/* CVC Hub — styled with the CVC design system (docs/DESIGN_SYSTEM.md). */

/* ABC Arizona Flare is CVC's licensed heading face. Drop the .woff2 files in
   frontend/fonts/ and uncomment the url() line; until then it falls back to Georgia. */
@font-face {
  font-family: "ABC Arizona Flare";
  src: local("ABC Arizona Flare") /* , url("/fonts/ABCArizonaFlare-Regular.woff2") format("woff2") */;
  font-weight: 300 700;
  font-display: swap;
}

:root {
  /* color */
  --ink: #100E0C; --ink-hover: #2A2724; --ink-72: rgba(16,14,12,.72);
  --ink-06: rgba(16,14,12,.06); --ink-03: rgba(16,14,12,.03);
  --paper: #FAFAF9; --paper-warm: #F6F4F0; --paper-hover: #E4E4E3; --card: #FFFFFF;
  --border: #E5E5E5; --border-strong: #D4D4D4; --muted-fg: #737373; --ring: #A1A1A1;
  --night-sky: #092F60;
  --success: #1F6B3A; --success-soft: #E8F1EA;
  --warning: #8A5A00; --warning-soft: #F7EFDC;
  --danger:  #B42318; --danger-soft:  #F9E9E7;
  --info:    #092F60; --info-soft:    #E6ECF4;
  --neutral-soft: #EFEEEC;

  /* type */
  --font-serif: "ABC Arizona Flare", "Iowan Old Style", Georgia, serif;
  --font-sans: "Geist", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --tracking-display: -0.03em; --tracking-heading: -0.025em;
  --tracking-subhead: -0.01em; --tracking-label: 0.08em;

  /* shape & motion */
  --radius-sm: 6px; --radius: 10px; --radius-lg: 13px; --radius-xl: 16px; --radius-2xl: 24px;
  --ease-out: cubic-bezier(.23,1,.32,1); --ease-out-cubic: cubic-bezier(.33,1,.68,1);
  --dur-hover: 150ms; --dur-press: 160ms;
  --shadow-pop: 0 12px 40px rgba(16,14,12,.12);
}

* { box-sizing: border-box; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 400 15px/1.6 var(--font-sans);
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}
b, strong { font-weight: 600; }
a { color: var(--ink); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; text-decoration-color: rgba(16,14,12,.35); transition: text-decoration-color var(--dur-hover); }
a:hover { text-decoration-color: var(--ink); }

/* typography */
h1, h2 { font-family: var(--font-serif); font-weight: 400; text-wrap: balance; }
h1 { font-size: 40px; line-height: 45px; letter-spacing: var(--tracking-heading); margin: 0 0 6px; }
h2 { font-size: 22px; line-height: 28px; letter-spacing: var(--tracking-subhead); margin: 0 0 16px; }
h3, h2.eyebrow { font: 500 13px/1.4 var(--font-sans); letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--ink-72); margin: 32px 0 12px; }
.muted { color: var(--ink-72); }
.center { text-align: center; }
.small { font-size: 14px; line-height: 20px; }

/* top bar */
header {
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 24px;
  height: 64px; padding: 0 clamp(16px, 5vw, 48px);
  position: sticky; top: 0; z-index: 5;
  background: color-mix(in srgb, var(--paper) 85%, transparent);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
}
header[hidden] { display: none; }
.menu { display: contents; } /* desktop: nav and .who sit straight in the header grid */
.menu-btn { display: none; }
.skip { position: absolute; left: 16px; top: -100px; z-index: 20; padding: 10px 16px; border-radius: var(--radius); background: var(--ink); color: var(--paper); text-decoration: none; }
.skip:focus { top: 12px; }
main:focus, h1:focus { outline: none; }
.brand { justify-self: start; text-decoration: none; display: inline-flex; align-items: baseline; gap: 6px; color: var(--ink); }
.brand { font: 600 20px/1 var(--font-sans); letter-spacing: -0.03em; }
.brand span { font: 400 21px/1 var(--font-serif); letter-spacing: var(--tracking-subhead); }
nav { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; }
nav a {
  font-size: 14px; line-height: 20px; color: var(--ink); text-decoration: none;
  padding: 6px 12px; border-radius: var(--radius); white-space: nowrap;
  transition: background-color var(--dur-hover) var(--ease-out-cubic);
}
nav a:hover { background: var(--ink-06); }
nav a.active { font-weight: 500; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 6px; text-decoration-color: var(--ink); }
.who { justify-self: end; display: flex; align-items: center; gap: 12px; white-space: nowrap; font-size: 14px; color: var(--ink-72); }
#who-name { display: inline-flex; align-items: center; gap: 8px; }

main { max-width: 1100px; margin: 0 auto; padding: 48px clamp(16px, 5vw, 48px) 96px; }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 32px; flex-wrap: wrap; }
.page-head .muted { font-size: 16px; }

