/* =========================================================
   Kaban — construction & renovation
   Concept: the architectural drawing sheet.
   Blueprint ink for the "plan", plaster & materials for the "built".
   ========================================================= */

@font-face { font-family: "Vazirmatn"; src: url("../fonts/vazirmatn.woff") format("woff"); font-weight: 100 900; font-display: swap; }
/* Noto Kufi Arabic for Persian headings; digits deliberately excluded so Persian numerals come from Vazirmatn */
@font-face { font-family: "Noto Kufi"; src: url("../fonts/notokufi.woff") format("woff"); font-weight: 100 900; font-display: swap; unicode-range: U+0020-002F, U+003A-0040, U+0600-065F, U+066A-06EF, U+06FA-06FF, U+200C-200F, U+FB50-FDFF, U+FE70-FEFF; }
@font-face { font-family: "Archivo"; src: url("../fonts/archivo.woff") format("woff"); font-weight: 100 900; font-stretch: 62% 125%; font-display: swap; }

:root {
    /* palette */
    --plaster: #ECEAE4;
    --plaster-2: #E1DED6;
    --concrete: #A9A69E;
    --graphite: #1F2326;
    --graphite-2: #4A4F54;
    --blueprint: #1B2E44;
    --blueprint-2: #213854;
    --chalk: rgba(232, 238, 242, .82);
    --chalk-dim: rgba(232, 238, 242, .5);
    --patina: #2C6E63;
    --patina-d: #215A50;
    --brass: #C29A4B;
    --brass-l: #D9B970;

    /* type */
    --f-body: "Archivo", system-ui, sans-serif;
    --f-display: "Archivo", system-ui, sans-serif;
    --display-stretch: 125%;
    --display-weight: 800;
    --display-track: -.02em;
    --display-leading: 1.02;

    /* scale (≈ 1.25) */
    --fs-sm: .875rem;
    --fs-base: 1.0625rem;
    --fs-md: 1.25rem;
    --fs-lg: clamp(1.4rem, 1.1rem + 1vw, 1.75rem);
    --fs-xl: clamp(2rem, 1.4rem + 2.4vw, 3.2rem);
    --fs-hero: clamp(2.7rem, 1.6rem + 4.6vw, 5.6rem);

    --wrap: 1240px;
    --gutter: clamp(1.25rem, 4vw, 3rem);
    --section: clamp(4.5rem, 3rem + 6vw, 8.5rem);
    --radius: 3px;
    --header-h: 76px;
}

.lang-fa {
    --f-body: "Vazirmatn", Tahoma, sans-serif;
    --f-display: "Noto Kufi", "Vazirmatn", sans-serif;
    --display-stretch: 100%;
    --display-weight: 800;
    --display-track: 0;
    --display-leading: 1.45;
    --fs-base: 1.0625rem;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 1rem); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
    margin: 0;
    font-family: var(--f-body);
    font-size: var(--fs-base);
    line-height: 1.65;
    color: var(--graphite);
    background: var(--plaster);
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}
.lang-fa body, body.lang-fa { line-height: 1.9; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3, p, ul, ol, dl, dd, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }

:focus-visible { outline: 2px solid var(--brass); outline-offset: 3px; }

.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; inset-inline-start: 1rem; top: -4rem; z-index: 100; background: var(--brass); color: var(--graphite); padding: .6rem 1rem; }
.skip:focus { top: 1rem; }

.wrap { width: min(100% - 2 * var(--gutter), var(--wrap)); margin-inline: auto; }

/* ---------- type ---------- */
.section-title, .hero-title, .page-title, .cta-title {
    font-family: var(--f-display);
    font-weight: var(--display-weight);
    font-stretch: var(--display-stretch);
    letter-spacing: var(--display-track);
    line-height: var(--display-leading);
    text-wrap: balance;
}
.section-title { font-size: var(--fs-xl); }
.section-lead { margin-top: 1rem; font-size: var(--fs-md); color: var(--graphite-2); max-width: 36em; text-wrap: pretty; }

/* ---------- blueprint surface: the drafting grid ---------- */
.blueprint {
    color: var(--chalk);
    background-color: var(--blueprint);
    background-image:
        linear-gradient(rgba(255,255,255,.055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.055) 1px, transparent 1px),
        linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
    background-size: 120px 120px, 120px 120px, 24px 24px, 24px 24px;
    background-position: -1px -1px;
}
.blueprint .section-lead { color: var(--chalk-dim); }

/* ---------- buttons & links ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: .5em;
    min-height: 46px; padding: .55em 1.3em;
    border: 1.5px solid transparent; border-radius: var(--radius);
    font-weight: 600; font-size: var(--fs-sm); line-height: 1.2; text-decoration: none; white-space: nowrap;
    cursor: pointer; transition: background-color .2s, color .2s, border-color .2s;
}
.btn-lg { min-height: 54px; padding-inline: 1.6em; font-size: 1rem; }
.btn-primary { background: var(--patina); color: #fff; }
.btn-primary:hover { background: var(--patina-d); }
.btn-ghost { border-color: currentColor; color: inherit; background: transparent; }
.btn-ghost:hover { background: rgba(255,255,255,.08); }
.btn-dark { background: var(--graphite); color: var(--plaster); }
.btn-dark:hover { background: #000; }

.link {
    display: inline-block; font-weight: 600; text-decoration: none;
    border-bottom: 2px solid var(--brass); padding-bottom: .1em;
}
.link:hover { color: var(--patina); }

