/*
 * One stylesheet for the whole site.
 *
 * No font, script or stylesheet is fetched from another origin, so a page costs
 * one HTML request and this file, which the browser then keeps for a year.
 *
 * Two rules shape everything below:
 *   1. On a 360 px phone the heading, the inputs with their defaults and the
 *      headline result are on screen without scrolling, and nothing moves after
 *      the page has painted.
 *   2. Each of the eleven groups carries its own accent, so a page is
 *      recognisable at a glance, while the type, spacing and shapes stay the
 *      same everywhere. Every accent is checked to 4.5:1 against its surface in
 *      both themes before it goes in.
 */

/* ============================================================ tokens */

:root {
  color-scheme: light dark;

  /* Spacing: a 4px grid. Named by step, not by guess. */
  --s1: 0.25rem;  --s2: 0.5rem;   --s3: 0.75rem;  --s4: 1rem;
  --s5: 1.25rem;  --s6: 1.5rem;   --s8: 2rem;     --s10: 2.5rem;
  --s12: 3rem;    --s16: 4rem;

  /* Type: fluid, so a phone and a laptop each get a sensible size without a
     breakpoint doing the work. */
  --t-display: clamp(1.75rem, 1.25rem + 2.2vw, 2.75rem);
  --t-h1:      clamp(1.6rem, 1.15rem + 2vw, 2.35rem);
  --t-h2:      clamp(1.2rem, 1.05rem + 0.7vw, 1.5rem);
  --t-h3:      clamp(1.02rem, 0.98rem + 0.25vw, 1.15rem);
  --t-body:    1rem;
  --t-small:   0.875rem;
  --t-micro:   0.78rem;
  --t-figure:  clamp(2rem, 1.3rem + 3.2vw, 3.1rem);

  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  /* Shape */
  --r-sm: 8px; --r-md: 12px; --r-lg: 18px; --r-xl: 26px; --r-full: 999px;

  /* Light theme surfaces: the page is a shade off white so a card lifts off it
     without needing a shadow to prove it. */
  --page:        #f5f5fa;
  --surface:     #ffffff;
  --surface-2:   #f1f3f8;
  --ink:         #2b2b33;
  --ink-soft:    #4a4a55;
  --ink-faint:   #66666f;   /* 5.3:1 on the page, 5.6:1 on white */
  --line:        #e4e4ec;
  --line-strong: #cbd3e1;

  --brand:       #c2410c;   /* saffron, deep enough for white text (5.2:1) */
  --brand-ink:   #ffffff;
  --logo:        #e8590c;   /* the logo's own saffron: never changes with a group or tool */
  --logo-text:   #c2410c;
  --accent-soft: color-mix(in srgb, var(--brand) 13%, var(--surface));
  --accent-edge: color-mix(in srgb, var(--brand) 22%, var(--line));
  --accent-glow: color-mix(in srgb, var(--brand) 9%, var(--page));

  --good: #0f7a4a;
  --warn-ink: #8a5300;
  --warn-wash: #fdf4e3;
  --bad: #b3243a;

  --shadow-card: 0 1px 2px rgb(16 20 29 / 0.05), 0 8px 24px -12px rgb(16 20 29 / 0.14);
  --shadow-lift: 0 2px 4px rgb(16 20 29 / 0.06), 0 14px 30px -14px rgb(16 20 29 / 0.2);

  --measure: 68ch;
  --page-w: 46rem;
  --gutter: 1rem;

  --ease: cubic-bezier(.2, 0, 0, 1);
  --fast: 140ms;
}
@supports (color: color-mix(in srgb, red, red)) { :root {   /* the same saffron as text: 5.2:1 on white (the mark itself may be brighter) */
  --accent-wash: color-mix(in srgb, var(--brand) 7%, var(--surface));} }

/* Each group's accent. Picked at a similar weight so the site reads as one
   family, and each one checked against its surface in both themes. */
[data-category="finance"]     { --brand: #1d4ed8; }
[data-category="schemes"]     { --brand: #0f766e; }
[data-category="tax"]         { --brand: #b2400e; }
[data-category="calculators"] { --brand: #4338ca; }
[data-category="converters"]  { --brand: #0369a1; }
[data-category="health"]      { --brand: #be123c; }
[data-category="home"]        { --brand: #a16207; }
[data-category="student"]     { --brand: #6d28d9; }
[data-category="text"]        { --brand: #1f6f3f; }
[data-category="developer"]   { --brand: #334155; }
[data-category="files"]       { --brand: #9333ea; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --page:        #0d1016;
    --surface:     #171a21;
    --surface-2:   #1f232c;
    --ink:         #e9edf4;
    --ink-soft:    #a7b1c2;
    --ink-faint:   #818b9c;
    --line:        #2a2f3a;
    --line-strong: #3a4150;
    --brand:       #ff8a4c;
    --brand-ink:   #0d1016;
    --logo:        #ff7a33;
    --logo-text:   #ff8a4c;
    --good: #5bd39a;
    --warn-ink: #e8bb55;
    --warn-wash: #2a2313;
    --bad: #ff8d9c;
    --shadow-card: 0 1px 2px rgb(0 0 0 / 0.5);
    --shadow-lift: 0 10px 28px -12px rgb(0 0 0 / 0.75);
  }
  :root:not([data-theme="light"])[data-category="finance"]     { --brand: #8ab4ff; }
  :root:not([data-theme="light"])[data-category="schemes"]     { --brand: #5ed9c8; }
  :root:not([data-theme="light"])[data-category="tax"]         { --brand: #ffa472; }
  :root:not([data-theme="light"])[data-category="calculators"] { --brand: #a9a5ff; }
  :root:not([data-theme="light"])[data-category="converters"]  { --brand: #7cc8f0; }
  :root:not([data-theme="light"])[data-category="health"]      { --brand: #ff9aad; }
  :root:not([data-theme="light"])[data-category="home"]        { --brand: #f0c04a; }
  :root:not([data-theme="light"])[data-category="student"]     { --brand: #c3a6ff; }
  :root:not([data-theme="light"])[data-category="text"]        { --brand: #79d39b; }
  :root:not([data-theme="light"])[data-category="developer"]   { --brand: #aab8c9; }
  :root:not([data-theme="light"])[data-category="files"]       { --brand: #dcaaff; }
}

/* ============================================================ base */

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  /* A flat, quiet page: the colour lives on the icons, buttons and result, so
     the eye goes to what can be pressed. */
  background: var(--page);
  color: var(--ink);
  font-family: var(--font);
  font-size: var(--t-body);
  line-height: 1.6;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;   /* before Chrome 90 */
  overflow-x: clip;
}

h1, h2, h3 {
  line-height: 1.2; margin: 0 0 var(--s3);
  font-weight: 650; letter-spacing: -0.022em; text-wrap: balance;
}
h1 { font-size: var(--t-h1); }
h2 { font-size: var(--t-h2); margin-top: var(--s8); }
h3 { font-size: var(--t-h3); margin-top: var(--s5); font-weight: 650; }

p { margin: 0 0 var(--s4); }
ol, ul { margin: 0 0 var(--s4); padding-left: 1.3rem; }
li { margin-bottom: var(--s2); }
li::marker { color: var(--brand); }

/* Reading width applies to running text, not to grids of cards. */
.block > p, .block > ol, .block > ul:not([class]), .definition, .lead, .tool__summary { max-width: var(--measure); }

a { color: var(--brand); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

small, .small { font-size: var(--t-small); }
.muted { color: var(--ink-soft); }
code, pre, .mono { font-family: var(--font-mono); font-size: 0.9em; }

:focus-visible { outline: 3px solid var(--brand); outline-offset: 2px; border-radius: var(--r-sm); }

.icon { flex: none; display: block; }

.wrap {
  width: 100%; max-width: var(--page-w); margin: 0 auto;
  padding-left: var(--gutter); padding-right: var(--gutter);
  padding-left: max(var(--gutter), env(safe-area-inset-left)); padding-right: max(var(--gutter), env(safe-area-inset-right));
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
[hidden] { display: none !important; }

/* ============================================================ chrome */

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 30;
  background: var(--brand); color: var(--brand-ink);
  padding: var(--s3) var(--s4); border-radius: 0 0 var(--r-md) 0; font-weight: 600;
}
.skip:focus { left: 0; }

.site-head {
  position: sticky; top: 0; z-index: 20;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
/* The header runs the full width of the window, logo hard left, like an app bar. */
.site-head .wrap { max-width: none; }
.site-head__row { display: flex; align-items: center; gap: var(--s2); min-height: 60px; }

