/* ---------- Fonts (vendored locally; no CDN, no network) ---------- */
@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 100 700;
  font-display: swap;
  src: url("./vendor/ibm-plex-sans-latin-ext-wght-normal.woff2") format("woff2");
  unicode-range: U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF;
}

@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 100 700;
  font-display: swap;
  src: url("./vendor/ibm-plex-sans-latin-wght-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}

/* ---------- Tokens ---------- */
:root {
  color-scheme: light dark;
  --ink: #1f2328;
  --muted: #6b7280;
  --line: #e7e7ed;
  --rule: #ededf2;
  --rule-strong: #d7d7e0;
  --paper: #fff;
  --page: #f4f4f7;
  --page-top: #e8e8ee;
  --surface-2: #f7f7fa;
  --field: #f1f1f5;
  --field-line: #dcdce4;
  --field-line-hover: #a9a9b8;
  --chevron: #9aa1ab;
  --switch-off: #cdcdd8;
  --switch-knob: #fff;
  --accent: #6d28d9;
  --accent-dark: #5b21b6;
  --accent-wash: #f4f0ff;
  --accent-line: #d9d2ee;
  --accent-ink: #4c1d95;
  --on-accent: #fff;
  --share-deduction: #f97316;
  --deduction-ink: #c2410c;
  --warn: #8a5300;
  --error: #d92b4b;
  --error-wash: #fdeef1;
  --focus: #6d28d9;
  --shadow: rgba(16, 24, 40, 0.08);
  --select-arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5l5-5' fill='none' stroke='%236b7280' stroke-width='1.8' stroke-linecap='round'/%3E%3C/svg%3E");
  --radius: 12px;
  font-family: "IBM Plex Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink);
}

/* The brand bar keeps its gradient in both themes; everything else re-tokens. */
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e8e8ed;
    --muted: #9aa0ab;
    --line: #2c2c34;
    --rule: #2a2a32;
    --rule-strong: #3d3d48;
    --paper: #17171c;
    --page: #0f0f13;
    --page-top: #17171d;
    --surface-2: #1e1e25;
    --field: #22222a;
    --field-line: #34343e;
    --field-line-hover: #5a5a68;
    --chevron: #7c7c8a;
    --switch-off: #3c3c48;
    --switch-knob: #e8e8ed;
    --accent: #a78bfa;
    --accent-dark: #b9a3fb;
    --accent-wash: #25203a;
    --accent-line: #3e3660;
    --accent-ink: #dcd2fc;
    --on-accent: #1a1030;
    --share-deduction: #fb923c;
    --deduction-ink: #fdba74;
    --warn: #e2a63c;
    --error: #ff6b81;
    --error-wash: #34202a;
    --focus: #a78bfa;
    --shadow: rgba(0, 0, 0, 0.5);
    --select-arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5l5-5' fill='none' stroke='%239aa0ab' stroke-width='1.8' stroke-linecap='round'/%3E%3C/svg%3E");
  }
  .card { box-shadow: none; }
}

/* ---------- Base ----------
   Mobile first: the rules below are the phone layout; the min-width blocks
   at the end only widen it. --pad is the card's inner gutter at each size. */
* { box-sizing: border-box; }
[hidden], [v-cloak] { display: none !important; }
/* Vue strips v-cloak once it mounts, which hides the static fallback message. */
#app:not([v-cloak]) + .boot-message { display: none; }
:root { --pad: 16px; }
body { margin: 0; background: linear-gradient(180deg, var(--page-top) 0, var(--page) 160px) no-repeat var(--page); }
h1, h2, h3, p { margin: 0; }
h1 { font-size: 18px; font-weight: 700; line-height: 1.3; letter-spacing: -0.2px; }
h2 { font-size: 16px; font-weight: 600; }
h3 { font-size: 14px; font-weight: 600; }
.muted, .hint { color: var(--muted); }
.hint { display: block; margin-top: 4px; font-size: 12px; font-weight: 400; }
.required { color: var(--error); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; }