/* ---------- header ---------- */
.site-header {
    position: sticky; top: 0; z-index: 50;
    height: var(--header-h);
    color: var(--chalk);
    background: var(--blueprint);
    border-bottom: 1px solid rgba(255,255,255,.08);
    transition: background-color .25s, color .25s, border-color .25s;
}
.site-header.is-scrolled { background: rgba(236,234,228,.94); color: var(--graphite); border-color: rgba(31,35,38,.1); backdrop-filter: blur(10px); }
.header-inner { height: 100%; display: flex; align-items: center; gap: 2rem; }

.logo { display: inline-flex; align-items: center; gap: .7rem; text-decoration: none; }
.logo-mark { width: 38px; height: 38px; }
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-name { font-family: var(--f-display); font-weight: var(--display-weight); font-stretch: var(--display-stretch); font-size: 1.45rem; }
.logo-tag { font-size: .75rem; opacity: .7; }

.nav { margin-inline-start: auto; }
.nav ul { display: flex; gap: .25rem; }
.nav a:not(.btn) { display: block; padding: .5rem .8rem; text-decoration: none; font-size: .95rem; border-radius: var(--radius); }
.nav a:not(.btn):hover { background: rgba(127,127,127,.12); }
.nav a[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--brass); border-radius: 0; }
.nav-cta { display: none; }

.header-tools { display: flex; align-items: center; gap: .75rem; }
.lang-switch { font-size: .9rem; text-decoration: none; padding: .45rem .7rem; border: 1px solid currentColor; border-radius: var(--radius); opacity: .85; }
.lang-switch:hover { opacity: 1; }
.lang-en .lang-switch { font-family: "Vazirmatn", sans-serif; }
.lang-fa .lang-switch { font-family: "Archivo", sans-serif; }
.menu-btn { display: none; background: none; border: 0; padding: .5rem; cursor: pointer; }
.menu-icon { display: grid; gap: 6px; width: 26px; }
.menu-icon span { height: 2px; background: currentColor; transition: transform .25s; }
.menu-btn[aria-expanded="true"] .menu-icon span:first-child { transform: translateY(4px) rotate(45deg); }
.menu-btn[aria-expanded="true"] .menu-icon span:last-child { transform: translateY(-4px) rotate(-45deg); }

@media (max-width: 1060px) {
    .header-cta { display: none; }
    .menu-btn { display: block; }
    .nav {
        position: fixed; inset: var(--header-h) 0 auto 0; margin: 0;
        background: var(--blueprint); color: var(--chalk);
        padding: 1.5rem var(--gutter) 2rem; border-bottom: 1px solid rgba(255,255,255,.1);
        display: none;
    }
    .nav.is-open { display: block; }
    .nav ul { flex-direction: column; gap: 0; }
    .nav a:not(.btn) { padding: .9rem 0; font-size: 1.15rem; border-bottom: 1px solid rgba(255,255,255,.08); }
    .nav a[aria-current="page"] { box-shadow: none; color: var(--brass-l); }
    .nav-cta { display: flex; margin-top: 1.5rem; width: 100%; }
}

/* =========================================================
   COMPARE SLIDER (plan ↔ built)
   ========================================================= */
.compare {
    --pos: 50%;
    position: relative; overflow: hidden;
    aspect-ratio: 8 / 5;
    background: var(--blueprint);
    color: var(--chalk);
    user-select: none; -webkit-user-select: none;
    touch-action: pan-y;
    cursor: ew-resize;
    isolation: isolate;
}
.compare-layer { position: absolute; inset: 0; }
.compare-layer > svg, .compare-layer > img { width: 100%; height: 100%; object-fit: cover; }
.compare-layer.is-plan {
    background-color: var(--blueprint);
    background-image:
        linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
    background-size: 20px 20px;
}
.compare-layer.is-built { background: var(--plaster); clip-path: inset(0 0 0 var(--pos)); }
[dir="rtl"] .compare-layer.is-built { clip-path: inset(0 var(--pos) 0 0); }

.compare-handle {
    position: absolute; top: 0; bottom: 0; inset-inline-start: var(--pos);
    width: 2px; margin-inline-start: -1px;
    background: var(--brass);
    z-index: 3;
}
.compare-handle:focus-visible { outline: none; }
.compare-handle:focus-visible .compare-grip { box-shadow: 0 0 0 4px rgba(194,154,75,.45); }
.compare-grip {
    position: absolute; top: 50%; left: 50%; translate: -50% -50%;
    width: 46px; height: 46px; border-radius: 50%;
    display: grid; place-items: center;
    background: var(--brass); color: var(--graphite);
}
.compare-grip svg { width: 22px; height: 22px; }
.compare-tag {
    position: absolute; top: .9rem; z-index: 2;
    font-size: .8rem; font-weight: 600; padding: .2rem .6rem;
    border-radius: var(--radius); pointer-events: none;
}
.tag-before { inset-inline-start: .9rem; background: rgba(27,46,68,.85); color: var(--chalk); border: 1px solid rgba(255,255,255,.25); }
.tag-after { inset-inline-end: .9rem; background: rgba(236,234,228,.92); color: var(--graphite); }

/* ---------- drawing materials ---------- */
.drawing * { vector-effect: non-scaling-stroke; }
.drawing text { font-family: var(--f-body); font-size: 15px; }

