/*
 * ocms.ir — the product site.
 * Intent: the calm confidence of a good parts catalogue — you see exactly what you get,
 *         what comes in the box and what costs extra.
 * Signature: every module is a numbered part (SKU, spec line, status) on fine engineering paper;
 *            the O mark is an ember ring.
 * Constraint: no gradients, glass, blobs, 3-icon rows or illustrations — only real screenshots.
 * (variance 6 · motion 3 · density 6). No JavaScript: the CSP is script-src 'none'.
 */
@font-face { font-family: Vazirmatn; font-weight: 400; font-display: swap; src: url(fonts/vazirmatn-arabic-400-normal.woff2) format('woff2'); unicode-range: U+0600-06FF, U+0750-077F, U+200C-200E, U+FB50-FDFF, U+FE70-FEFF; }
@font-face { font-family: Vazirmatn; font-weight: 700; font-display: swap; src: url(fonts/vazirmatn-arabic-700-normal.woff2) format('woff2'); unicode-range: U+0600-06FF, U+0750-077F, U+200C-200E, U+FB50-FDFF, U+FE70-FEFF; }
@font-face { font-family: Vazirmatn; font-weight: 400; font-display: swap; src: url(fonts/vazirmatn-latin-400-normal.woff2) format('woff2'); unicode-range: U+0000-00FF, U+2000-206F; }
@font-face { font-family: Vazirmatn; font-weight: 700; font-display: swap; src: url(fonts/vazirmatn-latin-700-normal.woff2) format('woff2'); unicode-range: U+0000-00FF, U+2000-206F; }

:root {
  color-scheme: light;
  --paper: #eef0ec;          /* cool engineering paper (not the warm cream of other projects) */
  --paper-2: #e4e7e2;
  --sheet: #f8f9f6;
  --grid: rgb(32 40 36 / 0.055);
  --rule: #c9cec7;
  --rule-strong: #9aa29a;
  --ink: #15191a;            /* graphite */
  --ink-2: #3d4442;
  --ink-3: #626a67;
  --ember: #c94310;          /* the O ring; links and the one primary action */
  --ember-ink: #a3360b;      /* ember for text on paper, 5.9:1 */
  --ember-soft: #f6dfd2;
  --ok: #2c6340;
  --night: #121615;          /* terminal / dark plates */
  --night-ink: #e7ebe6;
  --night-dim: #8c9691;
  --mono: ui-monospace, 'Cascadia Mono', 'SFMono-Regular', Menlo, Consolas, monospace;
  --sans: Vazirmatn, 'Segoe UI', system-ui, sans-serif;
  --r: 4px;
  --wrap: 1180px;
  --shadow: 0 1px 0 rgb(21 25 26 / 0.06), 0 12px 32px -18px rgb(21 25 26 / 0.35);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0; color: var(--ink); font: 400 16.5px/1.75 var(--sans);
  background-color: var(--paper);
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px;
}
:lang(en) body, body:lang(en) { line-height: 1.6; }
img { display: block; max-inline-size: 100%; block-size: auto; }
a { color: var(--ember-ink); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--ember); outline-offset: 3px; border-radius: 2px; }
code, kbd, .mono { font-family: var(--mono); font-size: 0.88em; }
:not(pre) > code { background: var(--paper-2); padding: 0.1em 0.4em; border-radius: 3px; direction: ltr; unicode-bidi: isolate; }
.skip { position: absolute; inset-inline-start: 12px; inset-block-start: -60px; background: var(--ink); color: var(--sheet); padding: 8px 14px; z-index: 10; }
.skip:focus { inset-block-start: 12px; }
.wrap { max-inline-size: var(--wrap); margin-inline: auto; padding-inline: 24px; }
.ltr { direction: ltr; unicode-bidi: isolate; }

