/* =========================================================
   freeonlinecalculator.xyz — design tokens
   Subject: instant, trustworthy everyday calculators.
   The calculator itself is the hero — no marketing fluff.
   Visual motif: ruler/tick-mark ticks (calculator markings)
   used as a structural device, not decoration.
   ========================================================= */

:root {
  /* Color */
  --ink: #1B1F27;
  --ink-soft: #4A5164;
  --paper: #F6F7FB;
  --panel: #FFFFFF;
  --line: #DFE3ED;
  --amber: #FF7A1A;      /* primary action — "compute" */
  --amber-ink: #7A3400;
  --meadow: #1E8A5F;     /* valid / result state */
  --meadow-bg: #E9F6EF;
  --violet: #4B3F72;     /* category accent, used sparingly */

  /* Type */
  --display: 'Space Grotesk', 'Arial Narrow', sans-serif;
  --body: 'IBM Plex Sans', system-ui, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, monospace;

  --radius: 3px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.55;
}

h1, h2, h3, .num {
  font-family: var(--display);
  color: var(--ink);
  margin: 0 0 0.4em;
  font-weight: 600;
  letter-spacing: -0.01em;
}

h1 { font-size: 2rem; line-height: 1.15; }
h2 { font-size: 1.35rem; }
p { max-width: 68ch; color: var(--ink-soft); }

a { color: var(--violet); }

/* ---------- tick-rule motif ---------- */
.ticks {
  height: 10px;
  background-image: repeating-linear-gradient(
    to right,
    var(--line) 0, var(--line) 1px,
    transparent 1px, transparent 12px
  );
  background-position: bottom;
  background-repeat: repeat-x;
  background-size: 100% 6px;
}

/* ---------- shell ---------- */
.shell { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

header.site {
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}
header.site .row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 24px;
}
.logo {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ink);
  text-decoration: none;
  display: flex; align-items: baseline; gap: 2px;
}
.logo .dot { color: var(--amber); }

nav.cats { display: flex; gap: 20px; font-size: 0.92rem; }
nav.cats a { color: var(--ink-soft); text-decoration: none; }
nav.cats a:hover { color: var(--ink); }
.auth { display: inline-flex; gap: 12px; align-items: center; margin-left: 4px; padding-left: 16px; border-left: 1px solid var(--line); }
.auth a { color: var(--ink); font-weight: 500; }
.user-chip { display: inline-flex; align-items: center; gap: 6px; color: var(--ink-soft); font-size: .84rem; }
.user-chip img { width: 22px; height: 22px; border-radius: 50%; }
@media (max-width: 700px) {
  header.site .row { align-items: flex-start; gap: 14px; }
  nav.cats { flex-wrap: wrap; justify-content: flex-end; gap: 8px 12px; }
  .auth { margin-left: 0; padding-left: 0; border-left: 0; }
}

/* ---------- search ---------- */
.search-wrap { padding: 56px 24px 40px; text-align: left; }
.search-wrap h1 { max-width: 20ch; }
.search-box {
  margin-top: 22px;
  display: flex;
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  background: var(--panel);
  max-width: 560px;
}
.search-box input {
  flex: 1; border: 0; background: transparent; padding: 14px 16px;
  font-family: var(--body); font-size: 1rem; color: var(--ink);
}
.search-box input:focus { outline: 2px solid var(--amber); outline-offset: -2px; }
.search-box button {
  border: 0; background: var(--ink); color: #fff; padding: 0 20px;
  font-family: var(--display); font-weight: 600; cursor: pointer;
}
.search-box button:hover { background: var(--amber-ink); }

/* ---------- category grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin: 0 24px 64px;
  max-width: 1032px;
  margin-left: auto; margin-right: auto;
}
.tile {
  background: var(--panel);
  padding: 22px 20px;
  text-decoration: none;
  color: var(--ink);
  display: block;
}
.tile:hover { background: #FFF7EF; }
.tile .kicker {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.02em;
  color: var(--violet); text-transform: lowercase; margin-bottom: 6px;
}
.tile h3 { font-size: 1.02rem; margin-bottom: 4px; }
.tile p { font-size: 0.86rem; margin: 0; }