.brand {
  display: inline-flex; align-items: center; gap: var(--s2);
  font-weight: 800; font-size: 1.2rem; letter-spacing: -0.035em;
  color: var(--ink); text-decoration: none; white-space: nowrap;
}
.brand__mark { width: 32px; height: 32px; flex: none; }
.brand__name span { color: var(--logo-text); }

/* The popular tools, beside the logo on a wide screen. */
.site-nav { display: none; }
.site-nav a, .mega > summary {
  color: var(--ink); text-decoration: none; min-height: 60px; display: inline-flex; align-items: center; gap: 4px;
  font-size: 0.82rem; font-weight: 700; letter-spacing: 0.03em; text-transform: uppercase; white-space: nowrap;
  box-shadow: inset 0 -3px 0 transparent;
}
.site-nav a:hover, .site-nav a[aria-current], .mega[open] > summary, .mega > summary:hover { color: var(--brand); }
.site-nav a[aria-current] { box-shadow: inset 0 -3px 0 var(--brand); }

/* PDF Tools: a dropdown that opens on hover or keyboard focus, no script needed. */
.navdrop { position: relative; display: flex; }
.navdrop__trigger .icon { transition: transform var(--fast) var(--ease); }
.navdrop:hover .navdrop__trigger, .navdrop:focus-within .navdrop__trigger { color: var(--brand); }
.navdrop:hover .navdrop__trigger .icon, .navdrop:focus-within .navdrop__trigger .icon { transform: rotate(180deg); }
.navdrop__panel {
  position: absolute; top: 100%; left: 50%; z-index: 25; min-width: 17.5rem;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg);
  box-shadow: 0 24px 48px -20px rgb(16 20 29 / 0.35); padding: var(--s2);
  opacity: 0; visibility: hidden; transform: translate(-50%, 8px);
  transition: opacity 150ms ease, transform 150ms ease, visibility 0s linear 150ms;
}
.navdrop:hover .navdrop__panel, .navdrop:focus-within .navdrop__panel {
  opacity: 1; visibility: visible; transform: translate(-50%, 0); transition-delay: 0s;
}
.navdrop__panel ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.navdrop__panel li { margin: 0; }
.site-nav .navdrop__panel a {
  min-height: 44px; display: flex; align-items: center; gap: var(--s3); padding: var(--s2) var(--s3);
  border-radius: var(--r-md); box-shadow: none; white-space: nowrap;
  text-transform: none; letter-spacing: 0; font-size: 0.95rem; font-weight: 600; color: var(--ink);
}
.site-nav .navdrop__panel a:hover, .site-nav .navdrop__panel a[aria-current] { background: var(--surface-2); color: var(--ink); }
.site-nav .navdrop__panel .navdrop__all { margin-top: var(--s1); border-top: 1px solid var(--line); border-radius: 0 0 var(--r-md) var(--r-md); color: var(--brand); font-size: var(--t-small); }

/* Every tool, by group. A <details>, so it opens with no script at all. On a
   phone its summary is the menu button at the far left. */
.mega > summary { list-style: none; cursor: pointer; user-select: none; }
.mega > summary::-webkit-details-marker { display: none; }
.mega__burger { display: none; }
.mega[open] .mega__chev { transform: rotate(180deg); }
.mega__panel {
  position: absolute; left: 0; right: 0; top: 100%; z-index: 25;
  background: var(--surface); border-bottom: 1px solid var(--line);
  box-shadow: 0 28px 40px -28px rgb(16 20 29 / 0.35);
  padding: var(--s6) max(var(--gutter), calc((100vw - 76rem) / 2));
  display: grid; grid-template-columns: repeat(auto-fill, minmax(13rem, 1fr)); gap: var(--s6) var(--s8);
  max-height: calc(100vh - 60px); overflow-y: auto; overscroll-behavior: contain;
}
.mega__head { margin: 0 0 var(--s2); }
.mega__head a { display: flex; align-items: center; gap: var(--s2); color: var(--ink); text-decoration: none; font-weight: 750; font-size: 0.82rem; letter-spacing: 0.03em; text-transform: uppercase; }
.mega__group .tile, .menu__groups .tile {
  width: 28px; height: 28px; border-radius: var(--r-sm); flex: none;
  display: grid; place-items: center; color: var(--brand-ink); background: var(--brand);
}
.mega__group ul { list-style: none; padding: 0; margin: 0; display: grid; }
.mega__group li { margin: 0; }
.mega__group li a { display: block; padding: 5px 0 5px 36px; color: var(--ink-soft); text-decoration: none; font-size: var(--t-small); }
.mega__group li a:hover { color: var(--brand); }
.mega__group .mega__all { color: var(--brand); font-weight: 650; }

/* The groups, as a grid of tiles, behind the button at the far right. */
.menu { position: relative; }

/* ---- header search: an icon that opens a box sliding out to the left ---- */
.hsearch { position: relative; margin-left: auto; }
.hsearch__toggle {
  width: 44px; height: 44px; border-radius: var(--r-md); display: grid; place-items: center; color: var(--ink);
}
.hsearch__toggle:hover, .hsearch.is-open .hsearch__toggle { background: var(--surface-2); color: var(--brand); }
.hsearch__box {
  position: absolute; right: 0; top: 50%; transform: translateY(-50%); z-index: 30;
  width: min(30rem, calc(100vw - 2 * var(--gutter)));
  visibility: hidden; transition: visibility 0s linear 260ms;
}
.hsearch.is-open .hsearch__box { visibility: visible; transition-delay: 0s; }
/* The field wipes open from the icon: clip-path animates without squashing the text. */
.hsearch__field {
  display: flex; align-items: center; gap: var(--s2); height: 46px; padding: 0 var(--s2) 0 var(--s4);
  background: var(--surface); border: 1.5px solid var(--brand); border-radius: var(--r-full);
  box-shadow: 0 10px 30px -14px rgb(16 20 29 / 0.35);
  clip-path: inset(0 0 0 100% round 999px); opacity: 0;
  transition: clip-path 260ms cubic-bezier(.2, 0, 0, 1), opacity 160ms ease;
}
.hsearch.is-open .hsearch__field { clip-path: inset(0 0 0 0 round 999px); opacity: 1; }
.hsearch__icon { color: var(--brand); display: grid; }
.hsearch .hsearch__input {
  flex: 1; min-width: 0; border: 0; background: transparent; box-shadow: none;
  min-height: 40px; padding: 0; font-size: 1rem; font-weight: 500;
}
.hsearch .hsearch__input:focus { outline: none; box-shadow: none; }
.hsearch__input::-webkit-search-cancel-button { display: none; }
.hsearch__close {
  width: 34px; height: 34px; border: 0; border-radius: var(--r-full); background: var(--surface-2);
  color: var(--ink-soft); font-size: 1.3rem; line-height: 1; cursor: pointer;
}
.hsearch__close:hover { color: var(--ink); }
.hsearch__list {
  position: absolute; left: 0; right: 0; top: calc(100% + 10px); margin: 0; padding: var(--s2); list-style: none;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg);
  box-shadow: 0 24px 48px -20px rgb(16 20 29 / 0.35); max-height: min(70vh, 30rem); overflow-y: auto;
  animation: hsearch-in 180ms ease;
}
@keyframes hsearch-in { from { opacity: 0; transform: translateY(-6px); } }
.hsearch__list li { margin: 0; }
.hsearch__list a {
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: var(--s3);
  padding: var(--s2) var(--s3); border-radius: var(--r-md); color: var(--ink); text-decoration: none;
}
.hsearch__list .is-active a, .hsearch__list a:hover { background: var(--surface-2); }
.hsearch__name { font-weight: 600; font-size: 0.95rem; }
.hsearch__group { font-size: var(--t-micro); color: var(--ink-faint); white-space: nowrap; }
.hsearch__none { padding: var(--s3); color: var(--ink-soft); font-size: var(--t-small); }
.menu > summary {
  list-style: none; cursor: pointer; width: 44px; height: 44px; border-radius: var(--r-md);
  display: grid; place-items: center; color: var(--ink);
}
.menu > summary::-webkit-details-marker { display: none; }
.menu > summary:hover, .menu[open] > summary { background: var(--surface-2); color: var(--brand); }
.menu__panel {
  position: absolute; right: 0; top: calc(100% + 8px); z-index: 25;
  width: min(30rem, calc(100vw - 2 * var(--gutter)));
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg);
  box-shadow: 0 24px 48px -20px rgb(16 20 29 / 0.35); padding: var(--s3);
}
.menu__groups { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 2px; }
.menu__groups li { margin: 0; }
.menu__groups a {
  display: flex; align-items: center; gap: var(--s3); min-height: 48px;
  padding: var(--s2) var(--s3); border-radius: var(--r-md);
  color: var(--ink); text-decoration: none; font-size: var(--t-small); font-weight: 650;
}
.menu__groups a:hover { color: var(--brand); }
@supports (color: color-mix(in srgb, red, red)) { .menu__groups a:hover { background: color-mix(in srgb, var(--brand) 8%, var(--surface));} }
.menu__foot { margin: var(--s3) 0 0; display: grid; gap: var(--s2); }

