:root {

  --btn-bg: #f9fafb;
  --btn-text: var(--text);
  --btn-hover: #f3f4f6;
  --chip-bg: #fff;
  --danger-bg: #fee2e2;
  --danger-border: #fecaca;
  --accent-weak: #dbeafe;
  --bg: #f6f7f9;
  --card: #fff;
  --border: #e5e7eb;
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #2563eb;
  --danger: #991b1b;
}

* { box-sizing: border-box; }

html, body {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto;
  background: var(--bg);
  color: var(--text);
}

.container {
  max-width: 1500px;
  margin: auto;
  padding: 20px;
  width: 100%;
}

.layout {
  display: grid;
  grid-template-columns: 600px 1fr;
  gap: 20px;
  width: 100%;
  max-width: 100%;
}

/* CRITICAL: allow grid children to shrink */
.layout > * {
  min-width: 0;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  max-width: 100%;
  overflow: hidden; /* prevents internal overflow from widening layout */
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.header-actions { display: flex; gap: 8px; }

.chart-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 10px 0 12px;
  align-items: flex-end;
}

label {
  font-size: 12px;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hidden { display: none !important; }

.offer-card {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px;
  margin-bottom: 16px;
  max-width: 100%;
  overflow-x: hidden;
}

.section {
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px dashed var(--border);
  max-width: 100%;
  overflow-x: hidden;
}

/* Let grid children shrink (important for overflow bugs) */
.grid, .row3, .row4 {
  max-width: 100%;
}

.grid > *, .row3 > *, .row4 > * {
  min-width: 0;
}

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 150px;
  gap: 6px;
  font-size: 12px;
}

.row3 {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 150px 34px;
  gap: 6px;
  align-items: center;
}

/* Expenses: single-line row (name, amount, freq, pre/post, delete) */
.expense-header {
  display: grid;
  grid-template-columns: 1.5fr 0.8fr 0.8fr 0.8fr 40px;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
  margin: 6px 0 6px;
  padding: 0 2px;
}

.expense-row {
  display: grid;
  grid-template-columns: 1.5fr 0.8fr 0.8fr 0.8fr 40px;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
}

.expense-row select,
.expense-row input {
  width: 100%;
}

.expense-row .icon-btn {
  justify-self: end;
}

/* Other taxes row: clamp widths + keep the X inside */
.row4 {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 160px) minmax(0, 90px) 36px;
  gap: 6px;
  align-items: center;
  width: 100%;
  max-width: 100%;
}

input, select {
  padding: 6px;
  font-size: 13px;
  border: 1px solid var(--border);
  border-radius: 4px;
  width: 100%;
  min-width: 0;
  max-width: 100%;
}

/* Multi-select was forcing overflow before */
select[multiple] { min-width: 0; width: 100%; }

button {
  padding: 6px 10px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--btn-bg);
  cursor: pointer;
}

.btn.primary {
  background: var(--accent);
  color: white;
  border-color: transparent;
}

.remove-btn {
  background: var(--danger-bg);
  border-color: var(--danger-border);
  color: var(--danger);
  margin-top: 8px;
}

.icon-btn {
  width: 36px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--danger);
  background: var(--chip-bg);
  border: 1px solid #fecaca;
  border-radius: 6px;
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  justify-self: end;
}

.chart-container {
  height: 420px;
  margin-bottom: 12px;
}

canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Bottom note */
.bottom-note { padding-top: 0; }

.info-box {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  background: var(--card);
}

.info-box summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text);
}

.info-content {
  margin-top: 10px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.45;
}

.info-content code {
  background: var(--chip-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 6px;
  color: var(--text);
}

.info-content ul { margin: 6px 0 0 18px; }

.info-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  margin-top: 8px;
  background: var(--chip-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.info-table th, .info-table td {
  padding: 8px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

.info-table th {
  color: var(--muted);
  background: var(--btn-bg);
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--chip-bg);
  color: var(--text);
  font-size: 11px;
}

.badge.ok { border-color: #bbf7d0; background: #f0fdf4; }
.badge.warn { border-color: var(--danger-border); background: #fef2f2; color: #991b1b; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

/* Subtractive (negative) numbers in the results table */
td.subtractive {
  color: var(--danger);
  font-weight: 600;
}


th, td {
  padding: 8px;
  border-bottom: 1px solid var(--border);
}

th { color: var(--muted); text-align: left; }

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .row4 { grid-template-columns: 1fr 1fr; }
  .icon-btn { justify-self: end; }
}



/* ===== Theme (system + toggle) ===== */
:root {
  color-scheme: light;
  accent-color: var(--accent);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --bg: #0b1220;
    --card: #0f172a;
    --border: #243041;
    --text: #e5e7eb;
    --muted: #a8b1c2;
    --btn-bg: #111c33;
    --btn-hover: #162241;
    --chip-bg: #0b162d;
    --danger-bg: rgba(239,68,68,0.16);
    --danger-border: rgba(239,68,68,0.35);
    --accent-weak: rgba(37,99,235,0.22);
    color-scheme: dark;
  }
}

:root[data-theme="light"]{
  --bg: #f6f7f9;
  --card: #fff;
  --border: #e5e7eb;
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #2563eb;
  --danger: #991b1b;

  --btn-bg: #f9fafb;
  --btn-hover: #f3f4f6;
  --chip-bg: #fff;
  --danger-bg: #fee2e2;
  --danger-border: #fecaca;
  --accent-weak: #dbeafe;
  color-scheme: light;
}

:root[data-theme="dark"]{
  --bg: #0b1220;
  --card: #0f172a;
  --border: #243041;
  --text: #e5e7eb;
  --muted: #a8b1c2;
  --accent: #4f8cff;
  --danger: #f87171;

  --btn-bg: #111c33;
  --btn-hover: #162241;
  --chip-bg: #0b162d;
  --danger-bg: rgba(239,68,68,0.16);
  --danger-border: rgba(239,68,68,0.35);
  --accent-weak: rgba(79,140,255,0.22);
  color-scheme: dark;
}

/* button hover */
button:hover { background: var(--btn-hover); }
.btn.primary:hover { filter: brightness(1.05); }

/* multi-select highlight */
select[multiple] option { background: var(--card); color: var(--text); }
select[multiple] option:checked { background: var(--accent); color: #fff; }
select[multiple]:focus { outline: 2px solid var(--accent-weak); outline-offset: 2px; }

/* table headers */
table thead th { background: var(--accent-weak); color: var(--text); }

/* info-box subtables if present */
.info-content table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.info-content th, .info-content td { border: 1px solid var(--border); padding: 6px 8px; }
.info-content th { background: var(--accent-weak); color: var(--text); }
.info-content td { background: transparent; color: var(--text); }

/* theme toggle button */
.theme-toggle{
  position: fixed;
  top: 12px;
  right: 12px;
  z-index: 9999;
  border-radius: 999px;
  width: 42px;
  height: 42px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  background: var(--btn-bg);
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: 0 6px 20px rgba(0,0,0,0.18);
}


/* Offers header actions (keeps desktop layout unchanged, wraps on small screens) */
.offers-head-actions{
  display:flex;
  gap:10px;
  align-items:center;
  justify-content:flex-end;
  flex-wrap:wrap;
  font-size:12px;
  color: var(--muted);
}
.tax-year-inline{
  display:flex;
  align-items:center;
  gap:6px;
}
.offers-io{
  display:flex;
  gap:8px;
  align-items:center;
  flex-wrap:wrap;
}