/* ============================================================
   Design tokens
   ============================================================ */
:root {
  /* Surfaces */
  --bg: #f6f7fb;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --surface-hover: #f1f5f9;

  /* Text */
  --text: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-inverse: #f8fafc;

  /* Borders */
  --border: #e2e8f0;
  --border-strong: #cbd5e1;

  /* Brand — soft indigo */
  --brand: #4f46e5;
  --brand-hover: #4338ca;
  --brand-soft: #eef2ff;
  --brand-ring: rgba(79, 70, 229, 0.18);

  /* Status */
  --success: #16a34a;
  --success-soft: #dcfce7;
  --success-ink: #14532d;
  --warning: #d97706;
  --warning-soft: #fef3c7;
  --warning-ink: #92400e;
  --error: #dc2626;
  --error-soft: #fee2e2;
  --error-ink: #7f1d1d;
  --info: #2563eb;
  --info-soft: #dbeafe;
  --info-ink: #1e3a8a;

  /* Header */
  --header-bg: linear-gradient(180deg, #0f172a 0%, #111827 100%);
  --header-text: #cbd5e1;
  --header-text-active: #ffffff;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08), 0 2px 4px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 10px 25px rgba(15, 23, 42, 0.10), 0 4px 10px rgba(15, 23, 42, 0.05);

  /* Radii */
  --r-sm: 6px;
  --r-md: 8px;
  --r-lg: 12px;
  --r-pill: 999px;

  /* Easing */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================
   Reset & base
   ============================================================ */
* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 15px;
  line-height: 1.5;
}

h1 {
  margin: 0 0 0.4rem;
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}
h2 { font-weight: 600; letter-spacing: -0.01em; }
h2.section-h {
  margin: 1.75rem 0 0.75rem;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}

a { color: var(--brand); text-decoration: none; }
a:hover { color: var(--brand-hover); }

code, pre {
  font-family: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  font-size: 0.875em;
}

/* ============================================================
   Layout — header & main
   ============================================================ */
header {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 0.85rem 1.75rem;
  background: var(--header-bg);
  color: white;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 50;
}

header .brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 700;
  font-size: 1.05rem;
  color: white;
  letter-spacing: -0.01em;
}
header .brand-mark { color: #a5b4fc; flex: 0 0 auto; }

header nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
header nav a {
  color: var(--header-text);
  padding: 0.4rem 0.75rem;
  border-radius: var(--r-sm);
  font-size: 0.92rem;
  font-weight: 500;
  transition: background 0.15s var(--ease), color 0.15s var(--ease);
}
header nav a:hover { color: white; background: rgba(255, 255, 255, 0.06); }
header nav a.active {
  color: white;
  background: rgba(255, 255, 255, 0.10);
}

main {
  max-width: 1400px;
  margin: 2rem auto;
  padding: 0 1.75rem;
}

/* ============================================================
   Utilities
   ============================================================ */
.muted { color: var(--text-secondary); font-size: 0.9rem; }
.small { font-size: 0.78rem; }
.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  gap: 1rem;
  flex-wrap: wrap;
}
.actions { display: flex; gap: 0.4rem; align-items: center; }

/* ============================================================
   Cards
   ============================================================ */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 1.25rem 1.4rem;
  box-shadow: var(--shadow-xs);
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s var(--ease), box-shadow 0.15s var(--ease), border-color 0.15s var(--ease);
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}
.card h2 {
  margin: 0 0 0.15rem;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}
.card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
}

/* ============================================================
   Tables
   ============================================================ */
table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
  font-variant-numeric: tabular-nums;
}
th, td {
  padding: 0.7rem 0.95rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.92rem;
  vertical-align: middle;
}
th {
  background: var(--surface-2);
  font-weight: 600;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
}
tbody tr { transition: background 0.12s var(--ease); }
tbody tr:hover { background: var(--surface-hover); }
tr:last-child td { border-bottom: none; }

