/* hussein.me — personal site after adineh.me: white, airy, big light display
   type, one dark chapter, colourful case cards. Logical properties so the
   Persian (rtl) and English (ltr) pages share this file. */

@import url('fonts/fa.css');
@import url('fonts/en.css');

:root {
  --bg: #ffffff;
  --bg-2: #fafafa;
  --ink: #0a0a0a;
  --ink-2: #333333;
  --muted: #6b6b6b;
  --line: #ebebeb;
  --blue: #1f3bff;
  --gold: #ffcf5a;
  --dark: #060606;
  --card-a: #e7efec; --card-a-ink: #233e36;
  --card-b: #e4eef8; --card-b-ink: #12304f;
  --card-c: #f0ebf8; --card-c-ink: #392c4b;
  --card-d: #faeee4; --card-d-ink: #5a3a22;
  --radius: 28px;
  --max: 1200px;
  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-display: 'Inter', system-ui, sans-serif;
  --ease: cubic-bezier(0.2, 0, 0, 1);
}
:lang(fa), :lang(ar) {
  --font-sans: 'Vazirmatn', 'Inter', system-ui, sans-serif;
  --font-display: 'Vazirmatn', 'Inter', system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  line-height: 1.7;
  overflow-x: hidden;
}
/* Paper grain, as on the reference. */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.5;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E");
}
a { color: inherit; }
img { max-width: 100%; display: block; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 500; color: var(--ink); letter-spacing: 0; margin: 0; }
:lang(en) h1, :lang(en) h2 { letter-spacing: -0.01em; }
p { margin: 0; }
.container { width: min(var(--max), 100% - 2rem); margin-inline: auto; }
.container--narrow { width: min(850px, 100% - 2rem); margin-inline: auto; }
.section { padding-block: clamp(4rem, 9vw, 7.5rem); }
.h2 { font-size: clamp(1.9rem, 3.4vw, 2.6rem); line-height: 1.25; }
.lead { color: var(--muted); font-size: 1.08rem; max-width: 36rem; }
.eyebrow { font-size: 0.78rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
:lang(fa) .eyebrow { letter-spacing: 0; text-transform: none; font-size: 0.9rem; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.8rem 1.35rem; border-radius: 999px;
  font-weight: 600; font-size: 0.86rem; text-decoration: none;
  letter-spacing: 0.06em; text-transform: uppercase;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s;
}
:lang(fa) .btn { letter-spacing: 0; text-transform: none; font-size: 0.95rem; }
.btn--dark { background: var(--ink); color: #fff; }
.btn--dark:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(0, 0, 0, 0.22); }
.btn--light { background: #fff; color: var(--ink); border: 1px solid var(--line); }
.btn--light:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(0, 0, 0, 0.08); }
.btn--ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn--on-dark { background: #fff; color: var(--ink); }
.link { display: inline-flex; align-items: center; gap: 0.4rem; font-weight: 600; font-size: 0.82rem; letter-spacing: 0.08em; text-transform: uppercase; text-decoration: none; color: var(--ink); }
:lang(fa) .link { letter-spacing: 0; text-transform: none; font-size: 0.95rem; }
.link svg { transition: transform 0.25s var(--ease); }
.link:hover svg { transform: translateX(4px); }
[dir='rtl'] .link:hover svg { transform: translateX(-4px); }
[dir='rtl'] .flip { transform: scaleX(-1); }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-block-end: 1px solid transparent;
  transition: border-color 0.3s;
}
.nav.is-scrolled { border-color: var(--line); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: 0.9rem; }
.mono {
  display: grid; place-items: center; width: 42px; height: 42px; border-radius: 10px;
  background: var(--ink); color: #fff; font-weight: 700; font-size: 1.2rem; text-decoration: none;
  font-family: var(--font-display);
}
.nav-greet { color: var(--muted); font-size: 0.95rem; }
.nav-links { display: flex; align-items: center; gap: 1.6rem; list-style: none; margin: 0; padding: 0; }
.nav-links a { text-decoration: none; font-size: 0.92rem; color: var(--ink-2); }
.nav-links a:hover { color: var(--ink); }
.nav-lang { font-size: 0.82rem; font-weight: 600; text-decoration: none; padding: 0.35rem 0.7rem; border-radius: 999px; border: 1px solid var(--line); }

