/* HK Interest Calc: one stylesheet for every tab. Each rule appears once, grouped by what it styles:
   tokens, page, header and tabs, cards, form fields, segmented controls, buttons, help, cash flow rows, results
   (tiles, tables, stale note), each tab's own bits, animations, phones, print. */

/* ---- Tokens: light, then dark ---- */

:root {
  --bg: #f7f7f5;
  --surface: #ffffff;
  --text: #1c1c1a;
  --muted: #6b6b66;
  --border: #deded8;
  --accent: #1f5f8b;
  --accent-text: #ffffff;
  --warn-bg: #fff4d6;
  --warn-text: #6b4b00;
  --error: #b3261e;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(20, 30, 40, .05), 0 6px 20px rgba(20, 30, 40, .06);
  --accent-soft: color-mix(in srgb, var(--accent) 12%, transparent);
  --ring: 0 0 0 3px color-mix(in srgb, var(--accent) 30%, transparent);
  --ctl-border: color-mix(in srgb, var(--border) 65%, var(--text)); /* segmented controls: a stronger edge */
  --ctl-text: color-mix(in srgb, var(--muted) 55%, var(--text)); /* their options not chosen */
  --chosen: color-mix(in srgb, var(--accent) 24%, var(--surface)); /* the chosen option */
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161615;
    --surface: #20201e;
    --text: #ececea;
    --muted: #a0a09a;
    --border: #3a3a36;
    --accent: #6fb1e0;
    --accent-text: #0f1b24;
    --warn-bg: #3a300f;
    --warn-text: #f2d98a;
    --error: #f2847c;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
  }
}

/* ---- Page ---- */

* { box-sizing: border-box; }
/* No double-tap to zoom (taps on buttons and segments act at once); pinch to zoom still works */
html { touch-action: manipulation; }
[hidden] { display: none !important; } /* the hidden attribute always wins over layout rules */
body {
  margin: 0;
  background: radial-gradient(1200px 400px at 50% -120px, var(--accent-soft), transparent 70%), var(--bg);
  background-repeat: no-repeat;
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}
main { max-width: 1040px; margin: 0 auto; padding: 32px 16px 64px; }
h1 { display: flex; align-items: center; gap: 10px; margin: 0 0 8px; font-size: 1.75rem; letter-spacing: -0.02em; }
h1 .logo { flex: none; width: 36px; height: 36px; }
a { color: var(--accent); }
.muted { color: var(--muted); font-size: 0.9rem; font-weight: normal; }
.tagline { margin: 0 0 4px; max-width: 70ch; font-size: 0.95rem; color: var(--muted); }
.print-only { display: none; }

/* ---- Rates strip: at the top of the open tab's panel (tabs.js moves it there), showing only the rates that tab uses:
   Interest (judgment, HSBC and US prime), Mortgage (HSBC prime, HIBOR), Inflation (HK inflation); PV uses none.
   It reads as the top of the panel's first card: same surface and border, attached to the tab bar. ---- */

.header-rates {
  display: flow-root; background: var(--surface); border: 1px solid var(--border); border-bottom: 0;
  border-radius: var(--radius) var(--radius) 0 0; padding: 14px 20px 0; box-shadow: var(--shadow);
}
.header-rates:not([data-tab="pv"]) + .card { margin-top: 0; border-top: 0; border-radius: 0 0 var(--radius) var(--radius); }
.header-rates[data-tab="pv"] { display: none; }
/* The first tab (Interest) sits right above the card's top-left corner: that corner is square, so the selected tab joins
   the card. Under any other tab the corner stays rounded */
.header-rates[data-tab="interest"] { border-top-left-radius: 0; }
.header-rates[data-tab="interest"] .latest-rate[data-tabs]:not([data-tabs~="interest"]),
.header-rates[data-tab="mortgage"] .latest-rate[data-tabs]:not([data-tabs~="mortgage"]) { display: none; }
.header-rates[data-tab="inflation"] :is(.as-at, .latest-rates:not(.latest-cpi)),
.header-rates:not([data-tab="inflation"]) .latest-cpi { display: none; }
.as-at { margin: 0 0 8px; font-size: 0.9rem; font-weight: 600; color: var(--accent); }
.header-rates .as-at { display: inline-block; padding: 2px 10px; border-radius: 999px; background: var(--accent-soft); font-size: 0.8rem; }
.latest-rates { display: flex; flex-wrap: wrap; gap: 4px 20px; margin: -2px 0 10px; font-size: 0.9rem; font-variant-numeric: tabular-nums; }
.header-rates .latest-rates { margin-bottom: 4px; }
.latest-rate { display: inline-flex; align-items: baseline; gap: 6px; white-space: nowrap; }
.latest-rate .latest-name, .latest-rate .latest-date { color: var(--muted); }
.latest-rate .latest-date { font-size: 0.8rem; }