/* cards & grid */
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 24px; margin-bottom: 24px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); margin-bottom: 32px; }
.tile {
  display: flex; flex-direction: column; gap: 4px;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; color: var(--ink); text-decoration: none;
  transition: border-color 200ms var(--ease-out-cubic), box-shadow 200ms var(--ease-out-cubic);
}
a.tile:hover { border-color: var(--border-strong); box-shadow: 0 6px 20px rgba(16,14,12,.06); }
a.tile:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
.tile .big .unit { margin-left: 8px; font: 400 14px/1 var(--font-sans); letter-spacing: 0; color: var(--ink-72); }
.tile-cta {
  order: 3; margin-top: auto; align-self: flex-start;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 12px; border-radius: 8px; border: 1px solid var(--border-strong);
  background: var(--card); box-shadow: 0 1px 2px rgba(16,14,12,.05);
  font: 500 13px/1.5 var(--font-sans);
  transition: background-color var(--dur-hover) var(--ease-out-cubic), color var(--dur-hover) var(--ease-out-cubic), border-color var(--dur-hover) var(--ease-out-cubic);
}
.tile { min-height: 156px; }
.tile .big { margin-bottom: 16px; }
.tile-cta .arrow { transition: transform 200ms var(--ease-out); }
a.tile:hover .tile-cta { background: var(--ink); border-color: var(--ink); color: var(--paper); }
a.tile:hover .tile-cta .arrow { transform: translateX(3px); }
a.tile:active .tile-cta { transform: scale(.97); }
.tile .label { order: 0; font: 500 13px/1.4 var(--font-sans); letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--ink-72); }
.tile .big { order: 1; font: 600 32px/40px var(--font-sans); letter-spacing: var(--tracking-heading); color: var(--ink); font-variant-numeric: tabular-nums; }
.tile .muted { order: 2; margin-top: 4px; }

/* Home tiles: the main CTA's ::after covers the tile so the whole tile is one link; the admin CTA sits above it. */
div.tile { position: relative; }
div.tile:hover { border-color: var(--border-strong); box-shadow: 0 6px 20px rgba(16,14,12,.06); }
.tile-actions { order: 3; margin-top: auto; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.tile-actions .tile-cta { margin: 0; color: var(--ink); text-decoration: none; white-space: nowrap; }
.tile-cta.main::after { content: ""; position: absolute; inset: 0; border-radius: var(--radius); }
.tile-cta.main:hover { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.tile-cta.main:hover .arrow { transform: translateX(3px); }
.tile-cta.main:focus-visible { outline: none; }
.tile-cta.main:focus-visible::after { outline: 2px solid var(--ink); outline-offset: 3px; }
.tile-cta.admin { position: relative; z-index: 1; background: var(--paper-warm); border-color: var(--border); box-shadow: none; }
.tile-cta.admin:hover { background: var(--neutral-soft); border-color: var(--border-strong); }
.tile-cta.admin:active { transform: scale(.97); }
.tile-cta.admin:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
.tile-cta .count { min-width: 18px; padding: 0 5px; border-radius: 999px; background: var(--ink); color: var(--paper); font: 600 11px/18px var(--font-sans); text-align: center; font-variant-numeric: tabular-nums; }
.grid > .card { margin-bottom: 0; }
h2 .small, h2 .muted { font-family: var(--font-sans); letter-spacing: 0; }

/* buttons (CVC "pill") */
button, .btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: 500 15px/1.5 var(--font-sans); cursor: pointer; text-decoration: none;
  padding: 7px 15px; border-radius: var(--radius);
  border: 1px solid var(--border-strong); background: var(--card); color: var(--ink);
  box-shadow: 0 1px 2px rgba(16,14,12,.05);
  -webkit-tap-highlight-color: transparent;
  transition: background-color var(--dur-hover) var(--ease-out-cubic), border-color var(--dur-hover) var(--ease-out-cubic),
              color var(--dur-hover) var(--ease-out-cubic), box-shadow var(--dur-hover) var(--ease-out-cubic), transform var(--dur-press) var(--ease-out);
}
button:hover:not(:disabled), .btn:hover { background: var(--paper-warm); border-color: #BDBCBA; box-shadow: 0 2px 6px rgba(16,14,12,.08); }
button:active:not(:disabled), .btn:active { transform: scale(.97); box-shadow: none; }
button:focus-visible, .btn:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
button.primary { background: var(--ink); border-color: var(--ink); color: var(--paper); }
button.primary:hover:not(:disabled) { background: var(--ink-hover); border-color: var(--ink-hover); }
button.danger { background: var(--card); border-color: rgba(180,35,24,.3); color: var(--danger); }
button.danger:hover:not(:disabled) { background: var(--danger-soft); border-color: rgba(180,35,24,.5); }
button.ok { background: var(--ink); border-color: var(--ink); color: var(--paper); }
button.ok:hover:not(:disabled) { background: var(--ink-hover); border-color: var(--ink-hover); }
button.sm { padding: 3px 10px; font-size: 13px; border-radius: 8px; }
button.link { border: 0; background: none; box-shadow: none; padding: 0; color: var(--ink); font-weight: 400; font-size: inherit; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
button.link:hover:not(:disabled) { background: none; box-shadow: none; text-decoration-thickness: 2px; }
button:disabled { opacity: .45; cursor: default; box-shadow: none; }
@media (prefers-reduced-motion: reduce) { button:active:not(:disabled) { transform: none; } }

.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.row h2 { margin-bottom: 0; }
.card > .row:first-child { margin-bottom: 16px; }

/* forms */
form.stack { display: grid; gap: 16px; }
.fields { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }
label { display: grid; gap: 6px; font: 500 13px/1.4 var(--font-sans); color: var(--ink-72); }
input, select, textarea {
  font: 400 15px/1.5 var(--font-sans); color: var(--ink);
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 8px 12px; width: 100%;
  transition: border-color var(--dur-hover), box-shadow var(--dur-hover);
}
select { padding-right: 32px; appearance: none; background: var(--card) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 4.5l3 3 3-3' fill='none' stroke='%23100E0C' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat right 12px center; }
input:hover:not(:focus-visible), select:hover:not(:focus-visible), textarea:hover:not(:focus-visible) { border-color: #BDBCBA; }
input::placeholder, textarea::placeholder { color: var(--muted-fg); }
input:focus-visible, select:focus-visible, textarea:focus-visible { outline: none; border-color: var(--ring); box-shadow: 0 0 0 3px rgba(161,161,161,.35); }
input[type=checkbox], input[type=radio] { width: auto; accent-color: var(--ink); padding: 0; }
textarea { min-height: 80px; resize: vertical; }
.checks { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; }
.checks label { display: flex; gap: 8px; align-items: center; font-weight: 400; font-size: 14px; color: var(--ink); }

