/* =========================================================
   Mohammad Javad Gholizade — Portfolio
   Design language: 2D platformer / retro arcade, Mario-inspired
   (original palette + generic platformer motifs — no copyrighted
   character art or logos)
   ========================================================= */

:root {
  /* Color — bright, saturated, limited palette like an 8-bit world */
  --sky: #5C94FC;
  --sky-deep: #3A5FD9;
  --sky-night: #1D2B6B;
  --cloud: #FFFFFF;
  --brick: #C84C0C;
  --brick-dark: #8B3208;
  --brick-mortar: #FFEFC2;
  --ground: #D18A3D;
  --ground-dark: #8B5A2B;
  --pipe: #00A550;
  --pipe-dark: #00632F;
  --coin: #FFD700;
  --coin-dark: #B8860B;
  --accent-red: #E52521;
  --accent-red-dark: #A81C18;
  --block: #FBD000;
  --block-dark: #C79A00;
  --ink: #1A1A2E;
  --surface: #FFF8E7;
  --surface-alt: #FFEFC2;
  --text: #1A1A2E;
  --text-soft: #4A4460;
  --text-faint: #746E8C;
  --white: #FFFFFF;

  /* Type */
  --font-display: ui-monospace, "Cascadia Code", "Consolas", "Courier New", monospace;
  --font-body-en: "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, system-ui, sans-serif;
  --font-body-fa: "Vazirmatn", Tahoma, "Segoe UI", system-ui, sans-serif;
  --font-body: var(--font-body-en);

  /* Scale */
  --step--1: clamp(0.82rem, 0.79rem + 0.15vw, 0.9rem);
  --step-0: clamp(1rem, 0.96rem + 0.2vw, 1.08rem);
  --step-1: clamp(1.15rem, 1.08rem + 0.35vw, 1.35rem);
  --step-2: clamp(1.4rem, 1.25rem + 0.75vw, 1.75rem);
  --step-3: clamp(1.8rem, 1.5rem + 1.5vw, 2.4rem);
  --step-4: clamp(2.2rem, 1.7rem + 2.5vw, 3.2rem);
  --step-5: clamp(2.6rem, 1.9rem + 3.5vw, 4.4rem);

  /* Layout */
  --container-w: 1180px;
  --pixel: 4px;              /* base "pixel" border thickness */
  --radius: 4px;             /* deliberately small — chunky, not smooth */
  --nav-h: 76px;

  /* Motion */
  --ease: cubic-bezier(.2,.9,.25,1);
  --dur-s: .15s;
  --dur-m: .4s;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--surface);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
html[dir="rtl"] body { --font-body: var(--font-body-fa); }
img { max-width: 100%; display: block; image-rendering: -webkit-optimize-contrast; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4 { margin: 0; font-family: var(--font-display); font-weight: 700; letter-spacing: -0.01em; }
html[dir="rtl"] h1, html[dir="rtl"] h2, html[dir="rtl"] h3, html[dir="rtl"] h4 { font-family: var(--font-body-fa); }
p { margin: 0; }
button { font: inherit; background: none; border: none; cursor: pointer; color: inherit; }

.skip-link {
  position: fixed; top: -100px; left: 1rem; z-index: 1000;
  background: var(--accent-red); color: #fff; padding: .7rem 1.1rem;
  border: var(--pixel) solid var(--ink);
  transition: top var(--dur-s) var(--ease);
}
.skip-link:focus { top: 1rem; }

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

.container {
  width: 100%;
  max-width: var(--container-w);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

/* ---------- Pixel chrome (shared) ---------- */
.pixel-border { border: var(--pixel) solid var(--ink); }
.pixel-panel {
  background: var(--surface);
  border: var(--pixel) solid var(--ink);
  box-shadow: 6px 6px 0 var(--ink);
}