.crumbs { font-size: var(--t-micro); color: var(--ink-faint); padding-top: var(--s4); }
.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: var(--s1) var(--s2); margin: 0; padding: 0; }
.crumbs li { margin: 0; }
.crumbs li + li::before { content: "/"; margin-right: var(--s2); color: var(--line-strong); }
.crumbs a { color: var(--ink-faint); text-decoration: none; }
.crumbs a:hover { color: var(--brand); text-decoration: underline; }

main { padding-bottom: 0; }
main > .wrap:last-child { padding-bottom: var(--s16); }

/* ============================================================ page header */

/* The grey stage holds the heading and the tool; what there is to read sits on
   the white band below it. */
.stage { padding-bottom: var(--s12); }
.info { background: var(--surface); border-top: 1px solid var(--line); padding: var(--s2) 0 var(--s12); }
.info .answer, .info .faq > div, .info .formula, .info .table-scroll, .info .app-block { background: var(--page); }
.info + * { margin-top: 0; }

.tool__head {
  display: grid; justify-items: center; text-align: center; gap: var(--s3);
  margin: var(--s10) auto var(--s8); max-width: 50rem;
}
.tool__head h1 { margin: 0; font-size: clamp(1.75rem, 1.2rem + 2.3vw, 2.75rem); font-weight: 650; letter-spacing: -0.025em; }
.tool__summary { color: var(--ink-soft); margin: 0 auto; font-size: clamp(1.02rem, 0.92rem + 0.5vw, 1.375rem); line-height: 1.45; }

.tag {
  display: inline-block; vertical-align: middle; margin-left: var(--s1);
  font-size: var(--t-micro); font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--ink); background: var(--accent-soft);   /* ink, not the tool colour: 4.5:1 on any tint */
  padding: 0.12rem 0.55rem; border-radius: var(--r-full);
}

.chips {
  list-style: none; margin: var(--s2) 0 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: var(--s2);
}
.chips li {
  margin: 0; display: inline-flex; align-items: center; gap: 6px;
  font-size: var(--t-micro); font-weight: 600; color: var(--ink-soft);
  background: var(--surface); border: 1px solid var(--line);
  padding: 0.3rem 0.7rem 0.3rem 0.55rem; border-radius: var(--r-full);
}
.chips .icon { color: var(--brand); }

/* ============================================================ the tool card */

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  padding: var(--s4);
  box-shadow: 0 1px 2px rgb(16 20 29 / 0.04);
}
.card--tool { display: grid; gap: var(--s4); }
.card__inputs, .card__output { min-width: 0; }

/* Two columns even on a phone: a short number takes half a row, which is
   what keeps the answer above the fold. */
.fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s4) var(--s3); }
.field { display: grid; gap: 6px; min-width: 0; align-content: start; }
.field--wide { grid-column: 1 / -1; }
/* Two fields side by side share their label row, so when one label wraps to a
   second line the two boxes still line up. */
@supports (grid-template-rows: subgrid) {
  .fields { row-gap: 0; }
  .field { grid-row: span 3; grid-template-rows: subgrid; row-gap: 6px; margin-bottom: var(--s4); }
  .field:last-child { margin-bottom: 0; }
  .field > label { align-self: end; }
}
.field > label { font-size: var(--t-small); font-weight: 600; color: var(--ink-soft); line-height: 1.35; }
.field__hint { font-size: var(--t-micro); color: var(--ink-faint); font-variant-numeric: tabular-nums; }

input[type="text"], input[type="number"], input[type="date"], input[type="datetime-local"],
input[type="search"], select, textarea {
  width: 100%; min-height: 48px;
  padding: var(--s3) var(--s4);
  font: inherit; font-size: max(1rem, 16px);
  font-variant-numeric: tabular-nums; font-weight: 550;
  color: var(--ink); background: var(--surface-2);
  border: 1.5px solid transparent;
  border-radius: var(--r-md);
  transition: border-color var(--fast) var(--ease), box-shadow var(--fast) var(--ease), background var(--fast) var(--ease);
}
select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, currentColor 50%),
                    linear-gradient(135deg, currentColor 50%, transparent 50%);
  background-position: calc(100% - 19px) 52%, calc(100% - 14px) 52%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: var(--s10);
  text-overflow: ellipsis;
}
textarea { min-height: 7rem; resize: vertical; line-height: 1.5; font-weight: 450; }
input:hover, select:hover, textarea:hover { border-color: var(--line-strong); }
input:focus, select:focus, textarea:focus {
  outline: none; background: var(--surface);
  border-color: var(--brand);
}
@supports (color: color-mix(in srgb, red, red)) { input:focus, select:focus, textarea:focus {
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--brand) 16%, transparent);} }
input:disabled, select:disabled { opacity: 0.55; cursor: not-allowed; }
input[type="range"] { width: 100%; min-height: 48px; accent-color: var(--brand); }

/* A unit inside the box: the rupee in front of an amount, % or months after. */
.control { position: relative; }
.control__affix {
  position: absolute; top: 50%; transform: translateY(-50%);
  font-weight: 650; color: var(--ink-faint); pointer-events: none; font-size: 0.95rem;
}
.control--prefix .control__affix { left: var(--s4); }
.control--prefix input { padding-left: 2.1rem; }
.control--suffix .control__affix { right: var(--s4); font-size: var(--t-small); }
.control--suffix input { padding-right: 4.6rem; }
.control--suffix input::-webkit-inner-spin-button { display: none; }

/* The file picker, drawn as one big button with "or drop them here" under it:
   choosing the files is the first thing to do, so it is the only thing that
   shouts. The real file input covers the whole label, invisibly, so a tap
   anywhere on it opens the picker. */
.field--pick { margin: 0; }
.field > .dropzone, .dropzone {
  position: relative; display: grid; justify-items: center; gap: var(--s3);
  font-size: var(--t-small); font-weight: 500; color: var(--ink-faint); line-height: 1.4;
  cursor: pointer;
}
.dropzone__button {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--s3);
  min-width: min(100%, 21rem); min-height: 80px; padding: 0 var(--s10);
  border-radius: var(--r-md); background: var(--brand); color: var(--brand-ink);
  font-size: clamp(1.2rem, 1.05rem + 0.7vw, 1.55rem); font-weight: 650; letter-spacing: -0.01em;
  transition: background var(--fast) var(--ease), box-shadow var(--fast) var(--ease), transform var(--fast) var(--ease);
}
@supports (color: color-mix(in srgb, red, red)) { .dropzone__button {
  box-shadow: 0 8px 20px -10px color-mix(in srgb, var(--brand) 80%, transparent);} }
.dropzone:hover .dropzone__button { }
@supports (color: color-mix(in srgb, red, red)) { .dropzone:hover .dropzone__button { background: color-mix(in srgb, var(--brand) 86%, #000);} }
.dropzone.over .dropzone__button { transform: scale(1.03); box-shadow: 0 0 0 8px var(--accent-soft); }
.dropzone:focus-within .dropzone__button { outline: 3px solid var(--brand); outline-offset: 3px; }
.dropzone__icon { display: inline-grid; place-items: center; }
.dropzone__again { display: none; }
.dropzone__hint { font-size: var(--t-small); color: var(--ink-faint); }
.dropzone__picked {
  font-size: var(--t-small); font-weight: 650; color: var(--brand);
  background: var(--accent-wash); border-radius: var(--r-full); padding: 0.3rem 0.9rem;
  max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.dropzone__input { position: absolute; top: 0; right: 0; bottom: 0; left: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; }
.dropzone.is-disabled { opacity: 0.6; cursor: not-allowed; }
.dropzone.is-disabled .dropzone__input { cursor: not-allowed; }

