/* ═══════════════════════════════════════════════════════════════════════
   IBC Task Tracker — Design System v4
   Claude warmth + Apple precision · System fonts · Light mode only
   ═══════════════════════════════════════════════════════════════════════ */

:root {
  /* ── Surfaces ────────────────────────────────────────── */
  --bg:           #FAF9F5;
  --bg-subtle:    #F5F3ED;
  --card:         #FFFFFF;
  --card-alt:     #F5F3ED;
  --card-inset:   #F0EDE5;

  /* ── Ink ─────────────────────────────────────────────── */
  --ink:          #1E1E1C;
  --ink-muted:    #7B7A73;
  --ink-dim:      #ACAAA0;
  --ink-inverse:  #FAF9F5;

  /* ── Lines (warm hairlines) ──────────────────────────── */
  --line:         rgba(20, 20, 19, 0.08);
  --line-strong:  rgba(20, 20, 19, 0.14);

  /* ── Accent (Claude-adjacent terracotta) ─────────────── */
  --accent:       #C96442;
  --accent-soft:  #F7ECE4;
  --accent-hover: #B0553A;

  /* ── Status (all muted, 30% less saturation than default) */
  --ok:         #527A3F;
  --ok-soft:    #EAF0E3;
  --warn:       #A0761E;
  --warn-soft:  #F5EBD6;
  --danger:     #A54B3C;
  --danger-soft:#F0E1DC;
  --info:       #3F6B91;
  --info-soft:  #E3EAF1;
  --neutral-soft: #F0EDE5;

  /* ── Typography (system fonts — no web font loading) ──── */
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
               "Helvetica Neue", "Noto Sans", system-ui, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", "Consolas",
               "Roboto Mono", monospace;

  /* ── Radii ───────────────────────────────────────────── */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 14px;
  --r-xl: 18px;

  /* ── Shadows (very subtle, Apple-like) ───────────────── */
  --shadow-xs: 0 1px 2px rgba(20, 20, 19, 0.04);
  --shadow-sm: 0 2px 6px rgba(20, 20, 19, 0.06);
}

/* ═══════════ Base ═══════════════════════════════════════════════════════ */
* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  font-feature-settings: "ss01", "cv11";
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  line-height: 1.5;
  letter-spacing: -0.003em;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 500; letter-spacing: -0.02em; line-height: 1.2; }
h1 { font-size: 24px; }
h2 { font-size: 18px; }
h3 { font-size: 15px; }
p { margin: 0; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; text-underline-offset: 3px; }
code, pre { font-family: var(--font-mono); font-size: 12px; }

/* ═══════════ Layout ════════════════════════════════════════════════════ */
.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 24px;
}
main.container { padding-top: 24px; padding-bottom: 40px; }

/* ═══════════ Navigation ════════════════════════════════════════════════ */
.nav {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px 24px;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.nav-brand { display: flex; align-items: center; gap: 10px; font-weight: 500; letter-spacing: -0.01em; color: var(--ink); }
.nav-logo {
  width: 26px; height: 26px; background: var(--ink); color: var(--bg);
  border-radius: var(--r-sm); display: inline-flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 500; letter-spacing: -0.02em;
}
.nav-sep { color: var(--ink-dim); font-weight: 300; }
.nav-link {
  color: var(--ink-muted);
  font-size: 13px;
  font-weight: 400;
  padding: 4px 0;
  border-bottom: 1.5px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.nav-link:hover { color: var(--ink); text-decoration: none; }
.nav-link.active { color: var(--ink); font-weight: 500; border-bottom-color: var(--accent); }
.nav-meta { margin-left: auto; display: flex; align-items: center; gap: 12px; font-size: 12px; color: var(--ink-muted); }
.nav-mode-badge { padding: 2px 8px; border-radius: 999px; font-size: 10.5px; font-weight: 500; letter-spacing: 0.02em; }
.nav-mode-badge.live    { background: var(--ok-soft); color: var(--ok); }
.nav-mode-badge.preview { background: var(--warn-soft); color: var(--warn); }

.avatar {
  width: 26px; height: 26px; background: var(--accent-soft); color: var(--accent);
  border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;
  font-size: 10.5px; font-weight: 500; letter-spacing: 0.01em;
}