/* PLAN: line work only */
.is-plan .drawing { color: rgba(232,238,242,.35); }
.is-plan .drawing [class^="m-"], .is-plan .drawing [class*=" m-"] { fill: none; stroke: var(--chalk); stroke-width: 1.15; }
.is-plan .drawing .m-sky { stroke: none; }
.is-plan .drawing .m-earth { fill: url(#hatch); stroke: var(--chalk-dim); }
.is-plan .drawing .m-concrete { fill: url(#hatch-dense); }
.is-plan .drawing .m-wall { fill: rgba(232,238,242,.18); }
.is-plan .drawing .m-insul { stroke-dasharray: 3 3; }
.is-plan .drawing .m-glass, .is-plan .drawing .m-glass-dim { fill: rgba(140,190,220,.08); }
.is-plan .drawing .ln, .is-plan .drawing .ln-strong { stroke: var(--chalk); stroke-width: 1; }
.is-plan .drawing .ln-faint { stroke: rgba(232,238,242,.28); stroke-width: .8; }
.is-plan .drawing .built-only { display: none; }
.drawing .annotations { color: var(--brass-l); }
.drawing .annotations line, .drawing .annotations polyline { stroke: var(--brass-l); stroke-width: 1; fill: none; }
.drawing .annotations polygon, .drawing .annotations circle { fill: var(--brass-l); }
.drawing .annotations text { fill: var(--brass-l); font-size: 19px; paint-order: stroke; stroke: var(--blueprint); stroke-width: 4px; stroke-linejoin: round; }
.is-built .plan-only { display: none; }

/* BUILT: materials */
.is-built .drawing [class^="m-"], .is-built .drawing [class*=" m-"] { stroke: rgba(31,35,38,.18); stroke-width: .8; }
.is-built .m-sky { fill: url(#sky); stroke: none !important; }
.is-built .m-sun { fill: #F2D68A; stroke: none !important; }
.is-built .m-earth { fill: #8C7B66; }
.is-built .m-concrete { fill: #B8B4AB; }
.is-built .m-wall { fill: #F4F2EC; }
.is-built .m-paint { fill: #E9E4DA; }
.is-built .m-paint2 { fill: #DCE3DE; }
.is-built .m-insul { fill: #D9B970; }
.is-built .m-glass { fill: url(#glass); }
.is-built .m-glass-dim { fill: #7F98A3; }
.is-built .m-frame { fill: #2E3338; }
.is-built .m-wood { fill: #A87B52; }
.is-built .m-wood2 { fill: #7A5538; }
.is-built .m-trunk { fill: #6B5340; }
.is-built .m-floor { fill: #C9B79E; }
.is-built .m-floor2 { fill: #9FA19B; }
.is-built .m-tile { fill: #F1EEE6; }
.is-built .m-tile2 { fill: #DEDCD5; }
.is-built .m-stone { fill: #D8D3C7; }
.is-built .m-brick { fill: #B86F4E; }
.is-built .m-cab { fill: #2F4A45; }
.is-built .m-cab2 { fill: #2C6E63; }
.is-built .m-fabric { fill: #5D6D78; }
.is-built .m-fabric2 { fill: #6F808B; }
.is-built .m-fabric3 { fill: #C29A4B; }
.is-built .m-rug { fill: #B9A88C; }
.is-built .m-white { fill: #FAF9F6; }
.is-built .m-metal { fill: #3B4045; }
.is-built .m-mirror { fill: #C8D6DB; }
.is-built .m-art { fill: #2C6E63; }
.is-built .m-art2 { fill: #D9B970; }
.is-built .m-plant { fill: #4F7A4E; }
.is-built .m-plant2 { fill: #6B9461; }
.is-built .m-light { fill: #F6E3A8; }
.is-built .m-glow { fill: #F6E3A8; stroke: none !important; }
.is-built .ln { stroke: rgba(31,35,38,.35); stroke-width: 1; }
.is-built .ln-strong { stroke: #2E3338; stroke-width: 2; fill: none; }
.is-built .ln-faint { stroke: rgba(31,35,38,.12); stroke-width: 1; }

/* =========================================================
   HERO
   ========================================================= */
.hero { padding-block: clamp(2.5rem, 2rem + 4vw, 5.5rem) clamp(3rem, 2rem + 4vw, 5rem); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(2rem, 4vw, 4.5rem); align-items: center; }
.hero-title { font-size: var(--fs-hero); color: #fff; }
.lang-en .hero-title { max-width: 11ch; font-size: clamp(2.6rem, 1.6rem + 3.6vw, 4.8rem); }
.hero-lead { margin-top: 1.5rem; font-size: var(--fs-md); color: var(--chalk); max-width: 30em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2.2rem; }
.hero-visual { position: relative; }
.compare-hero { aspect-ratio: 1000 / 620; border: 1px solid rgba(232,238,242,.3); }
/* registration marks at the frame corners */
.hero-visual::before, .hero-visual::after {
    content: ""; position: absolute; width: 22px; height: 22px; pointer-events: none;
    border-color: var(--brass-l); border-style: solid; border-width: 0;
}
.hero-visual::before { top: -10px; inset-inline-start: -10px; border-top-width: 1px; border-inline-start-width: 1px; }
.hero-visual::after { bottom: 1.6rem; inset-inline-end: -10px; border-bottom-width: 1px; border-inline-end-width: 1px; }
.hero-hint { display: flex; align-items: center; gap: .5rem; margin-top: .8rem; font-size: var(--fs-sm); color: var(--chalk-dim); }

/* the one orchestrated moment: lines are drafted, then the build sweeps in */
@media (prefers-reduced-motion: no-preference) {
    .js .compare-hero .is-plan .drawing > :not(.annotations) { stroke-dasharray: 1400; stroke-dashoffset: 1400; animation: draft 1.8s cubic-bezier(.6,.1,.3,1) forwards; }
    .js .compare-hero .is-plan .annotations { opacity: 0; animation: fade .6s 1.4s forwards; }
    .js .compare-hero:not(.is-ready) .compare-handle,
    .js .compare-hero:not(.is-ready) .compare-tag { opacity: 0; }
    .compare-hero .compare-handle, .compare-hero .compare-tag { transition: opacity .4s; }
}
@keyframes draft { to { stroke-dashoffset: 0; } }
@keyframes fade { to { opacity: 1; } }