/* Once something is chosen the big button becomes a small "add more" one, so the
   action button in the side panel is what leads. */
.dropzone.has-files .dropzone__button {
  min-height: 44px; min-width: 0; padding: 0 var(--s5); font-size: var(--t-small); font-weight: 700;
  background: var(--surface); color: var(--brand); border: 1.5px solid var(--brand); box-shadow: none;
}
.dropzone.has-files:hover .dropzone__button { background: var(--accent-wash); }
.dropzone.has-files .dropzone__title { display: none; }
.dropzone.has-files .dropzone__again { display: inline; }
.workspace .dropzone.has-files .dropzone__hint { display: none; }

/* ============================================================ file workspace */

.workspace:not(.is-staged) .workspace__files,
.workspace:not(.is-staged) .workspace__side { display: none; }
.workspace { scroll-margin-top: 76px; }
.workspace__pick { display: grid; justify-items: center; }
.workspace__next { margin: var(--s3) 0 0; font-size: var(--t-small); color: var(--ink-soft); text-align: center; }
.workspace.is-staged .workspace__next { display: none; }
.workspace.is-staged .workspace__form { display: grid; gap: var(--s4); grid-template-areas: "pick" "files" "side"; }
.workspace.is-staged .workspace__pick { grid-area: pick; justify-items: end; }
.workspace__files {
  grid-area: files; list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(9.5rem, 1fr)); gap: var(--s4);
}
.file-tile {
  position: relative; margin: 0; display: grid; gap: 4px; padding: var(--s3);
  background: var(--surface); border-radius: var(--r-md);
  box-shadow: 0 2px 4px rgb(16 20 29 / 0.05), 0 6px 16px -8px rgb(16 20 29 / 0.18);
}
.file-tile__thumb {
  aspect-ratio: 3 / 4; border-radius: var(--r-sm); background: var(--surface-2);
  display: grid; place-items: center; overflow: hidden; margin-bottom: var(--s1);
}
.file-tile__thumb img { width: 100%; height: 100%; object-fit: contain; }
.file-tile__type { font-weight: 800; font-size: 0.85rem; color: var(--brand-ink); background: var(--brand); padding: 0.3rem 0.6rem; border-radius: 6px; letter-spacing: 0.04em; }
.file-tile__name { font-size: var(--t-small); font-weight: 650; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-tile__size { font-size: var(--t-micro); color: var(--ink-faint); }
.file-tile__remove {
  position: absolute; top: 6px; right: 6px; width: 32px; height: 32px; border-radius: var(--r-full);
  border: 1px solid var(--line); background: var(--surface); color: var(--ink-soft);
  font-size: 1.2rem; line-height: 1; cursor: pointer; display: grid; place-items: center;
}
.file-tile__remove:hover { color: var(--bad); border-color: var(--bad); }
.file-tile__order {
  position: absolute; top: 6px; left: 6px; min-width: 24px; height: 24px; padding: 0 6px; border-radius: var(--r-full);
  background: var(--ink); color: var(--surface); font-size: var(--t-micro); font-weight: 700; display: grid; place-items: center;
}
.workspace__side {
  grid-area: side; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: var(--s5); display: grid; gap: var(--s4); align-content: start;
}
.workspace__title { margin: 0; text-align: center; font-size: 1.35rem; font-weight: 650; padding-bottom: var(--s3); border-bottom: 1px solid var(--line); }
.workspace__side .actions--primary, .workspace__side .result { margin: 0; }
.workspace__side .privacy-note { margin: 0; }

/* ============================================================ the answer */

.result {
  padding: var(--s4) var(--s5);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, var(--accent-soft), var(--accent-wash) 70%);
  border: 1px solid var(--accent-edge);
}
.result__label, .result .label {
  margin: 0; font-size: var(--t-small); font-weight: 650; color: var(--ink-soft);
}
.result__value, .result .headline {
  margin: 2px 0 0;
  font-size: var(--t-figure); font-weight: 780; line-height: 1.1;
  letter-spacing: -0.03em; color: var(--brand);
  overflow-wrap: anywhere;
}
.result .headline { font-size: clamp(1.4rem, 1.1rem + 1.4vw, 1.9rem); }
.result__words { margin: var(--s1) 0 0; font-size: var(--t-small); color: var(--ink-soft); }
.result__words + .result__words { margin-top: var(--s2); }
.result .note { margin: var(--s3) 0 0; font-size: var(--t-small); color: var(--ink-soft); }

.result__rows {
  list-style: none; margin: var(--s4) 0 0; padding: 0;
  border-top: 1px solid var(--accent-edge);
}
.result__rows li {
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline;
  gap: 2px var(--s4); padding-top: 10px; padding-bottom: 10px; margin: 0;
  font-size: var(--t-small);
}
@supports (color: color-mix(in srgb, red, red)) { .result__rows li {
  border-bottom: 1px solid color-mix(in srgb, var(--accent-edge) 55%, transparent);} }
.result__rows li:last-child { border-bottom: 0; padding-bottom: 0; }
.result__rows .k { color: var(--ink-soft); flex: 1 1 8rem; min-width: 0; }
/* A figure is never broken across lines: "₹15,20,109.2" then "9" reads as a
   different number. The label wraps instead. */
.result__rows .v { font-weight: 700; text-align: right; white-space: nowrap; margin-left: auto; }
.result__rows li.is-text .v { white-space: normal; min-width: 0; overflow-wrap: anywhere; }
.result__rows li.is-code { display: grid; }
.result__rows li.is-code .v { white-space: pre-wrap; overflow-wrap: anywhere; text-align: left; margin: 0; }
.result__rows pre { margin: 0; max-width: 100%; }

/* What the file and lookup islands write into the result once they have run. */
.result dl { display: grid; grid-template-columns: auto 1fr; gap: 6px var(--s4); margin: var(--s3) 0 0; font-size: var(--t-small); }
.result dt { color: var(--ink-soft); }
.result dd { margin: 0; font-weight: 700; text-align: right; overflow-wrap: anywhere; }
.result .progress { height: 8px; border-radius: var(--r-full); background: var(--surface); margin-top: var(--s3); overflow: hidden; }
.result .progress i { display: block; height: 100%; width: 0; background: var(--brand); border-radius: inherit; transition: width 120ms linear; }
.result .btn { margin-top: var(--s4); }
.result img, .result canvas, .result video { max-width: 100%; height: auto; border-radius: var(--r-md); margin-top: var(--s3); }

.result--empty { background: var(--surface-2); border-style: dashed; border-color: var(--line-strong); }
.result--empty .result__label { color: var(--ink); }
.result--soon { background: var(--warn-wash); }
@supports (color: color-mix(in srgb, red, red)) { .result--soon { border: 1px solid color-mix(in srgb, var(--warn-ink) 35%, transparent);} }
.result--soon .result__label { color: var(--warn-ink); }

/* ============================================================ buttons */

.actions { display: flex; flex-wrap: wrap; gap: var(--s2); margin-top: var(--s4); align-items: center; }
.actions--primary { margin-top: var(--s4); }
.actions--primary:empty { display: none; }

.btn {
  min-height: 44px;
  display: inline-flex; align-items: center; justify-content: center; gap: var(--s2);
  padding: var(--s2) var(--s4);
  font: inherit; font-size: var(--t-small); font-weight: 650;
  cursor: pointer; text-decoration: none;
  color: var(--ink); background: var(--surface);
  border: 1.5px solid var(--line-strong); border-radius: var(--r-full);
  transition: border-color var(--fast) var(--ease), background var(--fast) var(--ease),
              color var(--fast) var(--ease), transform var(--fast) var(--ease);
}
.btn:hover { border-color: var(--brand); color: var(--brand); }
.btn:active { transform: translateY(1px); }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; transform: none; }

.btn--primary, .btn-primary {
  min-height: 52px; padding: var(--s3) var(--s6);
  background: var(--brand); border-color: var(--brand); color: var(--brand-ink);
  font-size: 1rem; font-weight: 700;
}
@supports (color: color-mix(in srgb, red, red)) { .btn--primary, .btn-primary {
  box-shadow: 0 8px 18px -10px color-mix(in srgb, var(--brand) 90%, transparent);} }
.btn--primary:hover, .btn-primary:hover {
  border-color: transparent; color: var(--brand-ink);
}
@supports (color: color-mix(in srgb, red, red)) { .btn--primary:hover, .btn-primary:hover {
  background: color-mix(in srgb, var(--brand) 86%, var(--ink));} }
.btn--primary[disabled] { box-shadow: none; background: var(--line-strong); border-color: var(--line-strong); color: var(--ink-soft); opacity: 1; }
.btn--wide { width: 100%; }
.btn--small { min-height: 40px; padding: var(--s2) var(--s4); font-size: var(--t-micro); }

