/* ---------- Editorial Architecture Portfolio — Sahba Avazpour ---------- */
:root {
  --paper:    #F4F1EC;
  --ink:      #0E0E0E;
  --ink-70:   rgba(14,14,14,0.70);
  --ink-50:   rgba(14,14,14,0.50);
  --ink-30:   rgba(14,14,14,0.30);
  --ink-15:   rgba(14,14,14,0.15);
  --ink-08:   rgba(14,14,14,0.08);
  --accent:   #B85042;          /* terracotta */

  --serif:    "Playfair Display", "Tiempos Headline", "GT Sectra", Georgia, serif;
  --sans:     "Inter", "Söhne", "IBM Plex Sans", system-ui, sans-serif;
  --mono:     "JetBrains Mono", "IBM Plex Mono", ui-monospace, "SFMono-Regular", monospace;

  --margin:   10vw;
  --rule:     1px solid var(--ink);
  --rule-thin:1px solid var(--ink-30);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  font-feature-settings: "tnum" 1, "lnum" 1, "ss01" 1;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--ink); color: var(--paper); }

a { color: inherit; text-decoration: none; }
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

/* ----------  Layout primitives  ---------- */
.page {
  width: 100%;
  overflow-x: hidden;
}
.frame {
  padding-left: var(--margin);
  padding-right: var(--margin);
}
.grid12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: 24px;
}

/* ----------  Type primitives  ---------- */
.kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink-70);
}
.kicker-tracked {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.5em;
  text-transform: uppercase;
}
.display {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 1.02;
}
.numidx {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
}
.section-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink-70);
  display: flex;
  align-items: baseline;
  gap: 24px;
  padding-bottom: 16px;
  border-bottom: var(--rule);
  margin-bottom: 64px;
}
.section-label .num { color: var(--ink); }

/* ----------  Reveal-on-scroll  ---------- */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 400ms ease-out, transform 400ms ease-out;
  will-change: opacity, transform;
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ----------  Top rule / nav  ---------- */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 18px var(--margin);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  background: var(--paper);
  border-bottom: var(--rule-thin);
  z-index: 50;
  mix-blend-mode: normal;
}
.topbar a:hover { color: var(--accent); }
.topbar nav { display: flex; gap: 32px; }

/* ----------  Hero  ---------- */
.hero {
  min-height: 100vh;
  padding-top: 120px;
  padding-bottom: 80px;
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 0;
}
.hero-text {
  padding-left: var(--margin);
  padding-right: 48px;
}
.hero-text .kicker-tracked { display: block; margin-bottom: 28px; }
.hero-name {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(54px, 8vw, 96px);
  line-height: 0.96;
  letter-spacing: -0.02em;
  margin: 0 0 32px 0;
}
.hero-name em {
  font-style: italic;
  color: var(--accent);
  font-weight: 400;
}
.hero-statement {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(20px, 1.6vw, 26px);
  line-height: 1.35;
  color: var(--ink-70);
  max-width: 520px;
  margin: 0;
}
.hero-meta {
  position: absolute;
  left: var(--margin);
  bottom: 40px;
  display: flex;
  align-items: baseline;
  gap: 24px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--ink-70);
}
.hero-meta .chev {
  display: inline-block;
  font-size: 14px;
  margin-left: 4px;
  animation: nudge 2.4s ease-in-out infinite;
}
@keyframes nudge {
  0%,100% { transform: translateY(0); }
  50%     { transform: translateY(4px); }
}
.hero-image {
  height: 88vh;
  align-self: center;
  margin-right: 0;
  position: relative;
}
.hero-image .ph {
  height: 100%;
  width: 100%;
  border-radius: 0;
}