/* ---------- App bar ---------- */
.app-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px 20px;
  flex-wrap: wrap;
  padding: 10px 16px;
  background: linear-gradient(90deg, #3b2a8c 0%, #6a2597 26%, #a81f76 52%, #c9184a 72%, #cf6b0f 100%);
  color: #fff;
  box-shadow: 0 2px 12px rgba(16, 24, 40, 0.18);
}
.brand { font-size: 20px; font-weight: 700; letter-spacing: -0.3px; color: #fff; text-decoration: none; }
.brand-accent { color: #ff3b5c; }
.app-nav { display: flex; align-items: center; gap: 18px; }
.app-nav a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  opacity: 0.92;
}
.app-nav a:hover, .app-nav .current { opacity: 1; }

/* ---------- Page and card ---------- */
.page { max-width: 1080px; margin: 0 auto; padding: 16px 12px 24px; }
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.04);
}
.card-header { padding: 14px var(--pad); border-bottom: 1px solid var(--rule); }
.card-subtitle { margin-top: 2px; color: var(--muted); font-size: 13px; }
.progress { position: relative; height: 3px; margin-top: -1px; overflow: hidden; background: var(--accent-wash); }
.progress span {
  position: absolute;
  inset: 0;
  width: 40%;
  border-radius: 999px;
  background: var(--accent);
  animation: progress-sweep 1.1s ease-in-out infinite;
}
@keyframes progress-sweep {
  from { transform: translateX(-100%); }
  to { transform: translateX(250%); }
}
.feedback:not(:empty) { padding: 0 var(--pad); }
.feedback:has(.notice) { padding-top: 12px; }
.feedback button { margin-top: 8px; }
.notice { padding: 10px 12px; border: 1px solid var(--error); border-left-width: 3px; border-radius: 8px; overflow-wrap: anywhere; }
.error { color: var(--error); background: var(--error-wash); }
.boot-message { padding: var(--pad); }
noscript .notice { margin: var(--pad); }
footer { margin: 12px 4px 0; color: var(--muted); font-size: 12px; }