.switch {
  display: inline-flex; border: 1.5px solid var(--line-strong);
  border-radius: var(--r-full); overflow: hidden; margin-left: auto;
}
.switch button {
  font: inherit; font-size: var(--t-micro); font-weight: 650;
  min-height: 40px; padding: var(--s2) var(--s4);
  border: 0; background: transparent; color: var(--ink-soft); cursor: pointer;
}
.switch button[aria-pressed="true"] { background: var(--brand); color: var(--brand-ink); }

.copy-note { color: var(--good); font-weight: 650; font-size: var(--t-small); }
.share-row { margin-top: var(--s2); }

.privacy-note {
  margin: var(--s3) 0 0; font-size: var(--t-micro); font-weight: 600; color: var(--good);
  display: flex; align-items: center; gap: var(--s2);
}
.privacy-note::before { content: ""; width: 7px; height: 7px; border-radius: var(--r-full); background: var(--good); flex: none; }
.card__output > .field__hint { margin-top: var(--s3); }

/* ============================================================ page blocks */

.block { margin-top: var(--s12); }
.block--tight { margin-top: var(--s8); }
.block > h2 { margin-top: 0; display: flex; align-items: center; gap: var(--s3); }
.block > h2::before {
  content: ""; width: 6px; height: 1.1em; border-radius: var(--r-full); background: var(--brand); flex: none;
}

.answer {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: var(--s5);
  font-size: 1.04rem; position: relative; overflow: hidden;
}
.answer::before { content: ""; position: absolute; top: 0; bottom: 0; left: 0; width: 4px; background: var(--brand); }
.answer p { margin: 0; }

.definition { font-weight: 560; font-size: 1.04rem; }

.formula {
  overflow-x: auto; padding: var(--s5);
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-lg); margin-bottom: var(--s4); text-align: center;
}
.formula math { font-size: 1.25rem; }
.formula__symbols { list-style: none; padding: 0; margin: 0; display: grid; gap: var(--s2); font-size: var(--t-small); }
.formula__symbols li { display: flex; gap: var(--s3); align-items: baseline; margin: 0; }
.formula__symbols .sym {
  font-family: var(--font-mono); font-weight: 700; color: var(--ink);
  background: var(--accent-soft); border-radius: var(--r-sm); padding: 0.05rem 0.45rem; flex: none;
}

.table-scroll { overflow-x: auto; margin-bottom: var(--s4); border: 1px solid var(--line); border-radius: var(--r-lg); background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: var(--t-small); }
th, td { text-align: left; padding: var(--s3) var(--s4); border-bottom: 1px solid var(--line); }
tr:last-child th, tr:last-child td { border-bottom: 0; }
th { color: var(--ink-soft); font-weight: 600; }
th[colspan] { background: var(--surface-2); color: var(--ink); font-weight: 700; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; font-weight: 600; }

.block > ol:not([class]) { counter-reset: step; list-style: none; padding: 0; }
.block > ol:not([class]) > li {
  counter-increment: step; position: relative; padding: var(--s1) 0 var(--s1) 2.6rem; margin-bottom: var(--s3);
}
.block > ol:not([class]) > li::before {
  content: counter(step); position: absolute; left: 0; top: 0;
  width: 1.8rem; height: 1.8rem; border-radius: var(--r-full);
  display: grid; place-items: center; font-size: var(--t-small); font-weight: 750;
  color: var(--brand); background: var(--accent-soft);
}

.faq { display: grid; gap: var(--s3); }
.faq > div { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: var(--s4) var(--s5); }
.faq h3 { margin: 0 0 var(--s2); font-size: 1.02rem; }
.faq p { margin: 0; color: var(--ink-soft); font-size: 0.97rem; }

.notice {
  font-size: var(--t-small); color: var(--ink-soft);
  background: var(--surface-2); border: 1px solid var(--line);
  border-radius: var(--r-md); padding: var(--s3) var(--s4); margin-bottom: var(--s4);
}
.notice--warn { background: var(--warn-wash); color: var(--warn-ink); }
@supports (color: color-mix(in srgb, red, red)) { .notice--warn { border-color: color-mix(in srgb, var(--warn-ink) 35%, transparent);} }
.notice.error { border-color: var(--bad); color: var(--bad); }
@supports (color: color-mix(in srgb, red, red)) { .notice.error { background: color-mix(in srgb, var(--bad) 10%, var(--surface));} }

.sources { font-size: var(--t-small); color: var(--ink-soft); }
.sources ul { list-style: none; padding: 0; }
.sources li { padding-left: var(--s4); position: relative; }
.sources li::before { content: ""; position: absolute; left: 0; top: 0.65em; width: 5px; height: 5px; border-radius: 50%; background: var(--brand); }
.reviewed { font-size: var(--t-small); color: var(--ink-faint); }

.app-block {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-xl);
  padding: var(--s6); display: grid; gap: var(--s2);
}
.app-block > h2 { margin-bottom: 0; }
.app-block p { margin: 0; color: var(--ink-soft); }
.app-badges { display: flex; flex-wrap: wrap; gap: var(--s3); align-items: center; margin-top: var(--s2); }
.app-badges img { height: 44px; width: auto; }

/* ============================================================ lists of tools */

.tool-grid { list-style: none; padding: 0; margin: 0 0 var(--s4); display: grid; gap: var(--s3); }
.tool-grid li { margin: 0; }
.tool-grid a {
  display: grid; grid-template-columns: auto 1fr; column-gap: var(--s3); align-items: center;
  height: 100%; padding: var(--s3) var(--s4);
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-md);
  text-decoration: none; color: var(--ink);
  transition: box-shadow var(--fast) var(--ease), transform var(--fast) var(--ease);
}
.tool-grid a:hover { box-shadow: 0 10px 28px -12px rgb(16 20 29 / 0.28); }
/* The tool's own colour icon (build/lib/tool-icons.mjs). */
.tool-grid .tile { display: block; line-height: 0; }
.tool-grid .ticon { width: 36px; height: 36px; }
.tool-grid .name { font-weight: 600; display: block; line-height: 1.3; font-size: 1.02rem; letter-spacing: -0.005em; }
.tool-grid .what {
  grid-column: 1 / -1; font-size: 0.8rem; color: var(--ink-soft); display: block; line-height: 1.5; margin-top: var(--s2);
}
.tool-grid .tag { font-size: 0.68rem; }

/* The groups as filters. They wrap, centred, at every width. */
.pills { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--s3); margin: 0 0 var(--s8); }
.pill {
  display: inline-flex; align-items: center; min-height: 40px; padding: 0 var(--s5); border-radius: var(--r-full);
  background: var(--surface); border: 1px solid var(--line-strong);
  color: var(--ink); text-decoration: none; font-size: 0.95rem; font-weight: 550; white-space: nowrap;
}
.pill:hover { border-color: var(--ink); }
.pill[aria-current] { background: var(--ink); border-color: var(--ink); color: var(--surface); }

/* Each tile, card and heading carries the colour of its own group. */
[data-category="finance"]     { --brand: #1d4ed8; }
[data-category="schemes"]     { --brand: #0f766e; }
[data-category="tax"]         { --brand: #b2400e; }
[data-category="calculators"] { --brand: #4338ca; }
[data-category="converters"]  { --brand: #0369a1; }
[data-category="health"]      { --brand: #be123c; }
[data-category="home"]        { --brand: #a16207; }
[data-category="student"]     { --brand: #6d28d9; }
[data-category="text"]        { --brand: #1f6f3f; }
[data-category="developer"]   { --brand: #334155; }
[data-category="files"]       { --brand: #9333ea; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) [data-category="finance"]     { --brand: #8ab4ff; }
  :root:not([data-theme="light"]) [data-category="schemes"]     { --brand: #5ed9c8; }
  :root:not([data-theme="light"]) [data-category="tax"]         { --brand: #ffa472; }
  :root:not([data-theme="light"]) [data-category="calculators"] { --brand: #a9a5ff; }
  :root:not([data-theme="light"]) [data-category="converters"]  { --brand: #7cc8f0; }
  :root:not([data-theme="light"]) [data-category="health"]      { --brand: #ff9aad; }
  :root:not([data-theme="light"]) [data-category="home"]        { --brand: #f0c04a; }
  :root:not([data-theme="light"]) [data-category="student"]     { --brand: #c3a6ff; }
  :root:not([data-theme="light"]) [data-category="text"]        { --brand: #79d39b; }
  :root:not([data-theme="light"]) [data-category="developer"]   { --brand: #aab8c9; }
  :root:not([data-theme="light"]) [data-category="files"]       { --brand: #dcaaff; }
}