/* ---- Tabs ---- */

.tabs { display: flex; gap: 4px; margin: 16px 0 0; border-bottom: 1px solid transparent; }
.tabs [role="tab"] {
  background: transparent; color: var(--muted); border: 1px solid transparent; border-bottom: 0;
  border-radius: 10px 10px 0 0; padding: 10px 20px; margin-bottom: -1px; white-space: nowrap; font-weight: 600;
  transition: color .15s, background .15s;
}
.tabs [role="tab"]:hover { color: var(--accent); }
.tabs [role="tab"][aria-selected="true"] {
  color: var(--text); background: var(--surface); border-color: var(--border); box-shadow: 0 -2px 0 var(--accent) inset;
}
.tabs [role="tab"][aria-selected="true"]:hover { color: var(--text); }
/* Each tab's form card attaches to the tab bar the same way (every panel, not just the first); the PV tab's calculator
   form sits after the (hidden) cash flows form, so it attaches the same way. Only under the first tab is its top-left
   corner square (see .header-rates) */
[role="tabpanel"] > .card:first-child, [role="tabpanel"] > form.card { margin-top: 0; }
#panel-interest > .card:first-child { border-top-left-radius: 0; }

/* ---- Cards and collapsible sections ---- */

.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin: 24px 0;
  box-shadow: var(--shadow);
}
details summary { cursor: pointer; font-weight: 600; }
.advanced {
  grid-column: 1 / -1; border: 1px solid var(--border); border-radius: 12px; padding: 10px 14px;
  background: color-mix(in srgb, var(--bg) 60%, transparent); transition: border-color .15s;
}
.advanced:hover, .advanced[open] { border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }
.advanced summary { font-size: 0.95rem; padding: 4px 0; }
.advanced-body { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-top: 14px; }
.cash-flows-body { display: grid; gap: 16px; margin-top: 14px; }

/* ---- Form fields: a label above every control; every control 44px tall ---- */

form { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; }
label { display: grid; gap: 6px; align-content: start; font-size: 0.9rem; font-weight: 600; min-width: 0; letter-spacing: 0.01em; }
/* A control that isn't a <label> (a segmented control and what it opens): the same label gap, so boxes in a row line up */
.field { display: grid; gap: 6px; align-content: start; min-width: 0; font-size: 0.9rem; font-weight: 600; }
.field .help-text { grid-column: auto; }
/* A control with three or four options is wider than a quarter-width column: it takes two (one column on a phone) and
   fills them, options spread evenly, so there's no gap before the next field */
.field.wide { grid-column: span 2; }
.field.wide > .seg { display: flex; width: 100%; }
.field.wide > .seg > label { flex: 1 1 0; }
/* Label and control on one line (Apply payments first to) */
.field.inline { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px; min-height: 44px; }
.field.inline > .label-row { min-width: 8.5em; }
.field.inline > .help-text { flex-basis: 100%; }
label.inline { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
label.inline select { width: auto; }
.label-row { display: flex; align-items: center; gap: 6px; }
fieldset.source, .payments { border: 0; padding: 0; margin: 0; min-width: 0; }
.source { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 8px; }
.source.field { display: grid; gap: 6px; } /* a .source that is also a .field (Mortgage rate) lays out as a field */
.source legend, .payments legend { font-size: 0.9rem; font-weight: 600; padding: 0; }
.source legend { margin-bottom: 8px; }
.payments legend { margin-bottom: 6px; }
.payments { grid-column: 1 / -1; }
.actions { grid-column: 1 / -1; display: flex; gap: 12px; }
.error { grid-column: 1 / -1; color: var(--error); margin: 0; }
.loan-line { grid-column: 1 / -1; margin: -4px 0 0; font-size: 0.9rem; color: var(--muted); }
.loan-line:empty { display: none; }
.rate-hint { display: block; font-size: 0.82rem; font-weight: normal; color: var(--muted); min-height: 0; }
.rate-hint:empty { display: none; }

