.no { color: var(--muted); }

.confirm-box {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem 2rem; flex-wrap: wrap;
  margin-top: 2.5rem; padding: 1rem 1.25rem; background: var(--surface); border: 1px solid var(--line); border-radius: 6px;
}
.confirm-box p { margin: 0; }
.confirm-text { flex: 1 1 20rem; }
.confirm-box .who { min-height: 0; margin-top: 0.25rem; }
.confirm-box .who-time, .confirm-box .who-list { display: inline; margin-right: 1.25rem; font-size: 0.92rem; }
.confirm-box .who-time { font-weight: 550; }
.confirm-choice { font-weight: 600; }
.manage-foot { margin-top: 3.5rem; padding-top: 1rem; border-top: 1px solid var(--line); }

@media (max-width: 560px) {
  :root { --cell: 30px; --cell-h: 20px; }
  .row { grid-template-columns: 1fr; }
  nav { gap: 0.9rem; font-size: 0.9rem; }
  .copy-row { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }

.auth-logo { display: block; margin: 0 0 2rem; }
.auth-logo img { height: 2.3rem; width: auto; display: block; }
@media (max-width: 560px) { .event-head .org-logo { order: -1; margin: 0 0 0.5rem; } }