/* ============================================================
   Forms
   ============================================================ */
form.inline {
  --form-h: 38px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  padding: 1rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-xs);
  margin-bottom: 1.25rem;
}
form.inline > label,
form.inline > .elig-group,
form.inline > button,
form.inline > a > button {
  height: var(--form-h);
}
form.inline label {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
form.inline input[type="text"],
form.inline input[type="number"],
form.inline input[type="date"],
form.inline select {
  height: var(--form-h);
  padding: 0 0.7rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-sm);
  font-size: 0.92rem;
  font-family: inherit;
  font-weight: 400;
  color: var(--text);
  background: var(--surface);
  text-transform: none;
  letter-spacing: 0;
  line-height: 1;
  transition: border-color 0.15s var(--ease), box-shadow 0.15s var(--ease);
}
form.inline input[type="number"] { width: 5.5rem; }
form.inline input[type="date"] { font-variant-numeric: tabular-nums; }
form.inline input:focus,
form.inline select:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-ring);
}
form.inline input::placeholder { color: var(--text-muted); }

form.inline label.checkbox {
  height: auto;
  gap: 0.35rem;
  text-transform: none;
  letter-spacing: 0;
  font-weight: 500;
  font-size: 0.85rem;
  color: var(--text);
}
form.inline label.checkbox input { margin: 0; }

form.inline > button,
form.inline > a > button {
  padding: 0 0.95rem;
  line-height: 1;
}

.elig-group {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0 0.85rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-sm);
  background: var(--surface-2);
}
.elig-label {
  font-size: 0.66rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-weight: 700;
  padding-right: 0.2rem;
  border-right: 1px solid var(--border);
  margin-right: 0.1rem;
  padding: 0.15rem 0.6rem 0.15rem 0;
}

.elig-cell { text-align: center; }
.elig-cell .yes { color: var(--success); font-weight: 700; }
.elig-cell .no { color: var(--text-muted); }

.fill-pill {
  display: inline-block;
  background: var(--brand-soft);
  color: var(--brand);
  padding: 0.15rem 0.55rem;
  border-radius: var(--r-pill);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* ============================================================
   Buttons
   ============================================================ */
button, .btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--brand);
  color: white;
  border: 1px solid transparent;
  padding: 0.5rem 0.95rem;
  border-radius: var(--r-sm);
  font-size: 0.9rem;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  box-shadow: var(--shadow-xs);
  transition: background 0.15s var(--ease), box-shadow 0.15s var(--ease), transform 0.05s var(--ease);
}
button:hover { background: var(--brand-hover); box-shadow: var(--shadow-sm); }
button:active { transform: translateY(1px); }
button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--brand-ring);
}

button.secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-xs);
}
button.secondary:hover {
  background: var(--surface-hover);
  border-color: var(--text-muted);
}

button.danger { background: var(--error); }
button.danger:hover { background: #b91c1c; }

/* ============================================================
   Empty state
   ============================================================ */
.empty {
  padding: 2.5rem 1rem;
  text-align: center;
  color: var(--text-secondary);
  background: var(--surface);
  border: 1px dashed var(--border-strong);
  border-radius: var(--r-lg);
}

/* ============================================================
   Schedule layout
   ============================================================ */
.schedule-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 1.5rem;
  align-items: start;
}

/* ----- Sidebar ----- */
.sidebar {
  position: sticky;
  top: 5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 1rem 1.05rem;
  box-shadow: var(--shadow-xs);
  max-height: calc(100vh - 6rem);
  overflow-y: auto;
}
.sidebar h3 {
  margin: 0 0 0.25rem;
  font-size: 0.74rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-secondary);
}
.sidebar p.muted { margin: 0 0 0.85rem; font-size: 0.78rem; }

/* Provider drag cards */
.provider-card {
  background: var(--prov-color, var(--brand-soft));
  border: 1px solid rgba(15, 23, 42, 0.06);
  border-left: 4px solid var(--prov-color, var(--brand));
  border-radius: var(--r-md);
  padding: 0.55rem 0.7rem;
  margin-bottom: 0.5rem;
  cursor: grab;
  user-select: none;
  transition: transform 0.12s var(--ease), box-shadow 0.12s var(--ease), filter 0.12s var(--ease);
}
.provider-card:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
  filter: brightness(0.98);
}
.provider-card.dragging {
  opacity: 0.4;
  cursor: grabbing;
  transform: scale(0.98);
}

