:root {
  --bg: #f6f4ef;
  --card: #ffffff;
  --ink: #1d1d1b;
  --muted: #66635b;
  --line: #e6e2d8;
  --soft: #f1eee6;
  --accent: #1f6f5c;
  --accent-2: #2b8a72;
  --accent-ink: #ffffff;
  --danger: #b4412f;
  --warn: #9a6a12;
  --lv0: #ece9e1;
  --lv1: #e3efe2;
  --lv2: #cfe8d3;
  --lv3: #b4dcc0;
  --lv4: #93cda8;
  --lv5: #6dbb8d;
  --lv6: #1f9d6a;
  --can: #3fae7a;
  --cant: #d9705c;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(30, 25, 10, .05), 0 4px 18px rgba(30, 25, 10, .05);
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141513;
    --card: #1d1f1c;
    --ink: #ecebe6;
    --muted: #9b998f;
    --line: #2f322d;
    --soft: #252823;
    --accent: #45b391;
    --accent-2: #5cc4a2;
    --accent-ink: #0d1f19;
    --danger: #e37d68;
    --warn: #e0b45c;
    --lv0: #262923;
    --lv1: #24352b;
    --lv2: #234231;
    --lv3: #22543b;
    --lv4: #216847;
    --lv5: #1f7f54;
    --lv6: #2fbf83;
    --can: #3fae7a;
    --cant: #c45e4b;
    --shadow: none;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: var(--accent); }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .6em; }
h1 { font-size: 1.75rem; letter-spacing: -.01em; }
h2 { font-size: 1.2rem; }
h3 { font-size: 1.02rem; }
p { margin: 0 0 .8em; }

header.top {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: .8rem max(1rem, env(safe-area-inset-left));
  max-width: 1200px; width: 100%; margin: 0 auto;
}
.brand { font-weight: 800; font-size: 1.25rem; color: var(--ink); text-decoration: none; display: flex; align-items: center; gap: .45rem; }
.brand-dot { width: .8rem; height: .8rem; border-radius: 50%; background: var(--accent); box-shadow: .45rem 0 0 var(--lv5); margin-right: .45rem; }
header nav { display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
header nav a, header nav button.link { color: var(--ink); text-decoration: none; font-size: .95rem; font-weight: 400; }
header nav a:hover { color: var(--accent); }

main { flex: 1; width: 100%; max-width: 860px; margin: 0 auto; padding: 1rem max(1rem, env(safe-area-inset-left)) 3rem; }
main.wide { max-width: 1200px; }

footer {
  display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center; align-items: center;
  color: var(--muted); font-size: .85rem; padding: 1.5rem 1rem 2rem;
}
footer a { color: var(--muted); }
.langs a { text-decoration: none; padding: 0 .25rem; }
.langs a.on { color: var(--ink); font-weight: 700; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem; box-shadow: var(--shadow); margin-bottom: 1rem; }
.card.narrow { max-width: 460px; margin-left: auto; margin-right: auto; }
.card.form-card { max-width: 620px; }
.card.center, .center { text-align: center; }
.card.empty { text-align: center; color: var(--muted); padding: 2.5rem 1rem; }
.big-icon { font-size: 2.8rem; color: var(--accent); margin-bottom: .3rem; }
.icon { display: inline-flex; vertical-align: -0.14em; }
.icon svg { width: 1em; height: 1em; }
.eyebrow.ok { color: var(--accent); }

.hero { max-width: 640px; margin: 1.5rem auto 2rem; }
.hero h1 { font-size: 2.3rem; }
.lead { font-size: 1.1rem; color: var(--muted); }
.steps { padding-left: 1.3rem; margin: 1.2rem 0; }
.steps li { margin-bottom: .45rem; }
.note { background: var(--soft); border-radius: 10px; padding: .75rem 1rem; font-size: .95rem; }
.eyebrow { text-transform: uppercase; letter-spacing: .06em; font-size: .75rem; color: var(--muted); font-weight: 700; margin-bottom: .3rem; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
.error { color: var(--danger); font-weight: 600; }
.flash { background: color-mix(in srgb, var(--accent) 14%, transparent); border-radius: 10px; padding: .6rem .9rem; }
.danger-text { color: var(--danger) !important; }