/* ---------- Calculation guide ---------- */
.guide { margin-top: 20px; overflow-wrap: anywhere; border: 0; border-radius: 0; background: transparent; box-shadow: none; scroll-margin-top: 16px; }
.guide-disclosure { border-top: 1px solid var(--rule); }
.guide-disclosure > summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 68px; padding: 18px 8px; cursor: pointer; }
.guide-disclosure > summary > span:first-child { min-width: 0; }
.guide-disclosure > summary:hover h2, .guide-disclosure[open] > summary h2 { color: var(--accent); }
.guide-eyebrow { color: var(--muted); font-size: 10px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; }
.guide-disclosure h2 { margin-top: 2px; font-size: 15px; font-weight: 600; }
.guide-summary { display: block; margin-top: 2px; color: var(--muted); font-size: 12px; }
.guide-disclosure > summary .chevron { margin-right: 4px; }
.guide-content { border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); overflow: hidden; }
.guide-intro { padding: var(--pad); border-bottom: 1px solid var(--rule); color: var(--muted); }
.guide-overview { display: grid; gap: 24px; padding: var(--pad); }
.guide-overview > * { min-width: 0; }
.guide-rates h3 { font-size: 16px; }
.guide-rates > p { margin-top: 8px; color: var(--muted); }
.guide-rates dl { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin: 24px 0 0; }
.guide-rates dl > div { padding-top: 12px; border-top: 1px solid var(--rule-strong); }
.guide-rates dt { color: var(--muted); font-size: 12px; }
.guide-rates dd { margin: 6px 0 0; }
.guide-rates dd strong { display: block; font-size: 20px; font-weight: 600; letter-spacing: -0.4px; }
.guide-rates dd span { display: block; margin-top: 6px; color: var(--muted); font-size: 12px; }
.guide-example { padding: 20px; border: 1px solid var(--line); border-radius: var(--radius); background: transparent; scroll-margin-top: 16px; }
.guide-example h3 { margin-top: 6px; font-size: 15px; }
.example-net { display: grid; gap: 2px; margin-top: 18px; color: var(--accent-ink); }
.example-net strong { font-size: clamp(32px, 5vw, 40px); font-weight: 600; letter-spacing: -1px; line-height: 1.15; font-variant-numeric: tabular-nums; }
.example-net strong span { font-size: 20px; letter-spacing: 0; }
.example-net > span { font-size: 13px; }
.example-breakdown { margin: 20px 0 0; font-size: 13px; }
.example-breakdown > div { display: flex; justify-content: space-between; gap: 12px; padding: 4px 0; }
.example-breakdown dd { margin: 0; flex-shrink: 0; font-variant-numeric: tabular-nums; }
.example-breakdown .example-annual { margin-top: 8px; padding-top: 12px; border-top: 1px solid var(--accent-line); font-weight: 600; }
.example-assumptions { margin-top: 14px; color: var(--muted); font-size: 12px; }
.guide-details { padding: 0 var(--pad) 8px; }
.guide-details details { border-top: 1px solid var(--rule); scroll-margin-top: 16px; }
.guide-details summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 56px; padding: 16px 0; cursor: pointer; }
.guide-details summary h3 { font-size: 14px; font-weight: 500; }
.guide-details summary:hover h3, .guide-details details[open] summary h3 { color: var(--accent); }
.guide-details .chevron { margin-right: 4px; }
.guide-answer { max-width: 78ch; padding-bottom: 20px; line-height: 1.65; }
.guide-answer p + p, .guide-answer ul { margin-top: 10px; }
.guide-answer ul { margin-bottom: 0; padding-left: 20px; }
.guide-answer li + li { margin-top: 8px; }
.guide a { color: var(--accent); text-underline-offset: 3px; }
.guide a:hover { color: var(--accent-dark); }

/* ---------- AKUP salary explorer ---------- */
.akup-intro { padding: var(--pad); }
.akup-year { max-width: 160px; margin-bottom: 12px; }
.akup-chart { padding: var(--pad); border-top: 1px solid var(--rule); }
.akup-controls { margin-top: 20px; }
.akup-controls label { display: block; }
.akup-controls input[type="range"] { display: block; width: 100%; min-height: 44px; margin: 8px 0; accent-color: var(--accent); cursor: pointer; }
.akup-selection { padding: 12px; border: 1px solid var(--accent-line); border-radius: 8px; background: var(--accent-wash); color: var(--accent-ink); font-variant-numeric: tabular-nums; }
.akup-plot { display: block; width: 100%; height: auto; margin-top: 20px; overflow: visible; }
.akup-plot text { fill: var(--muted); font: 13px "IBM Plex Sans", sans-serif; }
.akup-grid { stroke: var(--rule-strong); }
.akup-curve { stroke: var(--accent); stroke-width: 3; fill: none; }
.akup-marker { stroke: var(--ink); stroke-dasharray: 4 4; }
.akup-dot { fill: var(--accent); stroke: var(--paper); stroke-width: 2; }
.akup-data { margin-top: 16px; }
.akup-data summary { padding: 10px 0; cursor: pointer; color: var(--accent); }
.akup-data table { width: 100%; min-width: 0; margin-top: 8px; font-variant-numeric: tabular-nums; }
.akup-data th, .akup-data td { padding: 8px; white-space: normal; }

/* ---------- Form layout ----------
   One column on phones. DOM order is settings, summary, ledger, action bar;
   the bar comes last so it can stick to the bottom for the whole form. */
.form-shell { display: grid; grid-template-columns: minmax(0, 1fr); border: 0; margin: 0; padding: 0; min-width: 0; }
.settings, .summary, .ledger { min-width: 0; padding: var(--pad); }
.summary, .ledger { border-top: 1px solid var(--rule); }