/* ---------- Sections ---------- */
.section { padding-block: clamp(3.5rem, 8vw, 6.5rem); position: relative; }
.section--alt { background: var(--surface-alt); }
.section--contact { background: var(--sky-night); color: #fff; }

.section__head { max-width: 640px; margin-bottom: clamp(2rem, 5vw, 3.5rem); }
.eyebrow {
  display: inline-block;
  color: var(--accent-red);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--step--1);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin: 0 0 .7rem;
}
html[dir="rtl"] .eyebrow { letter-spacing: 0; text-transform: none; font-family: var(--font-body-fa); }
.section--contact .eyebrow { color: var(--coin); }
.section__head h2 {
  font-size: var(--step-3);
  line-height: 1.15;
  text-transform: uppercase;
}
html[dir="rtl"] .section__head h2 { text-transform: none; }

/* ---------- Nav ---------- */
.site-header {
  position: fixed; inset-inline: 0; top: 0; z-index: 100;
  height: var(--nav-h);
  background: var(--surface);
  border-bottom: var(--pixel) solid var(--ink);
}
.nav {
  height: 100%;
  max-width: var(--container-w);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
  display: flex; align-items: center; gap: 1.5rem;
}
.nav__brand {
  font-family: var(--font-display); font-weight: 700; font-size: var(--step-0);
  margin-inline-end: auto; white-space: nowrap; letter-spacing: .02em;
}
html[dir="rtl"] .nav__brand { font-family: var(--font-body-fa); }
.nav__menu { display: flex; align-items: center; gap: clamp(.9rem, 2vw, 1.6rem); }
.nav__menu a {
  font-family: var(--font-display);
  font-size: var(--step--1);
  font-weight: 700;
  color: var(--text-soft);
  text-transform: uppercase;
  letter-spacing: .03em;
  position: relative;
  padding-block: .3rem;
}
html[dir="rtl"] .nav__menu a { font-family: var(--font-body-fa); text-transform: none; letter-spacing: 0; }
.nav__menu a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -4px; height: 3px;
  background: var(--accent-red); transform: scaleX(0); transform-origin: center;
  transition: transform var(--dur-s) var(--ease);
}
.nav__menu a:hover, .nav__menu a.is-active { color: var(--ink); }
.nav__menu a:hover::after, .nav__menu a.is-active::after { transform: scaleX(1); }

.nav__actions { display: flex; align-items: center; gap: .8rem; }
.nav__icon-link {
  display: grid; place-items: center;
  width: 36px; height: 36px;
  color: var(--ink); background: var(--surface);
  border: 3px solid var(--ink);
  transition: transform var(--dur-s), background var(--dur-s);
}
.nav__icon-link:hover { background: var(--block); transform: translateY(-2px); }

.lang-switch {
  border: 3px solid var(--ink);
  background: var(--block);
  padding: .45rem .9rem;
  font-family: var(--font-display);
  font-size: var(--step--1);
  font-weight: 700;
  color: var(--ink);
  transition: transform var(--dur-s);
}
.lang-switch:hover { transform: translateY(-2px); }

.nav__toggle {
  display: none;
  width: 40px; height: 40px;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.nav__toggle span { width: 20px; height: 3px; background: var(--ink); transition: transform var(--dur-s) var(--ease), opacity var(--dur-s); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  align-items: center;
  padding-top: var(--nav-h);
  overflow: hidden;
  background: linear-gradient(to bottom, var(--sky) 0%, var(--sky) 78%, var(--ground) 78%, var(--ground-dark) 100%);
}
.hero__scene { position: absolute; inset: 0; z-index: 1; pointer-events: none; }
.hero__content { position: relative; z-index: 2; padding-inline: clamp(1.25rem, 5vw, 4.5rem); max-width: 640px; }