form.stack, .stack { display: flex; flex-direction: column; gap: .9rem; }
form.inline { display: inline; }
label { display: flex; flex-direction: column; gap: .3rem; font-weight: 600; font-size: .92rem; }
label.check { flex-direction: row; align-items: center; gap: .5rem; font-weight: 500; }
label.inline-label { flex-direction: row; align-items: center; gap: .4rem; font-weight: 500; }
fieldset { border: 1px solid var(--line); border-radius: 10px; padding: .75rem 1rem 1rem; margin: 0; display: flex; flex-direction: column; gap: .4rem; }
legend { font-weight: 600; font-size: .92rem; padding: 0 .3rem; }
input, select, textarea {
  font: inherit; color: var(--ink); background: var(--card);
  border: 1px solid var(--line); border-radius: 10px; padding: .6rem .75rem; min-height: 2.6rem; width: 100%;
}
input:focus, select:focus { outline: 2px solid color-mix(in srgb, var(--accent) 45%, transparent); border-color: var(--accent); }
select { width: auto; max-width: 100%; }
label > select { width: 100%; }
.duration { display: flex; gap: 1rem; flex-wrap: wrap; }
.duration label { flex-direction: row; align-items: center; gap: .4rem; font-weight: 500; }
.duration input { width: 5rem; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

button, .button {
  font: inherit; font-weight: 600; font-size: .95rem; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; gap: .35rem;
  border: 1px solid var(--line); background: var(--card); color: var(--ink);
  padding: .6rem 1rem; border-radius: 10px; text-decoration: none; min-height: 2.6rem;
}
button:hover, .button:hover { border-color: var(--accent); }
button.primary, .button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
button.primary:hover, .button.primary:hover { background: var(--accent-2); }
button.danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 40%, var(--line)); }
button.danger:hover { background: var(--danger); color: #fff; }
button.big { padding: .85rem 1.6rem; font-size: 1.05rem; }
button.small, .button.small { padding: .35rem .7rem; font-size: .85rem; min-height: 2rem; }
button.link { background: none; border: none; padding: 0; min-height: 0; color: var(--accent); font-weight: 500; text-decoration: underline; text-underline-offset: 2px; }
.row { display: flex; gap: .6rem; align-items: center; }
.row.wrap, .wrap { flex-wrap: wrap; }
.row-between { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.danger-zone { border-top: 1px solid var(--line); margin-top: 1.5rem; padding-top: 1rem; }

.chip { display: inline-block; font-size: .78rem; font-weight: 600; padding: .12rem .55rem; border-radius: 99px; background: var(--soft); color: var(--muted); margin-left: .35rem; white-space: nowrap; }
.chip.ok { background: color-mix(in srgb, var(--lv6) 18%, transparent); color: var(--accent); }
.chip.warn { background: color-mix(in srgb, var(--warn) 15%, transparent); color: var(--warn); }

.group-list { list-style: none; padding: 0; margin: 0; display: grid; gap: .75rem; }
.group-item { display: grid; grid-template-columns: 1fr auto; gap: .2rem 1rem; text-decoration: none; color: var(--ink); margin: 0; }
.group-item .title { font-weight: 700; font-size: 1.08rem; }
.group-item .meta { grid-column: 1; color: var(--muted); font-size: .9rem; }
.group-item .chip { grid-row: 1 / span 2; grid-column: 2; align-self: center; }
.group-item:hover { border-color: var(--accent); }