@media (max-width: 960px) {
    .hero-grid { grid-template-columns: 1fr; }
    .lang-en .hero-title { max-width: 12ch; }
}

/* ---------- trust strip ---------- */
.trust { background: var(--graphite); color: var(--plaster); }
.trust-list { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-list li { position: relative; padding: 1.3rem 1.25rem; padding-inline-start: 2.2rem; font-size: .95rem; border-inline-start: 1px solid rgba(255,255,255,.12); }
.trust-list li:first-child { border-inline-start: 0; }
.trust-list li::before { content: ""; position: absolute; inset-inline-start: 1rem; top: 50%; width: 8px; height: 8px; translate: 0 -50%; background: var(--brass); rotate: 45deg; }
@media (max-width: 900px) {
    .trust-list { grid-template-columns: 1fr 1fr; }
    .trust-list li:nth-child(3) { border-inline-start: 0; }
    .trust-list li:nth-child(n+3) { border-top: 1px solid rgba(255,255,255,.12); }
}
@media (max-width: 520px) {
    .trust-list { grid-template-columns: 1fr; }
    .trust-list li { border-inline-start: 0; border-top: 1px solid rgba(255,255,255,.12); }
    .trust-list li:first-child { border-top: 0; }
}

/* ---------- sections ---------- */
.section { padding-block: var(--section); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 2rem; margin-bottom: clamp(2rem, 4vw, 3.5rem); }
.section-head .link { flex-shrink: 0; margin-bottom: .5rem; }

/* services: sticky heading + ruled list */
.split { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: clamp(2rem, 6vw, 6rem); align-items: start; }
.split-head { position: sticky; top: calc(var(--header-h) + 2rem); }
.split-head .link { margin-top: 2rem; }
.service-list { border-top: 1.5px solid var(--graphite); }
.service-row { border-bottom: 1px solid rgba(31,35,38,.18); }
.service-row a { display: grid; grid-template-columns: 56px 1fr; gap: 1.5rem; padding-block: 1.8rem; text-decoration: none; }
.service-row .icon { width: 48px; height: 48px; color: var(--patina); margin-top: .3rem; }
.service-name { display: block; font-family: var(--f-display); font-weight: var(--display-weight); font-stretch: var(--display-stretch); font-size: var(--fs-lg); line-height: 1.2; }
.service-summary { display: block; margin-top: .45rem; color: var(--graphite-2); max-width: 38em; }
.service-row a:hover .service-name { color: var(--patina); }
.service-row a:hover .icon { color: var(--brass); }
@media (max-width: 900px) {
    .split { grid-template-columns: 1fr; }
    .split-head { position: static; }
}

/* projects */
.projects-band { background: var(--plaster-2); }
.project-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(2rem, 4vw, 3.5rem) clamp(1.5rem, 3vw, 2.5rem); }
.project-grid > :nth-child(4n+2), .project-grid > :nth-child(4n+3) { }
.compare-card { border-radius: var(--radius); }
.project-body { padding-top: 1.1rem; }
.project-title { font-size: var(--fs-md); font-weight: 700; line-height: 1.35; }
.project-title a { text-decoration: none; }
.project-title a:hover { text-decoration: underline; text-decoration-color: var(--brass); text-underline-offset: .25em; }
.project-meta { display: flex; flex-wrap: wrap; gap: .3rem 1.2rem; margin-top: .35rem; font-size: var(--fs-sm); color: var(--graphite-2); }
.project-meta span + span { position: relative; }
.project-meta span + span::before { content: ""; position: absolute; inset-inline-start: -.65rem; top: .3em; bottom: .3em; width: 1px; background: var(--concrete); }
@media (max-width: 760px) { .project-grid { grid-template-columns: 1fr; } }

/* process: a dimension line with five ticks */
.process-line { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 1.5rem; position: relative; padding-top: 3.5rem; counter-reset: step; }
.process-line::before { content: ""; position: absolute; top: 1.25rem; inset-inline: 0; height: 1px; background: var(--brass-l); }
.process-line::after { content: ""; position: absolute; top: calc(1.25rem - 8px); inset-inline-end: 0; width: 1px; height: 17px; background: var(--brass-l); }
.process-step { position: relative; }
.process-step::before { content: ""; position: absolute; top: calc(-3.5rem + 1.25rem - 8px); inset-inline-start: 0; width: 1px; height: 17px; background: var(--brass-l); }
.process-num { position: absolute; top: -3.5rem; inset-inline-start: .7rem; font-family: var(--f-display); font-weight: var(--display-weight); font-stretch: var(--display-stretch); font-size: .95rem; color: var(--brass-l); line-height: 1; }
.process-title { font-family: var(--f-display); font-weight: var(--display-weight); font-stretch: var(--display-stretch); font-size: var(--fs-md); color: #fff; line-height: 1.3; }
.process-step p { margin-top: .6rem; color: var(--chalk-dim); font-size: .95rem; }
@media (max-width: 900px) {
    .process-line { grid-template-columns: 1fr; padding-top: 0; padding-inline-start: 2.5rem; gap: 2.2rem; }
    .process-line::before { top: 0; bottom: 0; inset-inline-start: .6rem; inset-inline-end: auto; width: 1px; height: auto; }
    .process-line::after { display: none; }
    .process-step::before { top: .65rem; inset-inline-start: calc(-2.5rem + .6rem - 8px); width: 17px; height: 1px; }
    .process-num { top: -1.4rem; inset-inline-start: 0; }
}