/* ============================================================ home */

main.home-main {
  background:
    radial-gradient(42rem 28rem at -8% 38rem, rgb(224 65 47 / 0.07), transparent 70%),
    radial-gradient(38rem 26rem at 108% 70rem, rgb(53 103 214 / 0.07), transparent 70%),
    radial-gradient(36rem 24rem at 20% 130rem, rgb(36 152 90 / 0.06), transparent 70%);
}

.hero { padding: var(--s8) 0 var(--s6); text-align: center; }
.hero h1 { font-size: clamp(1.75rem, 1.15rem + 2.6vw, 2.9rem); font-weight: 650; letter-spacing: -0.03em; max-width: 24ch; margin: 0 auto var(--s3); }
.lead { font-size: clamp(1.02rem, 0.92rem + 0.5vw, 1.375rem); color: var(--ink-soft); margin: 0 auto var(--s6); max-width: 46rem; line-height: 1.45; }

.search { position: relative; margin: var(--s5) 0; }
.search--hero { margin: 0 auto var(--s6); max-width: 34rem; }
.search__icon { position: absolute; left: var(--s4); top: 50%; transform: translateY(-50%); color: var(--ink-faint); pointer-events: none; }
.search--hero input {
  min-height: 50px; padding-left: 3rem; font-size: 1rem; font-weight: 500;
  background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--r-full);
}
.search input { background: var(--surface); border: 1px solid var(--line-strong); }
.search-empty { text-align: center; }

.count {
  color: var(--brand); font-weight: 700; font-size: var(--t-micro);
  background: var(--accent-soft); border-radius: var(--r-full);
  padding: 0.1rem 0.55rem; white-space: nowrap;
}

/* A white band under the grid, with three reasons to trust the place. */
.band { background: var(--surface); margin-top: var(--s12); padding: var(--s12) 0; border-top: 1px solid var(--line); }
.band__title { text-align: center; margin: 0 0 var(--s8); font-size: clamp(1.4rem, 1.1rem + 1.2vw, 2rem); }
.features { list-style: none; padding: 0; margin: 0 auto; display: grid; gap: var(--s5); max-width: 66rem; }
.features li { margin: 0; }
.features a {
  display: grid; height: 100%; text-decoration: none; color: var(--ink);
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden;
  box-shadow: 0 6px 20px -14px rgb(16 20 29 / 0.3); transition: box-shadow var(--fast) var(--ease);
}
.features a:hover { box-shadow: 0 16px 34px -16px rgb(16 20 29 / 0.38); }
.feature__art {
  height: 9.5rem; display: flex; align-items: center; justify-content: center; gap: var(--s3);
  /* Mixed here, not taken from --accent-soft, which is worked out once at the root
     and so would ignore the card's own group colour. */
  color: var(--brand);
}
@supports (color: color-mix(in srgb, red, red)) { .feature__art { background: color-mix(in srgb, var(--brand) 12%, var(--surface));} }
.feature__body { padding: var(--s5) var(--s5) 0; display: grid; gap: var(--s2); }
.feature__name { font-size: 1.15rem; font-weight: 650; }
.feature__text { font-size: var(--t-small); color: var(--ink-soft); line-height: 1.6; }
.feature__go { justify-self: end; padding: var(--s3) var(--s5) var(--s5); color: var(--ink); }

.trust { text-align: center; padding: var(--s16) 0 var(--s16); background: var(--surface); }
.trust h2 { font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.3rem); margin: 0 auto var(--s4); max-width: 26ch; }
.trust p { color: var(--ink-soft); max-width: 44rem; margin: 0 auto var(--s8); font-size: 1.05rem; }
.trust__marks { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; justify-content: center; gap: var(--s4) var(--s10); }
.trust__marks li { margin: 0; display: inline-flex; align-items: center; gap: var(--s2); font-weight: 650; font-size: var(--t-small); color: var(--ink-soft); }
.trust__marks .icon { color: var(--ink); }

/* ============================================================ file lists */

.drop { border: 2px dashed var(--line-strong); border-radius: var(--r-lg); padding: var(--s8) var(--s4); text-align: center; color: var(--ink-soft); background: var(--surface-2); }
.file-list { list-style: none; padding: 0; margin: var(--s4) 0 0; display: grid; gap: var(--s2); font-size: var(--t-small); }
.file-list li { display: flex; justify-content: space-between; gap: var(--s3); align-items: center; border: 1px solid var(--line); border-radius: var(--r-md); padding: var(--s3) var(--s4); margin: 0; }
progress { width: 100%; height: 10px; }

/* ============================================================ footer */

.site-foot {
  background: #2b2b33; color: #d4d4dc; padding-top: var(--s12); padding-bottom: var(--s6);
  padding-bottom: max(var(--s6), env(safe-area-inset-bottom));
  font-size: var(--t-small);
}
main + .site-foot { margin-top: 0; }
.site-foot h2 { font-size: var(--t-small); margin: 0 0 var(--s4); color: #ffffff; letter-spacing: 0.04em; text-transform: uppercase; font-weight: 650; }
.site-foot ul { list-style: none; padding: 0; margin: 0 0 var(--s6); display: grid; gap: var(--s3); }
.site-foot li { margin: 0; }
.site-foot a { color: #d4d4dc; text-decoration: none; }
.site-foot a:hover { color: #ffffff; text-decoration: underline; }
.site-foot :focus-visible { outline-color: #ffffff; }
.foot-cols { display: grid; gap: var(--s5); grid-template-columns: 1fr 1fr; }
.foot-bottom { border-top: 1px solid #45454f; padding-top: var(--s5); display: grid; gap: var(--s2); }
.foot-note, .foot-copy { color: #a9a9b3; margin: 0; font-size: var(--t-micro); }

/* ============================================================ wider screens */

@media (min-width: 40rem) {
  :root { --gutter: 1.5rem; }
  .card { padding: var(--s6); }
  .tool-grid { grid-template-columns: 1fr 1fr; gap: var(--s4); }
  /* Cards stand up: icon, then name, then what it does. */
  .tool-grid--cards a { grid-template-columns: 1fr; align-content: start; align-items: start; padding: var(--s6); min-height: 14.5rem; border-radius: 12px; }
  .tool-grid--cards .ticon { width: 42px; height: 42px; }
  .tool-grid--cards .tile { margin-bottom: var(--s5); }
  .tool-grid--cards .name { font-size: 1.25rem; font-weight: 550; letter-spacing: -0.01em; }
  .tool-grid--cards .what { font-size: 0.8125rem; line-height: 1.45; margin-top: var(--s3); letter-spacing: 0.005em; }
  .features { grid-template-columns: repeat(3, 1fr); }
  .hero { padding: var(--s12) 0 var(--s6); }
  .foot-bottom { grid-template-columns: 1fr auto; align-items: center; }
}

@media (min-width: 56rem) {
  :root { --page-w: 64rem; }
  .site-head__row { gap: var(--s8); }
  .site-nav { display: flex; gap: var(--s8); order: 1; }
  .mega { order: 2; }
  .hsearch { order: 3; }
  .menu { order: 4; }
  /* The inputs beside the answer: nothing to scroll between changing a number
     and seeing what it did. */
  .card--tool { grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: var(--s8); align-items: start; padding: var(--s8); }
  .card__output { position: sticky; top: 5rem; }
  .tool-grid { grid-template-columns: repeat(3, 1fr); }
  .foot-cols { grid-template-columns: repeat(4, 1fr); }
  /* Files on the left, the options and the action in a panel on the right. */
  /* The first row is only as tall as the button; the tall side panel's height goes
     to the file row, so the tiles sit right under the button in every browser. */
  .workspace.is-staged .workspace__form { grid-template-columns: minmax(0, 1fr) 22rem; grid-template-rows: auto 1fr; grid-template-areas: "pick side" "files side"; align-items: start; }
  .workspace__side { position: sticky; top: 76px; }
}

/* A file tool that keeps the plain card stays one centred column. */
.card--file { max-width: 46rem; margin-left: auto; margin-right: auto; grid-template-columns: 1fr !important; }
.card--file .card__output { position: static; }