/* calendars */
.conn-list { list-style: none; padding: 0; margin: 0; }
.conn { display: grid; grid-template-columns: 2rem 1fr auto; grid-template-areas: "k l b" "k s b"; gap: .1rem .75rem; align-items: center; padding: .6rem 0; border-bottom: 1px solid var(--line); }
.conn:last-child { border-bottom: none; }
.conn .kind { grid-area: k; }
.conn .label { grid-area: l; font-weight: 600; text-decoration: none; color: var(--ink); overflow-wrap: anywhere; }
.conn .status { grid-area: s; color: var(--muted); font-size: .85rem; }
.conn.error .status { color: var(--danger); }
.conn form { grid-area: b; }
.kind { display: inline-grid; place-items: center; width: 1.8rem; height: 1.8rem; border-radius: 8px; background: var(--soft); font-weight: 800; font-size: .9rem; }
.kind-google { color: #4285f4; }
.kind-microsoft { color: #0a64c9; }
.providers { display: grid; grid-template-columns: minmax(0, 1fr); gap: .6rem; max-width: 620px; }
.provider { margin: 0; }
.provider { display: flex; flex-direction: column; padding: .9rem 1.1rem; }
.provider:not(details) { flex-direction: row; align-items: center; justify-content: space-between; gap: 1rem; }
.provider h3 { display: flex; align-items: center; gap: .6rem; margin: 0; }
details.provider > summary { list-style: none; cursor: pointer; }
details.provider > summary::-webkit-details-marker { display: none; }
details.provider > summary h3 { margin: 0; }
details.provider > summary h3::after { content: "+"; margin-left: auto; color: var(--muted); font-weight: 400; font-size: 1.3rem; }
details.provider[open] > summary h3::after { content: "–"; }
details.provider[open] > summary { margin-bottom: .8rem; }

/* group page */
.group-head .meta { display: flex; flex-wrap: wrap; gap: .4rem 1.2rem; color: var(--muted); }
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 1rem; align-items: start; margin-top: .5rem; }
@media (max-width: 900px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
}
.confirmed { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 7%, var(--card)); }
.confirmed h2 { font-size: 1.4rem; }
.local-times { display: flex; flex-wrap: wrap; gap: .2rem .9rem; color: var(--muted); font-size: .85rem; margin: .2rem 0 .3rem; }
.windows, .proposals, .members, .my-cals { list-style: none; padding: 0; margin: 0; }
.windows li { display: grid; grid-template-columns: 1fr auto; gap: .35rem .75rem; align-items: center; padding: .7rem 0; border-bottom: 1px solid var(--line); }
.windows li:last-child, .proposals li:last-child, .members li:last-child { border-bottom: none; }
.windows .when, .proposal .when { font-weight: 700; }
.windows .chip { justify-self: start; margin-left: 0; }
.windows .row { grid-column: 1 / -1; justify-content: flex-end; }
.windows select { min-height: 2rem; padding: .25rem .5rem; }
.proposal { padding: .8rem 0; border-bottom: 1px solid var(--line); display: flex; flex-direction: column; gap: .5rem; }
.voters { display: flex; flex-wrap: wrap; gap: .35rem; }
.voter { font-size: .82rem; padding: .15rem .55rem; border-radius: 99px; background: var(--soft); color: var(--muted); }
.voter.yes { background: color-mix(in srgb, var(--can) 22%, transparent); color: var(--ink); }
.voter.no { background: color-mix(in srgb, var(--cant) 22%, transparent); color: var(--ink); }
.voter.conflict { outline: 1px dashed var(--warn); color: var(--warn); }
.on-behalf summary { cursor: pointer; font-size: .85rem; color: var(--accent); }
.behalf-row { flex-direction: row; justify-content: space-between; align-items: center; font-weight: 500; font-size: .88rem; margin-top: .4rem; }
.behalf-row select { min-height: 2rem; padding: .2rem .4rem; }
.members li { display: flex; flex-direction: column; gap: .1rem; padding: .55rem 0; border-bottom: 1px solid var(--line); }
.members .name { font-weight: 600; }
.members .chip { margin-left: .4rem; }
.members button.link { align-self: flex-start; }
.dot { display: inline-block; width: .5rem; height: .5rem; border-radius: 50%; margin-right: .4rem; background: var(--muted); vertical-align: middle; }
.dot.ok { background: var(--lv6); }
.dot.wait { background: var(--warn); }
.dot.bad { background: var(--danger); }
.my-cals li { display: flex; flex-direction: column; padding: .35rem 0; }
.my-cals .check { overflow-wrap: anywhere; }
.copy-row { display: flex; gap: .5rem; margin-bottom: .6rem; }
.copy-row input { min-height: 2rem; padding: .3rem .6rem; font-size: .85rem; }
.share h3 + p { margin-top: -.3rem; }