/* tabs — segmented control */
.tabs { display: inline-flex; gap: 2px; padding: 4px; margin-bottom: 24px; background: var(--neutral-soft); border-radius: var(--radius); flex-wrap: wrap; max-width: 100%; }
.tabs button { border: 0; background: transparent; box-shadow: none; padding: 5px 14px; font-size: 14px; border-radius: 8px; }
.tabs button:hover:not(:disabled) { background: var(--ink-06); border: 0; box-shadow: none; }
.tabs button.on, .tabs button.on:hover { background: var(--ink); color: var(--paper); }

/* tables */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 12px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font: 500 12px/1.4 var(--font-sans); letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--ink-72); padding-top: 4px; }
tr:last-child td { border-bottom: 0; }
tr:has(td) { transition: background-color var(--dur-hover) var(--ease-out-cubic); }
tr:has(td):hover { background: var(--ink-03); }
td { font-variant-numeric: tabular-nums; }
td.actions { white-space: nowrap; text-align: right; }
.table-wrap { overflow-x: auto; }

/* badges / chips */
.badge {
  display: inline-flex; align-items: center; padding: 1px 10px; border-radius: 999px;
  font: 500 12px/1.6 var(--font-sans); text-transform: capitalize; vertical-align: middle;
  background: var(--neutral-soft); color: var(--ink-72);
}
.badge.pending { background: var(--warning-soft); color: var(--warning); }
.badge.approved, .badge.open { background: var(--success-soft); color: var(--success); }
.badge.rejected { background: var(--danger-soft); color: var(--danger); }
.badge.closed, .badge.member { background: var(--neutral-soft); color: var(--ink-72); }
.badge.admin { background: var(--info-soft); color: var(--info); }
.chip { display: inline-flex; align-items: center; gap: 4px; background: var(--card); border: 1px solid var(--border); border-radius: 999px; padding: 1px 10px; font-size: 13px; line-height: 1.6; margin: 0 4px 4px 0; }
.chip.me { background: var(--ink); border-color: var(--ink); color: var(--paper); }

/* interview calendar */
.cal-bar { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; }
.cal-legend { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; font-size: 13px; color: var(--ink-72); }
.cal-legend span { display: inline-flex; align-items: center; gap: 6px; }
.sw { width: 14px; height: 14px; border-radius: 4px; display: inline-block; }
.sw.open { background: var(--card); border: 1.5px solid var(--success); }
.sw.full { background: repeating-linear-gradient(135deg, #E4E3E0 0 3px, var(--neutral-soft) 3px 6px); border: 1px solid #DAD9D6; }
.sw.mine { background: var(--ink); }
.cal-wrap { overflow-x: auto; padding-top: 4px; }
.cal { display: grid; column-gap: 0; min-width: min-content; }
.cal-head { text-align: center; padding: 4px 4px 12px; font: 500 12px/1.3 var(--font-sans); letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--ink-72); }
.cal-head b { display: block; font: 400 26px/1.2 var(--font-serif); letter-spacing: var(--tracking-subhead); color: var(--ink); text-transform: none; }
.cal-times { position: relative; }
.cal-times span { position: absolute; right: 10px; transform: translateY(-50%); font-size: 12px; color: var(--muted-fg); font-variant-numeric: tabular-nums; white-space: nowrap; }
.cal-times span:first-child { transform: none; }
.cal-col { position: relative; border-left: 1px solid var(--border);
  background-image: repeating-linear-gradient(to bottom, var(--border) 0 1px, transparent 1px var(--hour, 144px)); } /* hour line every 60 min */
.cal-col:last-child { border-right: 1px solid var(--border); }
button.cal-slot {
  position: absolute; display: flex; flex-direction: column; align-items: flex-start; justify-content: flex-start; gap: 0;
  padding: 7px 10px; gap: 2px; border-radius: 8px; overflow: hidden; text-align: left;
  font: 500 14px/1.35 var(--font-sans); font-variant-numeric: tabular-nums; box-shadow: none;
}
button.cal-slot:hover:not(:disabled) { box-shadow: 0 4px 12px rgba(16,14,12,.10); z-index: 1; }
.cal-slot .t { display: flex; width: 100%; justify-content: space-between; gap: 4px; white-space: nowrap; }
.cal-slot em { font-style: normal; font-size: 12px; font-weight: 500; }
.cal-slot .n { font-size: 13px; font-weight: 400; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 100%; opacity: .85; }
/* open = bright & outlined green (actionable); full = grey hatched & quiet; mine = solid ink */
button.cal-slot.open { background: var(--card); border: 1.5px solid var(--success); color: var(--ink); box-shadow: 0 1px 3px rgba(31,107,58,.12); }
button.cal-slot.open em { color: var(--success); }
button.cal-slot.open:hover:not(:disabled) { background: var(--success-soft); border-color: var(--success); box-shadow: 0 4px 12px rgba(31,107,58,.18); }
button.cal-slot.full { background: repeating-linear-gradient(135deg, #E4E3E0 0 4px, var(--neutral-soft) 4px 8px); border: 1px solid #DAD9D6; color: rgba(16,14,12,.5); }
button.cal-slot.full em { color: rgba(16,14,12,.5); }
button.cal-slot.full:hover:not(:disabled) { border-color: var(--border-strong); color: var(--ink-72); }
button.cal-slot.mine, button.cal-slot.mine:hover:not(:disabled) { background: var(--ink); border: 1px solid var(--ink); color: var(--paper); }
button.cal-slot.closed { border-style: dashed; }
button.cal-slot:active:not(:disabled) { transform: none; }
.label-sm { font: 500 12px/1.4 var(--font-sans); letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--ink-72); margin-bottom: 6px; }

