/* Default = DARK theme. [data-theme="light"] overrides at the bottom. */
:root {
  --bg: #0b1220;
  --panel: #0f172a;
  --ink: #e5e7eb;
  --muted: #94a3b8;
  --line: #1f2937;
  --head: #1e293b;
  --head-ink: #bfdbfe;
  --row-head-bg: #182234;
  --accent: #60a5fa;
  --accent-ink: #3b82f6;
  --cell-bg: #0f172a;
  --cell-hover: #122036;
  --add-bg: #0d1626;
  --add-hover: #15233b;
  --topbar-bg: rgba(15, 23, 42, .7);
  --modal-bg: #0f172a;
  --modal-shadow: 0 20px 60px rgba(0,0,0,.6);
  --input-bg: #0b1220;
  --landing-glow-1: rgba(59, 130, 246, .18);
  --landing-glow-2: rgba(236, 72, 153, .12);
  --hover-overlay: rgba(255,255,255,.06);
  --grid-header-shadow: inset 0 -1px 0 rgba(255,255,255,.04);

  --A: #3b82f6;   /* blue  - Accountable */
  --R: #22c55e;   /* green - Responsible */
  --C: #facc15;   /* yellow - Consulted */
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.35);
  --radius: 12px;
}

[data-theme="light"] {
  --bg: #f6f8fc;
  --panel: #ffffff;
  --ink: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --head: #cfe4ff;
  --head-ink: #0b3a73;
  --row-head-bg: #eaf3ff;
  --accent: #3b82f6;
  --accent-ink: #1d4ed8;
  --cell-bg: #ffffff;
  --cell-hover: #f0f9ff;
  --add-bg: #f8fafc;
  --add-hover: #eef5ff;
  --topbar-bg: rgba(255,255,255,.7);
  --modal-bg: #ffffff;
  --modal-shadow: 0 20px 60px rgba(0,0,0,.25);
  --input-bg: #ffffff;
  --landing-glow-1: #e0ecff;
  --landing-glow-2: #ffe9f1;
  --hover-overlay: rgba(0,0,0,.04);
  --grid-header-shadow: none;

  --A: #2563eb;
  --R: #16a34a;
  --C: #facc15;
  --shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 8px 24px rgba(15, 23, 42, .06);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 100% -10%, var(--landing-glow-1) 0%, transparent 60%),
    radial-gradient(900px 500px at -10% 110%, var(--landing-glow-2) 0%, transparent 60%),
    var(--bg);
  min-height: 100vh;
  transition: background-color .25s ease, color .25s ease;
}

.hidden { display: none !important; }
.muted { color: var(--muted); }

/* Topbar */
.topbar {
  display: flex; align-items: center; gap: 16px;
  padding: 14px 22px;
  border-bottom: 1px solid var(--line);
  background: var(--topbar-bg);
  backdrop-filter: saturate(140%) blur(8px);
  position: sticky; top: 0; z-index: 10;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: inherit; }
.brand-mark {
  width: 26px; height: 26px; border-radius: 7px;
  background: linear-gradient(135deg, var(--A), var(--R) 60%, var(--C));
  box-shadow: var(--shadow);
}
.brand-name { font-weight: 700; letter-spacing: -.01em; }
.brand-name small { font-weight: 500; color: var(--muted); margin-left: 4px; }
.presence { display: flex; gap: -4px; margin-left: auto; }
.presence .avatar {
  width: 28px; height: 28px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; font-size: 12px; font-weight: 600;
  border: 2px solid var(--panel); margin-left: -6px;
  box-shadow: 0 1px 2px rgba(0,0,0,.2);
}

/* Theme toggle */
.theme-toggle {
  width: 36px; height: 36px; border-radius: 50%;
  border: 1px solid var(--line); background: var(--panel);
  color: var(--ink); cursor: pointer; font-size: 16px;
  display: inline-flex; align-items: center; justify-content: center;
  transition: transform .2s, box-shadow .15s, border-color .15s;
}
.theme-toggle:hover { border-color: var(--accent); box-shadow: var(--shadow); }
.theme-toggle:active { transform: scale(.95); }
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: inline; }
[data-theme="light"] .theme-toggle .icon-sun  { display: inline; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }

/* Buttons */
.btn {
  appearance: none; border: 1px solid var(--line); background: var(--panel);
  color: var(--ink); padding: 9px 14px; border-radius: 10px;
  font-size: 14px; font-weight: 600; cursor: pointer;
  transition: transform .05s ease, box-shadow .15s ease, border-color .15s;
}
.btn:hover { border-color: var(--accent); box-shadow: var(--shadow); }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-ink); border-color: var(--accent-ink); }
.btn-ghost { background: transparent; }

/* Landing */
.landing {
  max-width: 760px; margin: 8vh auto; padding: 32px 24px;
  text-align: center;
}
.landing h1 {
  font-size: clamp(28px, 4.4vw, 48px);
  letter-spacing: -.02em; margin: 0 0 12px;
}
.landing .lead { color: var(--muted); font-size: 17px; margin: 0 auto 28px; max-width: 56ch; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; align-items: center; }
.join { display: flex; gap: 8px; }
.join input {
  border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 12px; font-size: 14px; min-width: 240px;
  background: var(--input-bg); color: var(--ink);
}
.legend-preview {
  margin-top: 32px; color: var(--muted); display: inline-flex; flex-wrap: wrap;
  gap: 8px; align-items: center; padding: 10px 14px; background: var(--panel);
  border: 1px solid var(--line); border-radius: 999px; box-shadow: var(--shadow);
}
.legend-preview .chip { margin-left: 4px; }
.legend-preview .chip + * { margin-right: 8px; }

/* Chips / swatches */
.chip, .swatch {
  display: inline-flex; align-items: center; justify-content: center;
  width: 22px; height: 22px; border-radius: 5px;
  font-size: 11px; font-weight: 800; color: #fff;
  border: none;
}
.chip-A, .swatch-A { background: var(--A); }
.chip-R, .swatch-R { background: var(--R); }
.chip-C, .swatch-C { background: var(--C); color: #4b3c00; }

/* Board */
.board { padding: 18px 22px 60px; }
.board-head {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center;
  margin-bottom: 14px;
}
.board-title {
  flex: 1 1 280px; min-width: 200px;
  font-size: 22px; font-weight: 700; letter-spacing: -.01em;
  border: 1px solid transparent; background: transparent;
  padding: 6px 10px; border-radius: 8px; color: var(--ink);
}
.board-title:hover { background: var(--panel); border-color: var(--line); }
.board-title:focus { outline: none; background: var(--panel); border-color: var(--accent); }

.palette {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 12px; background: var(--panel); border: 1px solid var(--line);
  border-radius: 999px; box-shadow: var(--shadow);
}
.swatch {
  width: 28px; height: 28px; border-radius: 7px; cursor: grab;
  font-size: 13px;
  box-shadow: 0 1px 2px rgba(0,0,0,.2), inset 0 -2px 0 rgba(0,0,0,.18);
}
.swatch:active { cursor: grabbing; }
.palette-hint { color: var(--muted); font-size: 12px; margin-left: 4px; }
.trash {
  margin-left: 6px; padding: 4px 8px; border-radius: 8px;
  font-size: 16px; user-select: none; cursor: default;
  border: 1px dashed transparent;
}
.trash.drag-over { border-color: #ef4444; background: rgba(239, 68, 68, .12); }

/* Grid */
.grid-wrap {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); overflow: auto;
}
.raci-grid {
  border-collapse: separate; border-spacing: 0; width: 100%;
  font-size: 14px; color: var(--ink);
}
.raci-grid th, .raci-grid td {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 10px 12px; vertical-align: middle;
}
.raci-grid thead th {
  background: var(--head); color: var(--head-ink);
  font-weight: 700; text-align: center;
  position: sticky; top: 0; z-index: 2;
  box-shadow: var(--grid-header-shadow);
}
.raci-grid tbody th {
  background: var(--row-head-bg); color: var(--head-ink);
  text-align: left; font-weight: 700;
  position: sticky; left: 0; z-index: 1;
  min-width: 200px;
}
.raci-grid tbody th.row-head { background: var(--row-head-bg); }
.raci-grid td {
  background: var(--cell-bg); min-width: 130px; height: 56px;
  text-align: center;
}
.raci-grid td.drag-over { background: var(--cell-hover); outline: 2px dashed var(--accent); outline-offset: -2px; }