/* ----------  Image placeholders  ---------- */
.ph {
  position: relative;
  background: repeating-linear-gradient(
    45deg,
    rgba(14,14,14,0.04) 0px,
    rgba(14,14,14,0.04) 1px,
    rgba(14,14,14,0.00) 1px,
    rgba(14,14,14,0.00) 9px
  ), var(--ink-08);
  border: 1px solid var(--ink-15);
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  overflow: hidden;
}
.ph::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(transparent calc(50% - 1px), rgba(14,14,14,0.10) 50%, transparent calc(50% + 1px)),
    linear-gradient(90deg, transparent calc(50% - 1px), rgba(14,14,14,0.10) 50%, transparent calc(50% + 1px));
  pointer-events: none;
}
.ph .ph-meta {
  position: relative;
  z-index: 1;
  padding: 14px 16px;
  background: var(--paper);
  border-top: 1px solid var(--ink-15);
  border-right: 1px solid var(--ink-15);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-70);
  max-width: 80%;
}
.ph .ph-meta strong {
  display: block;
  color: var(--ink);
  font-weight: 500;
  margin-bottom: 2px;
}

.caption {
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--ink-70);
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
}
.caption .code { color: var(--ink); text-transform: uppercase; letter-spacing: 0.18em; font-size: 10px; }
.caption .name { color: var(--ink); }
.caption .medium { font-style: italic; color: var(--ink-70); }

/* ----------  About  ---------- */
.about {
  padding-top: 140px;
  padding-bottom: 140px;
}
.about-grid {
  display: grid;
  grid-template-columns: 480px 1fr;
  gap: 80px;
  align-items: start;
}
.about-portrait {
  width: 480px;
  height: 480px;
}
.about-text {
  padding-top: 8px;
}
.about-text p {
  font-size: 18px;
  line-height: 1.7;
  margin: 0 0 28px 0;
  max-width: 56ch;
  text-wrap: pretty;
}
.about-text p.lede {
  font-family: var(--serif);
  font-size: 28px;
  line-height: 1.35;
  font-style: italic;
  color: var(--ink);
  margin-bottom: 28px;
}
.stats {
  display: flex;
  gap: 0;
  margin-top: 36px;
  border-top: var(--rule);
  padding-top: 18px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.stats span { padding-right: 24px; margin-right: 24px; border-right: 1px solid var(--ink-30); }
.stats span:last-child { border-right: none; }

/* ----------  Index  ---------- */
.index { padding-top: 80px; padding-bottom: 120px; }
.idx-list { list-style: none; margin: 0; padding: 0; }
.idx-row {
  display: grid;
  grid-template-columns: 80px 140px 1fr 240px 24px;
  align-items: baseline;
  gap: 24px;
  padding: 20px 0;
  border-bottom: var(--rule-thin);
  cursor: pointer;
  position: relative;
  transition: background 200ms ease, padding 200ms ease;
}
.idx-row:hover { background: rgba(184,80,66,0.04); padding-left: 12px; padding-right: 12px; }
.idx-row:hover .idx-title { color: var(--accent); }
.idx-row:hover .idx-arrow { transform: translateX(0); opacity: 1; }
.idx-num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-50);
  font-variant-numeric: tabular-nums;
}
.idx-course {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-70);
}
.idx-title {
  font-family: var(--serif);
  font-size: clamp(22px, 2.2vw, 32px);
  font-weight: 400;
  letter-spacing: -0.01em;
  transition: color 180ms ease;
}
.idx-title em { font-style: italic; color: var(--ink-50); font-weight: 400; }
.idx-sub {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--ink-50);
  text-align: right;
  letter-spacing: 0.02em;
}
.idx-arrow {
  font-family: var(--mono);
  color: var(--accent);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 180ms ease, transform 180ms ease;
}

/* hover thumbnail floating with cursor */
.hover-thumb {
  position: fixed;
  width: 220px;
  height: 150px;
  pointer-events: none;
  z-index: 100;
  opacity: 0;
  transition: opacity 160ms ease;
  transform: translate(20px, -50%);
  background: var(--paper);
  border: 1px solid var(--ink);
}
.hover-thumb.visible { opacity: 1; }
.hover-thumb .hovermeta {
  position: absolute;
  left: 0; bottom: -22px;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-70);
  white-space: nowrap;
}