/* ═══════════ Page header ═══════════════════════════════════════════════ */
.page-head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 22px; flex-wrap: wrap; }
.page-title { font-size: 24px; font-weight: 500; letter-spacing: -0.022em; line-height: 1.1; }
.page-sub { font-size: 12.5px; color: var(--ink-muted); }

/* ═══════════ KPI cards ═════════════════════════════════════════════════ */
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 24px; }
.kpi { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-md); padding: 16px 18px; }
.kpi-val { font-size: 28px; font-weight: 300; letter-spacing: -0.03em; line-height: 1; color: var(--ink); }
.kpi-val.ok     { color: var(--ok); }
.kpi-val.warn   { color: var(--warn); }
.kpi-val.danger { color: var(--danger); }
.kpi-val.info   { color: var(--info); }
.kpi-lbl { font-size: 10.5px; color: var(--ink-muted); text-transform: uppercase; letter-spacing: 0.06em; margin-top: 6px; font-weight: 500; }

/* ═══════════ Filter bar ════════════════════════════════════════════════ */
.filters {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 14px 16px;
  display: flex;
  gap: 14px;
  align-items: end;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.filter-group { display: flex; flex-direction: column; gap: 5px; min-width: 130px; }
.filter-lbl { font-size: 10px; color: var(--ink-muted); text-transform: uppercase; letter-spacing: 0.06em; font-weight: 500; }
.filter-ctrl, .input, .select {
  padding: 7px 10px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  font-size: 12.5px;
  background: var(--card);
  color: var(--ink);
  font-family: inherit;
  line-height: 1.3;
}
.filter-ctrl:focus, .input:focus, .select:focus {
  outline: 2px solid var(--accent-soft);
  outline-offset: -1px;
  border-color: var(--accent);
}
.filter-clear {
  font-size: 11.5px;
  color: var(--ink-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 7px 6px;
  align-self: end;
}
.filter-clear:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }

/* ═══════════ Tables ════════════════════════════════════════════════════ */
.tbl-wrap { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-md); overflow: hidden; }
.tbl-scroll { overflow-x: auto; }
table.tbl { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.tbl thead th {
  background: var(--card);
  color: var(--ink-muted);
  font-size: 10.5px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line-strong);
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  position: sticky;
  top: 0;
}
.tbl thead th:hover { color: var(--ink); }
.tbl thead th.sorted { color: var(--ink); }
.tbl tbody td {
  padding: 13px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  line-height: 1.45;
}
.tbl tbody tr:last-child td { border-bottom: 0; }
.tbl tbody tr.clickable { cursor: pointer; transition: background 0.12s ease; }
.tbl tbody tr.clickable:hover td { background: var(--card-alt); }

/* section rows within the table (programme grouping) */
.tbl tr.section-row td {
  background: var(--bg);
  font-size: 11.5px;
  font-weight: 500;
  color: var(--ink);
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  letter-spacing: -0.005em;
}
.tbl tr.section-row .section-meta { color: var(--ink-muted); font-weight: 400; margin-left: 8px; font-size: 11px; }

.tbl tr.attention-row { background: rgba(165, 75, 60, 0.035); }
.tbl tr.attention-row.clickable:hover td { background: rgba(165, 75, 60, 0.08); }

/* ═══════════ Pills & chips ════════════════════════════════════════════ */
.pill {
  display: inline-block;
  font-size: 10.5px;
  padding: 2px 9px;
  border-radius: 999px;
  font-weight: 500;
  line-height: 1.6;
  letter-spacing: 0.005em;
  background: var(--neutral-soft);
  color: var(--ink-muted);
  white-space: nowrap;
}
.pill.ok      { background: var(--ok-soft);     color: var(--ok); }
.pill.warn    { background: var(--warn-soft);   color: var(--warn); }
.pill.danger  { background: var(--danger-soft); color: var(--danger); }
.pill.info    { background: var(--info-soft);   color: var(--info); }
.pill.accent  { background: var(--accent-soft); color: var(--accent); }
.pill.neutral { background: var(--neutral-soft); color: var(--ink-muted); }

/* Type pill (squared, smaller) */
.pill-type {
  display: inline-block;
  font-size: 10px;
  padding: 1.5px 7px;
  border-radius: 5px;
  font-weight: 500;
  background: var(--neutral-soft);
  color: var(--ink);
  letter-spacing: 0.005em;
}