.action-bar {
  position: sticky;
  bottom: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px var(--pad);
  padding-bottom: calc(10px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--line);
  border-radius: 0 0 var(--radius) var(--radius);
  background: var(--paper);
  box-shadow: 0 -8px 20px -8px var(--shadow);
}
.bar-figure { display: grid; min-width: 0; font-variant-numeric: tabular-nums; }
.bar-label { color: var(--muted); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bar-value { font-size: 20px; font-weight: 600; letter-spacing: -0.3px; line-height: 1.2; }
.action-bar.stale .bar-label { color: var(--warn); font-weight: 600; }
.action-bar.stale .bar-value { opacity: 0.55; }
.action-bar button { flex-shrink: 0; }

/* ---------- Filled fields ---------- */
/* Year and gross share a row even on phones. */
.primary-inputs { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 10px; }
.field {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  padding: 6px 12px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: var(--field);
  cursor: text;
}
.field-label { display: block; font-size: 12px; font-weight: 400; color: var(--muted); }
.field-row { display: flex; align-items: center; gap: 8px; }
.field-suffix { color: var(--muted); font-size: 14px; }
.field input, .field select {
  width: 100%;
  min-width: 0;
  min-height: 28px;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 16px;
}
.field select {
  appearance: none;
  padding-right: 20px;
  background-image: var(--select-arrow);
  background-repeat: no-repeat;
  background-position: right center;
  background-size: 12px;
  cursor: pointer;
}
.field input:focus, .field select:focus { outline: 0; }
.field:has(select) { cursor: pointer; }
.field:focus-within { border-color: var(--accent); background: var(--paper); box-shadow: 0 0 0 3px var(--accent-wash); }
.field:has([aria-invalid="true"]) { border-color: var(--error); background: var(--error-wash); }
.field:has([aria-invalid="true"]):focus-within { box-shadow: 0 0 0 3px var(--error-wash); }
/* An advanced parameter that differs from the year's preset. */
.field.changed { border-color: var(--accent-line); }
.field.changed .field-label { color: var(--accent); }
#gross { font-size: 20px; font-weight: 500; }
input[inputmode="decimal"] { font-variant-numeric: tabular-nums; }
.field-group { min-width: 0; }
.input-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 10px; border: 0; padding: 0; min-width: 0; }
#ppk-fields { grid-template-columns: repeat(2, minmax(0, 1fr)); }
#ppk-fields .hint { grid-column: 1 / -1; margin-top: 0; }

/* ---------- Buttons ---------- */
button {
  min-height: 44px;
  padding: 10px 24px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--accent);
  color: var(--on-accent);
  font: inherit;
  font-size: 15px;
  font-weight: 600;
  box-shadow: 0 1px 2px rgba(109, 40, 217, 0.25);
  cursor: pointer;
}
button.secondary, button:disabled { box-shadow: none; }
button:hover:not(:disabled) { background: var(--accent-dark); border-color: var(--accent-dark); }
button.secondary { min-height: 36px; padding: 6px 14px; background: var(--paper); color: var(--accent); border-color: var(--accent-line); font-size: 13px; font-weight: 500; }
button.secondary:hover:not(:disabled) { background: var(--accent-wash); border-color: var(--accent); }
button.secondary[aria-pressed="true"] { background: var(--accent-wash); border-color: var(--accent); color: var(--accent-ink); }
button:disabled { opacity: 0.55; cursor: wait; }

