:root {
  --ink: #eef8fa;
  --muted: #879aa0;
  --faint: #54676d;
  --page: #071014;
  --panel: #0b171c;
  --panel-raised: #102127;
  --line: rgba(131, 189, 199, 0.15);
  --line-strong: rgba(131, 209, 221, 0.28);
  --cyan: #54e6ff;
  --cyan-dim: #1d8394;
  --amber: #f4bf4f;
  --red: #ff6478;
  --violet: #a895ff;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
  --radius: 3px;
  font-family: "Segoe UI Variable", "Aptos", "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--page);
  font-synthesis: none;
}

* { box-sizing: border-box; }

html { min-width: 320px; scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 82% -10%, rgba(35, 128, 145, 0.18), transparent 35rem),
    radial-gradient(circle at 5% 38%, rgba(244, 191, 79, 0.055), transparent 24rem),
    var(--page);
}

button, input, select, textarea { font: inherit; }
button, select { cursor: pointer; }
button { color: inherit; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.ambient-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.38;
  background-image:
    linear-gradient(rgba(102, 175, 187, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(102, 175, 187, 0.035) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(to bottom, black, transparent 80%);
}

.topbar {
  height: 72px;
  padding: 0 clamp(18px, 3vw, 48px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  background: rgba(6, 15, 19, 0.9);
  backdrop-filter: blur(18px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.brand {
  color: var(--ink);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 13px;
  min-width: 0;
}

.brand-mark {
  width: 32px;
  height: 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  transform: skewX(-10deg);
}

.brand-mark i {
  display: block;
  border: 1px solid var(--cyan);
  background: rgba(84, 230, 255, 0.08);
  box-shadow: inset 0 0 12px rgba(84, 230, 255, 0.09);
}

.brand-mark i:last-child { border-color: var(--amber); transform: translateY(7px); }

.brand strong {
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.84rem;
  line-height: 1.2;
}

.brand small {
  display: block;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.17em;
  font-size: 0.58rem;
  margin-top: 4px;
}

.header-actions { display: flex; align-items: center; gap: 9px; position: relative; }

.site-return {
  display: none;
  margin-left: auto;
  margin-right: 14px;
  color: var(--muted);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.64rem;
  font-weight: 700;
}

.site-return:hover { color: var(--cyan); }

html[data-readonly="true"] .site-return { display: inline-flex; }
html[data-readonly="true"] #add-card-button,
html[data-readonly="true"] #more-button,
html[data-readonly="true"] .add-to-column,
html[data-readonly="true"] .card-menu-button,
html[data-readonly="true"] .move-actions,
html[data-readonly="true"] #card-dialog { display: none; }
html[data-readonly="true"] .card { cursor: default; }
html[data-readonly="true"] .card:hover { transform: none; }

.source-state {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  margin-right: 8px;
}

.source-dot {
  width: 7px;
  height: 7px;
  border-radius: 99px;
  background: var(--amber);
  box-shadow: 0 0 10px rgba(244, 191, 79, 0.6);
}

.source-state[data-state="ready"] .source-dot { background: #72e79b; box-shadow: 0 0 10px rgba(114, 231, 155, 0.5); }
.source-state[data-state="local"] .source-dot { background: var(--violet); box-shadow: 0 0 10px rgba(168, 149, 255, 0.5); }
.source-state[data-state="error"] .source-dot { background: var(--red); }

.button, .icon-button, .add-to-column, .card-menu-button, .move-actions button {
  border: 0;
  background: transparent;
}

.button {
  min-height: 38px;
  padding: 0 15px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.69rem;
  font-weight: 700;
  transition: border-color 150ms ease, background 150ms ease, transform 150ms ease;
}

.button:hover { border-color: rgba(147, 222, 234, 0.56); background: rgba(255,255,255,0.035); }
.button:active { transform: translateY(1px); }
.button-primary { color: #041014; background: var(--cyan); border-color: var(--cyan); }
.button-primary:hover { background: #8befff; border-color: #8befff; }
.button-danger { color: var(--red); border-color: rgba(255, 100, 120, 0.35); }
.button-quiet { color: var(--muted); }