/* ---------- calculator page layout ---------- */
.calc-page { padding: 32px 24px 64px; }
.calc-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 28px;
  align-items: start;
}
@media (max-width: 900px) {
  .calc-layout { grid-template-columns: 1fr; }
  .side { display: none; }
}

.side h3 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-soft); }
.side ul { list-style: none; padding: 0; margin: 0; font-size: 0.9rem; }
.side li { margin-bottom: 10px; }
.side a { color: var(--ink); text-decoration: none; }
.side a:hover { color: var(--amber-ink); }

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
}

.field { margin-bottom: 18px; }
.field label {
  display: block; font-size: 0.85rem; color: var(--ink-soft); margin-bottom: 6px;
}
.field input, .field select {
  width: 100%; padding: 11px 12px; font-size: 1rem; font-family: var(--mono);
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper);
}
.field input:focus, .field select:focus { outline: 2px solid var(--amber); border-color: var(--amber); }

.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

button.compute {
  background: var(--amber); color: #1B1200; border: 0;
  font-family: var(--display); font-weight: 700; font-size: 1rem;
  padding: 13px 24px; border-radius: var(--radius); cursor: pointer;
  margin-top: 6px;
}
button.compute:hover { background: #E86A0E; }

.result {
  margin-top: 22px; padding: 18px 20px;
  background: var(--meadow-bg); border: 1px solid var(--meadow);
  border-radius: var(--radius); display: none;
}
.result.show { display: block; }
.result .big { font-family: var(--display); font-size: 1.9rem; font-weight: 700; color: var(--meadow); }
.result .label { font-size: 0.82rem; color: var(--ink-soft); }
.result .breakdown { margin-top: 10px; font-size: 0.88rem; color: var(--ink-soft); }
.result .breakdown div { display: flex; justify-content: space-between; padding: 3px 0; }

.adslot { display: none; }

.content-below { margin-top: 48px; max-width: 72ch; }
.content-below h2 { margin-top: 2em; }
.faq dt { font-family: var(--display); font-weight: 600; margin-top: 1.1em; }
.faq dd { margin: 0.3em 0 0; color: var(--ink-soft); }

footer.site {
  border-top: 1px solid var(--line);
  padding: 28px 24px; text-align: center;
  font-size: 0.82rem; color: var(--ink-soft);
}

/* accessibility */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--amber); outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