/* coffee chats */
.progress { height: 8px; border-radius: 999px; background: var(--neutral-soft); overflow: hidden; }
.progress i { display: block; height: 100%; background: var(--ink); border-radius: 999px; transition: width .4s var(--ease-out); }
button.chip-btn { font: 400 13px/1.6 var(--font-sans); padding: 1px 10px; border-radius: 999px; }

/* alumni directory */
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.alum-layout { display: grid; grid-template-columns: 232px minmax(0, 1fr); gap: 24px; align-items: start; }
.alum-filters { position: sticky; top: 88px; margin: 0; padding: 20px; }
.alum-filters-body { display: grid; gap: 20px; }
.alum-filters summary { display: none; }
.alum-filters fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
.alum-filters legend { padding: 0; margin-bottom: 8px; }
.alum-check { display: flex; align-items: center; gap: 10px; padding: 6px 8px; margin: 0 -8px; border-radius: 8px; font: 400 14px/20px var(--font-sans); color: var(--ink); cursor: pointer; transition: background-color var(--dur-hover) var(--ease-out-cubic); }
.alum-check:hover { background: var(--ink-03); }
.alum-check .n { margin-left: auto; font-size: 13px; color: var(--muted-fg); font-variant-numeric: tabular-nums; }
.alum-check:has(input:checked) { font-weight: 500; }
.alum-years { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.alum-years input { font-variant-numeric: tabular-nums; padding: 7px 10px; }

.alum-search { position: relative; display: block; margin-bottom: 16px; }
.alum-search svg { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--muted-fg); pointer-events: none; }
.alum-search input { padding: 11px 14px 11px 40px; }
.alum-count { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; font-size: 14px; color: var(--ink-72); }
.alum-count b { color: var(--ink); font-weight: 500; font-variant-numeric: tabular-nums; }
.alum-list { display: grid; gap: 8px; }
.alum {
  display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 16px; align-items: start;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 20px;
  transition: border-color var(--dur-hover) var(--ease-out-cubic);
}
.alum:hover { border-color: var(--border-strong); }
.alum-avatar { width: 48px; height: 48px; border-radius: 999px; display: grid; place-items: center; background: var(--paper-warm); border: 1px solid var(--border); font: 400 18px/1 var(--font-serif); letter-spacing: var(--tracking-subhead); color: var(--ink); }
.alum-top { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.alum-name { margin-right: 4px; }
.alum-name { font: 600 16px/24px var(--font-sans); letter-spacing: -0.01em; }
.alum-role { font-size: 14px; line-height: 20px; margin-top: 2px; }
.alum-role b { font-weight: 500; }
.alum-role .sep { margin: 0 6px; color: var(--muted-fg); }
.alum-meta { display: flex; gap: 8px 28px; flex-wrap: wrap; margin: 12px 0 0; }
.alum-meta div { min-width: 0; }
.alum-meta dt { font: 500 12px/1.4 var(--font-sans); letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--ink-72); }
.alum-meta dd { margin: 2px 0 0; font-size: 14px; line-height: 20px; }
.alum-links { display: flex; gap: 4px; }
.icon-btn { display: inline-grid; place-items: center; width: 36px; height: 36px; border-radius: var(--radius); color: var(--ink-72); text-decoration: none; transition: background-color var(--dur-hover) var(--ease-out-cubic), color var(--dur-hover) var(--ease-out-cubic); }
.icon-btn:hover { background: var(--ink-06); color: var(--ink); }
.icon-btn:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.alum-empty-title { font: 400 20px/25px var(--font-serif); letter-spacing: var(--tracking-subhead); color: var(--ink); margin: 0 0 4px !important; }

@media (max-width: 860px) {
  .alum-layout { grid-template-columns: 1fr; gap: 16px; }
  .alum-filters.card { position: static; padding: 0; }
  .alum-filters summary { display: flex; align-items: center; justify-content: space-between; padding: 12px 18px; cursor: pointer; font: 500 15px/1.5 var(--font-sans); list-style: none; }
  .alum-filters summary::-webkit-details-marker { display: none; }
  .alum-filters summary::after { content: "+"; font-size: 18px; color: var(--ink-72); }
  .alum-filters[open] summary::after { content: "–"; }
  .alum-filters.card[open] { padding-bottom: 18px; }
  .alum-filters-body { padding: 4px 18px 0; }
}
@media (max-width: 520px) {
  .alum { grid-template-columns: auto minmax(0, 1fr); padding: 14px 16px; gap: 12px; }
  .alum-avatar { width: 40px; height: 40px; font-size: 16px; }
  .alum-links { grid-column: 2; margin-left: -10px; }
}