.icon-button {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 1.4rem;
}

.icon-button:hover { color: var(--ink); border-color: var(--line-strong); background: rgba(255,255,255,0.035); }
.icon-button svg { width: 19px; height: 19px; fill: currentColor; }

.popover {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: 220px;
  padding: 7px;
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  background: #102027;
  box-shadow: var(--shadow);
  z-index: 30;
}

.popover button {
  width: 100%;
  padding: 10px;
  text-align: left;
  border: 0;
  border-radius: 2px;
  background: none;
  color: var(--ink);
  font-size: 0.82rem;
}

.popover button:hover { background: rgba(84, 230, 255, 0.075); }
.popover hr { border: 0; border-top: 1px solid var(--line); margin: 6px 3px; }
.popover .danger-text { color: var(--red); }

main { max-width: 1800px; margin: 0 auto; padding: 42px clamp(18px, 3vw, 48px) 64px; }

.board-intro {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 35px;
}

.eyebrow {
  margin: 0 0 11px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.65rem;
  font-weight: 700;
}

.eyebrow span { width: 27px; height: 1px; background: currentColor; box-shadow: 0 0 7px currentColor; }

h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
  font-weight: 650;
}

.intro-copy { color: var(--muted); margin: 14px 0 0; max-width: 640px; line-height: 1.6; font-size: 0.94rem; }

.metrics { display: flex; gap: clamp(23px, 3vw, 50px); padding-bottom: 3px; }
.metrics div { min-width: 72px; }
.metrics strong { display: block; font-size: 1.7rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.metrics span { color: var(--muted); font-size: 0.64rem; text-transform: uppercase; letter-spacing: 0.11em; }

.toolbar {
  min-height: 58px;
  padding: 9px;
  display: flex;
  align-items: center;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: rgba(11, 23, 28, 0.77);
  margin-bottom: 18px;
}

.search-control {
  flex: 1 1 320px;
  min-width: 220px;
  height: 39px;
  padding: 0 11px;
  display: flex;
  align-items: center;
  gap: 9px;
  border-right: 1px solid var(--line);
}

.search-control svg { width: 18px; height: 18px; fill: none; stroke: var(--muted); stroke-width: 1.7; }
.search-control input { flex: 1; border: 0; outline: 0; color: var(--ink); background: transparent; min-width: 80px; }
.search-control input::placeholder { color: var(--faint); }
kbd { padding: 2px 7px; border: 1px solid var(--line); border-radius: 3px; color: var(--faint); font: 0.7rem/1.4 inherit; }

.filter-group { display: flex; gap: 8px; }

select, .field input, .field textarea {
  color: var(--ink);
  background: #0b181d;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.filter-group select { height: 38px; padding: 0 34px 0 12px; color: var(--muted); font-size: 0.75rem; }
select option { background: #102027; color: var(--ink); }
.result-count { color: var(--faint); font-size: 0.72rem; margin: 0 7px 0 auto; white-space: nowrap; }

.board {
  display: grid;
  grid-template-columns: repeat(var(--column-count, 4), minmax(250px, 1fr));
  gap: 12px;
  align-items: start;
}

.column {
  min-width: 0;
  border: 1px solid var(--line);
  border-top: 2px solid var(--column-color, var(--cyan));
  border-radius: 4px;
  background: rgba(10, 22, 27, 0.7);
  transition: border-color 130ms ease, background 130ms ease;
}

.column.drag-over { border-color: var(--column-color); background: color-mix(in srgb, var(--column-color) 7%, rgba(10, 22, 27, 0.92)); }

.column-header { padding: 17px 16px 13px; border-bottom: 1px solid var(--line); }
.column-title-row { display: flex; align-items: center; gap: 9px; }
.column-signal { width: 7px; height: 7px; border-radius: 50%; background: var(--column-color); box-shadow: 0 0 9px var(--column-color); }
.column h2 { margin: 0; text-transform: uppercase; letter-spacing: 0.14em; font-size: 0.74rem; }
.column-count { margin-left: auto; color: var(--muted); font: 0.68rem/1 ui-monospace, "Cascadia Mono", monospace; }
.column-description { margin: 7px 0 0 16px; color: var(--faint); font-size: 0.72rem; line-height: 1.3; }
.wip-track { height: 2px; margin: 12px 0 0 16px; background: rgba(255,255,255,0.06); }
.wip-track span { display: block; width: 0; height: 100%; max-width: 100%; background: var(--column-color); transition: width 200ms ease; }
.column.over-limit .wip-track span { background: var(--red); box-shadow: 0 0 6px rgba(255, 100, 120, 0.6); }