/* Homepage and trust surfaces */
.shell-wide { max-width: 1180px; margin: 0 auto; padding-left: 28px; padding-right: 28px; }
.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; }
.logo-mark { display: inline-grid; place-items: center; width: 23px; height: 23px; margin-right: 5px; background: var(--amber); color: var(--ink); line-height: 1; }
.button { display: inline-flex; align-items: center; justify-content: center; border: 0; border-radius: 4px; padding: 13px 18px; background: var(--amber); color: var(--ink); font-family: var(--display); font-weight: 700; text-decoration: none; cursor: pointer; }
.button:hover { background: #e8a52e; color: var(--ink); }.button-small { padding: 9px 13px; font-size: .84rem; }
.hero { min-height: 550px; display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 40px; padding-top: 70px; padding-bottom: 70px; }
.hero h1 { max-width: 11ch; font-size: clamp(3rem, 6vw, 5.5rem); line-height: .98; letter-spacing: -.045em; }.hero-lede { max-width: 49ch; font-size: 1.1rem; margin: 22px 0 25px; }.hero-search { max-width: 600px; margin: 0; }.hero-search .button { border-radius: 0; white-space: nowrap; }.trust-row { display: flex; flex-wrap: wrap; gap: 17px; margin-top: 18px; color: var(--ink-soft); font-size: .8rem; }.hero-image { min-height: 420px; background: linear-gradient(120deg, rgba(17,35,63,.08), rgba(17,35,63,.35)), url('https://images.unsplash.com/photo-1554224155-6726b3ff858f?auto=format&fit=crop&w=1200&q=82') center/cover; box-shadow: 18px 18px 0 var(--amber); }
.section { padding-top: 72px; padding-bottom: 72px; }.section-tint { max-width: none; background: #EAF0F6; padding-left: max(28px, calc((100% - 1124px)/2)); padding-right: max(28px, calc((100% - 1124px)/2)); }.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 26px; }.section-heading h2 { font-size: 2rem; margin: 0; }.text-link { color: var(--ink); font-weight: 600; }.app-grid { display: grid; grid-template-columns: 1.25fr 1fr 1fr; gap: 14px; }.compact-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); max-width: 790px; }.app-card { display: flex; flex-direction: column; min-height: 230px; padding: 25px; background: var(--panel); border: 1px solid var(--line); color: var(--ink); text-decoration: none; transition: transform .2s, box-shadow .2s; }.app-card:hover { transform: translateY(-4px); box-shadow: 6px 6px 0 var(--amber); }.app-card-featured { background: var(--ink); color: #fff; }.app-card-featured h3,.app-card-featured p { color: #fff; }.app-icon { display: grid; place-items: center; width: 42px; height: 42px; margin-bottom: 25px; font-family: var(--display); font-size: 1.4rem; font-weight: 700; }.icon-finance { background: #FFE1A2; }.icon-growth { background: #C9E8DC; }.icon-health { background: #FFD5D0; }.icon-math { background: #D9D1F5; }.icon-everyday { background: #BFE0F1; }.app-card .kicker { margin-bottom: 5px; }.app-card h3 { font-size: 1.35rem; margin-bottom: 7px; }.app-card p { margin-top: 0; font-size: .9rem; }.card-cta { margin-top: auto; color: var(--amber); font-size: .84rem; font-weight: 700; }.popular-list { border-top: 1px solid var(--line); }.popular-list a { display: grid; grid-template-columns: 70px 1fr auto; align-items: center; gap: 15px; padding: 17px 0; border-bottom: 1px solid var(--line); color: var(--ink); text-decoration: none; }.popular-list strong { color: var(--amber-ink); font-family: var(--mono); }.popular-list b,.popular-list small { display: block; }.popular-list small { color: var(--ink-soft); }.arrow { font-size: 1.3rem; }.quote-band { padding: 75px 0; background: var(--ink); color: #fff; }.quote-band .eyebrow { color: var(--amber); }.quote-band blockquote { max-width: 850px; margin: 0 0 18px; font-family: var(--display); font-size: clamp(1.8rem, 4vw, 3.2rem); line-height: 1.08; }.quote-band cite { color: #B8C7DA; font-style: normal; }.article-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }.article-grid article h3 { font-size: 1.4rem; }.article-grid article h3 a { color: var(--ink); }.article-grid article p { margin: 5px 0; }.article-image { height: 190px; margin-bottom: 20px; background-size: cover; background-position: center; }.image-money { background-image: url('https://images.unsplash.com/photo-1554224154-26032ffc0d07?auto=format&fit=crop&w=900&q=80'); }.image-home { background-image: url('https://images.unsplash.com/photo-1560518883-ce09059eeffa?auto=format&fit=crop&w=900&q=80'); }.site-footer { background: #EAF0F6; text-align: left; }.