/* ---------- Settings list ----------
   Every option is a row: title and note on the left, the control on the
   right. PPK and the disclosures open a body below their row. */
.option-list { margin-top: 14px; border-top: 1px solid var(--rule); }
.option { border: 0; padding: 0; margin: 0; min-width: 0; border-bottom: 1px solid var(--rule); }
.option:last-child { border-bottom: 0; }
.option-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
  min-height: 56px;
  padding: 10px 0;
  cursor: pointer;
}
.option-text { display: grid; gap: 1px; min-width: 0; }
.option-title { font-size: 15px; font-weight: 500; }
.option-note { color: var(--muted); font-size: 13px; overflow-wrap: anywhere; }
.option-body { padding: 0 0 14px; }
.option-body-heading { display: flex; align-items: center; justify-content: space-between; gap: 8px 16px; flex-wrap: wrap; margin-bottom: 10px; }
.option-body-heading .hint { margin: 0; }
.badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 999px;
  background: var(--accent-wash);
  color: var(--accent-ink);
  font-size: 12px;
  font-weight: 500;
}
.param-group { border: 0; padding: 0; margin: 0; min-width: 0; }
.param-group + .param-group { margin-top: 14px; }
.param-group > legend { padding: 0; margin-bottom: 6px; color: var(--muted); font-size: 11px; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; }

/* PPK switch */
.switch { position: relative; }
.switch input { position: absolute; right: 0; top: 50%; width: 44px; height: 24px; margin: -12px 0 0; opacity: 0; cursor: pointer; }
.switch-track {
  position: relative;
  flex-shrink: 0;
  width: 44px;
  height: 24px;
  border-radius: 999px;
  background: var(--switch-off);
  transition: background 0.15s ease;
}
.switch-track::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--switch-knob);
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.3);
  transition: transform 0.15s ease;
}
.switch input:checked ~ .switch-track { background: var(--accent); }
.switch input:checked ~ .switch-track::after { transform: translateX(20px); }
.switch input:focus-visible ~ .switch-track { outline: 2px solid var(--focus); outline-offset: 3px; }

/* Cost of earning income: a two-way segmented control. */
.costs .option-row { cursor: default; }
.segmented { display: inline-grid; grid-auto-flow: column; grid-auto-columns: 1fr; flex-shrink: 0; padding: 3px; border-radius: 999px; background: var(--field); }
.segment {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  padding: 0 14px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}
.segment input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; }
.segment:hover { color: var(--accent); }
.segment:has(input:checked) { background: var(--paper); color: var(--accent); box-shadow: 0 0 0 1px var(--accent-line), 0 1px 2px rgba(16, 24, 40, 0.12); }
.segment:has(input:focus-visible) { outline: 2px solid var(--focus); outline-offset: 2px; }
.costs[aria-invalid="true"] .segmented { box-shadow: 0 0 0 1px var(--error); }

/* Disclosure rows */
summary { list-style: none; }
summary::-webkit-details-marker { display: none; }
summary:hover .option-title { color: var(--accent); }
.chevron {
  flex-shrink: 0;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--chevron);
  border-bottom: 2px solid var(--chevron);
  transform: translateY(-3px) rotate(45deg);
  transition: transform 0.15s ease;
}
details[open] > summary .chevron { transform: translateY(2px) rotate(-135deg); }