.card-list { min-height: 90px; padding: 10px; display: grid; gap: 9px; align-content: start; }

.card {
  position: relative;
  padding: 14px 14px 12px;
  border: 1px solid rgba(137, 194, 204, 0.13);
  border-left: 2px solid var(--priority-color, var(--faint));
  border-radius: 3px;
  background: linear-gradient(145deg, rgba(19, 39, 45, 0.96), rgba(13, 28, 33, 0.96));
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.12);
  cursor: grab;
  transition: transform 140ms ease, border-color 140ms ease, box-shadow 140ms ease;
}

.card:hover { transform: translateY(-2px); border-color: rgba(131, 209, 221, 0.29); box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2); }
.card.dragging { opacity: 0.38; transform: rotate(1deg); }
.card-topline { min-height: 20px; display: flex; align-items: center; justify-content: space-between; }
.priority-label { color: var(--priority-color); text-transform: uppercase; letter-spacing: 0.13em; font-size: 0.58rem; font-weight: 750; }
.card-menu-button { margin: -6px -7px 0 0; padding: 5px 7px; color: var(--faint); letter-spacing: 0.08em; border-radius: 2px; }
.card-menu-button:hover { color: var(--ink); background: rgba(255,255,255,0.05); }
.card h3 { margin: 6px 20px 7px 0; display: flex; align-items: baseline; gap: 8px; font-size: 0.94rem; line-height: 1.32; font-weight: 630; letter-spacing: -0.01em; }
.card-title-text { min-width: 0; }
.card-summary { margin: 0; color: #94a7ac; font-size: 0.75rem; line-height: 1.48; display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
.tag-list { display: flex; flex-wrap: wrap; gap: 5px; margin: 12px 0 0; }
.tag { padding: 4px 7px 3px; color: #88dce9; background: rgba(84, 230, 255, 0.07); border: 1px solid rgba(84, 230, 255, 0.13); border-radius: 2px; text-transform: uppercase; letter-spacing: 0.09em; font-size: 0.53rem; font-weight: 700; }
.blocker { display: flex; gap: 8px; margin-top: 11px; padding: 8px; background: rgba(255,100,120,0.07); border: 1px solid rgba(255,100,120,0.13); color: #dba2aa; }
.blocker span { display: grid; place-items: center; flex: 0 0 17px; height: 17px; border: 1px solid var(--red); color: var(--red); font-size: 0.64rem; font-weight: 800; }
.blocker p { margin: 0; font-size: 0.66rem; line-height: 1.4; }
.card footer { margin-top: 13px; padding-top: 10px; border-top: 1px solid rgba(131, 189, 199, 0.09); display: flex; justify-content: space-between; gap: 8px; color: var(--faint); font-size: 0.64rem; }
.owner:not(:empty)::before { content: "◉ "; color: var(--cyan-dim); }
.due-date.overdue { color: var(--red); }
.reference { margin: 9px 0 0; color: #667a80; font: 0.58rem/1.45 ui-monospace, "Cascadia Mono", monospace; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.move-actions { display: none; justify-content: flex-end; gap: 4px; margin-top: 8px; }
.move-actions button { width: 27px; height: 24px; border: 1px solid var(--line); color: var(--muted); }
.move-actions button:hover:not(:disabled) { color: var(--cyan); border-color: var(--cyan-dim); }
.move-actions button:disabled { opacity: 0.25; cursor: default; }
.card:focus-within .move-actions, .card:hover .move-actions { display: flex; }

.add-to-column { width: calc(100% - 20px); margin: 0 10px 10px; padding: 10px; color: var(--faint); border: 1px dashed var(--line); border-radius: 2px; text-align: left; text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.59rem; }
.add-to-column:hover { color: var(--column-color); border-color: var(--column-color); background: rgba(255,255,255,0.02); }