.hero__eyebrow {
  display: inline-flex; align-items: center; gap: .6rem;
  font-family: var(--font-display); font-weight: 700; font-size: var(--step--1);
  text-transform: uppercase; letter-spacing: .04em;
  color: var(--ink);
  background: var(--coin);
  border: var(--pixel) solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  padding: .55rem 1rem;
  margin-bottom: 1.5rem;
}
html[dir="rtl"] .hero__eyebrow { font-family: var(--font-body-fa); text-transform: none; letter-spacing: 0; }

.hero__name {
  font-size: var(--step-5);
  line-height: 1.05;
  color: var(--white);
  text-shadow: 3px 3px 0 var(--ink), -1px -1px 0 var(--ink), 1px -1px 0 var(--ink), -1px 1px 0 var(--ink);
  margin-bottom: 1.4rem;
  text-transform: uppercase;
}
html[dir="rtl"] .hero__name { font-family: var(--font-body-fa); text-transform: none; font-weight: 800; }

.hero__statement {
  font-size: var(--step-1);
  color: var(--white);
  background: rgba(26,26,46,.35);
  border: 3px solid var(--ink);
  padding: .9rem 1.1rem;
  max-width: 46ch;
  margin-bottom: 2rem;
}

.hero__actions { display: flex; flex-wrap: wrap; gap: 1.25rem 1.5rem; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: .9rem 1.7rem;
  font-family: var(--font-display); font-weight: 700; font-size: var(--step--1);
  text-transform: uppercase; letter-spacing: .03em;
  border: var(--pixel) solid var(--ink);
  box-shadow: 5px 5px 0 var(--ink);
  transition: transform var(--dur-s) var(--ease), box-shadow var(--dur-s) var(--ease);
}
html[dir="rtl"] .btn { font-family: var(--font-body-fa); text-transform: none; letter-spacing: 0; font-weight: 700; }
.btn:active { transform: translate(4px, 4px); box-shadow: 1px 1px 0 var(--ink); }
.btn--primary { background: var(--accent-red); color: #fff; }
.btn--primary:hover { transform: translate(-2px, -2px); box-shadow: 7px 7px 0 var(--ink); }
.btn--ghost { background: var(--surface); color: var(--ink); }
.btn--ghost:hover { transform: translate(-2px, -2px); box-shadow: 7px 7px 0 var(--ink); background: var(--block); }
.section--contact .btn--ghost { background: var(--sky-night); color: #fff; }

.hero__scroll-hint {
  position: absolute; z-index: 2;
  inset-inline-start: clamp(1.25rem, 5vw, 4.5rem);
  bottom: 5.5rem;
  display: flex; align-items: center; gap: .6rem;
  font-family: var(--font-display); font-size: var(--step--1); color: var(--white);
  text-transform: uppercase; letter-spacing: .04em; font-weight: 700;
  text-shadow: 2px 2px 0 var(--ink);
}
html[dir="rtl"] .hero__scroll-hint { font-family: var(--font-body-fa); text-transform: none; letter-spacing: 0; }

/* ---------- Hero platformer scene (pure CSS, no external assets) ---------- */
.cloud {
  position: absolute;
  background: var(--cloud);
  border: 3px solid var(--ink);
  border-radius: 40px;
}
.cloud::before, .cloud::after {
  content: ""; position: absolute;
  background: var(--cloud);
  border: 3px solid var(--ink);
  border-radius: 50%;
}
.cloud::before { width: 55%; height: 140%; top: -70%; left: 8%; border-bottom: none; }
.cloud::after { width: 40%; height: 120%; top: -55%; right: 10%; border-bottom: none; }
.cloud--a { width: 110px; height: 40px; top: 14%; inset-inline-start: 8%; }
.cloud--b { width: 80px; height: 30px; top: 32%; inset-inline-start: 68%; }
.cloud--c { width: 90px; height: 32px; top: 62%; inset-inline-start: 4%; }