/* ---- header ------------------------------------------------------------------------- */
.top { position: sticky; inset-block-start: 0; z-index: 5; background: rgb(238 240 236 / 0.94); border-block-end: 1px solid var(--rule); }
@supports (backdrop-filter: blur(1px)) { .top { background: rgb(238 240 236 / 0.82); backdrop-filter: saturate(1.2) blur(8px); } }
.top .wrap { display: flex; align-items: center; gap: 28px; min-block-size: 62px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; letter-spacing: 0.01em; }
.ring { inline-size: 26px; block-size: 26px; border-radius: 50%; border: 6px solid var(--ember); flex: none; }
.brand small { font-weight: 400; color: var(--ink-3); font-size: 13px; }
.nav { display: flex; gap: 22px; margin-inline-start: auto; align-items: center; font-size: 15px; }
.nav a { color: var(--ink-2); text-decoration: none; white-space: nowrap; }
.nav a:hover, .nav a[aria-current='page'] { color: var(--ink); text-decoration: underline; }
.lang { border: 1px solid var(--rule-strong); border-radius: var(--r); padding: 3px 10px; font-size: 13px; }
.btn { display: inline-flex; align-items: center; gap: 8px; min-block-size: 44px; padding: 0 20px; border-radius: var(--r); font-weight: 700; text-decoration: none; border: 1px solid var(--ink); color: var(--ink); background: transparent; transition: transform 120ms ease, background-color 120ms ease; }
.btn:hover { background: var(--sheet); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--ember); border-color: var(--ember); color: #fff; }
.btn.primary:hover { background: var(--ember-ink); }
.btn.small { min-block-size: 36px; padding: 0 14px; font-size: 14px; }

/* ---- hero ----------------------------------------------------------------------------- */
.hero { padding-block: 72px 40px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); gap: 48px; align-items: center; }
.eyebrow { font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); display: flex; gap: 10px; align-items: center; margin: 0 0 18px; }
.eyebrow::before { content: ''; inline-size: 22px; block-size: 1px; background: var(--ink-3); }
h1 { font-size: clamp(2.3rem, 4.2vw, 3.6rem); line-height: 1.12; letter-spacing: -0.02em; margin: 0 0 20px; font-weight: 700; text-wrap: balance; }
:lang(fa) h1, :lang(fa) h2 { letter-spacing: 0; line-height: 1.3; }
:lang(fa) .hero h1 { font-size: clamp(2.1rem, 3.4vw, 3rem); }
h1 em { font-style: normal; color: var(--ember-ink); }
.lede { font-size: 1.12rem; color: var(--ink-2); max-inline-size: 34em; margin: 0 0 28px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.fineprint { font-size: 13.5px; color: var(--ink-3); margin-block-start: 14px; }

/* a screenshot sits in a plain "plate": hairline frame + caption strip, like a catalogue photo */
.plate { margin: 0; background: var(--sheet); border: 1px solid var(--rule-strong); border-radius: var(--r); box-shadow: var(--shadow); overflow: hidden; }
.plate img { inline-size: 100%; border-block-end: 1px solid var(--rule); }
.plate figcaption { display: flex; justify-content: space-between; gap: 12px; padding: 9px 14px; font-size: 13px; color: var(--ink-3); }
.plate figcaption b { color: var(--ink); font-weight: 700; }
.plate .no { font-family: var(--mono); font-size: 12px; direction: ltr; }
.hero .plate { transform: rotate(-0.6deg); }
[dir='rtl'] .hero .plate { transform: rotate(0.6deg); }

/* ---- facts strip ------------------------------------------------------------------------ */
.facts { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-block: 1px solid var(--ink); margin-block: 24px 0; }
.facts div { padding: 18px 20px; border-inline-start: 1px solid var(--rule); }
.facts div:first-child { border-inline-start: 0; }
.facts b { display: block; font-size: 1.9rem; line-height: 1.1; font-variant-numeric: tabular-nums; }
.facts span { font-size: 14px; color: var(--ink-2); }

/* ---- sections ----------------------------------------------------------------------------- */
section { padding-block: 72px; }
.sec-head { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 32px; margin-block-end: 36px; align-items: start; }
.sec-no { font-family: var(--mono); font-size: 13px; color: var(--ink-3); border-block-start: 2px solid var(--ink); padding-block-start: 10px; direction: ltr; text-align: start; }
h2 { font-size: clamp(1.7rem, 2.8vw, 2.4rem); line-height: 1.2; letter-spacing: -0.015em; margin: 0 0 12px; text-wrap: balance; }
.sec-head p { margin: 0; color: var(--ink-2); max-inline-size: 42em; font-size: 1.05rem; }
h3 { font-size: 1.12rem; margin: 0 0 6px; }