input, select {
  font: inherit; padding: 8px 10px; border: 1px solid var(--border); border-radius: 10px; background: var(--bg); color: var(--text);
  transition: border-color .15s, box-shadow .15s;
}
input[type="text"], input[type="date"], select {
  display: block; width: 100%; min-width: 0; max-width: 100%; margin: 0;
  height: 44px; /* one height for every field; iOS otherwise sizes date and select boxes natively */
}
input:hover, select:hover { border-color: color-mix(in srgb, var(--accent) 50%, var(--border)); }
input:focus-visible, select:focus-visible { outline: none; border-color: var(--accent); box-shadow: var(--ring); }
/* iOS Safari: drop the native date styling (centred text, extra height and width) so it matches text inputs */
input[type="date"] { -webkit-appearance: none; appearance: none; text-align: left; }
input[type="date"]::-webkit-date-and-time-value { text-align: left; margin: 0; }
input[type="date"]::-webkit-calendar-picker-indicator { opacity: 0.7; }
label.check { display: flex; align-items: center; gap: 8px; font-weight: normal; font-size: 0.95rem; cursor: pointer; }
label.check input { width: 16px; height: 16px; margin: 0; accent-color: var(--accent); }

/* Number with − and + (rates, spreads, years): no wider than the number needs */
.stepper {
  display: flex; height: 44px; border: 1px solid var(--border); border-radius: 10px; background: var(--bg); overflow: hidden;
}
form .stepper { max-width: 200px; }
.stepper:focus-within { outline: none; border-color: var(--accent); box-shadow: var(--ring); }
.stepper input { height: 100%; border: 0; border-radius: 0; background: transparent; text-align: center; outline: none; }
.stepper .step {
  flex: none; width: 40px; padding: 0; border: 0; border-radius: 0; background: transparent;
  color: var(--accent); font-size: 1.25rem; line-height: 1;
}
.stepper .step:hover { background: var(--surface); }

/* ---- Segmented controls (radios in .seg, or toggle buttons with aria-pressed): as tall as a text box; the chosen
   option is a rounded "thumb" inset in the track, which ui-motion.js slides to a new choice; on a phone each fills the
   row with equal parts, like the iOS segmented control ---- */

.seg {
  position: relative; display: inline-flex; justify-self: start; gap: 2px; padding: 3px;
  border: 1px solid var(--ctl-border); border-radius: 10px; background: var(--bg); overflow: hidden;
}
.source .seg, .pv-mode.seg { display: flex; width: 100%; max-width: 480px; }
.seg label { position: relative; z-index: 1; display: flex; flex: 1 1 auto; font-weight: 500; cursor: pointer; }
.source .seg label, .pv-mode.seg > button { flex: 1 1 0; }
.seg input { position: absolute; opacity: 0; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.seg span, .seg > button {
  display: flex; flex: 1; align-items: center; justify-content: center; min-height: 36px; padding: 0 12px;
  border-radius: 7px; font-size: 0.9rem; text-align: center; white-space: nowrap; color: var(--ctl-text); transition: color .2s;
}
.seg > button { position: relative; z-index: 1; flex: 1 1 auto; border: 0; background: transparent; font-weight: 500; box-shadow: none; }
.seg label:hover span, .seg > button:hover { background: color-mix(in srgb, var(--accent) 8%, transparent); color: var(--accent); }
.seg label:has(input:checked) span { background: var(--chosen); color: var(--accent); font-weight: 600; box-shadow: 0 1px 2px rgba(0, 0, 0, .18); }
.seg > button[aria-pressed="true"] { background: var(--chosen); color: var(--accent); font-weight: 600; }
/* With the sliding thumb in place, the option itself has no background */
.seg-thumb {
  position: absolute; top: 0; left: 0; z-index: 0; border-radius: 7px; pointer-events: none;
  background: var(--chosen); box-shadow: 0 1px 2px rgba(0, 0, 0, .18);
}
.seg:not(.has-thumb) .seg-thumb { display: none; }
.seg.has-thumb label:has(input:checked) span, .seg.has-thumb > button[aria-pressed="true"] { background: transparent; box-shadow: none; }
.seg label:has(input:focus-visible) span, .seg > button:focus-visible { box-shadow: var(--ring); }
/* A segmented control with what it opens directly under it, at the same width: a frequency list, a symbol box */
.seg-stack { display: grid; gap: 6px; justify-self: start; min-width: 0; }
.seg-stack > .seg { display: flex; }
.seg-stack > select, .seg-stack > input { width: 100%; max-width: none; }
.view-seg { margin: 12px 0 8px; }
.range-row .view-seg { margin: 0; }