.qblock {
  position: absolute;
  width: 58px; height: 58px;
  background: linear-gradient(155deg, var(--block), var(--block-dark));
  border: var(--pixel) solid var(--ink);
  box-shadow: 5px 5px 0 var(--ink);
  display: grid; place-items: center;
  font-family: var(--font-display); font-weight: 700; font-size: 1.5rem;
  color: var(--ink);
}
.qblock::before { content: "?"; }
.qblock--a { top: 22%; inset-inline-start: 58%; }
.qblock--b { top: 48%; inset-inline-start: 82%; }

.coin {
  position: absolute;
  width: 34px; height: 34px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #FFF3B0, var(--coin) 55%, var(--coin-dark) 100%);
  border: 3px solid var(--ink);
}
.coin--a { top: 38%; inset-inline-start: 46%; }
.coin--b { top: 20%; inset-inline-start: 78%; }
.coin--c { top: 58%; inset-inline-start: 88%; }

.pipe {
  position: absolute;
  bottom: 0;
  width: 74px; height: 120px;
  background: linear-gradient(90deg, var(--pipe-dark), var(--pipe) 30%, var(--pipe) 70%, var(--pipe-dark));
  border: var(--pixel) solid var(--ink);
  border-bottom: none;
}
.pipe::before {
  content: "";
  position: absolute; top: -18px; left: -8px; right: -8px;
  height: 28px;
  background: linear-gradient(90deg, var(--pipe-dark), var(--pipe) 30%, var(--pipe) 70%, var(--pipe-dark));
  border: var(--pixel) solid var(--ink);
}
.pipe--a { inset-inline-start: 4%; height: 90px; }

/* ---------- About ---------- */
.about__body { display: grid; grid-template-columns: 240px 1.4fr 1fr; align-items: start; gap: clamp(2rem, 5vw, 4rem); }
.about__media { display: flex; justify-content: center; }
.about__photo-frame {
  position: relative;
  width: 100%; max-width: 240px;
  aspect-ratio: 1 / 1;
  border: var(--pixel) solid var(--ink);
  box-shadow: 6px 6px 0 var(--ink);
  overflow: hidden;
  background: linear-gradient(155deg, var(--accent-red), var(--accent-red-dark));
}
.about__photo-frame img { width: 100%; height: 100%; object-fit: cover; display: block; }
.about__photo-fallback {
  position: absolute; inset: 0;
  display: none; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.6rem);
  font-weight: 700;
  color: #fff;
}
.about__text p { color: var(--text-soft); font-size: var(--step-0); max-width: 62ch; }
.about__text p + p { margin-top: 1.1rem; }
.about__highlights { display: flex; flex-direction: column; gap: 1rem; }
.about__highlights li {
  background: var(--surface); border: var(--pixel) solid var(--ink); box-shadow: 4px 4px 0 var(--ink);
  padding: 1rem 1.2rem;
}
.about__highlights .h-label {
  display: block; font-family: var(--font-display); font-size: var(--step--1);
  color: var(--accent-red); font-weight: 700; text-transform: uppercase; letter-spacing: .03em; margin-bottom: .3rem;
}
html[dir="rtl"] .about__highlights .h-label { font-family: var(--font-body-fa); text-transform: none; letter-spacing: 0; }
.about__highlights .h-value { font-weight: 700; color: var(--ink); }