/* sign-in (modelled on almanac.cornellvc.com) */
body.is-login { background: var(--paper-warm); }
body.is-login main { max-width: none; padding: 0; }
.login { min-height: 100vh; min-height: 100svh; display: grid; grid-template-rows: auto 1fr; }
.login-strip { display: flex; justify-content: center; gap: 32px; padding: 24px 16px; font: 500 13px/1.4 var(--font-sans); letter-spacing: var(--tracking-label); text-transform: uppercase; font-variant-numeric: tabular-nums; }
.login-body { align-self: center; justify-self: center; width: min(400px, 100%); padding: 0 16px 15vh; text-align: center; display: grid; gap: 16px; justify-items: center; }
.login .logo { font: 600 44px/1 var(--font-sans); letter-spacing: -0.04em; display: inline-flex; align-items: baseline; gap: 10px; }
.login .logo span { font: 400 52px/1 var(--font-serif); letter-spacing: var(--tracking-display); }
.login .error { color: var(--danger); margin: 0; }
.google { padding: 11px 24px; border-radius: var(--radius-lg); background: var(--ink); border-color: var(--ink); color: var(--paper); }
.google:hover:not(:disabled) { background: var(--ink-hover); border-color: var(--ink-hover); }
.google .g-icon { display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 999px; background: #fff; }
.demo-list { display: grid; gap: 8px; width: 100%; text-align: left; }
.demo-list button { justify-content: space-between; width: 100%; padding: 10px 14px; }
.demo-note { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 14px; text-align: left; margin: 0; }

/* dialog */
dialog { border: 0; border-radius: var(--radius-xl); padding: 0; width: min(560px, calc(100vw - 32px)); background: var(--card); color: var(--ink); box-shadow: var(--shadow-pop); }
dialog::backdrop { background: rgba(16,14,12,.4); -webkit-backdrop-filter: blur(2px); backdrop-filter: blur(2px); }
dialog form { padding: 24px; display: grid; gap: 16px; }
dialog h2 { font-size: 26px; line-height: 32px; margin: 0; }
dialog .row.end { justify-content: flex-end; margin-top: 4px; }

#toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); background: var(--ink); color: var(--paper); padding: 10px 16px; border-radius: var(--radius); z-index: 50; font-size: 14px; box-shadow: var(--shadow-pop); }
#toast.err { background: var(--danger); }

.empty { padding: 32px 24px; text-align: center; color: var(--ink-72); }
.empty p { margin: 0 0 12px; }

/* motion — short, ease-out, never in the way */
@keyframes page-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes pop-in { from { opacity: 0; transform: translateY(8px) scale(.98); } to { opacity: 1; transform: none; } }
@keyframes toast-in { from { opacity: 0; transform: translate(-50%, 10px); } to { opacity: 1; transform: translate(-50%, 0); } }
main.enter > * { animation: page-in 320ms var(--ease-out) both; }
main.enter > *:nth-child(2) { animation-delay: 30ms; }
main.enter > *:nth-child(3) { animation-delay: 60ms; }
main.enter > *:nth-child(n+4) { animation-delay: 90ms; }
dialog[open] { animation: pop-in 220ms var(--ease-out); }
dialog[open]::backdrop { animation: fade-in 220ms var(--ease-out); }
#toast:not([hidden]) { animation: toast-in 240ms var(--ease-out); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition-duration: 0ms !important; }
}

/* ------------------------------------------------------------------ small screens
   ≤1199px: the nav (8 links for admins) no longer fits, so it collapses into a hamburger menu.
   ≤899px: touch layouts — controls grow to 44px targets, fields to 16px text.
   ≤700px: phones — tables become labelled cards, dialogs become bottom sheets. */
@media (max-width: 1199px) {
  header {
    display: flex; justify-content: space-between; gap: 12px; height: 56px;
    padding: 0 max(8px, env(safe-area-inset-right)) 0 max(16px, env(safe-area-inset-left));
    padding-top: env(safe-area-inset-top); height: calc(56px + env(safe-area-inset-top));
  }
  .brand { min-height: 44px; align-items: center; }
  .menu-btn {
    display: inline-grid; place-items: center; width: 44px; height: 44px; padding: 0;
    border: 0; background: none; box-shadow: none; border-radius: var(--radius);
  }
  .menu-btn:hover:not(:disabled) { background: var(--ink-06); border: 0; box-shadow: none; }
  .bars { position: relative; width: 20px; height: 14px; }
  .bars i { position: absolute; left: 0; width: 100%; height: 1.5px; border-radius: 2px; background: var(--ink); transition: transform 200ms var(--ease-out), opacity 150ms; }
  .bars i:nth-child(1) { top: 0; } .bars i:nth-child(2) { top: 6.25px; } .bars i:nth-child(3) { top: 12.5px; }
  header.open .bars i:nth-child(1) { transform: translateY(6.25px) rotate(45deg); }
  header.open .bars i:nth-child(2) { opacity: 0; }
  header.open .bars i:nth-child(3) { transform: translateY(-6.25px) rotate(-45deg); }

  .menu {
    display: grid; gap: 8px; position: absolute; top: 100%; left: 0; right: 0;
    max-height: calc(100dvh - 56px - env(safe-area-inset-top)); overflow-y: auto; overscroll-behavior: contain;
    padding: 8px max(16px, env(safe-area-inset-left)) calc(16px + env(safe-area-inset-bottom));
    background: var(--paper); border-bottom: 1px solid var(--border);
    box-shadow: 0 24px 48px rgba(16,14,12,.10), 0 0 0 100vmax rgba(16,14,12,.18); /* second shadow = scrim */
    visibility: hidden; opacity: 0; transform: translateY(-6px);
    transition: opacity 180ms var(--ease-out), transform 220ms var(--ease-out), visibility 0s linear 220ms;
  }
  header.open .menu { visibility: visible; opacity: 1; transform: none; transition-delay: 0s; }
  nav { display: grid; gap: 2px; overflow: visible; }
  nav a { display: flex; align-items: center; min-height: 48px; padding: 0 12px; font-size: 17px; }
  nav a.active { background: var(--ink-06); text-decoration: none; }
  .who { justify-self: stretch; justify-content: space-between; border-top: 1px solid var(--border); padding: 12px 8px 0; font-size: 15px; }
  .who button.link { min-height: 44px; }
}