/* stats as a drawing title block */
.stats { padding-block: var(--section) 0; }
.stats-block { border: 1.5px solid var(--graphite); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 4fr); }
.stats-head { padding: 1.5rem; border-inline-end: 1.5px solid var(--graphite); font-family: var(--f-display); font-weight: var(--display-weight); font-stretch: var(--display-stretch); font-size: var(--fs-md); line-height: 1.3; display: flex; align-items: end; }
.stats-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.stats-grid > div { padding: 1.5rem; border-inline-start: 1px solid rgba(31,35,38,.3); display: flex; flex-direction: column-reverse; justify-content: space-between; gap: 1.5rem; }
.stats-grid > div:first-child { border-inline-start: 0; }
.stats-grid dt { font-size: var(--fs-sm); color: var(--graphite-2); }
.stats-grid dd { font-family: var(--f-display); font-weight: var(--display-weight); font-stretch: var(--display-stretch); font-size: var(--fs-xl); line-height: 1; color: var(--patina); }
@media (max-width: 900px) {
    .stats-block { grid-template-columns: 1fr; }
    .stats-head { border-inline-end: 0; border-bottom: 1.5px solid var(--graphite); }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .stats-grid > div:nth-child(3) { border-inline-start: 0; }
    .stats-grid > div:nth-child(n+3) { border-top: 1px solid rgba(31,35,38,.3); }
}

/* quotes */
.quote-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1.5rem, 3vw, 3rem); margin-top: clamp(2rem, 4vw, 3rem); }
.quote { border-inline-start: 3px solid var(--brass); padding-inline-start: 1.4rem; display: flex; flex-direction: column; justify-content: space-between; gap: 1.5rem; }
.quote blockquote p { font-size: var(--fs-md); line-height: 1.7; text-wrap: pretty; }
.quote figcaption { display: flex; flex-direction: column; font-size: var(--fs-sm); color: var(--graphite-2); }
.quote figcaption strong { color: var(--graphite); font-size: 1rem; }
@media (max-width: 900px) { .quote-grid { grid-template-columns: 1fr; } }

/* CTA */
.cta { padding-block: clamp(4rem, 3rem + 4vw, 7rem); }
.cta-inner { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 2.5rem; align-items: end; }
.cta-title { font-size: var(--fs-xl); color: #fff; }
.cta-lead { margin-top: 1rem; font-size: var(--fs-md); color: var(--chalk); max-width: 34em; }
.cta-actions { display: flex; flex-direction: column; gap: .75rem; min-width: 280px; }
.cta-actions .btn { width: 100%; }
@media (max-width: 860px) { .cta-inner { grid-template-columns: 1fr; } .cta-actions { min-width: 0; } }

/* ---------- footer: drawing title block ---------- */
.site-footer { background: var(--graphite); color: rgba(236,234,228,.75); padding-block: 3.5rem 2rem; font-size: .95rem; }
.title-block { display: grid; grid-template-columns: 2fr 1fr 1.4fr 1.2fr; border: 1px solid rgba(236,234,228,.3); }
.tb-cell { padding: 1.5rem; border-inline-start: 1px solid rgba(236,234,228,.3); }
.tb-cell:first-child { border-inline-start: 0; }
.tb-brand p { margin-top: 1rem; max-width: 26em; }
.logo-light { color: var(--plaster); }
.tb-label { font-size: .8rem; font-weight: 500; color: var(--brass-l); margin-bottom: .4rem; }
.tb-label:not(:first-child) { margin-top: 1.2rem; }
.tb-links li + li { margin-top: .3rem; }
.tb-links a, .tb-cell a { text-decoration: none; }
.tb-links a:hover, .tb-cell a:hover { color: #fff; text-decoration: underline; }
.tb-phone { font-size: 1.15rem; color: var(--plaster); }
.tb-meta dl { display: grid; gap: 0; }
.tb-meta dl > div { display: flex; justify-content: space-between; gap: 1rem; padding-block: .45rem; border-bottom: 1px solid rgba(236,234,228,.15); }
.tb-meta dl > div:last-child { border-bottom: 0; }
.tb-meta dt { color: var(--brass-l); font-size: .82rem; }
.tb-meta dd { color: var(--plaster); }
.copyright { margin-top: 1.5rem; font-size: .82rem; opacity: .6; }
@media (max-width: 900px) {
    .title-block { grid-template-columns: 1fr 1fr; }
    .tb-cell:nth-child(3) { border-inline-start: 0; }
    .tb-cell:nth-child(n+3) { border-top: 1px solid rgba(236,234,228,.3); }
}
@media (max-width: 560px) {
    .title-block { grid-template-columns: 1fr; }
    .tb-cell { border-inline-start: 0; }
    .tb-cell + .tb-cell { border-top: 1px solid rgba(236,234,228,.3); }
}

/* =========================================================
   INNER PAGES
   ========================================================= */
.page-head { padding-block: clamp(3rem, 2rem + 4vw, 6rem) clamp(2.5rem, 2rem + 3vw, 4.5rem); }
.crumbs { display: flex; flex-wrap: wrap; gap: .4rem; font-size: var(--fs-sm); color: var(--chalk-dim); margin-bottom: 1.25rem; }
.crumbs a { text-decoration: none; }
.crumbs a:hover { color: #fff; text-decoration: underline; }
.crumbs li + li::before { content: "/"; margin-inline-end: .4rem; opacity: .5; }
.page-title { font-size: clamp(2.3rem, 1.5rem + 3.5vw, 4.4rem); color: #fff; max-width: 18ch; }
.page-lead { margin-top: 1.25rem; font-size: var(--fs-md); color: var(--chalk); max-width: 36em; }