/* ----------  Project sections  ---------- */
.project {
  padding-top: 120px;
  padding-bottom: 120px;
  border-top: var(--rule-thin);
  position: relative;
}
.project .margin-num {
  position: absolute;
  top: 120px;
  left: calc(var(--margin) - 56px);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ink-50);
  font-variant-numeric: tabular-nums;
}
.proj-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(40px, 5.2vw, 72px);
  line-height: 1.0;
  letter-spacing: -0.02em;
  margin: 0 0 8px 0;
}
.proj-title em {
  font-style: italic;
  color: var(--accent);
  font-weight: 400;
}
.proj-course {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.5em;
  text-transform: uppercase;
  color: var(--ink-70);
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--ink-30);
  display: inline-block;
  padding-right: 60px;
}
.proj-concept {
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  max-width: 48ch;
  margin: 28px 0 32px 0;
  text-wrap: pretty;
}
.media-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-70);
}
.media-list li::before { content: "—"; color: var(--ink-30); margin-right: 8px; }
.media-list li:first-child::before { display: none; }

/* Variant A — half-bleed hero */
.variant-A .a-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  align-items: stretch;
}
.variant-A .a-text {
  padding-right: 64px;
  padding-top: 24px;
}
.variant-A .a-hero {
  height: 70vh;
  min-height: 480px;
  width: calc(50vw + var(--margin));
  margin-right: calc(var(--margin) * -1);
}
.variant-A .a-strip {
  margin-top: 64px;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
}
.variant-A .a-strip .ph { height: 280px; }

/* Variant B — editorial spread */
.variant-B .b-top {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: 24px;
  position: relative;
}
.variant-B .b-title-block {
  grid-column: 1 / span 4;
  position: relative;
  z-index: 2;
  padding-top: 40px;
}
.variant-B .b-title-overlap {
  grid-column: 1 / span 6;
  grid-row: 1;
  position: relative;
  z-index: 3;
  margin-top: -40px;
  margin-left: -8px;
}
.variant-B .b-image {
  grid-column: 4 / span 9;
  grid-row: 1;
  height: 64vh;
  min-height: 460px;
  margin-right: calc(var(--margin) * -1);
  position: relative;
}
.variant-B .b-text {
  grid-column: 1 / span 4;
  margin-top: 32px;
}
.variant-B .b-grid {
  margin-top: 80px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, 280px);
  gap: 24px;
}

/* Variant C — diptych */
.variant-C .c-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.variant-C .c-pair .ph { height: 60vh; min-height: 420px; }
.variant-C .c-text {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: 24px;
}
.variant-C .c-text .c-head {
  grid-column: 1 / span 5;
}
.variant-C .c-text .c-body {
  grid-column: 7 / span 6;
}

/* ----------  Skills  ---------- */
.skills { padding-top: 140px; padding-bottom: 140px; }
.skills-table {
  display: grid;
  grid-template-columns: 200px 1fr;
  row-gap: 28px;
  column-gap: 48px;
  border-top: var(--rule);
  padding-top: 36px;
}
.skills-table dt {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink-70);
  padding-top: 6px;
}
.skills-table dd {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(22px, 2.2vw, 30px);
  line-height: 1.3;
  font-weight: 400;
  letter-spacing: -0.01em;
}
.skills-table dd .dot { color: var(--ink-30); margin: 0 10px; font-style: normal; }
.skills-table dd em { font-style: italic; color: var(--accent); font-weight: 400; }