@media (max-width: 899px) {

  /* 44px touch targets; 16px text in fields so iOS Safari doesn't zoom on focus */
  button, .btn, button.sm, .tabs button { min-height: 44px; }
  button.sm { padding: 6px 14px; font-size: 14px; }
  button.chip-btn { min-height: 44px; padding: 4px 14px; font-size: 14px; margin: 0 6px 6px 0; }
  button.link { min-height: 44px; }
  input, select, textarea { font-size: 16px; min-height: 44px; }
  input[type=checkbox], input[type=radio] { min-height: 0; width: 18px; height: 18px; }
  .checks label, .alum-check { min-height: 44px; }
  .icon-btn { width: 44px; height: 44px; }
  .tile-cta, .play-pill { min-height: 44px; }
  .tile-cta .count { font-size: 12px; }
  .tabs { display: flex; }
  .tabs button { flex: 1 1 auto; }
}

@media (max-width: 700px) {
  main { padding: 28px max(16px, env(safe-area-inset-left)) calc(64px + env(safe-area-inset-bottom)); }
  h1 { font-size: 32px; line-height: 36px; }
  .page-head { margin-bottom: 24px; align-items: center; }
  .card { padding: 16px 18px; }
  .login-strip { gap: 16px; }

  /* home tiles: compact rows (label + number left, action right) */
  .grid:has(> .tile) { grid-template-columns: 1fr; gap: 10px; }
  .tile { display: grid; grid-template-columns: minmax(0, 1fr) auto; column-gap: 12px; align-items: center; min-height: 0; padding: 14px 16px; }
  .tile .label { grid-column: 1; grid-row: 1; }
  .tile .big { grid-column: 1; grid-row: 2; margin: 0; font-size: 28px; line-height: 34px; }
  .tile .tile-actions { grid-column: 1 / -1; grid-row: 3; margin-top: 10px; }

  /* tables → one labelled card per row (labels come from data-label, set in app.js) */
  table.stack-sm, table.stack-sm tbody { display: block; }
  table.stack-sm tr:has(th) { position: absolute; width: 1px; height: 1px; padding: 0; border: 0; overflow: hidden; clip: rect(0 0 0 0); }
  table.stack-sm tr { display: grid; grid-template-columns: minmax(84px, auto) minmax(0, 1fr); column-gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--border); }
  table.stack-sm tr:last-child { border-bottom: 0; }
  table.stack-sm tr:has(td):hover { background: none; }
  table.stack-sm td { display: contents; }
  table.stack-sm td::before { content: attr(data-label); font: 500 12px/24px var(--font-sans); letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--ink-72); }
  table.stack-sm .cell { min-width: 0; overflow-wrap: anywhere; }
  table.stack-sm td:not([data-label])::before { content: none; }
  table.stack-sm td.actions { display: flex; grid-column: 1 / -1; gap: 8px; margin-top: 10px; padding: 0; border: 0; white-space: normal; }
  table.stack-sm td.actions:empty { display: none; }
  table.stack-sm td.actions > button { flex: 1; }
  table.stack-sm td.actions > .muted { margin-top: -6px; }
  .table-wrap { overflow: visible; }

  /* calendar: two days per screen, swipe for more; the time column stays put */
  .cal { --time-col: 44px; --day-min: 128px; }
  .cal-wrap { scroll-snap-type: x mandatory; scroll-padding-left: 44px; padding-bottom: 10px; }
  .cal-times, .cal > div:first-child { position: sticky; left: 0; z-index: 2; background: var(--card); }
  .cal-times span { right: 8px; font-size: 12px; }
  .cal-col { scroll-snap-align: start; }
  button.cal-slot { padding: 6px 8px; font-size: 13px; }
  .cal-slot .n { font-size: 12px; }
  .cal-bar .row { width: 100%; }
  .cal-bar .row button { flex: 1 1 auto; }

  /* dialogs → bottom sheets */
  dialog {
    width: 100%; max-width: none; max-height: calc(100dvh - 24px - env(safe-area-inset-top));
    margin: auto 0 0; border-radius: var(--radius-xl) var(--radius-xl) 0 0; overflow-y: auto; overscroll-behavior: contain;
  }
  dialog form { padding: 20px 18px calc(18px + env(safe-area-inset-bottom)); }
  dialog h2 { font-size: 22px; line-height: 28px; padding-right: 8px; }
  dialog .row.end { position: sticky; bottom: calc(-18px - env(safe-area-inset-bottom)); margin: 4px -18px calc(-18px - env(safe-area-inset-bottom)); padding: 12px 18px calc(12px + env(safe-area-inset-bottom)); background: var(--card); border-top: 1px solid var(--border); }
  dialog .row.end button { flex: 1 1 0; min-height: 48px; }
  @keyframes sheet-in { from { transform: translateY(24px); opacity: .6; } to { transform: none; opacity: 1; } }
  dialog[open] { animation: sheet-in 240ms var(--ease-out); }

  #toast { bottom: calc(16px + env(safe-area-inset-bottom)); max-width: calc(100vw - 32px); width: max-content; text-align: center; }
}

/* games (frontend/games.js) */
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.streak { display: inline-flex; align-items: center; padding: 4px 12px; border-radius: 999px; background: var(--ink); color: var(--paper); font: 500 13px/1.5 var(--font-sans); font-variant-numeric: tabular-nums; }