/* filter chips */
.filters { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: clamp(2rem, 4vw, 3rem); }
.filters a { padding: .45rem 1rem; border: 1px solid rgba(31,35,38,.3); border-radius: 99px; text-decoration: none; font-size: var(--fs-sm); }
.filters a:hover { border-color: var(--graphite); }
.filters a[aria-current="true"] { background: var(--graphite); color: var(--plaster); border-color: var(--graphite); }
.empty { padding: 3rem; border: 1px dashed var(--concrete); text-align: center; color: var(--graphite-2); }

/* pagination */
.pager { display: flex; justify-content: center; gap: .5rem; margin-top: 3rem; }
.pager a, .pager span { min-width: 44px; height: 44px; display: grid; place-items: center; padding-inline: .8rem; border: 1px solid rgba(31,35,38,.25); border-radius: var(--radius); text-decoration: none; }
.pager [aria-current] { background: var(--graphite); color: var(--plaster); }

/* detail pages */
.detail { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); gap: clamp(2rem, 5vw, 5rem); align-items: start; }
.prose { font-size: 1.1rem; max-width: 40em; }
.prose p + p { margin-top: 1.1em; }
.spec { border-top: 1.5px solid var(--graphite); position: sticky; top: calc(var(--header-h) + 2rem); }
.spec > div { display: flex; justify-content: space-between; gap: 1rem; padding-block: .9rem; border-bottom: 1px solid rgba(31,35,38,.18); }
.spec dt { color: var(--graphite-2); }
.spec dd { font-weight: 600; text-align: end; }
.spec .btn { margin-top: 1.5rem; width: 100%; }
.feature-list { display: grid; grid-template-columns: 1fr 1fr; gap: .2rem 2rem; margin-top: 1.5rem; }
.feature-list li { position: relative; padding-block: .7rem; padding-inline-start: 1.4rem; border-bottom: 1px solid rgba(31,35,38,.15); }
.feature-list li::before { content: ""; position: absolute; inset-inline-start: 0; top: 1.25rem; width: 7px; height: 7px; background: var(--brass); rotate: 45deg; }
.sub-title { font-family: var(--f-display); font-weight: var(--display-weight); font-stretch: var(--display-stretch); font-size: var(--fs-lg); line-height: 1.25; margin-bottom: 1.5rem; }
.block-gap { margin-top: clamp(3rem, 6vw, 5rem); }
.compare-detail { aspect-ratio: 16 / 9; margin-bottom: clamp(2rem, 4vw, 3rem); }
@media (max-width: 900px) {
    .detail { grid-template-columns: 1fr; }
    .spec { position: static; }
    .feature-list { grid-template-columns: 1fr; }
}

/* about */
.about-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(2rem, 6vw, 6rem); }
.values { display: grid; grid-template-columns: 1fr 1fr; border-top: 1.5px solid var(--graphite); }
.values > div { padding: 1.6rem 0; border-bottom: 1px solid rgba(31,35,38,.18); }
.values > div:nth-child(odd) { padding-inline-end: 2rem; border-inline-end: 1px solid rgba(31,35,38,.18); }
.values > div:nth-child(even) { padding-inline-start: 2rem; }
.values h3 { font-size: var(--fs-md); margin-bottom: .4rem; }
.values p { color: var(--graphite-2); }
.team { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1.5rem; }
.team li { padding-top: 1rem; border-top: 3px solid var(--patina); }
.team strong { display: block; font-size: var(--fs-md); }
.team span { color: var(--graphite-2); font-size: .95rem; }
@media (max-width: 900px) {
    .about-grid { grid-template-columns: 1fr; }
    .team { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
    .values { grid-template-columns: 1fr; }
    .values > div:nth-child(n) { padding-inline: 0; border-inline-end: 0; }
}

/* contact & form */
.contact-grid { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: clamp(2rem, 6vw, 6rem); align-items: start; }
.contact-info { border-top: 1.5px solid var(--graphite); }
.contact-info > div { padding-block: 1.1rem; border-bottom: 1px solid rgba(31,35,38,.18); }
.contact-info dt { font-size: var(--fs-sm); color: var(--graphite-2); }
.contact-info dd { font-size: 1.1rem; font-weight: 600; margin-top: .15rem; }
.contact-info a { text-decoration: none; }
.contact-info a:hover { color: var(--patina); }

.form-card { background: #F6F5F1; border: 1px solid rgba(31,35,38,.15); padding: clamp(1.5rem, 4vw, 3rem); border-radius: var(--radius); }
.form-card .sub-title { margin-bottom: .4rem; }
.form-card > p { color: var(--graphite-2); margin-bottom: 2rem; }
.fields { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem 1.25rem; }
.field { display: flex; flex-direction: column; gap: .4rem; }
.field-full { grid-column: 1 / -1; }
.field label { font-size: .92rem; font-weight: 600; }
.field input, .field select, .field textarea {
    width: 100%; min-height: 50px; padding: .7rem .9rem;
    background: #fff; border: 1px solid rgba(31,35,38,.3); border-radius: var(--radius);
    transition: border-color .15s, box-shadow .15s;
}
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--patina); box-shadow: 0 0 0 3px rgba(44,110,99,.2); }
.field [aria-invalid="true"] { border-color: #B3412E; }
.field-error { color: #9E3524; font-size: .85rem; }
.form-foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; margin-top: 1.75rem; }
.form-foot small { color: var(--graphite-2); max-width: 28em; }
.hp { position: absolute; inset-inline-start: -9999px; }
.alert { padding: 1rem 1.25rem; border-radius: var(--radius); margin-bottom: 1.5rem; }
.alert-ok { background: #DDEAE5; border: 1px solid var(--patina); }
.alert-ok strong { display: block; color: var(--patina-d); }
.alert-err { background: #F4E1DC; border: 1px solid #B3412E; color: #7D2A1C; }
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .fields { grid-template-columns: 1fr; } }