/* ---------- hero ---------- */
.hero { text-align: center; padding-block: clamp(3rem, 8vw, 6rem) clamp(3rem, 6vw, 5rem); }
.avatar { position: relative; width: 168px; height: 168px; margin: 0 auto 2rem; }
.avatar-ring { position: absolute; inset: 0; border-radius: 50%; background: #efefef; }
.avatar-shape { position: absolute; inset-inline-start: -4px; inset-block-end: 16px; width: 62px; height: 62px; background: var(--blue); border-radius: 50% 50% 50% 0; transform: rotate(-20deg); }
.avatar img, .avatar svg { position: relative; width: 100%; height: 100%; border-radius: 50%; object-fit: cover; }
.hero h1 { font-size: clamp(2.6rem, 7vw, 4.6rem); line-height: 1.15; }
.hero h1 .spark { color: var(--gold); }
.hero-bio { max-width: 42rem; margin: 1.4rem auto 2rem; color: var(--muted); font-size: 1.1rem; }
.hero-cta { margin-block-end: 2.6rem; }
.highlights { display: flex; justify-content: center; flex-wrap: wrap; gap: 0.8rem 2.2rem; color: var(--ink-2); font-size: 0.95rem; }
.highlights li { display: inline-flex; align-items: center; gap: 0.5rem; }
.highlights svg { color: var(--blue); }
.highlights { list-style: none; margin: 0; padding: 0; }

/* ---------- dark chapter ---------- */
.dark {
  background: radial-gradient(60rem 30rem at 80% 50%, rgba(31, 59, 255, 0.16), transparent 60%), var(--dark);
  color: #d4d4d4;
  padding-block: clamp(5rem, 10vw, 8rem);
  overflow: hidden;
}
.dark h2 { color: #fff; font-size: clamp(1.9rem, 3.6vw, 2.8rem); }
.dark h2 em { font-style: normal; background: linear-gradient(90deg, #8ea0ff, #e8b6ff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.dark-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
.dark p { color: #a9a9a9; font-size: 1.08rem; margin-block: 1.2rem 1.8rem; max-width: 30rem; }
.pillars { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.7rem; }
.pillars li { display: flex; align-items: center; gap: 0.7rem; color: #e6e6e6; font-size: 0.98rem; }
.pillars svg { color: #8ea0ff; }

/* A cube that turns slowly; the reference uses a glass render. */
.scene { position: relative; display: grid; place-items: center; height: 340px; perspective: 900px; }
.scene::before { content: ''; position: absolute; width: 300px; height: 300px; border-radius: 50%; background: radial-gradient(circle, rgba(31,59,255,0.35), transparent 60%); filter: blur(30px); }
.scene::after { content: ''; position: absolute; inset: 10%; border-radius: 50%; background: radial-gradient(circle at 1px 1px, rgba(255,255,255,0.35) 1px, transparent 0) 0 0 / 14px 14px; mask-image: radial-gradient(circle, #000 20%, transparent 70%); -webkit-mask-image: radial-gradient(circle, #000 20%, transparent 70%); opacity: 0.5; animation: dust 40s linear infinite; }
@keyframes dust { to { background-position: 140px 0; } }
.cube { position: relative; width: 150px; height: 150px; transform-style: preserve-3d; animation: spin 16s linear infinite; }
.cube i { position: absolute; inset: 0; border: 1px solid rgba(255,255,255,0.35); background: linear-gradient(135deg, rgba(31,59,255,0.75), rgba(232,96,255,0.55)); backdrop-filter: blur(2px); display: grid; place-items: center; font-style: normal; font-weight: 700; font-size: 2.4rem; color: #fff; font-family: var(--font-display); }
.cube i:nth-child(1) { transform: translateZ(75px); }
.cube i:nth-child(2) { transform: rotateY(90deg) translateZ(75px); }
.cube i:nth-child(3) { transform: rotateY(180deg) translateZ(75px); }
.cube i:nth-child(4) { transform: rotateY(-90deg) translateZ(75px); }
.cube i:nth-child(5) { transform: rotateX(90deg) translateZ(75px); }
.cube i:nth-child(6) { transform: rotateX(-90deg) translateZ(75px); }
@keyframes spin { to { transform: rotateX(360deg) rotateY(360deg); } }

/* ---------- logo strip ---------- */
.strip { padding-block: 1.4rem; border-block: 1px solid var(--line); color: var(--ink); font-weight: 600; font-family: var(--font-display); font-size: 1.05rem; }