/* Home "Play" pill: small, ink, and a little playful. The die rolls on hover. */
.play-pill { display: inline-flex; align-items: center; gap: 6px; padding: 5px 14px 5px 8px; border-radius: 999px; background: var(--ink); color: var(--paper);
  font: 500 14px/22px var(--font-sans); text-decoration: none; -webkit-tap-highlight-color: transparent;
  transition: background-color var(--dur-hover) var(--ease-out-cubic), transform var(--dur-press) var(--ease-out); }
.play-pill:hover { background: var(--ink-hover); }
.play-pill:active { transform: scale(.95); }
.play-pill:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
.play-pill .die { width: 20px; height: 20px; flex: none; color: var(--paper); transition: transform 500ms cubic-bezier(.34,1.56,.64,1); }
.play-pill .die .pips { fill: var(--ink); }
.play-pill:hover .die { transform: rotate(180deg) scale(1.12); }
.play-pill.fresh .die { animation: die-wobble 3.2s var(--ease-out) 1s infinite; }
.play-pill.fresh:hover .die { animation: none; }
.play-streak { padding-left: 8px; margin-left: 2px; border-left: 1px solid rgba(250,250,249,.25); font-size: 13px; font-variant-numeric: tabular-nums; }
@keyframes die-wobble { 0%, 78%, 100% { transform: none; } 84% { transform: rotate(-16deg); } 90% { transform: rotate(12deg); } 96% { transform: rotate(-5deg); } }

/* Wordmarks: one voice per game. Up Round is the serif italic with a lifted "Up"; Dilution is mono, thinning out letter by letter. */
.logo { display: inline-flex; align-items: center; gap: .34em; color: var(--ink); white-space: nowrap; }
.logo svg { width: .86em; height: .86em; flex: none; }
.logo-ur { font: italic 400 1em/1.15 var(--font-serif); letter-spacing: var(--tracking-display); }
.logo-ur i { display: inline-block; transform: translateY(-.16em); }
.logo-dl { font: 400 .84em/1.15 var(--font-mono); letter-spacing: .06em; }

/* game picker */
.game-grid { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.game-tile { padding: 8px; gap: 0; min-height: 0; border-radius: var(--radius-xl); }
.game-cover { display: grid; justify-items: center; align-content: center; gap: 10px; min-height: 176px; padding: 24px 16px; border-radius: var(--radius); background: var(--paper-warm); font-size: 36px; text-align: center; }
.game-dilution .game-cover { background: var(--neutral-soft); }
.game-cover .label { font-size: 12px; }
.game-tag { font: 400 14px/20px var(--font-sans); color: var(--ink-72); }
.game-tile-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 12px 6px; }
.game-stat { font-size: 14px; line-height: 28px; color: var(--ink-72); font-variant-numeric: tabular-nums; }
.game-stat b { font: 600 22px/28px var(--font-sans); letter-spacing: var(--tracking-heading); color: var(--ink); margin-right: 6px; }
.game-tile-foot .tile-cta { margin: 0; align-self: center; flex: none; }

/* leaderboards */
.lb-grid { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); align-items: start; }
.lb-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.lb-head h2 { margin: 0; font-size: 22px; }
.lb-head .tabs { margin: 0; }
.lb-head .tabs button { padding: 3px 10px; font-size: 13px; }
.lb { list-style: none; margin: 0; padding: 0; }
.lb li { display: grid; grid-template-columns: 28px minmax(0, 1fr) auto; gap: 8px; align-items: center; padding: 8px; border-bottom: 1px solid var(--border); font-size: 14px; font-variant-numeric: tabular-nums; }
.lb li:last-child { border-bottom: 0; }
.lb li.me { background: var(--paper-warm); border-radius: 8px; border-bottom-color: transparent; font-weight: 500; }
.lb-rank { display: grid; place-items: center; width: 24px; height: 24px; border-radius: 999px; font-size: 13px; color: var(--ink-72); }
.lb li:nth-child(-n+3) .lb-rank { background: var(--neutral-soft); color: var(--ink); font-weight: 600; }
.lb li:first-child .lb-rank { background: var(--ink); color: var(--paper); }
.lb-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lb-score { font-weight: 600; }
.lb-score .muted { font-weight: 400; font-size: 13px; }
.lb .lb-gap { display: block; text-align: center; padding: 2px; color: var(--muted-fg); border: 0; }

/* in-game chrome */
.game-head { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; }
.game-head h1 { margin: 0; flex: 1; font-size: 36px; line-height: 44px; }
.game-head .back { font-size: 14px; color: var(--ink-72); text-decoration: none; flex-basis: 100%; }
.game-head .back:hover { color: var(--ink); }
.ur-score, .dl-best { font-size: 15px; color: var(--ink-72); font-variant-numeric: tabular-nums; }
.ur-score b, .dl-best b { display: inline-block; font: 600 32px/1 var(--font-sans); letter-spacing: var(--tracking-heading); color: var(--ink); margin-left: 6px; }
.ur-score b.bump { animation: bump 360ms var(--ease-out); }
@keyframes bump { 35% { transform: scale(1.4); } }
button.game-go { padding: 12px 32px; font-size: 16px; border-radius: var(--radius-lg); }