/* ---------- Timeline (Experience) ---------- */
.timeline { position: relative; max-width: 820px; display: flex; flex-direction: column; gap: 1.4rem; }
.timeline-item {
  background: var(--surface); border: var(--pixel) solid var(--ink); box-shadow: 6px 6px 0 var(--ink);
  padding: 1.3rem 1.5rem;
}
.timeline-item[data-stage="production"] { border-inline-start: 10px solid var(--pipe); }
.timeline-item[data-stage="design"] { border-inline-start: 10px solid var(--accent-red); }
.timeline-item__meta { display: flex; flex-wrap: wrap; gap: .4rem 1rem; align-items: baseline; margin-bottom: .35rem; }
.timeline-item__role { font-family: var(--font-display); font-weight: 700; font-size: var(--step-1); }
html[dir="rtl"] .timeline-item__role { font-family: var(--font-body-fa); }
.timeline-item__company { color: var(--accent-red); font-weight: 700; }
.timeline-item__dates {
  font-family: var(--font-display); color: var(--text-faint); font-size: var(--step--1);
  margin-inline-start: auto;
}
html[dir="rtl"] .timeline-item__dates { font-family: var(--font-body-fa); margin-inline-start: 0; }
.timeline-item__location { color: var(--text-faint); font-size: var(--step--1); }
.timeline-item__desc { color: var(--text-soft); max-width: 62ch; margin-top: .5rem; }
.timeline-item__resp { margin-top: .7rem; display: flex; flex-direction: column; gap: .35rem; }
.timeline-item__resp li { position: relative; padding-inline-start: 1.2rem; color: var(--text-soft); font-size: var(--step--1); }
.timeline-item__resp li::before { content: "\25B8"; position: absolute; inset-inline-start: 0; color: var(--accent-red); }

/* ---------- Skills ---------- */
.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.6rem; }
.skill-card { background: var(--surface); border: var(--pixel) solid var(--ink); box-shadow: 6px 6px 0 var(--ink); padding: 1.5rem; }
.skill-card h3 { font-size: var(--step-0); margin-bottom: 1rem; text-transform: uppercase; }
html[dir="rtl"] .skill-card h3 { text-transform: none; }
.skill-card ul { display: flex; flex-direction: column; gap: .6rem; }
.skill-pill {
  display: flex; align-items: center; justify-content: space-between; gap: .6rem;
  font-size: var(--step--1); font-weight: 700;
  background: var(--surface-alt); border: 3px solid var(--ink);
  padding: .5rem .8rem; color: var(--ink);
}
.skill-pill__level {
  font-family: var(--font-display); font-size: .7rem; text-transform: uppercase; letter-spacing: .03em;
  color: var(--white); background: var(--pipe); border: 2px solid var(--ink); padding: .15rem .5rem;
}
html[dir="rtl"] .skill-pill__level { font-family: var(--font-body-fa); text-transform: none; letter-spacing: 0; }

/* ---------- Education / Awards ---------- */
.education-list, .awards-list { display: flex; flex-direction: column; gap: 1.1rem; max-width: 760px; }
.education-item, .award-item {
  background: var(--surface); border: var(--pixel) solid var(--ink); box-shadow: 5px 5px 0 var(--ink);
  padding: 1.2rem 1.5rem; display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; align-items: center;
}
.education-item__main .degree { font-weight: 700; font-size: var(--step-0); }
.education-item__main .institution { color: var(--accent-red); font-weight: 700; margin-top: .2rem; }
.education-item__main .desc { color: var(--text-soft); font-size: var(--step--1); margin-top: .3rem; }
.education-item__dates { font-family: var(--font-display); color: var(--text-faint); font-size: var(--step--1); white-space: nowrap; }
.award-item__title { font-weight: 700; }
a.award-item__title:hover { color: var(--accent-red); text-decoration: underline; }
.award-item__year {
  font-family: var(--font-display); font-weight: 700; color: var(--ink); background: var(--coin);
  border: 3px solid var(--ink); padding: .3rem .7rem; font-size: var(--step--1);
}

/* ---------- Projects ---------- */
.project-filters { display: flex; flex-wrap: wrap; gap: .7rem; margin-bottom: 2rem; }
.project-filters button {
  border: 3px solid var(--ink);
  background: var(--surface);
  padding: .5rem 1rem;
  font-family: var(--font-display); font-size: var(--step--1); font-weight: 700;
  text-transform: uppercase; letter-spacing: .03em;
  color: var(--text-soft);
}
html[dir="rtl"] .project-filters button { font-family: var(--font-body-fa); text-transform: none; letter-spacing: 0; }
.project-filters button:hover { background: var(--surface-alt); }
.project-filters button.is-active { background: var(--accent-red); color: #fff; }