/* "what you get after install": a contact sheet of real screens */
.sheet-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 20px; }
.sheet-grid .plate:nth-child(1) { grid-column: span 4; }
.sheet-grid .plate:nth-child(2) { grid-column: span 2; }
.sheet-grid .plate:nth-child(n+3) { grid-column: span 3; }
.sheet-grid .plate.tall img { aspect-ratio: auto; }

/* ---- parts catalogue (modules) ------------------------------------------------------------------ */
.parts { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr)); gap: 0; border: 1px solid var(--ink); background: var(--sheet); }
.part { padding: 22px 22px 18px; border-inline-end: 1px solid var(--rule); border-block-end: 1px solid var(--rule); display: grid; grid-template-rows: auto auto 1fr auto; gap: 8px; }
.part-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.sku { font-family: var(--mono); font-size: 12px; color: var(--ink-3); direction: ltr; }
.tier { font-family: var(--mono); font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.06em; padding: 2px 8px; border-radius: 2px; border: 1px solid currentColor; }
.tier.core { color: var(--ink-2); }
.tier.free { color: var(--ok); }
.tier.paid { color: var(--ember-ink); }
.part p { margin: 0; color: var(--ink-2); font-size: 15px; }
.spec { margin: 6px 0 0; padding: 10px 0 0; border-block-start: 1px dashed var(--rule); list-style: none; font-size: 13.5px; color: var(--ink-3); display: grid; gap: 3px; }
.spec li::before { content: '— '; color: var(--rule-strong); }
.part.soon { grid-column: 1 / -1; background: repeating-linear-gradient(135deg, transparent 0 10px, rgb(21 25 26 / 0.025) 10px 11px); }

/* ---- feature ledger: rows, not icon cards ------------------------------------------------------ */
.ledger { border-block-start: 1px solid var(--ink); }
.row { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: 32px; padding-block: 22px; border-block-end: 1px solid var(--rule); }
.row h3 { font-size: 1.05rem; }
.row p { margin: 0; color: var(--ink-2); }
.row ul { margin: 6px 0 0; padding-inline-start: 1.2em; color: var(--ink-2); }

/* languages specimen */
.specimen { display: flex; flex-wrap: wrap; gap: 10px 22px; font-size: 1.35rem; line-height: 1.5; margin: 0; padding: 0; list-style: none; }
.specimen li { white-space: nowrap; }
.specimen li span { font-family: var(--mono); font-size: 11px; color: var(--ink-3); margin-inline-start: 6px; vertical-align: super; }

/* themes */
.themes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.themes .plate img { aspect-ratio: 4 / 3; object-fit: cover; object-position: top; }
.honest { margin-block-start: 18px; padding: 14px 18px; border-inline-start: 3px solid var(--ember); background: var(--sheet); color: var(--ink-2); font-size: 15px; }

/* ---- night plate: terminal ------------------------------------------------------------------------ */
.night { background: var(--night); color: var(--night-ink); }
.night .sec-no { border-color: var(--night-ink); color: var(--night-dim); }
.night .sec-head p, .night .row p { color: var(--night-dim); }
.night a { color: #f39b6d; }
.steps { counter-reset: s; display: grid; gap: 0; border-block-start: 1px solid #2c3431; }
.step { display: grid; grid-template-columns: 64px minmax(0, 4fr) minmax(0, 6fr); gap: 24px; padding-block: 24px; border-block-end: 1px solid #2c3431; align-items: start; }
.step::before { counter-increment: s; content: counter(s, decimal-leading-zero); font-family: var(--mono); color: #f39b6d; font-size: 14px; padding-block-start: 3px; direction: ltr; }
.step p { margin: 0; color: var(--night-dim); }
pre { margin: 0; padding: 14px 16px; background: #0b0e0d; color: #dfe6e0; border: 1px solid #2c3431; border-radius: var(--r); overflow-x: auto; font: 13.5px/1.6 var(--mono); direction: ltr; text-align: left; }
pre .c { color: #7d8a84; }
pre .p { color: #f39b6d; user-select: none; }
.doc pre { background: var(--night); }

/* ---- pricing ------------------------------------------------------------------------------------- */
.plans { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border: 1px solid var(--ink); background: var(--sheet); }
.plan { padding: 26px; border-inline-end: 1px solid var(--rule); display: flex; flex-direction: column; gap: 10px; }
.plan:last-child { border-inline-end: 0; }
.plan .price { font-size: 1.6rem; font-weight: 700; }
.plan .price small { font-size: 14px; color: var(--ink-3); font-weight: 400; }
.plan ul { margin: 0; padding-inline-start: 1.2em; color: var(--ink-2); font-size: 15px; flex: 1; }
.plan.mark { box-shadow: inset 0 3px 0 var(--ember); }