/* ---------- Summary ---------- */
.section-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 6px 16px; flex-wrap: wrap; }
#result-state { color: var(--muted); font-size: 12px; }
.stale #result-state { color: var(--warn); font-weight: 600; }
.stale .hero dd, .stale .annual-totals dd, .stale .share, .stale tbody td:not(:nth-child(2)), .stale tfoot { opacity: 0.45; }
#result-note { margin-top: 2px; font-size: 12px; }
:where(.summary) dl { min-width: 0; margin: 0; font-variant-numeric: tabular-nums; }
.summary dt { color: var(--muted); font-size: 11px; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; }
.summary dd { margin: 0; font-size: 16px; font-weight: 500; overflow-wrap: anywhere; }
.hero { margin-top: 12px; padding: 14px 16px; border-radius: 10px; background: var(--accent-wash); }
.hero dd {
  margin-top: 2px;
  color: var(--accent);
  font-size: clamp(28px, 8vw, 38px);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -1px;
}
.share { margin-top: 12px; }
.share-bar { height: 8px; overflow: hidden; border-radius: 999px; background: var(--share-deduction); }
.share-net { display: block; height: 100%; border-radius: inherit; background: var(--accent); }
.share-legend { display: flex; flex-wrap: wrap; gap: 4px 16px; margin-top: 6px; color: var(--muted); font-size: 12px; }
.share-tag::before { content: ""; display: inline-block; width: 8px; height: 8px; margin-right: 6px; border-radius: 50%; }
.share-tag.net::before { background: var(--accent); }
.share-tag.deduction::before { background: var(--share-deduction); }
.share-tag.deduction, .annual-totals .deduction dt, .annual-totals .deduction dd { color: var(--deduction-ink); }
.annual-totals { margin-top: 10px; }
.annual-totals > div { display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: baseline; padding: 6px 0; }
.annual-totals > div + div { border-top: 1px solid var(--rule); }
.annual-totals dd { text-align: right; }

/* ---------- Monthly ledger ---------- */
.ledger .section-heading { align-items: flex-start; }
.ledger-submit { display: none; flex-shrink: 0; }   /* phones use the sticky bar */
.ledger-tools { display: flex; align-items: center; justify-content: space-between; gap: 6px 16px; flex-wrap: wrap; margin: 10px 0 8px; }
.breakdown-toggle { min-height: 32px; }
.scroll-hint { display: none; margin: 0; }
.ledger.expanded .scroll-hint { display: block; }
.table-scroll { width: 100%; overflow-x: auto; }
.table-scroll:focus-visible { outline-offset: -2px; }
table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 13px; font-variant-numeric: tabular-nums; }
/* Breakdown columns stay hidden on phones until toggled; the table then
   grows past the viewport and scrolls inside .table-scroll. */
.ledger .detail { display: none; }
.ledger.expanded .detail { display: table-cell; }
.ledger.expanded table { min-width: 600px; }
#table-notes { margin-top: 8px; }
th, td { padding: 4px 8px; text-align: right; white-space: nowrap; border-bottom: 1px solid var(--rule); }
.th-note { font-weight: 400; color: var(--muted); }
/* The month label stays readable while the rest of the row scrolls sideways. */
th:first-child { position: sticky; left: 0; z-index: 1; text-align: left; background: var(--paper); border-right: 1px solid var(--rule); }
thead th {
  padding-top: 7px;
  padding-bottom: 7px;
  background: var(--surface-2);
  border-top: 1px solid var(--rule);
  font-size: 12px;
  font-weight: 500;
}
thead th:first-child { background: var(--surface-2); }
tbody th { font-weight: 400; }
/* A heavier rule every third row marks the quarters. */
tbody tr:nth-child(3n):not(:last-child) > * { border-bottom-color: var(--rule-strong); }
tbody tr:hover > * { background: var(--surface-2); }
/* Third column is Netto, the figure people came for. */
tbody td:nth-child(3) { background: var(--accent-wash); color: var(--accent-ink); font-weight: 600; }
/* 16px on phones so iOS doesn't zoom the page when a cell is focused. */
table input[inputmode="decimal"] {
  width: 100%;
  min-width: 96px;
  min-height: 36px;
  margin: 0;
  padding: 4px 8px;
  border: 1px solid var(--field-line);
  border-radius: 6px;
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-size: 16px;
  text-align: right;
}
table input:hover { border-color: var(--field-line-hover); }
table input[aria-invalid="true"] { border-color: var(--error); background: var(--error-wash); }
tfoot { font-weight: 600; }
tfoot td, tfoot th { padding-top: 8px; padding-bottom: 6px; border-top: 1px solid var(--ink); border-bottom: 0; }