/* ----------  Contact / Footer  ---------- */
.contact {
  padding-top: 160px;
  padding-bottom: 60px;
  border-top: var(--rule);
}
.contact-line {
  font-family: var(--serif);
  font-size: clamp(48px, 7vw, 96px);
  line-height: 1.04;
  font-weight: 400;
  letter-spacing: -0.02em;
  margin: 0 0 64px 0;
  max-width: 18ch;
}
.contact-line em { font-style: italic; color: var(--accent); font-weight: 400; }
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--ink-30);
}
.contact-grid .label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink-70);
  display: block;
  margin-bottom: 8px;
}
.contact-grid a {
  font-size: 18px;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}
.contact-grid a:hover { color: var(--accent); }
.colophon {
  margin-top: 100px;
  padding-top: 18px;
  border-top: 1px solid var(--ink-30);
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-70);
}

/* ----------  Mobile  ---------- */
@media (max-width: 768px) {
  :root { --margin: 24px; }
  body { font-size: 15px; }
  .topbar { padding: 14px 24px; font-size: 9px; }
  .topbar nav { gap: 18px; }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 110px;
    gap: 32px;
  }
  .hero-text { padding: 0 24px; }
  .hero-image { height: 60vh; }
  .hero-meta { left: 24px; bottom: 24px; }

  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .about-portrait { width: 100%; height: auto; aspect-ratio: 1 / 1; }

  .stats { flex-wrap: wrap; gap: 8px 0; }
  .stats span { border: none; padding: 0; margin-right: 16px; }

  .idx-row {
    grid-template-columns: 40px 1fr;
    grid-template-rows: auto auto auto;
    gap: 4px 16px;
    padding: 16px 0;
  }
  .idx-num { grid-column: 1; grid-row: 1 / span 3; }
  .idx-course { grid-column: 2; grid-row: 1; font-size: 10px; }
  .idx-title { grid-column: 2; grid-row: 2; font-size: 22px; }
  .idx-sub { grid-column: 2; grid-row: 3; text-align: left; font-size: 12px; }
  .idx-arrow { display: none; }

  .project { padding-top: 64px; padding-bottom: 64px; }
  .project .margin-num { position: static; margin-bottom: 12px; display: block; }

  .variant-A .a-grid { grid-template-columns: 1fr; }
  .variant-A .a-text { padding-right: 0; padding-bottom: 32px; }
  .variant-A .a-hero { width: calc(100vw); margin-right: -24px; height: 60vh; min-height: 320px; }
  .variant-A .a-strip { grid-template-columns: 1fr; }
  .variant-A .a-strip .ph { height: 220px; }

  .variant-B .b-top { display: block; }
  .variant-B .b-title-block, .variant-B .b-title-overlap { margin: 0; }
  .variant-B .b-image { width: calc(100vw); margin-right: -24px; margin-left: -24px; height: 60vh; min-height: 320px; }
  .variant-B .b-text { margin-top: 24px; }
  .variant-B .b-grid { grid-template-columns: 1fr; grid-template-rows: none; }
  .variant-B .b-grid .ph { height: 220px; }

  .variant-C .c-pair { grid-template-columns: 1fr; }
  .variant-C .c-pair .ph { height: 50vh; min-height: 280px; }
  .variant-C .c-text { display: block; }
  .variant-C .c-text .c-body { margin-top: 16px; }

  .skills-table { grid-template-columns: 1fr; row-gap: 8px; }
  .skills-table dt { padding-top: 18px; }
  .skills-table dd { font-size: 22px; }

  .contact-grid { grid-template-columns: 1fr; }
  .colophon { flex-direction: column; gap: 6px; }
}

/* hide hover-thumb on touch */
@media (hover: none) {
  .hover-thumb { display: none !important; }
}

/* ----------  Language toggle  ---------- */
.lang-toggle {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
}
.lang-toggle button {
  background: transparent;
  border: none;
  padding: 4px 6px;
  margin: 0;
  font: inherit;
  letter-spacing: inherit;
  color: var(--ink-50);
  cursor: pointer;
  text-transform: uppercase;
  border-bottom: 1px solid transparent;
  transition: color 160ms ease, border-color 160ms ease;
}
.lang-toggle button:hover { color: var(--ink); }
.lang-toggle button.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.lang-sep { color: var(--ink-30); }