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; padding-top: 48px; padding-bottom: 48px; }.footer-grid > div { display: flex; flex-direction: column; gap: 7px; }.footer-grid b { margin-bottom: 7px; }.footer-grid a:not(.logo) { color: var(--ink-soft); text-decoration: none; font-size: .9rem; }.footer-bottom { display: flex; justify-content: space-between; gap: 15px; padding-top: 16px; padding-bottom: 20px; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: .76rem; }.cookie-banner { position: fixed; right: 18px; bottom: 18px; z-index: 5; display: flex; align-items: center; gap: 18px; max-width: 560px; padding: 15px 17px; background: var(--ink); color: #fff; box-shadow: 0 8px 30px rgba(17,35,63,.22); }.cookie-banner p { margin: 0; color: #fff; font-size: .83rem; }.cookie-banner a { color: var(--amber); }
@media (max-width: 760px) { .hero { grid-template-columns: 1fr; padding-top: 45px; }.hero-image { min-height: 230px; box-shadow: 10px 10px 0 var(--amber); }.app-grid,.compact-grid,.article-grid { grid-template-columns: 1fr; }.section-heading { align-items: start; flex-direction: column; }.footer-grid { grid-template-columns: 1fr 1fr; }.footer-bottom { flex-direction: column; }.cookie-banner { left: 12px; right: 12px; bottom: 12px; align-items: end; } }
.prose { max-width: 820px; }.prose h1 { font-size: clamp(2.3rem, 5vw, 4rem); margin-bottom: 22px; }.prose h2 { margin-top: 2em; }.prose p { max-width: 70ch; }.article-intro { font-size: 1.2rem; }.prose .article-image { margin: 30px 0; }.export-panel { max-width: 720px; margin-top: 30px; }.button-row { display: flex; flex-wrap: wrap; gap: 10px; }
.social-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 14px; }.social-link { display: inline-flex; align-items: center; gap: 7px; color: var(--ink-soft); text-decoration: none; font-size: .84rem; }.social-link span { display: inline-grid; place-items: center; width: 22px; height: 22px; border: 1px solid var(--ink-soft); border-radius: 50%; font-family: var(--display); font-size: .7rem; font-weight: 700; }.social-link:hover { color: var(--ink); }.contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: start; }.contact-layout h1 { max-width: 12ch; font-size: clamp(2.5rem, 5vw, 4.5rem); }.contact-form { box-shadow: 8px 8px 0 var(--amber); }.contact-form textarea { width: 100%; padding: 11px 12px; font: inherit; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); resize: vertical; }.contact-form textarea:focus { outline: 2px solid var(--amber); border-color: var(--amber); }.form-note { margin: 14px 0 0; font-size: .78rem; }.contact-notes { margin-top: 35px; border-top: 1px solid var(--line); }.contact-notes div { display: grid; grid-template-columns: 130px 1fr; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); }.contact-notes span { color: var(--ink-soft); font-size: .9rem; }
.social-icon { display: inline-grid; place-items: center; width: 24px; height: 24px; border: 1px solid var(--ink-soft); border-radius: 50%; color: var(--ink) !important; font: 700 .7rem var(--display); text-decoration: none; }
@media (max-width: 760px) { .contact-layout { grid-template-columns: 1fr; gap: 35px; } }
@media print { header.site, footer.site, .button-row { display: none; }.section { padding: 0; }.panel { border: 0; } }
.auth-page { min-height: 100vh; background: #071329; color: #fff; }.auth-shell { min-height: 100vh; display: grid; grid-template-columns: minmax(320px, .86fr) 1.14fr; }.auth-intro { display: flex; flex-direction: column; justify-content: space-between; padding: 38px clamp(28px, 6vw, 90px); }.auth-intro .logo { color: #fff; }.auth-intro h1 { max-width: 8ch; margin: 20px 0; color: #fff; font-size: clamp(2.7rem, 5vw, 5.3rem); line-height: .98; }.auth-intro p:not(.eyebrow) { max-width: 43ch; color: #B9C7DB; }.auth-points { display: grid; gap: 10px; margin-top: 28px; color: #E5EEF9; font-size: .9rem; }.auth-button { width: max-content; margin-top: 30px; }.back-link { color: #B9C7DB; text-decoration: none; font-size: .88rem; }.auth-visual { position: relative; display: grid; place-items: center; overflow: hidden; background: radial-gradient(circle at center, #1A4670 0, #0B1F3A 36%, #061125 