/* Up Round */
.ur-intro { max-width: 460px; margin: 24px auto; padding: 48px 24px; border-radius: var(--radius-xl); text-align: center; display: grid; justify-items: center; gap: 8px; }
.ur-intro h2 { font-size: 28px; line-height: 36px; margin: 0; }
.ur-intro p { margin: 0 0 16px; }
.ur-board { display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); align-items: stretch; }
.ur-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-xl); padding: 24px; display: flex; flex-direction: column; gap: 4px; min-height: 280px;
  transition: background-color 250ms var(--ease-out-cubic), border-color 250ms var(--ease-out-cubic); animation: pop-in 260ms var(--ease-out) both; }
#ur-left { background: var(--paper-warm); animation: none; }
.ur-name { font: 400 28px/34px var(--font-serif); letter-spacing: var(--tracking-subhead); text-wrap: balance; }
.ur-val { font: 600 48px/1 var(--font-sans); letter-spacing: var(--tracking-display); font-variant-numeric: tabular-nums; margin-top: auto; padding-top: 20px; }
.ur-note { min-height: 20px; }
.ur-vs { position: relative; z-index: 1; align-self: center; margin: 0 -12px; display: grid; place-items: center; width: 40px; height: 40px; border-radius: 999px; background: var(--ink); color: var(--paper);
  font: 500 12px/1 var(--font-sans); letter-spacing: var(--tracking-label); text-transform: uppercase; }
.ur-btns { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 16px; }
.ur-btns button { padding: 14px 16px; font-size: 16px; font-weight: 600; border-radius: var(--radius-lg); border-color: var(--ink); }
.ur-btns button:hover:not(:disabled) { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.ur-card.right { background: var(--success-soft); border-color: var(--success); }
.ur-card.right .ur-val { color: var(--success); }
.ur-card.wrong { background: var(--danger-soft); border-color: var(--danger); animation: shake 320ms var(--ease-out); }
.ur-card.wrong .ur-val { color: var(--danger); }
.ur-verdict { margin-top: 16px; min-height: 54px; display: flex; align-items: center; font: 600 16px/1.5 var(--font-sans); }
.ur-card.right .ur-verdict { color: var(--success); }
.ur-card.wrong .ur-verdict { color: var(--danger); }
.ur-big { font: 600 56px/1 var(--font-sans); letter-spacing: var(--tracking-display); font-variant-numeric: tabular-nums; margin: 4px 0 12px; animation: pop-in 320ms var(--ease-out) both; }
.ur-big span { margin-left: 10px; font: 400 16px/1 var(--font-sans); letter-spacing: 0; color: var(--ink-72); }
.ur-result p { margin: 0 0 16px; }
.ur-result .row { margin: 0; }
.share-box { font: 400 14px/1.6 var(--font-mono); background: var(--paper-warm); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; white-space: pre-wrap; margin: 0 0 16px; }
@keyframes shake { 20%, 60% { transform: translateX(-5px); } 40%, 80% { transform: translateX(5px); } }

/* Dilution: the one ink surface, played like an arcade screen */
.dl-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 24px; align-items: start; }
.dl-stage { position: relative; height: min(600px, 70vh); min-height: 400px; background: var(--ink); border-radius: var(--radius-xl); overflow: hidden;
  touch-action: manipulation; user-select: none; -webkit-user-select: none; -webkit-tap-highlight-color: transparent; cursor: pointer; }
.dl-stage canvas { display: block; width: 100%; height: 100%; }
.dl-hud { position: absolute; inset: 0 0 auto; z-index: 1; display: flex; justify-content: space-between; padding: 16px 20px; color: var(--paper); pointer-events: none; }
.dl-hud > div:last-child { text-align: right; }
.dl-hud .label-sm { display: block; margin-bottom: 2px; color: rgba(250,250,249,.6); }
.dl-hud b { font: 600 28px/32px var(--font-sans); letter-spacing: var(--tracking-heading); font-variant-numeric: tabular-nums; white-space: nowrap; }
.dl-overlay { position: absolute; inset: 0; z-index: 2; display: grid; place-items: center; padding: 16px; background: color-mix(in srgb, var(--ink) 55%, transparent); -webkit-backdrop-filter: blur(3px); backdrop-filter: blur(3px); cursor: default; }
.dl-overlay[hidden] { display: none; }
.dl-card { background: var(--card); border-radius: var(--radius-xl); box-shadow: var(--shadow-pop); padding: 28px 32px; max-width: 320px; text-align: center; display: grid; gap: 4px; justify-items: center; animation: pop-in 220ms var(--ease-out); }
.dl-card h2 { margin: 4px 0; font-size: 28px; line-height: 34px; }
.dl-card p { margin: 0 0 8px; }
.dl-card .label-sm { margin: 0; }
.dl-pop { position: absolute; top: 24%; left: 50%; z-index: 1; transform: translateX(-50%); pointer-events: none; opacity: 0; white-space: nowrap;
  background: var(--paper); color: var(--ink); border-radius: 999px; padding: 4px 14px; font: 600 13px/1.5 var(--font-sans); }
.dl-pop.show { animation: pop-float 900ms var(--ease-out) both; }
@keyframes pop-float { 0% { opacity: 0; transform: translate(-50%, 8px); } 15% { opacity: 1; transform: translate(-50%, 0); } 75% { opacity: 1; } 100% { opacity: 0; transform: translate(-50%, -14px); } }
.dl-board { margin: 0; }

@media (max-width: 860px) {
  .dl-layout { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .ur-board { grid-template-columns: 1fr; }
  .ur-vs { justify-self: center; margin: -12px 0; }
  .ur-card { min-height: 0; padding: 18px; }
  .ur-name { font-size: 24px; line-height: 30px; }
  .ur-val { font-size: 38px; padding-top: 12px; }
  .dl-stage { height: 64vh; }
  .game-cover { font-size: 30px; min-height: 148px; }
  .game-head h1 { font-size: 30px; line-height: 38px; }
}