/* ---- Buttons ---- */

button {
  font: inherit; font-weight: 600; padding: 10px 22px; border-radius: 10px; border: 1px solid var(--accent);
  background: var(--accent); color: var(--accent-text); cursor: pointer;
  transition: transform .1s, box-shadow .15s, background .15s, filter .15s;
}
/* The solid buttons (Calculate) brighten and glow on hover; others don't */
button:not(.step):not(.help):not(.chip):not(.sort):not(.secondary):not([role="tab"]):not(.seg > button):hover {
  filter: brightness(1.08); box-shadow: 0 4px 12px color-mix(in srgb, var(--accent) 35%, transparent);
}
button:active { transform: translateY(1px); }
button:focus-visible { outline: none; box-shadow: var(--ring); }
button:disabled { opacity: 0.6; cursor: progress; }
button:disabled[title] { cursor: not-allowed; } /* out-of-date results: press Calculate first */
button.secondary { background: transparent; color: var(--accent); }
button.secondary:hover { background: var(--accent-soft); }
.actions button[type="submit"] { padding-inline: 28px; }
/* Small rounded quick-fill buttons (years ago, examples, Swap) */
button.chip {
  height: auto; min-height: 0; padding: 3px 10px; border: 1px solid var(--border); border-radius: 999px;
  background: transparent; color: var(--muted); font-size: 0.78rem; font-weight: 500; line-height: 1.3; cursor: pointer;
}
button.chip:hover { border-color: var(--accent); color: var(--accent); background: transparent; }
button.chip:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
button.sort { all: unset; cursor: pointer; font: inherit; color: inherit; }
button.sort:hover, button.sort:focus-visible { color: var(--accent); }
button.sort:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.arrow { display: inline-block; min-width: 1em; font-size: 0.75em; }

/* ---- "?" help next to a setting, and the explanation it shows ---- */

button.help {
  width: 20px; height: 20px; min-height: 0; padding: 0; border-radius: 50%; flex: none;
  font-size: 0.75rem; font-weight: 700; line-height: 1; border: 1px solid var(--border); background: var(--surface); color: var(--muted);
}
button.help[aria-expanded="true"] { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.help-text { display: block; font-size: 0.82rem; font-weight: normal; line-height: 1.45; color: var(--muted); }
.help-text[hidden] { display: none; }

/* ---- Cash flow rows (Interest, Mortgage, PV by dates): date, amount, description, and a quiet remove (red on hover) ---- */

.event-rows { display: grid; gap: 8px; margin-bottom: 8px; }
.event-rows:empty { margin: 0; }
.payments-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; }
.payment-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) 44px; gap: 8px; }
.payment-row.with-label { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.4fr) 44px; }
.payment-row .remove, .cf-row .remove {
  width: 44px; height: 44px; padding: 0; font-size: 1.2rem; line-height: 1; border-color: transparent; background: transparent; color: var(--muted);
}
.payment-row .remove:hover, .cf-row .remove:hover { border-color: transparent; background: color-mix(in srgb, var(--error) 12%, transparent); color: var(--error); }
.payment-row .repeat-line { grid-column: 1 / -2; display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px; font-size: 0.9rem; color: var(--muted); }
.repeat-line select { width: auto; }
.repeat-line .repeat-count { display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; }
.repeat-line .repeat-times { width: 4.2em; text-align: center; }