.skip-card {
  background: repeating-linear-gradient(135deg, #f8fafc 0 8px, #eef2f7 8px 16px);
  border: 1px dashed var(--border-strong);
  border-radius: var(--r-md);
  padding: 0.45rem 0.7rem;
  margin-bottom: 0.7rem;
  cursor: grab;
  user-select: none;
  transition: transform 0.12s var(--ease), box-shadow 0.12s var(--ease);
}
.skip-card:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
  border-color: var(--text-muted);
}
.skip-card.dragging { opacity: 0.4; cursor: grabbing; transform: scale(0.98); }
.skip-card .pcard-name {
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}
.skip-card .pcard-elig span {
  background: transparent;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: none;
  padding: 0;
}
.pcard-name {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text);
}
.pcard-name .muted { font-weight: 500; color: var(--text-secondary); }
.pcard-totals {
  font-size: 0.74rem;
  color: var(--text-secondary);
  margin-top: 0.3rem;
  display: flex;
  gap: 0.55rem;
  font-variant-numeric: tabular-nums;
}
.pcard-totals strong { color: var(--text); font-weight: 600; }
.pcard-elig {
  font-size: 0.65rem;
  margin-top: 0.35rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem;
}
.pcard-elig span {
  background: rgba(255, 255, 255, 0.7);
  color: var(--text-secondary);
  border-radius: var(--r-pill);
  padding: 0.05rem 0.45rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

/* ============================================================
   Calendar
   ============================================================ */
.calendar-table {
  font-size: 0.92rem;
  overflow: visible;  /* allow sticky thead to escape rounded-corner clipping */
}
.calendar-table thead th {
  position: sticky;
  top: 56px;  /* matches site header height */
  z-index: 4;
  background: var(--surface-2);
  /* keep a bottom border visible since border-collapse: separate doesn't
     paint a top border on the next row when the thead is overlaying it */
  box-shadow: inset 0 -1px 0 var(--border);
}
.calendar-table th { font-size: 0.72rem; }
.calendar-table .week-col {
  white-space: nowrap;
  font-weight: 600;
  color: var(--text);
  background: var(--surface-2);
  width: 1%;
}
.calendar-table .week-col .muted {
  display: block;
  font-weight: 400;
  color: var(--text-muted);
  font-size: 0.7rem;
  margin-top: 0.1rem;
}
.calendar-table tbody tr:hover { background: transparent; }
.calendar-table tbody tr:hover .week-col { background: var(--brand-soft); }

.cell-dropzone {
  position: relative;
  min-width: 140px;
  min-height: 48px;
  transition: background 0.12s var(--ease), outline 0.12s var(--ease);
}
/* Empty cells: hint on hover that they're droppable */
.cell-dropzone:has(.cell-empty):hover {
  background: var(--brand-soft);
  outline: 1px dashed var(--border-strong);
  outline-offset: -3px;
  cursor: copy;
}
.cell-dropzone.drag-over {
  background: var(--warning-soft) !important;
  outline: 2px dashed var(--warning);
  outline-offset: -3px;
}
.cell-disabled {
  background: repeating-linear-gradient(135deg, var(--surface-2) 0px, var(--surface-2) 8px, var(--bg) 8px, var(--bg) 16px);
  color: var(--text-muted);
}

.cell-provider {
  font-weight: 500;
  font-size: 0.92rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.28rem 0.6rem;
  border-radius: var(--r-sm);
  background: var(--prov-color, transparent);
  border-left: 3px solid rgba(15, 23, 42, 0.18);
  color: var(--text);
  transition: box-shadow 0.15s var(--ease);
}
.cell-provider.locked {
  box-shadow: inset 0 0 0 2px var(--brand);
}
.cell-provider .lock { font-size: 0.78rem; }

.cell-empty {
  color: var(--text-muted);
  font-size: 1.1rem;
  font-weight: 300;
}

.cell-skip {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  background: repeating-linear-gradient(135deg, #f8fafc 0 6px, #e2e8f0 6px 12px);
  border: 1px dashed var(--border-strong);
  padding: 0.18rem 0.55rem;
  border-radius: var(--r-sm);
}