/* service page links */
.chip-links { display: flex; flex-wrap: wrap; gap: .6rem; }
.chip-links a { display: inline-flex; align-items: center; gap: .6rem; padding: .6rem 1rem .6rem 1rem; border: 1px solid rgba(31,35,38,.25); border-radius: var(--radius); text-decoration: none; }
.chip-links a:hover { border-color: var(--patina); color: var(--patina); }
.chip-links .icon { width: 26px; height: 26px; color: var(--patina); }

/* Persian display metrics */
.lang-fa { --fs-hero: clamp(2.4rem, 1.3rem + 3.6vw, 4.5rem); --fs-xl: clamp(1.8rem, 1.3rem + 2vw, 2.8rem); }
.lang-fa .hero-title { line-height: 1.35; }
.lang-fa .page-title { line-height: 1.4; }
.stats + .process { margin-top: var(--section); }
.spec > .icon { width: 64px; height: 64px; color: var(--patina); margin-block: 1.5rem .5rem; }
.blueprint .section-title { color: #fff; }
@media (max-width: 700px) { .section-head { flex-direction: column; align-items: flex-start; gap: 1rem; } }

/* =========================================================
   CMS additions: photos, captcha, tickets, forms, blocks, blog
   ========================================================= */
.compare-photo { aspect-ratio: 16 / 10; }
.compare-hero.compare-photo { aspect-ratio: 16 / 10; }
.compare-photo .compare-layer.is-plan { background: var(--blueprint); }
.compare-photo .compare-layer > img { object-fit: cover; }

.captcha-row { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; }
.captcha-row img { border-radius: var(--radius); border: 1px solid rgba(31,35,38,.25); background: var(--plaster); }
.captcha-row input { flex: 1; min-width: 130px; min-height: 50px; padding: .7rem .9rem; background: #fff; border: 1px solid rgba(31,35,38,.3); border-radius: var(--radius); }
.captcha-row input:focus { outline: none; border-color: var(--patina); box-shadow: 0 0 0 3px rgba(44,110,99,.2); }
.captcha-row input[aria-invalid="true"] { border-color: #B3412E; }
.captcha-refresh { width: 50px; height: 50px; display: grid; place-items: center; border: 1px solid rgba(31,35,38,.25); border-radius: var(--radius); background: #fff; cursor: pointer; color: var(--graphite); }
.captcha-refresh:hover { color: var(--patina); border-color: var(--patina); }
.field-full > .captcha-field { margin-top: .25rem; }

.btn-outline { border-color: var(--graphite); color: var(--graphite); background: transparent; }
.btn-outline:hover { background: var(--graphite); color: var(--plaster); }
.contact-alt { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.5rem; }
.contact-social { margin-top: 1.5rem; }
.social { display: flex; gap: .5rem; flex-wrap: wrap; margin-top: 1rem; }
.social a { width: 42px; height: 42px; display: grid; place-items: center; border: 1px solid currentColor; border-radius: 50%; opacity: .8; }
.social a:hover { opacity: 1; color: var(--brass); }
.contact-social .social a { color: var(--graphite); }
.map-band iframe { display: block; width: 100%; height: 420px; border: 0; filter: grayscale(.4) contrast(1.05); }

.form-intro { color: var(--graphite-2); margin-bottom: 1.5rem; }
.req { color: #B3412E; }
.choices { border: 0; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: .5rem 1.25rem; }
.choices legend { font-size: .92rem; font-weight: 600; margin-bottom: .5rem; width: 100%; }
.choice { display: inline-flex; align-items: center; gap: .45rem; cursor: pointer; }
.choice input { width: 18px; height: 18px; accent-color: var(--patina); }
.field input[type=file] { padding: .6rem; min-height: 0; background: #fff; }
.narrow { max-width: 820px; }