/* ----------  Farsi / RTL  ---------- */
.lang-fa {
  --serif: "Gulzar", "Playfair Display", Georgia, serif;
  --sans:  "Vazirmatn", "Inter", system-ui, sans-serif;
  --mono:  "Vazirmatn", "JetBrains Mono", ui-monospace, monospace;
}
.lang-fa body,
.lang-fa .hero-statement,
.lang-fa .proj-concept,
.lang-fa .about-text p {
  text-wrap: pretty;
}
.lang-fa .kicker,
.lang-fa .kicker-tracked,
.lang-fa .section-label,
.lang-fa .proj-course,
.lang-fa .stats,
.lang-fa .skills-table dt,
.lang-fa .colophon,
.lang-fa .contact-grid .label,
.lang-fa .caption,
.lang-fa .topbar,
.lang-fa .lang-toggle,
.lang-fa .hero-meta,
.lang-fa .idx-course,
.lang-fa .idx-num,
.lang-fa .idx-sub,
.lang-fa .margin-num,
.lang-fa .media-list,
.lang-fa .ph .ph-meta {
  letter-spacing: 0;
}
.lang-fa .kicker-tracked { letter-spacing: 0.08em; }
.lang-fa .proj-course { letter-spacing: 0.12em; padding-right: 0; padding-left: 60px; }
[dir="rtl"] .proj-course { padding-right: 0; padding-left: 60px; }
[dir="rtl"] .stats span { border-right: none; border-left: 1px solid var(--ink-30); padding-right: 0; padding-left: 24px; margin-right: 0; margin-left: 24px; }
[dir="rtl"] .stats span:last-child { border-left: none; }
[dir="rtl"] .media-list li::before { content: ""; margin: 0; }
[dir="rtl"] .media-list li:not(:first-child)::before { content: "—"; color: var(--ink-30); margin-left: 8px; margin-right: 0; }
[dir="rtl"] .hero-text { padding-left: 48px; padding-right: var(--margin); }
[dir="rtl"] .variant-A .a-hero { margin-right: 0; margin-left: calc(var(--margin) * -1); }
[dir="rtl"] .variant-A .a-text { padding-right: 0; padding-left: 64px; }
[dir="rtl"] .variant-B .b-image { margin-right: 0; margin-left: calc(var(--margin) * -1); }
[dir="rtl"] .project .margin-num { left: auto; right: calc(var(--margin) - 56px); }
[dir="rtl"] .hero-meta { left: auto; right: var(--margin); }
[dir="rtl"] .topbar nav { flex-direction: row-reverse; }
[dir="rtl"] .idx-arrow { transform: translateX(6px) scaleX(-1); }
[dir="rtl"] .idx-row:hover .idx-arrow { transform: translateX(0) scaleX(-1); }
[dir="rtl"] .hover-thumb { transform: translate(-240px, -50%); }
[dir="rtl"] .idx-sub { text-align: left; }

/* serif italic accent doesn't read in farsi — use weight instead */
.lang-fa em,
.lang-fa .hero-name em,
.lang-fa .proj-title em,
.lang-fa .contact-line em,
.lang-fa .skills-table dd em,
.lang-fa .idx-title em {
  font-style: normal;
  font-weight: 500;
}
.lang-fa .hero-statement { font-style: normal; }
.lang-fa .about-text p.lede { font-style: normal; }
.lang-fa .ph .ph-meta { letter-spacing: 0.04em; }

@media (max-width: 768px) {
  [dir="rtl"] .hero-text { padding-left: 24px; padding-right: 24px; }
  [dir="rtl"] .stats span { border: none; padding: 0; margin-left: 16px; margin-right: 0; }
  [dir="rtl"] .variant-A .a-hero { margin-left: -24px; margin-right: 0; }
  [dir="rtl"] .variant-B .b-image { margin-left: -24px; margin-right: -24px; }
  [dir="rtl"] .project .margin-num { right: auto; }
}