/* ---------- case studies ---------- */
.cases { background: var(--bg-2); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem; margin-block-end: 2.2rem; }
.case-grid { display: grid; gap: 1.2rem; }
.case {
  display: grid; grid-template-columns: 1fr 1.1fr; gap: 2rem; align-items: center;
  padding: clamp(1.4rem, 3vw, 2.4rem); border-radius: var(--radius);
  background: var(--c-bg); color: var(--c-ink); text-decoration: none;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.case:hover { transform: translateY(-4px); box-shadow: 0 24px 50px rgba(0, 0, 0, 0.08); }
.case--a { --c-bg: var(--card-a); --c-ink: var(--card-a-ink); }
.case--b { --c-bg: var(--card-b); --c-ink: var(--card-b-ink); }
.case--c { --c-bg: var(--card-c); --c-ink: var(--card-c-ink); }
.case--d { --c-bg: var(--card-d); --c-ink: var(--card-d-ink); }
.tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-block-end: 1rem; }
.tag { padding: 0.25rem 0.65rem; border-radius: 999px; background: rgba(255,255,255,0.7); font-size: 0.75rem; font-weight: 600; color: var(--c-ink); }
.case h3 { color: var(--c-ink); font-size: clamp(1.4rem, 2.4vw, 1.9rem); line-height: 1.3; margin-block-end: 0.8rem; }
.case p { color: color-mix(in oklab, var(--c-ink) 75%, #fff); margin-block-end: 1.4rem; }
.case .link { color: var(--c-ink); }
/* Drawn app window standing in for a screenshot. */
.shot { background: #fff; border-radius: 18px; box-shadow: 0 20px 50px rgba(0,0,0,0.08); overflow: hidden; aspect-ratio: 16 / 10; display: grid; grid-template-columns: 26% 1fr; }
.shot-side { background: #f6f6f8; padding: 12px; display: grid; gap: 8px; align-content: start; }
.shot-side i { height: 9px; border-radius: 4px; background: #e2e2ea; }
.shot-side i:first-child { width: 60%; background: var(--c-ink); opacity: 0.6; }
.shot-main { padding: 14px; display: grid; gap: 10px; align-content: start; }
.shot-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.shot-row i { height: 42px; border-radius: 8px; background: var(--c-bg); }
.shot-bar { height: 10px; border-radius: 5px; background: #eee; }
.shot-chart { height: 70px; border-radius: 10px; background: linear-gradient(180deg, color-mix(in oklab, var(--c-ink) 20%, #fff), #fff); position: relative; overflow: hidden; }
.shot-chart::after { content: ''; position: absolute; inset-inline: 10%; inset-block-end: 10px; height: 2px; background: var(--c-ink); opacity: 0.5; transform: rotate(-8deg); }
.shot-list { display: grid; gap: 6px; }
.shot-list i { height: 8px; border-radius: 4px; background: #ececf2; }
.shot-list i:nth-child(2) { width: 70%; }
.shot-list i:nth-child(3) { width: 85%; }

/* ---------- services list ---------- */
.services ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0 2rem; }
.services li { display: flex; align-items: center; gap: 0.8rem; padding-block: 1.1rem; border-block-end: 1px solid var(--line); font-size: 1.05rem; color: var(--ink); }
.services li svg { color: var(--blue); flex-shrink: 0; }

/* ---------- gallery ---------- */
.gallery { padding-block: 2rem 1rem; }
.gallery-track { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.gallery .shot { aspect-ratio: 4 / 3; }

/* ---------- values ---------- */
.values { text-align: center; }
.letters { display: flex; justify-content: center; flex-wrap: wrap; gap: 0.2em; margin-block: 1.4rem 3rem; font-family: var(--font-display); font-size: clamp(1.4rem, 3.4vw, 2.4rem); font-weight: 500; color: var(--ink); }
.letters .m-w { padding-inline: 0; margin-inline: 0; }
.letters .dot { color: var(--blue); }
.values-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; text-align: start; }
.value { padding: 1.6rem 1.4rem; border-radius: 22px; background: var(--bg-2); border: 1px solid transparent; transition: border-color 0.3s, transform 0.35s var(--ease); }
.value:hover { border-color: var(--line); transform: translateY(-4px); }
.value h3 { font-size: 1.15rem; margin-block-end: 0.5rem; }
.value p { color: var(--muted); font-size: 0.95rem; }
.value-num { display: block; font-family: var(--font-display); font-size: 0.8rem; color: var(--blue); margin-block-end: 0.8rem; letter-spacing: 0.1em; }

/* ---------- numbers ---------- */
.numbers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-block-start: 2.4rem; }
.number { padding: 1.8rem 1.6rem; border-radius: 22px; border: 1px solid var(--line); }
.number strong { display: block; font-family: var(--font-display); font-size: clamp(2.4rem, 5vw, 3.6rem); font-weight: 500; line-height: 1.1; color: var(--ink); }
.number span { color: var(--muted); }

/* ---------- faq ---------- */
.faq details { border-block-end: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding-block: 1.3rem; font-weight: 500; font-size: 1.12rem; color: var(--ink); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary .plus { position: relative; width: 20px; height: 20px; flex-shrink: 0; }
.faq summary .plus::before, .faq summary .plus::after { content: ''; position: absolute; background: var(--ink); inset-inline-start: 0; inset-block-start: 9px; width: 20px; height: 2px; transition: transform 0.3s var(--ease); }
.faq summary .plus::after { transform: rotate(90deg); }
.faq details[open] .plus::after { transform: rotate(0); }
.faq details p { padding-block: 0 1.4rem; color: var(--muted); max-width: 44rem; }