@media (min-width: 72rem) {
  :root { --page-w: 76rem; }
  .tool-grid--cards { grid-template-columns: repeat(5, 1fr); gap: var(--s4); }
}

/* Below the wide layout: the menu button moves to the far left, and a staged
   file tool keeps its action button pinned to the bottom of the screen. */
@media (max-width: 55.99rem) {
  .mega { order: -1; }
  .mega > summary { min-height: 44px; width: 44px; justify-content: center; }
  .mega__burger { display: inline-flex; }
  .mega__label, .mega__chev { display: none; }
  .mega__panel { grid-template-columns: 1fr 1fr; gap: var(--s5); padding: var(--s4) var(--gutter) var(--s8); max-height: calc(100vh - 60px); }
  .hsearch__box { position: fixed; left: var(--s2); right: var(--s2); top: 7px; transform: none; width: auto; }
  .workspace.is-staged .actions--primary {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 15; margin: 0;
    padding: var(--s3) var(--gutter) max(var(--s3), env(safe-area-inset-bottom));
    background: var(--surface); border-top: 1px solid var(--line);
    box-shadow: 0 -10px 24px -14px rgb(16 20 29 / 0.3);
  }
  body.has-staged { padding-bottom: 5.5rem; }
  .workspace.is-staged .workspace__pick { justify-items: center; }
}

/* Phones: the group pills are one row you swipe sideways, not five wrapped rows. */
@media (max-width: 39.99rem) {
  .pills {
    flex-wrap: nowrap; justify-content: flex-start;
    overflow-x: auto; overscroll-behavior-x: contain; -webkit-overflow-scrolling: touch;
    scroll-snap-type: x proximity; scroll-padding-left: var(--gutter); scroll-padding-right: var(--gutter); scrollbar-width: none;
    margin-left: calc(-1 * var(--gutter)); margin-right: calc(-1 * var(--gutter)); padding: var(--s1) var(--gutter);
    /* A fade at the right edge says there is more to swipe to. */
    -webkit-mask-image: linear-gradient(to right, #000 calc(100% - 2rem), transparent);
            mask-image: linear-gradient(to right, #000 calc(100% - 2rem), transparent);
  }
  .pills::-webkit-scrollbar { display: none; }
  .pill { flex: none; scroll-snap-align: start; }
}

/* A phone. */
@media (max-width: 30rem) {
  .brand { font-size: 1.1rem; }
  .mega__panel { grid-template-columns: 1fr; }
  .tool__head { margin: var(--s6) auto var(--s6); }
  .chips li { white-space: nowrap; }
  .actions .btn { flex: 1 1 auto; }
  .switch { margin-left: 0; width: 100%; }
  .switch button { flex: 1; }
  /* A date box cannot shrink below its day, month and year; give it the row. */
  .field--date { grid-column: 1 / -1; }
  .dropzone__button { min-height: 72px; padding: 0 var(--s6); width: 100%; }
  .workspace__files { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s3); }
  .hero { padding: var(--s6) 0 var(--s4); }
  .pills { gap: var(--s2); }
  .pill { min-height: 36px; padding: 0 var(--s4); font-size: 0.9rem; }
  .features a { grid-template-columns: 1fr; }
  .feature__art { height: 7rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .tool-grid a:hover { box-shadow: none; }
}

/* ============================================================ older browsers */

/* Spacing in rows. Flex "gap" arrived in Chrome 84 and Safari 14.1; before that
   the rows below ran together ("EMIINCOME TAX"). aspect-ratio arrived soon
   after (Chrome 88, Safari 15), so a browser without it gets margins instead,
   and gap is zeroed so the few that have one and not the other are not doubled. */
@supports not (aspect-ratio: 1 / 1) {
  .site-head__row, .brand, .site-nav, .site-nav a, .mega > summary, .site-nav .navdrop__panel a, .mega__head a,
  .hsearch__field, .menu__groups a, .crumbs ol, .chips, .chips li, .dropzone__button, .actions, .btn,
  .privacy-note, .block > h2, .formula__symbols li, .app-badges, .pills, .feature__art, .trust__marks,
  .trust__marks li, .file-list li, .result__rows li { gap: 0; }
  .site-head__row > * + *, .site-nav > * + * { margin-left: var(--s6); }
  .brand > * + *, .site-nav a > * + *, .mega > summary > * + *, .hsearch__field > * + *, .chips li > * + *,
  .btn > * + *, .dropzone__button > * + *, .privacy-note::before, .trust__marks li > * + *,
  .site-nav .navdrop__panel a > * + *, .menu__groups a > * + *, .mega__head a > * + * { margin-left: var(--s2); }
  .privacy-note::before { margin: 0 var(--s2) 0 0; }
  .block > h2::before { margin-right: var(--s3); }
  .chips > *, .pills > *, .actions > *, .app-badges > *, .trust__marks > * { margin: 0 var(--s2) var(--s2) 0; }
  .crumbs li + li::before { margin-left: var(--s2); }
  .formula__symbols li > * + *, .file-list li > * + * { margin-left: var(--s3); }
  .file-tile__thumb { min-height: 9rem; }
}

/* color-mix() arrived in Chrome 111 (so not on Windows 7 or 8.1, which stop at
   109) and Safari 16.2. Without it the tints below would vanish; plain greys keep
   the panels visible. */
@supports not (color: color-mix(in srgb, red, red)) {
  :root, [data-category], [data-tool] {
    --accent-wash: #f7f7fb; --accent-soft: #ededf4; --accent-edge: #d9d9e3; --accent-glow: #f5f5fa;
  }
  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]), :root:not([data-theme="light"]) [data-category], :root:not([data-theme="light"])[data-tool] {
      --accent-wash: #1c2029; --accent-soft: #252a35; --accent-edge: #343a47; --accent-glow: #12151c;
    }
  }
}

@media print {
  .site-head, .site-foot, .actions, .switch, .skip, .crumbs, .chips { display: none; }
  body { background: #fff; color: #000; }
  .card, .result, .faq > div { box-shadow: none; border-color: #999; }
}