/* tickets */
.support-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); gap: clamp(1.5rem, 4vw, 3.5rem); align-items: start; }
.track-card { background: var(--blueprint); color: var(--chalk); padding: clamp(1.5rem, 3vw, 2.5rem); border-radius: var(--radius); position: sticky; top: calc(var(--header-h) + 1.5rem); }
.track-card .sub-title { color: #fff; margin-bottom: .5rem; }
.track-card > p { color: var(--chalk-dim); margin-bottom: 1.5rem; }
.track-card .field { margin-bottom: 1rem; }
.track-card label { color: var(--chalk); }
.track-card input { width: 100%; min-height: 50px; padding: .7rem .9rem; border-radius: var(--radius); border: 1px solid rgba(255,255,255,.25); background: rgba(255,255,255,.95); }
.track-card .captcha-row img { border-color: transparent; }
.track-btn { width: 100%; margin-top: .5rem; background: var(--brass); color: var(--graphite); }
.track-btn:hover { background: var(--brass-l); }
.thread { display: flex; flex-direction: column; gap: 1rem; margin-bottom: 2rem; }
.thread .msg { border: 1px solid rgba(31,35,38,.15); background: #F6F5F1; border-radius: var(--radius); padding: 1.1rem 1.3rem; max-width: 90%; }
.thread .msg.is-staff { background: #fff; border-color: var(--patina); border-inline-start: 4px solid var(--patina); margin-inline-start: auto; }
.thread .msg header { display: flex; justify-content: space-between; gap: 1rem; font-size: .88rem; margin-bottom: .5rem; }
.thread .msg time { color: var(--graphite-2); }
.msg-body { white-space: pre-line; }
.attach { display: inline-block; margin-top: .6rem; font-size: .9rem; }
.code { font-family: "Archivo", sans-serif; letter-spacing: .05em; font-size: 1.15rem; margin-inline-start: .4rem; }
.t-status { padding: .1rem .6rem; border-radius: 99px; font-size: .85rem; background: #F6E9C8; }
.t-answered { background: #DDEAE5; }
.t-closed { background: #E4E2DC; }
.reply { margin-top: 1rem; }
.alert { padding: 1rem 1.25rem; border-radius: var(--radius); margin-bottom: 1.25rem; background: #EEECE6; border: 1px solid rgba(31,35,38,.15); }
@media (max-width: 900px) { .support-grid { grid-template-columns: 1fr; } .track-card { position: static; } .thread .msg { max-width: 100%; } }

/* page-builder blocks */
.block-bg-alt { background: var(--plaster-2); }
.block-title { margin-bottom: clamp(1.5rem, 3vw, 2.5rem); }
.block-lead { margin: -1rem 0 2rem; }
.block-img { width: 100%; height: auto; border-radius: var(--radius); }
.hero-solo { grid-template-columns: minmax(0, 1fr); }
.hero-solo .hero-title { max-width: 20ch; }
.block-bg-light .hero-title, .block-bg-alt .hero-title { color: var(--graphite); }
.block-bg-light .hero-lead, .block-bg-alt .hero-lead { color: var(--graphite-2); }
.block-bg-light.cta .cta-title, .block-bg-alt.cta .cta-title { color: var(--graphite); }
.block-bg-light.cta .cta-lead, .block-bg-alt.cta .cta-lead { color: var(--graphite-2); }
.media-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(2rem, 5vw, 5rem); align-items: center; }
.media-end .media { order: 2; }
.block-cta { margin-top: 1.75rem; }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 2.5rem; border-top: 1.5px solid currentColor; }
.feature-grid li { padding: 1.5rem 0; border-bottom: 1px solid rgba(127,127,127,.3); }
.feature-grid h3 { font-size: var(--fs-md); margin-bottom: .4rem; }
.feature-grid p { opacity: .8; }
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1rem; }
.gallery img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: var(--radius); }
.faq details { border-bottom: 1px solid rgba(31,35,38,.18); }
.faq details:first-child { border-top: 1.5px solid var(--graphite); }
.faq summary { cursor: pointer; padding: 1.2rem 0; font-weight: 700; font-size: 1.08rem; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--brass); font-size: 1.4rem; line-height: 1; }
.faq details[open] summary::after { content: "−"; }
.faq details p { padding-bottom: 1.25rem; color: var(--graphite-2); }
.blueprint .faq details { border-color: rgba(255,255,255,.2); }
.stats-after { height: var(--section); }
@media (max-width: 900px) { .media-split { grid-template-columns: 1fr; } .media-end .media { order: 0; } .feature-grid { grid-template-columns: 1fr; } }

/* markdown prose */
.md h2 { font-family: var(--f-display); font-weight: var(--display-weight); font-stretch: var(--display-stretch); font-size: var(--fs-lg); line-height: 1.35; margin: 2rem 0 .8rem; }
.md h3 { font-size: var(--fs-md); margin: 1.5rem 0 .6rem; }
.md p + p { margin-top: 1em; }
.md ul, .md ol { padding-inline-start: 1.4rem; margin: 1rem 0; }
.md ul { list-style: disc; }
.md ol { list-style: decimal; }
.md li + li { margin-top: .35rem; }
.md a { color: var(--patina); }
.md strong { font-weight: 700; }
.md img { border-radius: var(--radius); margin: 1.5rem 0; }
.md blockquote { border-inline-start: 3px solid var(--brass); padding-inline-start: 1.2rem; margin: 1.5rem 0; color: var(--graphite-2); }

/* blog */
.post-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1.5rem, 3vw, 2.5rem); }
.post-card time { display: block; font-size: var(--fs-sm); color: var(--graphite-2); margin-top: 1rem; }
.post-card h3 { font-size: var(--fs-md); line-height: 1.4; margin-top: .3rem; }
.post-card h3 a { text-decoration: none; }
.post-card h3 a:hover { text-decoration: underline; text-decoration-color: var(--brass); text-underline-offset: .25em; }
.post-card p { color: var(--graphite-2); margin-top: .5rem; font-size: .97rem; }
.post-cover { display: block; aspect-ratio: 16 / 10; overflow: hidden; border-radius: var(--radius); }
.post-cover img, .cover-ph { width: 100%; height: 100%; object-fit: cover; display: block; }
.post-date { color: var(--graphite-2); margin-bottom: 1.25rem; }
.post-hero { width: 100%; border-radius: var(--radius); margin-bottom: 2rem; }
@media (max-width: 900px) { .post-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .post-grid { grid-template-columns: 1fr; } }

/* header: more items */
@media (min-width: 1061px) and (max-width: 1240px) { .nav a:not(.btn) { padding-inline: .55rem; font-size: .9rem; } .header-inner { gap: 1rem; } }