/* ---- Results ---- */

.stale-note {
  position: sticky; top: 8px; z-index: 1; margin: 0 0 12px; padding: 10px 14px; border-radius: 6px;
  border: 1px solid var(--accent); background: var(--surface); font-size: 0.95rem;
}
:is(#results, #pResults, #tResults, #iResults).stale > :not(.stale-note) { opacity: 0.45; }
.warning { background: var(--warn-bg); color: var(--warn-text); padding: 10px 14px; border-radius: 10px; margin: 0 0 12px; }
.verified { margin: -8px 0 16px; font-size: 0.9rem; color: var(--muted); overflow-wrap: anywhere; }

/* Tiles: each tab's main figure (class "answer") stands out; a figure over a limit (class "fail") is red */
.summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; margin: 0 0 20px; }
.summary div { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow); }
.summary dt { color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.72rem; font-weight: 600; }
.summary dd { margin: 4px 0 0; font-size: 1.4rem; font-weight: 700; font-variant-numeric: tabular-nums; letter-spacing: -0.01em; }
.summary dd small { display: block; font-size: 0.8rem; font-weight: normal; color: var(--muted); margin-top: 2px; }
.summary .answer { background: linear-gradient(135deg, var(--accent-soft), transparent), var(--surface); border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); }
.summary .answer dd { color: var(--accent); }
.summary .fail { border-color: var(--error); }
.summary .fail dd > span { color: var(--error); }
/* Daily interest under Actual/Actual: one line per year length */
.per-diem-line { display: block; white-space: nowrap; }
.per-diem-basis { font-size: 0.58em; /* relative to the figure, so shrink-to-fit scales it too */ font-weight: normal; color: var(--muted); }

/* Tables */
.table-wrap { overflow-x: auto; margin-bottom: 16px; }
details .table-wrap { max-height: 400px; overflow-y: auto; margin-top: 12px; }
/* A table wider than its box: the edge with more to scroll to fades out (ui-motion.js sets more-left / more-right) */
.table-wrap.more-right { -webkit-mask-image: linear-gradient(to right, #000 calc(100% - 36px), transparent); mask-image: linear-gradient(to right, #000 calc(100% - 36px), transparent); }
.table-wrap.more-left { -webkit-mask-image: linear-gradient(to left, #000 calc(100% - 36px), transparent); mask-image: linear-gradient(to left, #000 calc(100% - 36px), transparent); }
.table-wrap.more-left.more-right {
  -webkit-mask-image: linear-gradient(to right, transparent, #000 36px, #000 calc(100% - 36px), transparent);
  mask-image: linear-gradient(to right, transparent, #000 36px, #000 calc(100% - 36px), transparent);
}
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; }
th { color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; font-size: 0.72rem; }
tbody tr:hover td { background: var(--accent-soft); }
.num { text-align: right; }
.row-note { display: block; font-size: 0.78rem; color: var(--accent); white-space: nowrap; }
td.formula { color: var(--muted); font-size: 0.9rem; white-space: normal; min-width: 170px; }
/* Under the results, on one line: "Download  [Word | PDF | Excel]", each a one-click download, then [Copy link | Save]
   (two lines on a phone). Buttons joined in one outline: a segmented control's shape, but no option is chosen, each acts */
.exports { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; }
.action-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; }
.action-label { font-size: 0.9rem; font-weight: 600; }
.btn-group { display: inline-flex; border: 1px solid var(--accent); border-radius: 10px; overflow: hidden; }
.btn-group > button { height: 44px; padding: 0 18px; border: 0; border-radius: 0; }
.btn-group > button + button { border-left: 1px solid var(--accent); }
.filter { margin-top: 12px; }
.rate-source p { margin: 10px 0 0; font-size: 0.9rem; overflow-wrap: anywhere; }
.rate-source p.checked { color: var(--text); }

/* Saved and recent calculations */
.saved-list { list-style: none; padding: 0; margin: 8px 0 0; display: grid; gap: 8px; }
.saved-list li { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; padding: 8px 0; border-top: 1px solid var(--border); }
.saved-list .saved-name { flex: 1 1 260px; width: auto; height: 36px; font-weight: 600; }
.saved-list .saved-meta { flex: 0 1 auto; }
.saved-list .recent-name { flex: 1 1 260px; font-weight: 600; }
.saved-list .remove { margin-left: auto; }
.saved-actions { margin-top: 12px; }
.saved-sort { margin-top: 8px; }
#savedStatus { font-size: 0.9rem; }
/* Undo, inline in the status text */
.link-button { height: auto; padding: 0; border: 0; background: none; box-shadow: none; color: var(--accent); font: inherit; font-weight: 600; text-decoration: underline; cursor: pointer; }
.saved-sort[hidden] { display: none; }