/* ---------- Accessibility helpers ---------- */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.skip-link { position: absolute; left: 12px; top: 4px; transform: translateY(-200%); padding: 6px; background: var(--paper); color: var(--focus); z-index: 3; }
.skip-link:focus { transform: none; }

/* ---------- Wider screens ---------- */
@media (min-width: 640px) {
  :root { --pad: 20px; }
  h1 { font-size: 20px; }
  .app-nav { gap: 24px; }
  .page { padding: 24px 16px 32px; }
  .primary-inputs { grid-template-columns: 120px minmax(0, 1fr); gap: 12px; }
  .input-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero { display: grid; grid-template-columns: auto minmax(0, 1fr); grid-template-areas: "label label" "value share"; align-items: end; gap: 0 24px; }
  .hero dt { grid-area: label; }
  .hero dd { grid-area: value; }
  .hero .share { grid-area: share; margin-top: 0; padding-bottom: 6px; }
  .annual-totals { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
  .annual-totals > div { display: block; padding: 0; }
  .annual-totals > div + div { border-top: 0; border-left: 1px solid var(--rule); padding-left: 16px; }
  .annual-totals dd { text-align: left; }
  /* Every column fits at this width, so the breakdown is always on. */
  .ledger .detail { display: table-cell; }
  .ledger-tools { display: none; }
  .ledger-submit { display: inline-block; }
  .ledger .section-heading { align-items: center; }
  table { min-width: 600px; }
  /* Shrink the editable column to its input so the amounts share the rest. */
  tbody td:nth-child(2), tfoot td:nth-child(2) { width: 1%; }
  table input[inputmode="decimal"] { width: 132px; min-height: 30px; font-size: 13px; }
}

/* Settings on the left, the summary beside them, the ledger under both.
   The action bar leaves the viewport edge and sits under the settings. */
@media (min-width: 900px) {
  :root { --pad: 24px; }
  .guide-overview { grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); align-items: start; gap: 40px; padding: 32px; }
  .guide-example { padding: 24px; }
  .guide-details { padding: 0 32px 12px; }
  .app-bar { padding: 10px 32px; }
  .page { padding: 32px 20px 40px; }
  .form-shell {
    grid-template-columns: minmax(0, 420px) minmax(0, 1fr);
    grid-template-areas:
      "settings summary"
      "action   summary"
      "ledger   ledger";
  }
  .settings { grid-area: settings; padding-bottom: 8px; }
  .settings, .action-bar { border-right: 1px solid var(--rule); }
  .action-bar {
    grid-area: action;
    position: static;
    padding: 12px var(--pad) var(--pad);
    border-top: 0;
    border-radius: 0;
    box-shadow: none;
  }
  .bar-figure { display: none; }
  .action-bar button { width: 100%; }
  .summary { grid-area: summary; align-self: start; border-top: 0; }
  #result-note { margin-top: 6px; }
  .hero {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: "label" "value" "share";
    gap: 12px;
    margin-top: 24px;
    padding: 28px;
  }
  .hero dd { font-size: 40px; }
  .hero .share { margin-top: 8px; padding-bottom: 0; }
  .share-legend { margin-top: 10px; }
  .annual-totals { margin-top: 24px; }
  .annual-totals > div { padding-top: 8px; padding-bottom: 8px; }
  .annual-totals dd { margin-top: 8px; }
  .ledger { grid-area: ledger; }
  .input-grid { grid-template-columns: minmax(0, 1fr); }
  #ppk-fields, .param-group .input-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (forced-colors: active) {
  .akup-curve, .akup-marker, .akup-grid { stroke: CanvasText; }
  .akup-dot { fill: CanvasText; }
  .akup-plot text { fill: CanvasText; }
  tbody td:nth-child(3) { color: CanvasText; }
  .switch-track { border: 1px solid CanvasText; }
  .segment:has(input:checked) { outline: 2px solid CanvasText; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .progress span { width: 100%; }
}