/* ---- docs pages ------------------------------------------------------------------------------------- */
.doc-layout { display: grid; grid-template-columns: 230px minmax(0, 1fr); gap: 48px; padding-block: 48px 80px; }
.toc { position: sticky; inset-block-start: 84px; align-self: start; font-size: 14.5px; }
.toc b { display: block; font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-3); margin-block-end: 10px; }
.toc ol { margin: 0; padding: 0; list-style: none; display: grid; gap: 6px; border-inline-start: 1px solid var(--rule); }
.toc a { display: block; padding-inline-start: 12px; color: var(--ink-2); text-decoration: none; }
.toc a:hover { color: var(--ink); }
.doc { max-inline-size: 760px; background: var(--sheet); border: 1px solid var(--rule-strong); border-radius: var(--r); padding: 40px 44px; }
.doc h1 { font-size: 2.2rem; }
.doc h2 { font-size: 1.45rem; margin-block-start: 44px; padding-block-start: 18px; border-block-start: 1px solid var(--rule); scroll-margin-block-start: 80px; }
.doc h3 { margin-block-start: 24px; }
.doc p, .doc li { color: var(--ink-2); }
.doc pre { margin-block: 12px 18px; }
.doc table { border-collapse: collapse; inline-size: 100%; font-size: 15px; margin-block: 12px; }
.doc th, .doc td { text-align: start; padding: 8px 10px; border-block-end: 1px solid var(--rule); vertical-align: top; }
.doc th { font-size: 13px; color: var(--ink-3); font-weight: 700; }
.note { padding: 12px 16px; border-inline-start: 3px solid var(--ink); background: var(--paper); margin-block: 14px; font-size: 15px; }
.note.warn { border-color: var(--ember); }

/* ---- footer ------------------------------------------------------------------------------------------ */
footer { border-block-start: 1px solid var(--ink); padding-block: 36px 48px; font-size: 14px; color: var(--ink-3); }
footer .wrap { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
footer a { color: var(--ink-2); }

/* ---- motion: one entrance, only when welcome ------------------------------------------------------------ */
@media (prefers-reduced-motion: no-preference) {
  .hero .plate { animation: settle 700ms cubic-bezier(0.2, 0.8, 0.2, 1) both 120ms; }
  .hero h1, .hero .lede, .hero .cta { animation: rise 600ms cubic-bezier(0.2, 0.8, 0.2, 1) both; }
  .hero .lede { animation-delay: 60ms; } .hero .cta { animation-delay: 120ms; }
  @keyframes rise { from { opacity: 0; transform: translateY(10px); } }
  @keyframes settle { from { opacity: 0; transform: translateY(18px) rotate(0deg); } }
}

/* ---- narrow --------------------------------------------------------------------------------------------- */
@media (max-width: 960px) {
  .hero-grid, .sec-head, .row, .doc-layout { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .themes, .plans { grid-template-columns: minmax(0, 1fr); }
  .plan { border-inline-end: 0; border-block-end: 1px solid var(--rule); }
  .sheet-grid { grid-template-columns: minmax(0, 1fr); }
  .sheet-grid .plate:nth-child(n) { grid-column: auto; }
  .facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .facts div:nth-child(3) { border-inline-start: 0; }
  .facts div:nth-child(n+3) { border-block-start: 1px solid var(--rule); }
  .step { grid-template-columns: 40px minmax(0, 1fr); }
  .step pre { grid-column: 1 / -1; }
  .toc { position: static; }
  .doc { padding: 24px 20px; }
  .hero .plate, [dir='rtl'] .hero .plate { transform: none; }
  footer .wrap { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 720px) {
  .nav .hide-s { display: none; }
  .top .wrap { gap: 14px; }
  .nav { gap: 14px; }
  .hero { padding-block: 40px 24px; }
  section { padding-block: 52px; }
}

/* monospace + letter-spacing break Persian shaping: labels in fa use the text face */
:lang(fa) .eyebrow, :lang(fa) .toc b, :lang(fa) .sec-no { font-family: var(--sans); letter-spacing: 0; text-transform: none; }