.cell-clear {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  background: white;
  color: var(--text-secondary);
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  box-shadow: var(--shadow-xs);
  transition: opacity 0.12s var(--ease), background 0.12s var(--ease), color 0.12s var(--ease), transform 0.1s var(--ease), border-color 0.12s var(--ease);
}
.cell-dropzone:hover .cell-clear { opacity: 1; pointer-events: auto; }
.cell-clear:hover {
  background: var(--error);
  color: white;
  border-color: var(--error);
  transform: scale(1.12);
  box-shadow: var(--shadow-sm);
}
.cell-clear:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--error-soft);
  opacity: 1;
}

.provider-swatch {
  display: inline-block;
  width: 11px;
  height: 11px;
  border-radius: 3px;
  margin-right: 0.5rem;
  vertical-align: -1px;
  border: 1px solid rgba(15, 23, 42, 0.12);
  box-shadow: var(--shadow-xs);
}

/* ============================================================
   Loading overlay (shown during solver run)
   ============================================================ */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 300;
  animation: fade-in 0.18s var(--ease);
}
.loading-overlay[hidden] { display: none; }
.loading-card {
  background: var(--surface);
  padding: 1.5rem 2rem;
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
  text-align: center;
  max-width: 90vw;
}
.loading-title {
  font-weight: 600;
  margin: 0.7rem 0 0.25rem;
  font-size: 1rem;
}
.spinner {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 3px solid var(--border);
  border-top-color: var(--brand);
  margin: 0 auto;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }

/* ============================================================
   Solver status banner
   ============================================================ */
.solver-status {
  padding: 0.7rem 1rem;
  border-radius: var(--r-md);
  margin: 0.5rem 0 1.25rem;
  font-size: 0.88rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem;
  font-variant-numeric: tabular-nums;
}
.solver-status strong {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.solver-status strong::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 3px currentColor;
  opacity: 0.25;
}
.solver-status.status-optimal { background: var(--success-soft); color: var(--success-ink); border-color: #86efac; }
.solver-status.status-feasible { background: var(--info-soft); color: var(--info-ink); border-color: #93c5fd; }
.solver-status.status-infeasible,
.solver-status.status-unknown { background: var(--error-soft); color: var(--error-ink); border-color: #fca5a5; }
.solver-status .muted { color: inherit; opacity: 0.75; font-size: 0.82rem; font-weight: 500; }
.solver-status-details { margin-left: auto; font-size: 0.82rem; }
.solver-status-details summary {
  cursor: pointer;
  color: inherit;
  opacity: 0.7;
  list-style: none;
  user-select: none;
}
.solver-status-details summary::-webkit-details-marker { display: none; }
.solver-status-details[open] summary { opacity: 1; }
.solver-status-details summary::after { content: " ▾"; font-size: 0.7em; }
.solver-status-details[open] summary::after { content: " ▴"; }
.solver-status-meta { display: block; margin-top: 0.4rem; font-size: 0.78rem; opacity: 0.85; }

/* ============================================================
   Targets / breakdown tables
   ============================================================ */
.targets-table th { vertical-align: bottom; }
.targets-table th,
.targets-table td { text-align: center; }
.targets-table td:first-child {
  text-align: left;
  font-weight: 500;
  white-space: nowrap;
}
.targets-table th.group-label {
  text-align: center;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--text);
  padding-bottom: 0.4rem;
}
/* Subtle vertical separator between groups */
.targets-table .group-start { border-left: 1px solid var(--border); }

.targets-table .diff,
.breakdown-table .diff {
  font-variant-numeric: tabular-nums;
}
/* Default (zero diff): muted, recedes so non-zero values stand out */
.targets-table .diff,
.breakdown-table .diff {
  color: var(--text-muted);
  font-weight: 400;
}
/* Non-zero diff: pill background + bold + saturated color */
.targets-table .diff.over,
.breakdown-table .diff.over {
  color: var(--warning-ink);
  background: var(--warning-soft);
  font-weight: 600;
}
.targets-table .diff.under,
.breakdown-table .diff.under {
  color: var(--info-ink);
  background: var(--info-soft);
  font-weight: 600;
}
.breakdown-table th,
.breakdown-table td {
  font-size: 0.82rem;
  padding: 0.45rem 0.6rem;
  text-align: center;
}
.breakdown-table td:first-child {
  text-align: left;
  font-weight: 500;
  white-space: nowrap;
}