/* ---------- banner ---------- */
.banner { position: relative; text-align: center; padding: clamp(3rem, 7vw, 5.5rem) 1.5rem; border-radius: var(--radius); background: var(--ink); color: #fff; overflow: hidden; }
.banner h2 { color: #fff; font-size: clamp(2rem, 4.4vw, 3.2rem); max-width: 16em; margin: 0 auto 1.6rem; }
.banner .orbs { position: absolute; inset: 0; pointer-events: none; }
.banner .orbs i { position: absolute; width: 180px; height: 180px; border-radius: 50%; border: 1px solid rgba(255,255,255,0.12); animation: drift 18s ease-in-out infinite; }
.banner .orbs i:nth-child(1) { inset-inline-start: -40px; inset-block-start: -60px; }
.banner .orbs i:nth-child(2) { inset-inline-end: 8%; inset-block-end: -80px; width: 260px; height: 260px; animation-delay: -6s; }
.banner .orbs i:nth-child(3) { inset-inline-start: 30%; inset-block-end: -120px; width: 220px; height: 220px; animation-delay: -12s; }
@keyframes drift { 50% { transform: translateY(-20px) scale(1.05); } }

/* ---------- projects ---------- */
.projects ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.project { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.2rem 1.4rem; border-radius: 20px; border: 1px solid var(--line); text-decoration: none; color: var(--ink); transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease); }
.project:hover { transform: translateY(-3px); box-shadow: 0 16px 36px rgba(0,0,0,0.07); }
.project strong { display: block; font-weight: 600; }
.project span { color: var(--muted); font-size: 0.9rem; }
.project svg { color: var(--muted); flex-shrink: 0; }

/* ---------- footer ---------- */
.footer { padding-block: 4rem 3rem; border-block-start: 1px solid var(--line); text-align: center; }
.footer h2 { font-size: 1.6rem; margin-block-end: 1.4rem; }
.socials { display: flex; justify-content: center; flex-wrap: wrap; gap: 0.6rem; list-style: none; margin: 0 0 2rem; padding: 0; }
.socials a { display: inline-flex; align-items: center; gap: 0.45rem; padding: 0.6rem 1rem; border-radius: 999px; border: 1px solid var(--line); text-decoration: none; font-size: 0.9rem; color: var(--ink); transition: background 0.25s, transform 0.25s var(--ease); }
.socials a:hover { background: var(--bg-2); transform: translateY(-2px); }
.footer small { color: var(--muted); }

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .services ul { grid-template-columns: repeat(2, 1fr); }
  .values-grid, .gallery-track { grid-template-columns: repeat(2, 1fr); }
  .projects ul { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .nav-links li:not(.nav-cta):not(.nav-lang-li) { display: none; }
  .nav-greet { display: none; }
  .dark-grid, .case { grid-template-columns: 1fr; }
  .scene { height: 260px; }
  .numbers { grid-template-columns: 1fr; }
  .section-head { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 520px) {
  .services ul, .values-grid, .gallery-track, .projects ul { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .cube, .scene::after, .banner .orbs i { animation: none; }
}

.language-switch { display:inline-flex; align-items:center; gap:0.2rem; padding:0.2rem; background:#f5f5f5; border:1px solid var(--line); border-radius:999px; white-space:nowrap; }
.language-switch a { display:inline-block; text-decoration:none; padding:0.35rem 0.65rem; border-radius:999px; font-size:0.77rem; color:var(--ink); }
.language-switch a[aria-current="page"] { background:var(--ink); color:#fff; }
:lang(ar) .btn, :lang(ar) .link, :lang(ar) .eyebrow { letter-spacing:0; text-transform:none; }
.real-gallery { padding-block-start:1rem; }
.real-gallery__head { margin-block-end:1.6rem; }
.real-gallery__head p { color:var(--muted); margin-block-start:0.5rem; }
.real-gallery__grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:1rem; }
.real-gallery figure { margin:0; overflow:hidden; border:1px solid var(--line); border-radius:22px; background:var(--bg-2); }
.real-gallery img { width:100%; height:245px; object-fit:cover; }
.real-gallery figcaption { padding:0.85rem 1rem; font-size:0.9rem; line-height:1.5; color:var(--muted); }
@media(max-width:720px) { .nav-inner { gap:0.5rem; } .nav-links { gap:0.45rem; } .language-switch a { padding:0.32rem 0.48rem; font-size:0.72rem; } .real-gallery__grid { grid-template-columns:1fr; } .real-gallery img { height:230px; } }
@media(max-width:370px) { .nav-cta { display:none; } }