/* ---- Interest tab ---- */

#additionsResult h2, #paymentsResult h2 { font-size: 1.05rem; margin: 8px 0 4px; }
.switch-fields { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; }
/* Rate change from a date: the new rate's fields indented under it */
#switchFields { padding-left: 14px; border-left: 2px solid color-mix(in srgb, var(--accent) 35%, transparent); }

/* ---- Mortgage tab: comparison, schedule, chart and rate history ---- */

.no-extra .m-extra-col, .no-cap .m-cap-col { display: none; }
.m-section { font-size: 1.05rem; margin: 28px 0 4px; }
.m-note { margin: 0 0 8px; }
.compare th { white-space: normal; vertical-align: bottom; }
.compare tr.selected td { background: var(--surface); font-weight: 600; }
.compare .badge { display: inline-block; margin-left: 6px; padding: 1px 6px; border-radius: 10px; font-size: 0.75rem; font-weight: 600; background: var(--accent); color: var(--accent-text); }
td.applied { font-weight: 700; color: var(--text); }
td.applied::after { content: ' ✓'; color: var(--accent); font-weight: 600; }
.schedule-wrap { max-height: 520px; overflow: auto; }
.schedule-wrap thead th { position: sticky; top: 0; background: var(--bg); }
/* Wide mortgage tables (comparison; 10-column HIBOR schedule): compact so they fit on laptop screens with any font */
.compare th, .compare td, .schedule-wrap th, .schedule-wrap td, #mYearlyWrap th, #mYearlyWrap td { padding: 6px 7px; font-size: 0.88rem; }

/* Charts (Mortgage rate history, Inflation) */
.chart, .chart-card { --series-1: #2a78d6; --series-2: #eb6834; --series-3: #1baf7a; --grid: #e4e4df; }
@media (prefers-color-scheme: dark) {
  .chart, .chart-card { --series-1: #3987e5; --series-2: #d95926; --series-3: #199e70; --grid: #34342f; }
}
.chart { position: relative; margin: 8px 0; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart .legend { display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: 0.85rem; color: var(--muted); margin-bottom: 4px; }
.chart .legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 6px; vertical-align: -1px; }
.chart .tip {
  position: absolute; pointer-events: none; background: var(--surface); border: 1px solid var(--border);
  border-radius: 6px; padding: 6px 10px; font-size: 0.82rem; box-shadow: 0 4px 14px rgba(0,0,0,.12); white-space: nowrap;
}
.chart .tip i { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; }
#hiborChart svg { touch-action: pan-y; }
.range-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; margin: 12px 0 8px; }
.range-row label.inline { font-weight: normal; }
.range-row input[type="date"] { width: auto; }
/* Rate history: a checkbox per line, then its spread or HIBOR choice */
.series-ctls { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 8px 20px; margin: 4px 0 12px; }
.series-ctl { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 6px 8px; }
.series-ctl .stepper { flex: none; width: 132px; }
.series-ctl .seg { flex: none; }
.series-ctl .swatch, .chart-card .swatch { display: inline-block; width: 10px; height: 10px; border-radius: 2px; }

/* ---- PV tab: cash flows (by dates, or BA II rows by periods) or the N, I/Y, PV, PMT, FV calculator ---- */