.empty-board { padding: 70px 20px; text-align: center; border: 1px dashed var(--line-strong); color: var(--muted); }
.empty-board > span { display: block; color: var(--cyan); font-size: 2.5rem; }
.empty-board h2 { margin: 10px 0 5px; color: var(--ink); font-size: 1.15rem; }
.empty-board p { margin: 0 0 19px; font-size: 0.82rem; }

dialog {
  width: min(620px, calc(100vw - 28px));
  max-height: calc(100vh - 30px);
  padding: 0;
  overflow: auto;
  color: var(--ink);
  background: #0d1c21;
  border: 1px solid var(--line-strong);
  border-top: 2px solid var(--cyan);
  border-radius: 4px;
  box-shadow: 0 30px 90px rgba(0,0,0,0.6);
}

dialog::backdrop { background: rgba(2, 7, 9, 0.76); backdrop-filter: blur(5px); }
#card-form { padding: 24px; }
.dialog-header { display: flex; justify-content: space-between; align-items: start; margin-bottom: 22px; }
.dialog-header h2 { display: flex; align-items: center; gap: 10px; margin: 0; font-size: 1.5rem; }
.dialog-card-key {
  padding: 5px 8px 4px;
  color: #031216;
  background: var(--cyan);
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1;
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { display: grid; gap: 7px; }
.field-wide { margin-bottom: 15px; }
.field label { color: var(--muted); text-transform: uppercase; letter-spacing: 0.11em; font-size: 0.62rem; font-weight: 700; }
.field label small { color: var(--faint); text-transform: none; letter-spacing: 0; font-weight: 400; }
.field input, .field select, .field textarea { width: 100%; padding: 10px 11px; outline: 0; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--cyan-dim); box-shadow: 0 0 0 3px rgba(84,230,255,0.06); }
.form-grid + .field-wide { margin-top: 15px; }
.dialog-actions { display: grid; grid-template-columns: auto 1fr auto auto; gap: 8px; align-items: center; margin-top: 23px; padding-top: 18px; border-top: 1px solid var(--line); }

.toast-region { position: fixed; right: 22px; bottom: 22px; display: grid; gap: 8px; z-index: 60; }
.toast { max-width: min(380px, calc(100vw - 44px)); padding: 12px 15px; border: 1px solid var(--line-strong); border-left: 3px solid var(--cyan); border-radius: 3px; background: #13272d; color: var(--ink); box-shadow: var(--shadow); font-size: 0.78rem; animation: toast-in 180ms ease both; }
.toast.error { border-left-color: var(--red); }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } }

@media (max-width: 1150px) {
  .board { grid-template-columns: repeat(2, minmax(260px, 1fr)); }
  .metrics { display: none; }
}

@media (max-width: 760px) {
  .topbar { height: 64px; }
  .source-state { display: none; }
  .site-return { margin-right: 0; font-size: 0; }
  .site-return::before { content: "← Site"; font-size: 0.62rem; }
  .header-actions .button-primary { width: 38px; padding: 0; font-size: 0; }
  .header-actions .button-primary span { font-size: 1.15rem; }
  main { padding-top: 28px; }
  h1 { font-size: 2.25rem; }
  .toolbar { align-items: stretch; flex-wrap: wrap; }
  .search-control { flex-basis: 100%; border: 0; border-bottom: 1px solid var(--line); }
  .filter-group { flex: 1; }
  .filter-group label { flex: 1; }
  .filter-group select { width: 100%; }
  .result-count { align-self: center; }
  .board { grid-template-columns: 1fr; }
  .column { scroll-margin-top: 75px; }
  .move-actions { display: flex; }
}

@media (max-width: 480px) {
  .brand small { display: none; }
  .filter-group { flex-wrap: wrap; }
  .filter-group label { flex: 1 1 140px; }
  .result-count { width: 100%; margin: 0 6px 4px; }
  .form-grid { grid-template-columns: 1fr; }
  .dialog-actions { grid-template-columns: 1fr 1fr; }
  .dialog-actions span { display: none; }
  .dialog-actions .button { width: 100%; }
}

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

/* Card reference, e.g. SL-12 — the handle a person says out loud. Quiet: it is
   for finding a card, not for reading down the column. */
.card-key {
  flex: 0 0 auto;
  color: #88dce9;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
  font: 700 0.68rem/1 ui-monospace, "Cascadia Mono", monospace;
  opacity: 0.78;
}