.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.seg button { border: none; border-radius: 0; min-height: 2.1rem; padding: .3rem .8rem; font-size: .88rem; background: var(--card); }
.seg button + button { border-left: 1px solid var(--line); }
.seg button.on { background: var(--accent); color: var(--accent-ink); }
.toolbar { margin: .2rem 0 .6rem; gap: .8rem; }
.toolbar select { min-height: 2.1rem; padding: .25rem .5rem; font-size: .88rem; }

.grid-scroll { overflow: auto; max-height: 68vh; border: 1px solid var(--line); border-radius: 10px; overscroll-behavior: contain; }
.grid { display: grid; position: relative; user-select: none; -webkit-user-select: none; min-width: min-content; }
.corner, .day-head { position: sticky; top: 0; z-index: 2; background: var(--card); border-bottom: 1px solid var(--line); }
.corner { left: 0; z-index: 3; }
.day-head { display: flex; flex-direction: column; align-items: center; padding: .3rem .1rem; font-size: .7rem; color: var(--muted); line-height: 1.15; }
.day-head .wd { text-transform: capitalize; }
.day-head b { color: var(--ink); font-size: .95rem; }
.time { position: sticky; left: 0; z-index: 1; background: var(--card); font-size: .68rem; color: var(--muted); text-align: right; padding-right: .35rem; height: 15px; line-height: 1; transform: translateY(-.35em); }
.cell { height: 15px; border-left: 1px solid var(--line); border-top: 1px solid color-mix(in srgb, var(--line) 55%, transparent); cursor: pointer; }
.time:not(.half) + .cell, .cell:nth-child(n) { }
@media (pointer: coarse) {
  .cell, .time { height: 24px; }
  button.small, .button.small { min-height: 2.75rem; padding: .4rem .9rem; }
  .seg button { min-height: 2.75rem; }
}
.cell.out { background: repeating-linear-gradient(45deg, transparent 0 4px, var(--soft) 4px 6px); cursor: default; }
.cell.lv0 { background: var(--lv0); }
.cell.lv1 { background: var(--lv1); }
.cell.lv2 { background: var(--lv2); }
.cell.lv3 { background: var(--lv3); }
.cell.lv4 { background: var(--lv4); }
.cell.lv5 { background: var(--lv5); }
.cell.lv6 { background: var(--lv6); }
.cell.mtg { box-shadow: inset 3px 0 0 var(--ink), inset -3px 0 0 var(--ink); }
.cell.prop { box-shadow: inset 2px 0 0 var(--accent), inset -2px 0 0 var(--accent); }
.cell.sel { outline: 2px solid var(--ink); outline-offset: -2px; position: relative; z-index: 1; }
.cell.unset { background: var(--lv0); }
.cell.basefree { background: color-mix(in srgb, var(--can) 16%, var(--card)); }
.cell.calbusy { background: repeating-linear-gradient(45deg, var(--lv0) 0 4px, color-mix(in srgb, var(--muted) 35%, var(--lv0)) 4px 6px); }
.cell.can { background: var(--can); }
.cell.cant { background: var(--cant); }
.cell.calhint { box-shadow: inset 0 0 0 2px color-mix(in srgb, var(--ink) 25%, transparent); }
.cell.drag { outline: 2px solid var(--accent); outline-offset: -2px; opacity: .8; }
.cell.anchor { outline: 3px solid var(--ink); outline-offset: -3px; }
.cell-info { display: flex; flex-wrap: wrap; align-items: center; gap: .4rem 1rem; margin-top: .8rem; padding: .7rem .9rem; background: var(--soft); border-radius: 10px; }

.toast { position: fixed; left: 50%; bottom: 1.5rem; transform: translateX(-50%); background: var(--ink); color: var(--bg); padding: .7rem 1.1rem; border-radius: 10px; z-index: 50; box-shadow: var(--shadow); }

@media (max-width: 560px) {
  header.top { flex-wrap: wrap; row-gap: .3rem; }
  header nav { width: 100%; justify-content: flex-start; flex-wrap: nowrap; overflow-x: auto; }
  h1 { font-size: 1.45rem; }
  .hero h1 { font-size: 1.8rem; }
  .two { grid-template-columns: 1fr; }
  header nav { gap: .7rem; }
  header nav a, header nav button.link { font-size: .88rem; }
  .card { padding: 1rem; }
}