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.6rem;
}
.project-card {
  background: var(--surface);
  border: var(--pixel) solid var(--ink);
  box-shadow: 6px 6px 0 var(--ink);
  overflow: hidden;
  transition: transform var(--dur-m) var(--ease), box-shadow var(--dur-m) var(--ease);
  display: flex; flex-direction: column;
}
.project-card:hover { transform: translate(-3px, -3px); box-shadow: 9px 9px 0 var(--ink); }
.project-card__media {
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, var(--surface-alt), var(--block));
  position: relative;
  overflow: hidden;
  border-bottom: var(--pixel) solid var(--ink);
}
.project-card__media img { width: 100%; height: 100%; object-fit: cover; }
.project-card__media .media-fallback {
  position: absolute; inset: 0; display: grid; place-items: center;
  color: var(--text-faint); font-family: var(--font-display); font-size: var(--step--1); font-weight: 700;
  text-align: center; padding: 1rem; text-transform: uppercase;
}
html[dir="rtl"] .project-card__media .media-fallback { font-family: var(--font-body-fa); text-transform: none; }
.project-card__body { padding: 1.3rem 1.4rem 1.5rem; display: flex; flex-direction: column; gap: .6rem; flex: 1; }
.project-card__client { font-size: .72rem; font-weight: 700; color: var(--accent-red); text-transform: uppercase; letter-spacing: .03em; }
html[dir="rtl"] .project-card__client { text-transform: none; letter-spacing: 0; }
.project-card__title { font-size: var(--step-1); }
.project-card__desc { color: var(--text-soft); font-size: var(--step--1); }
.project-card__tags { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: auto; padding-top: .4rem; }
.project-card__tags span {
  font-size: .7rem; font-weight: 700; letter-spacing: .02em;
  color: var(--ink); background: var(--coin);
  border: 2px solid var(--ink);
  padding: .25rem .55rem;
}
.project-card__links { display: flex; flex-wrap: wrap; gap: .5rem; }
.project-card__links a {
  font-size: var(--step--1); font-weight: 700; color: var(--white); background: var(--pipe);
  border: 2px solid var(--ink); padding: .3rem .6rem;
}
.project-card__links a:hover { background: var(--pipe-dark); }
.project-more-note, .project-links-note {
  margin-top: 2rem; text-align: center; color: var(--text-faint); font-size: var(--step--1);
}

/* ---------- Contact ---------- */
.contact { text-align: center; max-width: 680px; }
.contact h2 { color: #fff; }
.contact__subtext { color: rgba(255,255,255,.85); margin-block: 1.2rem 2.2rem; font-size: var(--step-1); }
.contact__links { display: flex; flex-wrap: nowrap; justify-content: center; gap: 1rem; }
.contact__links a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 56px; height: 56px;
  flex: 0 0 auto;
  border-radius: 50%;
  border: 3px solid #fff;
  color: #fff;
  transition: all var(--dur-s) var(--ease);
}
.contact__links a:hover { background: #fff; color: var(--ink); transform: translateY(-3px); }

/* ---------- Footer ---------- */
.site-footer { border-top: var(--pixel) solid var(--ink); padding-block: 2rem; background: var(--surface); }
.site-footer__inner { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; color: var(--text-faint); font-size: var(--step--1); }

.back-to-top {
  position: fixed; inset-inline-end: 1.4rem; bottom: 1.4rem; z-index: 90;
  width: 46px; height: 46px;
  background: var(--accent-red); color: #fff;
  border: 3px solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  display: grid; place-items: center;
  opacity: 0; pointer-events: none;
  transform: translateY(10px);
  transition: opacity var(--dur-s) var(--ease), transform var(--dur-s) var(--ease);
}
.back-to-top.is-visible { opacity: 1; pointer-events: auto; transform: translateY(0); }