/* Activity chips — monospaced data */
.chip-done, .chip-out, .chip-next {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  margin-right: 4px;
  letter-spacing: -0.02em;
}
.chip-done { color: var(--ok); }
.chip-out  { color: var(--danger); }
.chip-next { color: var(--info); }

/* ═══════════ Buttons ═══════════════════════════════════════════════════ */
.btn, button.btn {
  font-family: inherit;
  font-size: 12.5px;
  padding: 8px 14px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line-strong);
  background: var(--card);
  color: var(--ink);
  cursor: pointer;
  font-weight: 500;
  letter-spacing: -0.005em;
  transition: background 0.12s ease, border-color 0.12s ease, transform 0.1s ease;
}
.btn:hover { background: var(--card-alt); border-color: var(--line-strong); }
.btn:active { transform: translateY(0.5px); }
.btn:focus { outline: 2px solid var(--accent-soft); outline-offset: 1px; }
.btn-primary {
  background: var(--ink);
  color: var(--ink-inverse);
  border-color: var(--ink);
}
.btn-primary:hover { background: #353432; border-color: #353432; }
.btn-accent {
  background: var(--accent);
  color: #FFFFFF;
  border-color: var(--accent);
}
.btn-accent:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-subtle {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink-muted);
}
.btn-subtle:hover { color: var(--ink); background: var(--card-alt); }
.btn-sm { padding: 5px 10px; font-size: 11.5px; }
.btn-xs { padding: 3px 8px; font-size: 11px; }

/* Danger row action buttons (outstanding bucket) */
.btn-danger-outline {
  background: var(--card);
  border: 1px solid var(--danger);
  color: var(--danger);
  font-size: 11px;
  padding: 3px 9px;
  border-radius: var(--r-sm);
  cursor: pointer;
  font-weight: 500;
  margin-right: 4px;
}
.btn-danger-outline:hover { background: var(--danger-soft); }

/* ═══════════ Forms (Add Activity etc.) ═════════════════════════════════ */
.form-panel {
  background: var(--accent-soft);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 18px 20px;
  margin-bottom: 18px;
}
.form-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 14px; }
.form-title { font-size: 11.5px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink); }
.form-reqnote { font-size: 10.5px; color: var(--ink-muted); }
.form-row { margin-bottom: 12px; }
.form-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 12px; }
.form-label {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 5px;
  letter-spacing: -0.005em;
}
.form-help { font-size: 10.5px; color: var(--ink-muted); margin-top: 4px; }
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  font-size: 12.5px;
  background: var(--card);
  color: var(--ink);
  font-family: inherit;
  line-height: 1.4;
}
.form-textarea { resize: vertical; min-height: 60px; }
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: 2px solid var(--accent-soft);
  outline-offset: -1px;
  border-color: var(--accent);
}

/* Segmented control (used for Status Planned/Done/Cancelled) */
.seg { display: flex; gap: 6px; }
.seg-opt {
  flex: 1;
  padding: 7px 10px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  font-size: 11.5px;
  cursor: pointer;
  text-align: center;
  background: var(--card);
  color: var(--ink);
  font-weight: 500;
  user-select: none;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}
.seg-opt:hover { background: var(--card-alt); }
.seg-opt.active { background: var(--ink); color: var(--ink-inverse); border-color: var(--ink); }

/* Chip selector (multi-task linker) */
.chip-selector {
  background: var(--card);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  padding: 7px 9px;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  align-items: center;
  min-height: 36px;
}
.chip-task {
  background: var(--info-soft);
  color: var(--info);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  padding: 3px 9px;
  border-radius: var(--r-sm);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.chip-task.primary { background: var(--accent-soft); color: var(--accent); }
.chip-task-label { font-size: 9.5px; opacity: 0.75; text-transform: uppercase; letter-spacing: 0.05em; }
.chip-task-x { cursor: pointer; opacity: 0.6; padding-left: 3px; }
.chip-task-x:hover { opacity: 1; }
.chip-selector input {
  flex: 1;
  border: 0;
  outline: 0;
  font-size: 12px;
  padding: 4px;
  min-width: 140px;
  background: transparent;
  color: var(--ink);
  font-family: inherit;
}