75%); }.auth-visual:before,.auth-visual:after { position: absolute; content: ''; width: 150%; height: 1px; background: rgba(101,220,255,.16); transform: rotate(-28deg); box-shadow: 0 70px rgba(101,220,255,.08), 0 -70px rgba(101,220,255,.08); }.auth-visual:after { transform: rotate(28deg); }.holo-scene { position: relative; width: min(540px, 75vw); height: 540px; display: grid; place-items: center; perspective: 900px; }.holo-ring { position: absolute; border: 1px solid rgba(85,225,255,.7); border-radius: 50%; transform: rotateX(68deg); box-shadow: 0 0 22px rgba(50,205,255,.25), inset 0 0 22px rgba(50,205,255,.13); }.ring-one { width: 480px; height: 180px; }.ring-two { width: 350px; height: 130px; transform: rotateX(68deg) translateZ(80px); border-color: rgba(182,255,153,.55); }.holo-panel { position: relative; z-index: 1; width: min(390px, 70vw); padding: 22px; color: #BFF5FF; background: linear-gradient(145deg, rgba(21,93,132,.48), rgba(9,20,48,.72)); border: 1px solid rgba(120,235,255,.72); box-shadow: 0 0 35px rgba(41,200,255,.28), inset 0 0 25px rgba(91,228,255,.1); transform: rotateX(8deg) rotateY(-12deg) rotateZ(2deg); backdrop-filter: blur(7px); }.holo-top { display: flex; justify-content: space-between; font: 10px var(--mono); letter-spacing: .1em; }.holo-top i { width: 8px; height: 8px; border-radius: 50%; background: #B7FF83; box-shadow: 0 0 13px #B7FF83; }.holo-display { display: grid; gap: 7px; padding: 32px 0 20px; border-bottom: 1px solid rgba(154,238,255,.35); }.holo-display small { font: 10px var(--mono); letter-spacing: .08em; }.holo-display strong { color: #fff; font: 600 clamp(2rem, 5vw, 3rem) var(--display); text-shadow: 0 0 16px #54DFFF; }.holo-display em { color: #B7FF83; font-size: .55em; font-style: normal; }.holo-display span { color: #B7FF83; font: 11px var(--mono); }.holo-chart { display: flex; align-items: end; gap: 8px; height: 120px; padding: 18px 0; border-bottom: 1px solid rgba(154,238,255,.35); }.holo-chart span { flex: 1; background: linear-gradient(#B7FF83, #39CBF5); box-shadow: 0 0 10px rgba(89,229,255,.45); }.holo-keys { display: grid; grid-template-columns: repeat(4,1fr); gap: 7px; padding-top: 18px; }.holo-keys b { padding: 9px; border: 1px solid rgba(154,238,255,.32); text-align: center; font: 14px var(--mono); }.holo-caption { position: absolute; bottom: 28px; color: rgba(194,239,255,.74); font: 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; }.auth-page .eyebrow { color: #B7FF83; }
@media (max-width: 780px) { .auth-shell { grid-template-columns: 1fr; }.auth-intro { min-height: 560px; }.auth-visual { min-height: 470px; }.holo-scene { transform: scale(.76); } }
.dev-hero { padding: 100px 0; background: var(--ink); color: #fff; }.dev-hero h1 { max-width: 11ch; margin: 15px 0 22px; color: #fff; font-size: clamp(3rem, 7vw, 6rem); line-height: .97; }.dev-hero .eyebrow { color: var(--amber); }.dev-lede { max-width: 55ch; color: #C3D0E0; font-size: 1.15rem; margin-bottom: 28px; }.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }.service-grid article { padding: 28px; border: 1px solid var(--line); background: var(--panel); }.service-number { color: var(--amber-ink); font: .8rem var(--mono); }.service-grid h3 { margin-top: 45px; font-size: 1.35rem; }.service-grid p { font-size: .92rem; }.service-grid a { color: var(--ink); font-size: .86rem; font-weight: 700; }.process { display: grid; grid-template-columns: 1fr 1.4fr; gap: 60px; align-items: start; }.process ol { display: grid; grid-template-columns: 1fr 1fr; gap: 0 30px; padding: 0; margin: 0; list-style: none; counter-reset: steps; }.process li { display: grid; grid-template-columns: 28px 1fr; gap: 10px; padding: 17px 0; border-top: 1px solid var(--line); counter-increment: steps; }.process li:before { content: counter(steps, decimal-leading-zero); color: var(--amber-ink); font: .75rem var(--mono); }.process li b,.process li span { grid-column: 2; }.process li b { grid-row: 1; }.process li span { grid-row: 2; color: var(--ink-soft); font-size: .85rem; }.dev-cta { text-align: center; }.dev-cta p { margin-left: auto; margin-right: auto; }.whatsapp-link span { color: #1DAA61; border-color: #1DAA61; }
@media (max-width: 760px) { .service-grid,.process { grid-template-columns: 1fr; }.process { gap: 25px; }.process ol { grid-template-columns: 1fr; } }