/* ============================================================
   Time-off form (provider chips)
   ============================================================ */
.time-off-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-xs);
  padding: 1.1rem 1.25rem;
  margin-bottom: 1.25rem;
}
.time-off-form .field-row {
  --form-h: 38px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  margin-bottom: 0.7rem;
}
.time-off-form .field-row:last-of-type { margin-bottom: 0; }
.time-off-form .field-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.time-off-form label {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  height: var(--form-h);
}
.time-off-form label.grow { flex: 1; min-width: 200px; }
.time-off-form input[type="text"],
.time-off-form input[type="date"] {
  height: var(--form-h);
  padding: 0 0.7rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-sm);
  font-size: 0.92rem;
  font-family: inherit;
  font-weight: 400;
  color: var(--text);
  background: var(--surface);
  text-transform: none;
  letter-spacing: 0;
  line-height: 1;
  transition: border-color 0.15s var(--ease), box-shadow 0.15s var(--ease);
}
.time-off-form input:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-ring);
}
.time-off-form label.grow input { flex: 1; }
.time-off-form button {
  height: var(--form-h);
  padding: 0 1.05rem;
  margin-left: auto;
}

.provider-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.provider-chips .chip { position: relative; cursor: pointer; }
.provider-chips .chip input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.provider-chips .chip span {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-pill);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text);
  background: var(--surface);
  transition: background 0.12s var(--ease), border-color 0.12s var(--ease), color 0.12s var(--ease);
  text-transform: none;
  letter-spacing: 0;
}
.provider-chips .chip span::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--prov-color, var(--text-muted));
  border: 1px solid rgba(15, 23, 42, 0.12);
}
.provider-chips .chip:hover span {
  background: var(--surface-hover);
  border-color: var(--text-muted);
}
.provider-chips .chip input:checked + span {
  background: var(--prov-color, var(--brand));
  border-color: rgba(15, 23, 42, 0.3);
  color: var(--text);
  box-shadow: var(--shadow-sm);
  font-weight: 600;
}
.provider-chips .chip input:checked + span::before {
  background: var(--text);
  border-color: rgba(15, 23, 42, 0.4);
}
.provider-chips .chip input:focus-visible + span {
  box-shadow: 0 0 0 3px var(--brand-ring);
}

/* ---- Calendar grid for time-off picker ---- */
.cal-hint {
  position: sticky;
  top: 56px;  /* sit just under site header when scrolling */
  z-index: 6;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  background: var(--brand);
  color: white;
  padding: 0.55rem 0.95rem;
  border-radius: var(--r-md);
  box-shadow: var(--shadow-md);
  margin: 0.5rem 0 0.6rem;
  font-size: 0.9rem;
  font-weight: 500;
  animation: fade-in 0.15s var(--ease);
}
.cal-hint[hidden] { display: none; }
.cal-hint-icon {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #fef9c3;
  box-shadow: 0 0 0 4px rgba(254, 249, 195, 0.25);
  animation: hint-pulse 1.4s ease-in-out infinite;
}
@keyframes hint-pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(254, 249, 195, 0.18); }
  50% { box-shadow: 0 0 0 7px rgba(254, 249, 195, 0.28); }
}
.cal-hint-text { flex: 1; }
.cal-hint-cancel {
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: white;
  padding: 0.25rem 0.65rem;
  border-radius: var(--r-sm);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  height: auto;
  box-shadow: none;
  transition: background 0.12s var(--ease);
}
.cal-hint-cancel:hover { background: rgba(255, 255, 255, 0.25); }