/* Header inputs */
.head-edit, .row-edit {
  width: 100%; border: 1px solid transparent; background: transparent;
  font: inherit; color: inherit; padding: 4px 6px; border-radius: 6px;
  text-align: inherit;
}
.head-edit:hover, .row-edit:hover { background: var(--hover-overlay); }
.head-edit:focus, .row-edit:focus { outline: none; background: var(--panel); border-color: var(--accent); color: var(--ink); }

.row-actions, .col-actions {
  display: inline-flex; gap: 4px; margin-left: 6px; opacity: 0;
  transition: opacity .15s;
}
tr:hover .row-actions, th:hover .col-actions { opacity: 1; }
.icon-btn {
  border: none; background: transparent; color: var(--muted);
  cursor: pointer; font-size: 14px; padding: 2px 4px; border-radius: 4px;
}
.icon-btn:hover { background: var(--hover-overlay); color: var(--ink); }

/* Add buttons row/col */
.add-row td, .add-col {
  background: var(--add-bg); color: var(--accent);
  text-align: center; cursor: pointer; font-weight: 600;
}
.add-row td:hover, .add-col:hover { background: var(--add-hover); }

/* Markers */
.markers { display: inline-flex; flex-wrap: wrap; gap: 4px; justify-content: center; }
.marker {
  width: 22px; height: 22px; border-radius: 5px; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; font-size: 11px; font-weight: 800;
  box-shadow: 0 1px 2px rgba(0,0,0,.25), inset 0 -2px 0 rgba(0,0,0,.18);
  transition: transform .08s;
}
.marker:hover { transform: translateY(-1px) scale(1.05); }
.marker[data-type="A"] { background: var(--A); }
.marker[data-type="R"] { background: var(--R); }
.marker[data-type="C"] { background: var(--C); color: #4b3c00; }

/* Legend */
.legend { margin-top: 12px; color: var(--ink); display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.legend .chip + * { margin-right: 6px; }

/* Modal */
.modal {
  position: fixed; inset: 0; background: rgba(0, 0, 0, .6);
  display: grid; place-items: center; z-index: 50; padding: 16px;
}
.modal-card {
  background: var(--modal-bg); border-radius: 16px; padding: 22px; width: 100%;
  max-width: 380px; box-shadow: var(--modal-shadow);
  position: relative; text-align: center; color: var(--ink);
  border: 1px solid var(--line);
}
.modal-card h2 { margin: 0 0 14px; font-size: 18px; }
.modal-close {
  position: absolute; top: 8px; right: 10px;
  background: transparent; border: none; font-size: 22px; cursor: pointer; color: var(--muted);
}
.qrcode {
  display: grid; place-items: center;
  margin: 6px auto 14px; padding: 12px;
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  width: max-content;
}
.field { display: block; text-align: left; margin-bottom: 10px; font-size: 13px; color: var(--muted); }
.field span { display: block; margin-bottom: 4px; }
.field input {
  width: 100%; padding: 8px 10px; border: 1px solid var(--line);
  border-radius: 8px; font: inherit; color: var(--ink); background: var(--input-bg);
}

/* Toast */
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%);
  background: #0f172a; color: #fff; padding: 10px 14px; border-radius: 999px;
  font-size: 13px; z-index: 60; box-shadow: 0 6px 20px rgba(0,0,0,.4);
  border: 1px solid var(--line);
}

/* Footer */
.site-footer {
  text-align: center; padding: 18px 16px 28px;
  color: var(--muted); font-size: 13px;
  border-top: 1px solid var(--line); margin-top: 24px;
}
.site-footer a { color: var(--accent); text-decoration: none; font-weight: 600; }
.site-footer a:hover { text-decoration: underline; }

@media (max-width: 640px) {
  .topbar { padding: 10px 14px; }
  .board { padding: 14px; }
  .raci-grid tbody th { min-width: 140px; }
}