.pv-mode { grid-column: 1 / -1; margin: 12px 0 8px; }
.pv-flows-note { margin: 0 0 8px; }
#pform:not(.periods) .periods-only, #pform.periods .dates-only { display: none !important; }
#pTable.periods .col-days { display: none; }
#pRows .working { white-space: nowrap; color: var(--muted); font-size: 0.85rem; }
#pRows .before { color: var(--muted); font-size: 0.8rem; display: block; }
#pFoot td { font-weight: 700; border-top: 2px solid var(--border); }
/* By periods: CF0, C01 + frequency, ..., with the periods each covers under its name */
.cf-row, .cf-cols { display: grid; grid-template-columns: 84px minmax(0, 1fr) 120px minmax(0, 1.4fr) 44px; gap: 8px; align-items: center; }
.cf-cols { margin-bottom: -2px; font-size: 0.8rem; font-weight: 600; color: var(--muted); }
.cf-head-cell { display: grid; line-height: 1.2; }
.cf-name { font-weight: 700; font-variant-numeric: tabular-nums; }
.cf-when { font-size: 0.78rem; color: var(--muted); white-space: nowrap; }
.cf-freq { text-align: center; }
.cf-freq-field { display: block; min-width: 0; }
.cf-freq-tag { display: none; }
.cf-row.cf0 .cf-freq-field, .cf-row.cf0 .remove { visibility: hidden; }
/* Calculator */
.tvm-examples { grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.tvm-solve { grid-column: 1 / -1; }
.tvm-n { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; }
.tvm-n select { width: auto; }
/* A number with − and + beside its unit (Mortgage tenor, calculator term): narrower buttons so both fit a column */
.tvm-n .stepper { max-width: none; }
.tvm-n .stepper .step { width: 30px; }
.tvm-n .stepper input { padding: 0 2px; }
#tform label.solved input:not([type="radio"]) { border-style: dashed; color: var(--accent); font-weight: 700; }

/* ---- Inflation tab: Now | Year with the year (and month) under it, all one width; "Years ago" shortcuts on one row
   under their label; Swap beside "Worth in" ---- */

#iInField .seg-stack, #iWorthField .seg-stack { width: 100%; max-width: 220px; justify-self: start; }
#iInField .seg-stack > .seg, #iWorthField .seg-stack > .seg { justify-self: stretch; }
.i-when { display: flex; flex-wrap: wrap; gap: 8px; min-width: 0; }
.i-when .stepper { flex: 1 1 100%; max-width: none; }
.i-when select { flex: 1 1 100%; min-width: 0; }
.i-pick { display: flex; gap: 8px; min-width: 0; }
.i-pick select { flex: 1; min-width: 0; }
.i-shortcuts { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 6px; max-width: 220px; }
.i-shortcuts > .muted { grid-column: 1 / -1; font-size: 0.82rem; }
.i-shortcuts .chip { padding: 3px 0; }
.i-shortcuts .chip[aria-pressed="true"] { border-color: var(--accent); color: var(--accent); }
button.chip.i-swap { padding: 2px 10px; }
/* "Start (= 100)" above its year and month, like any field */
.i-rebase { display: grid; gap: 6px; max-width: 360px; margin: 12px 0 8px; }

/* ---- Footer and terms page ---- */

.about { margin-top: 32px; padding-top: 16px; border-top: 1px solid var(--border); color: var(--muted); font-size: 0.9rem; }
.about p { margin: 0; }
.about .disclaimer, .about .license { margin-top: 12px; font-size: 0.85rem; }
.about .license a { white-space: nowrap; }
.terms { max-width: 760px; }
.terms h2 { font-size: 1.1rem; margin: 28px 0 6px; }
.terms p { margin: 0 0 10px; }

/* ---- Animations (ui-motion.js); off with Reduce Motion ---- */

.seg.thumb-ready .seg-thumb { transition: transform .25s cubic-bezier(.2, .7, .3, 1), width .25s cubic-bezier(.2, .7, .3, 1); }
@media (prefers-reduced-motion: reduce) { .seg.thumb-ready .seg-thumb { transition: none; } }