.cal-months {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin: 0.6rem 0 1rem;
}
.cal-month {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 0.75rem 0.85rem 0.85rem;
  box-shadow: var(--shadow-xs);
}
.cal-month-title {
  margin: 0 0 0.55rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.01em;
}
.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
  font-variant-numeric: tabular-nums;
}
.cal-dayname {
  text-align: center;
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.2rem 0;
}
.cal-day {
  position: relative;
  min-height: 34px;
  padding: 0.25rem 0.3rem 0.4rem;
  border-radius: 4px;
  cursor: pointer;
  user-select: none;
  font-size: 0.78rem;
  color: var(--text);
  transition: background 0.1s var(--ease);
}
.cal-day:hover { background: var(--surface-hover); }
.cal-day-out { color: transparent; cursor: default; pointer-events: none; }
.cal-day-out:hover { background: transparent; }
.cal-day-num { display: inline-block; line-height: 1; }
.cal-day-today {
  outline: 1.5px solid var(--brand);
  outline-offset: -1.5px;
  font-weight: 700;
}
.cal-day-bars {
  position: absolute;
  left: 4px;
  right: 4px;
  bottom: 3px;
  display: flex;
  gap: 1px;
  height: 4px;
}
.cal-bar {
  flex: 1;
  height: 100%;
  border-radius: 2px;
  border: 1px solid rgba(15, 23, 42, 0.15);
  transition: opacity 0.15s var(--ease), filter 0.15s var(--ease);
}
.cal-bar-dim {
  opacity: 0.28;
  filter: saturate(0.5);
}

/* selection states */
.cal-day.cal-anchor {
  background: var(--brand);
  color: white;
  font-weight: 600;
}
.cal-day.cal-in-range {
  background: var(--brand-soft);
  color: var(--brand);
  font-weight: 500;
}
.cal-day.cal-range-start,
.cal-day.cal-range-end {
  background: var(--brand);
  color: white;
  font-weight: 700;
}

/* gentle highlight when calendar selection commits to the form */
@keyframes form-pulse {
  0%, 100% { box-shadow: var(--shadow-xs); }
  50% { box-shadow: 0 0 0 4px var(--brand-ring), var(--shadow-sm); }
}
.time-off-form-armed { animation: form-pulse 1.2s var(--ease); }

/* ============================================================
   Toast
   ============================================================ */
.toast {
  position: fixed;
  bottom: 1.75rem;
  left: 50%;
  transform: translate(-50%, 8px);
  background: #0f172a;
  color: white;
  padding: 0.75rem 1.15rem;
  border-radius: var(--r-md);
  box-shadow: var(--shadow-lg);
  font-size: 0.9rem;
  font-weight: 500;
  opacity: 0;
  transition: opacity 0.18s var(--ease), transform 0.18s var(--ease);
  z-index: 200;
  max-width: 80vw;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast-action {
  display: inline-block;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #c7d2fe;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  margin-left: 0.4rem;
  border-radius: var(--r-sm);
  cursor: pointer;
  font-size: 0.85rem;
  transition: background 0.12s var(--ease), color 0.12s var(--ease);
  box-shadow: none;
  height: auto;
}
.toast-action:hover {
  background: rgba(255, 255, 255, 0.1);
  color: white;
}

/* ============================================================
   Info page (rules)
   ============================================================ */
pre.formula {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--brand);
  padding: 0.95rem 1.1rem;
  border-radius: var(--r-md);
  box-shadow: var(--shadow-xs);
  font-size: 0.88rem;
  overflow-x: auto;
  margin: 0.75rem 0;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 880px) {
  .schedule-layout { grid-template-columns: 1fr; }
  .sidebar {
    position: static;
    max-height: none;
  }
  main { padding: 0 1rem; }
  header { padding: 0.75rem 1rem; gap: 1rem; }
  header nav { gap: 0; }
  header nav a { padding: 0.4rem 0.55rem; font-size: 0.85rem; }
}

/* ============================================================
   Print
   ============================================================ */
@media print {
  header, form.inline, .actions, .sidebar, .cell-clear, .toast { display: none !important; }
  body { background: white; }
  main { margin: 0; padding: 0; }
  .schedule-layout { grid-template-columns: 1fr; }
  table { box-shadow: none; border: 1px solid #cbd5e1; }
  .solver-status { box-shadow: none; }
}