/* Generated by build/lib/tool-icons.mjs: each tool page in its icon's colour. */
[data-tool="emi-calculator"]{--brand:#3567d6}
[data-tool="home-loan-emi-calculator"]{--brand:#1c7ab5}
[data-tool="car-loan-emi-calculator"]{--brand:#d73e2d}
[data-tool="personal-loan-emi-calculator"]{--brand:#8e4cc4}
[data-tool="loan-eligibility-calculator"]{--brand:#20864f}
[data-tool="loan-prepayment-calculator"]{--brand:#0f837c}
[data-tool="sip-calculator"]{--brand:#20864f}
[data-tool="lumpsum-calculator"]{--brand:#986c04}
[data-tool="step-up-sip-calculator"]{--brand:#568125}
[data-tool="swp-calculator"]{--brand:#bd5523}
[data-tool="goal-sip-calculator"]{--brand:#d73e2d}
[data-tool="cagr-calculator"]{--brand:#3567d6}
[data-tool="simple-interest-calculator"]{--brand:#0f837c}
[data-tool="compound-interest-calculator"]{--brand:#5751cf}
[data-tool="fd-calculator"]{--brand:#2b4f8f}
[data-tool="rd-calculator"]{--brand:#1c7ab5}
[data-tool="credit-card-payoff-calculator"]{--brand:#cd3c73}
[data-tool="inflation-calculator"]{--brand:#bd5523}
[data-tool="retirement-corpus-calculator"]{--brand:#986c04}
[data-tool="emergency-fund-calculator"]{--brand:#d73e2d}
[data-tool="net-worth-calculator"]{--brand:#20864f}
[data-tool="rent-vs-buy-calculator"]{--brand:#bd5523}
[data-tool="brokerage-calculator"]{--brand:#2b4f8f}
[data-tool="ppf-calculator"]{--brand:#0f837c}
[data-tool="nps-calculator"]{--brand:#5751cf}
[data-tool="sukanya-samriddhi-calculator"]{--brand:#cd3c73}
[data-tool="epf-calculator"]{--brand:#3567d6}
[data-tool="nsc-calculator"]{--brand:#20864f}
[data-tool="kisan-vikas-patra-calculator"]{--brand:#568125}
[data-tool="senior-citizen-savings-scheme-calculator"]{--brand:#986c04}
[data-tool="income-tax-calculator"]{--brand:#d73e2d}
[data-tool="gst-calculator"]{--brand:#bd5523}
[data-tool="hra-exemption-calculator"]{--brand:#8e4cc4}
[data-tool="gratuity-calculator"]{--brand:#20864f}
[data-tool="tds-calculator"]{--brand:#2b4f8f}
[data-tool="capital-gains-tax-calculator"]{--brand:#0f837c}
[data-tool="gst-number-verification"]{--brand:#3567d6}
[data-tool="percentage-calculator"]{--brand:#5751cf}
[data-tool="age-calculator"]{--brand:#cd3c73}
[data-tool="date-difference-calculator"]{--brand:#1c7ab5}
[data-tool="average-calculator"]{--brand:#20864f}
[data-tool="fraction-calculator"]{--brand:#bd5523}
[data-tool="ratio-calculator"]{--brand:#8e4cc4}
[data-tool="discount-calculator"]{--brand:#d73e2d}
[data-tool="bill-split-calculator"]{--brand:#0f837c}
[data-tool="unit-converter"]{--brand:#3567d6}
[data-tool="temperature-converter"]{--brand:#d73e2d}
[data-tool="data-storage-converter"]{--brand:#1c7ab5}
[data-tool="time-zone-converter"]{--brand:#0f837c}
[data-tool="currency-converter"]{--brand:#20864f}
[data-tool="ifsc-code-finder"]{--brand:#2b4f8f}
[data-tool="pincode-finder"]{--brand:#cd3c73}
[data-tool="vehicle-rto-lookup"]{--brand:#986c04}
[data-tool="bmi-calculator"]{--brand:#20864f}
[data-tool="bmr-calculator"]{--brand:#bd5523}
[data-tool="calorie-calculator"]{--brand:#bd5523}
[data-tool="body-fat-calculator"]{--brand:#8e4cc4}
[data-tool="ideal-weight-calculator"]{--brand:#0f837c}
[data-tool="water-intake-calculator"]{--brand:#1c7ab5}
[data-tool="target-heart-rate-calculator"]{--brand:#d73e2d}
[data-tool="ovulation-calculator"]{--brand:#cd3c73}
[data-tool="period-date-calculator"]{--brand:#cd3c73}
[data-tool="pregnancy-due-date-calculator"]{--brand:#a14c90}
[data-tool="paint-calculator"]{--brand:#8e4cc4}
[data-tool="tile-calculator"]{--brand:#986c04}
[data-tool="brick-calculator"]{--brand:#d73e2d}
[data-tool="electricity-bill-calculator"]{--brand:#986c04}
[data-tool="rent-split-calculator"]{--brand:#20864f}
[data-tool="cgpa-to-percentage-calculator"]{--brand:#5751cf}
[data-tool="percentage-to-cgpa-calculator"]{--brand:#3567d6}
[data-tool="marks-percentage-calculator"]{--brand:#20864f}
[data-tool="attendance-calculator"]{--brand:#0f837c}
[data-tool="exam-countdown-calculator"]{--brand:#d73e2d}
[data-tool="word-counter"]{--brand:#2b4f8f}
[data-tool="case-converter"]{--brand:#8e4cc4}
[data-tool="text-cleaner"]{--brand:#0f837c}
[data-tool="duplicate-line-remover"]{--brand:#bd5523}
[data-tool="text-compare"]{--brand:#3567d6}
[data-tool="lorem-ipsum-generator"]{--brand:#20864f}
[data-tool="json-formatter"]{--brand:#986c04}
[data-tool="base64-encoder-decoder"]{--brand:#0f837c}
[data-tool="hash-generator"]{--brand:#5751cf}
[data-tool="uuid-generator"]{--brand:#8e4cc4}
[data-tool="password-generator"]{--brand:#d73e2d}
[data-tool="color-converter"]{--brand:#d73e2d}
[data-tool="jwt-decoder"]{--brand:#cd3c73}
[data-tool="unix-timestamp-converter"]{--brand:#2b4f8f}
[data-tool="merge-pdf"]{--brand:#d73e2d}
[data-tool="split-pdf"]{--brand:#bd5523}
[data-tool="compress-pdf"]{--brand:#20864f}
[data-tool="image-to-pdf"]{--brand:#986c04}
[data-tool="scan-to-pdf"]{--brand:#bd5523}
[data-tool="image-compressor"]{--brand:#568125}
[data-tool="qr-code-scanner"]{--brand:#2b4f8f}
@media (prefers-color-scheme: dark){
:root:not([data-theme="light"])[data-tool="emi-calculator"]{--brand:#557fdd}
:root:not([data-theme="light"])[data-tool="home-loan-emi-calculator"]{--brand:#238aca}
:root:not([data-theme="light"])[data-tool="car-loan-emi-calculator"]{--brand:#e25040}
:root:not([data-theme="light"])[data-tool="personal-loan-emi-calculator"]{--brand:#a26ccf}
:root:not([data-theme="light"])[data-tool="loan-eligibility-calculator"]{--brand:#24985a}
:root:not([data-theme="light"])[data-tool="loan-prepayment-calculator"]{--brand:#11928a}
:root:not([data-theme="light"])[data-tool="sip-calculator"]{--brand:#24985a}
:root:not([data-theme="light"])[data-tool="lumpsum-calculator"]{--brand:#d99a06}
:root:not([data-theme="light"])[data-tool="step-up-sip-calculator"]{--brand:#6ea62f}
:root:not([data-theme="light"])[data-tool="swp-calculator"]{--brand:#ec6a2c}
:root:not([data-theme="light"])[data-tool="goal-sip-calculator"]{--brand:#e25040}
:root:not([data-theme="light"])[data-tool="cagr-calculator"]{--brand:#557fdd}
:root:not([data-theme="light"])[data-tool="simple-interest-calculator"]{--brand:#11928a}
:root:not([data-theme="light"])[data-tool="compound-interest-calculator"]{--brand:#7c77da}
:root:not([data-theme="light"])[data-tool="fd-calculator"]{--brand:#6b84b1}
:root:not([data-theme="light"])[data-tool="rd-calculator"]{--brand:#238aca}
:root:not([data-theme="light"])[data-tool="credit-card-payoff-calculator"]{--brand:#da5286}
:root:not([data-theme="light"])[data-tool="inflation-calculator"]{--brand:#ec6a2c}
:root:not([data-theme="light"])[data-tool="retirement-corpus-calculator"]{--brand:#d99a06}
:root:not([data-theme="light"])[data-tool="emergency-fund-calculator"]{--brand:#e25040}
:root:not([data-theme="light"])[data-tool="net-worth-calculator"]{--brand:#24985a}
:root:not([data-theme="light"])[data-tool="rent-vs-buy-calculator"]{--brand:#ec6a2c}
:root:not([data-theme="light"])[data-tool="brokerage-calculator"]{--brand:#6b84b1}
:root:not([data-theme="light"])[data-tool="ppf-calculator"]{--brand:#11928a}
:root:not([data-theme="light"])[data-tool="nps-calculator"]{--brand:#7c77da}
:root:not([data-theme="light"])[data-tool="sukanya-samriddhi-calculator"]{--brand:#da5286}
:root:not([data-theme="light"])[data-tool="epf-calculator"]{--brand:#557fdd}
:root:not([data-theme="light"])[data-tool="nsc-calculator"]{--brand:#24985a}
:root:not([data-theme="light"])[data-tool="kisan-vikas-patra-calculator"]{--brand:#6ea62f}
:root:not([data-theme="light"])[data-tool="senior-citizen-savings-scheme-calculator"]{--brand:#d99a06}
:root:not([data-theme="light"])[data-tool="income-tax-calculator"]{--brand:#e25040}
:root:not([data-theme="light"])[data-tool="gst-calculator"]{--brand:#ec6a2c}
:root:not([data-theme="light"])[data-tool="hra-exemption-calculator"]{--brand:#a26ccf}
:root:not([data-theme="light"])[data-tool="gratuity-calculator"]{--brand:#24985a}
:root:not([data-theme="light"])[data-tool="tds-calculator"]{--brand:#6b84b1}
:root:not([data-theme="light"])[data-tool="capital-gains-tax-calculator"]{--brand:#11928a}
:root:not([data-theme="light"])[data-tool="gst-number-verification"]{--brand:#557fdd}
:root:not([data-theme="light"])[data-tool="percentage-calculator"]{--brand:#7c77da}
:root:not([data-theme="light"])[data-tool="age-calculator"]{--brand:#da5286}
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