.form-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
.form-status { font-size: 11px; color: var(--ink-muted); margin-left: auto; }

/* ═══════════ Activity buckets (task.html) ═════════════════════════════ */
.bucket { margin-bottom: 22px; }
.bucket-head { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.bucket-icon {
  width: 18px; height: 18px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 10px; font-weight: 500;
}
.bucket-icon.ok     { background: var(--ok-soft);     color: var(--ok); }
.bucket-icon.danger { background: var(--danger-soft); color: var(--danger); }
.bucket-icon.info   { background: var(--info-soft);   color: var(--info); }
.bucket-icon.neutral{ background: var(--neutral-soft); color: var(--ink-muted); }
.bucket-label { font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-muted); }
.bucket-list {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}
.bucket-list.danger-bg {
  background: var(--danger-soft);
  border-color: var(--danger);
}
.bucket-list.empty {
  padding: 18px;
  text-align: center;
  color: var(--ink-muted);
  font-size: 12px;
}
.activity-row { padding: 12px 16px; border-bottom: 1px solid var(--line); display: flex; gap: 14px; align-items: baseline; }
.activity-row:last-child { border-bottom: 0; }
.activity-date { font-family: var(--font-mono); font-size: 11px; color: var(--ink-muted); min-width: 82px; letter-spacing: -0.02em; }
.activity-date.info { color: var(--info); font-weight: 500; }
.activity-date.danger { color: var(--danger); font-weight: 500; }
.activity-body { flex: 1; }
.activity-title { font-size: 13px; font-weight: 500; color: var(--ink); line-height: 1.35; }
.activity-meta { font-size: 11px; color: var(--ink-muted); margin-top: 3px; }
.activity-outcome { font-size: 11.5px; color: var(--ink-muted); margin-top: 4px; line-height: 1.45; }
.activity-outcome .label { color: var(--ok); font-weight: 500; }
.activity-notes {
  font-size: 11.5px;
  background: var(--card);
  padding: 7px 10px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line-strong);
  margin-top: 6px;
  line-height: 1.45;
  color: var(--ink);
}
.activity-notes strong { color: var(--danger); }
.activity-links { font-size: 10.5px; color: var(--ink-muted); margin-top: 5px; display: flex; gap: 5px; align-items: center; flex-wrap: wrap; }

/* Multi-task indicator */
.multi-badge {
  font-size: 9.5px;
  background: var(--neutral-soft);
  color: var(--ink-muted);
  padding: 1.5px 6px;
  border-radius: 4px;
  margin-left: 6px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* ═══════════ Utilities ═════════════════════════════════════════════════ */
.mono { font-family: var(--font-mono); font-size: 11px; color: var(--ink); letter-spacing: -0.01em; }
.muted { color: var(--ink-muted); }
.dim { color: var(--ink-dim); }
.no-print { }
.sort-indicator { margin-left: 4px; font-size: 8px; opacity: 0.7; }
.hairline { border-top: 1px solid var(--line); }

.overdue-text { color: var(--danger); font-weight: 500; }
.stale-text { color: var(--warn); }

.sub-text { font-size: 10.5px; color: var(--ink-muted); margin-bottom: 2px; }

.skeleton {
  background: linear-gradient(90deg, var(--card-alt) 25%, var(--card-inset) 50%, var(--card-alt) 75%);
  background-size: 200% 100%;
  animation: sk 1.3s linear infinite;
  border-radius: var(--r-sm);
}
@keyframes sk { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

.error-banner {
  padding: 14px 16px;
  background: var(--danger-soft);
  border: 1px solid var(--danger);
  border-radius: var(--r-md);
  color: var(--danger);
  font-size: 12.5px;
  margin: 14px 0;
}
.error-banner code { background: rgba(0, 0, 0, 0.05); padding: 1px 5px; border-radius: 3px; }

/* Toast */
.toast {
  background: var(--ok-soft);
  border: 1px solid var(--ok);
  color: var(--ok);
  padding: 10px 14px;
  border-radius: var(--r-md);
  font-size: 12.5px;
  margin: 12px 0;
}

/* ═══════════ Print ═════════════════════════════════════════════════════ */
@media print {
  .nav, .no-print, .filters { display: none !important; }
  body { background: #fff; font-size: 11px; }
  .tbl-wrap { border: 0; }
}