/* ---- Phones ---- */

/* Four tabs on a phone: tighter spacing so the labels stay on one line, even with wider fonts (Linux); on the narrowest
   screens a label may wrap rather than push the page sideways */
@media (max-width: 420px) {
  .tabs { gap: 2px; }
  .tabs [role="tab"] { padding: 10px 9px; }
}
@media (max-width: 359px) {
  .tabs [role="tab"] { white-space: normal; }
}
@media (max-width: 600px) {
  .card { padding: 16px; }
  /* Rates strip: one line per rate in three columns (name, rate right-aligned so the decimal points line up, date) */
  .latest-rates { display: grid; grid-template-columns: max-content max-content 1fr; align-items: baseline; gap: 2px 10px; }
  .latest-rate { display: contents; }
  .latest-rate strong { text-align: right; }
  .field.wide { grid-column: auto; }
  .field.inline > .label-row { min-width: 0; }
  form .stepper { max-width: none; }
  #iInField .seg-stack, #iWorthField .seg-stack, .i-shortcuts { max-width: none; }
  /* Segmented controls fill the row with equal parts */
  .seg, .seg-stack, .source .seg { display: flex; width: 100%; max-width: none; justify-self: stretch; }
  .seg-stack { display: grid; }
  .seg label, .seg > button { flex: 1 1 0; min-width: 0; }
  .seg span, .seg > button { padding: 0 6px; min-width: 0; }
  .source .seg span { padding: 0 2px; font-size: 0.82rem; } /* four options: Judgment / HK Prime / US Prime / Fixed */
  .series-ctl .seg { width: auto; margin-left: auto; }
  /* Cash flow rows: date, then amount, then description, each the full width, with remove beside the date; a
     repeating row's "Every ..." line last */
  .payment-row, .payment-row.with-label { grid-template-columns: minmax(0, 1fr) 44px; }
  .payment-row .pay-date { grid-column: 1; grid-row: 1; }
  .payment-row .remove { grid-column: 2; grid-row: 1; }
  .payment-row .pay-amount { grid-column: 1; grid-row: 2; }
  .payment-row.with-label .pay-label { grid-column: 1; grid-row: 3; }
  .payment-row.with-label .repeat-line { grid-column: 1 / -1; grid-row: 4; }
  .event-rows { gap: 14px; }
  .action-row, .btn-group { width: 100%; }
  .btn-group > button { flex: 1 1 0; min-width: 0; padding: 0 8px; }
  /* PV by periods: name on the left; amount, frequency (with its tag, no column heading) and description stacked */
  .cf-cols { display: none !important; }
  .cf-row { grid-template-columns: 64px minmax(0, 1fr) 44px; }
  .cf-row .cf-head-cell { grid-row: 1 / span 3; align-self: start; padding-top: 10px; }
  .cf-row .cf-amount { grid-column: 2; grid-row: 1; }
  .cf-row .remove { grid-column: 3; grid-row: 1; }
  .cf-row .cf-freq-field { grid-column: 2; grid-row: 2; display: flex; align-items: center; gap: 10px; }
  .cf-freq-tag { display: inline; font-size: 0.85rem; color: var(--muted); }
  .cf-freq-field .cf-freq { width: 96px; flex: none; }
  .cf-row .cf-label { grid-column: 2; grid-row: 3; }
  .cf-row.cf0 .cf-freq-field { display: none; }
}

/* ---- Save as PDF / print: results only, light colours, everything expanded ---- */

@media print {
  :root {
    --bg: #fff; --surface: #fff; --text: #000; --muted: #444; --border: #bbb; --accent: #000;
    --warn-bg: #fff4d6; --warn-text: #000;
    color-scheme: light;
  }
  @page { margin: 14mm; }
  body { font-size: 11pt; background: #fff; }
  main { max-width: none; padding: 0; }
  .tagline, .header-rates .latest-rates, .about, form, .exports, label.filter, .stale-note, details summary::marker { display: none; }
  .header-rates { border: 0; padding: 0; background: none; }
  .print-only { display: grid; }
  .inputs-list { grid-template-columns: max-content 1fr; gap: 4px 16px; margin: 0 0 16px; }
  .inputs-list div { display: contents; }
  .inputs-list dt { color: var(--muted); }
  .inputs-list dd { margin: 0; overflow-wrap: anywhere; }
  .card, .header-rates, .summary div { box-shadow: none; }
  .summary { grid-template-columns: repeat(4, 1fr); }
  .summary dd { font-size: 1.1rem; }
  .summary .answer { background: none; }
  .table-wrap, details .table-wrap { overflow: visible; max-height: none; }
  .table-wrap { -webkit-mask-image: none !important; mask-image: none !important; }
  th, td { padding: 4px 6px; }
  td.formula, th { white-space: normal; }
  tr { break-inside: avoid; }
  .card { border: 0; padding: 0; margin: 16px 0 0; }
  details summary { list-style: none; font-size: 1rem; margin-bottom: 4px; }
  a { color: inherit; text-decoration: none; }
  .warning { border: 1px solid #d8b24a; }
}