/* ============================================================
   ATRIN SHAHROKH — EE PORTFOLIO · "SILKSCREEN" THEME
   PCB green on near-black · Chakra Petch + JetBrains Mono
   ============================================================ */

:root {
  --bg: #05090c;
  --surface: #0a120e;
  --panel: #070d0a;
  --ink: #e9f5ef;
  --body: #9fb3ab;
  --muted: #7e938b;
  --dim: #5c6f67;
  --acc: #00ff9f;
  --line: rgba(0, 255, 159, 0.28);
  --line-dim: rgba(0, 255, 159, 0.14);
  --glow: rgba(0, 255, 159, 0.14);
  --font-display: "Chakra Petch", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  background-image: radial-gradient(rgba(0, 255, 159, 0.045) 1px, transparent 1px);
  background-size: 28px 28px;
  color: var(--body);
  font: 400 15px/1.85 var(--font-mono);
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--acc); color: var(--bg); }

a { color: var(--acc); text-decoration: none; transition: color 0.2s, text-shadow 0.2s; }
a:hover { text-shadow: 0 0 12px rgba(0, 255, 159, 0.6); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  line-height: 1.15;
  text-wrap: balance;
}

img { max-width: 100%; display: block; }

/* ---------- scrollbar ---------- */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #12251c; border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: #1b3a2b; }

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 9, 12, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px dashed var(--line);
}

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.logo {
  font: 600 13px var(--font-mono);
  letter-spacing: 0.16em;
  color: var(--acc);
  text-transform: uppercase;
  white-space: nowrap;
  flex: none;
}
.logo::before { content: "[ "; color: var(--dim); }
.logo::after { content: " ]"; color: var(--dim); }

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: nowrap;
}

.nav-links a {
  display: block;
  padding: 6px 9px;
  font: 500 11px var(--font-mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid transparent;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--acc); }
.nav-links li.active a {
  color: var(--acc);
  border: 1px dashed var(--line);
  background: rgba(0, 255, 159, 0.06);
}

.nav-in {
  font: 700 11px var(--font-mono);
  color: var(--bg) !important;
  background: var(--acc);
  padding: 4px 8px !important;
  border: none !important;
}
.nav-in:hover { box-shadow: 0 0 16px rgba(0, 255, 159, 0.55); }

/* hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 1px dashed var(--line);
  padding: 9px 8px;
  cursor: pointer;
}
.nav-toggle span { width: 20px; height: 2px; background: var(--acc); transition: 0.25s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 1180px) {
  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(5, 9, 12, 0.98);
    border-bottom: 1px dashed var(--line);
    padding: 12px 24px 20px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 10px; font-size: 13px; border-bottom: 1px dashed var(--line-dim); }
  .nav-links li.active a { border: none; border-bottom: 1px dashed var(--line); background: none; }
  .nav-links .nav-in { display: inline-block; margin-top: 14px; text-align: center; }
}

/* ============================================================
   HERO (index)
   ============================================================ */
.hero {
  position: relative;
  min-height: 82vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 1280px;
  margin: 0 auto;
  padding: 90px 24px 70px;
  overflow: hidden;
}

.hero-traces {
  position: absolute;
  right: -40px;
  top: 40px;
  opacity: 0.55;
  pointer-events: none;
}

.kicker {
  font: 500 12px var(--font-mono);
  letter-spacing: 0.3em;
  color: var(--acc);
  margin-bottom: 22px;
}
.kicker::before { content: ">> "; color: var(--dim); }

.hero h1 {
  font-size: clamp(38px, 6vw, 68px);
  font-weight: 700;
  max-width: 900px;
}

.hero h1 .hl {
  display: inline-block;
  color: var(--bg);
  background: var(--acc);
  padding: 0 16px;
  margin-top: 8px;
  box-shadow: 0 0 34px rgba(0, 255, 159, 0.35);
}

.hero p {
  max-width: 640px;
  color: var(--muted);
  margin: 30px 0 38px;
  font-size: 15px;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  padding: 15px 32px;
  border: 1.5px solid var(--acc);
  color: var(--acc);
  font: 600 12px var(--font-mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  background: transparent;
  cursor: pointer;
  transition: all 0.25s;
}
.btn::after { content: " ▸"; }
.btn:hover {
  background: var(--acc);
  color: var(--bg);
  box-shadow: 0 0 28px rgba(0, 255, 159, 0.5);
  text-shadow: none;
}

/* ============================================================
   TRACE DIVIDER
   ============================================================ */
.trace-divider {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}
.trace-divider svg { display: block; width: 100%; height: 26px; }

/* ============================================================
   SECTIONS / LABELS
   ============================================================ */
.section {
  max-width: 1280px;
  margin: 0 auto;
  padding: 54px 24px 30px;
}

.section-label {
  font: 500 11px var(--font-mono);
  letter-spacing: 0.3em;
  color: var(--acc);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 30px;
}
.section-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--line), transparent);
}

/* ---------- featured intro block ---------- */
.featured {
  border: 1px dashed var(--line);
  background: var(--panel);
  padding: 40px 44px;
  position: relative;
}
.featured .date-chip { margin-bottom: 14px; }
.featured h2 { font-size: clamp(24px, 3vw, 32px); margin-bottom: 16px; }
.featured h2 a { color: var(--ink); }
.featured h2 a:hover { color: var(--acc); }
.featured p { color: var(--muted); font-size: 14px; max-width: 980px; }

.date-chip {
  display: inline-block;
  font: 500 11px var(--font-mono);
  letter-spacing: 0.18em;
  color: var(--acc);
  border: 1px dashed var(--line);
  padding: 4px 12px;
  text-transform: uppercase;
}

/* ============================================================
   PROJECT CARDS (index)
   ============================================================ */
.cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.card:hover {
  transform: translateY(-5px);
  border-color: var(--acc);
  box-shadow: 0 0 0 1px var(--acc), 0 14px 44px var(--glow);
}
.card::before,
.card::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  pointer-events: none;
  z-index: 2;
}
.card::before { top: -1px; left: -1px; border-top: 2px solid var(--acc); border-left: 2px solid var(--acc); }
.card::after { bottom: -1px; right: -1px; border-bottom: 2px solid var(--acc); border-right: 2px solid var(--acc); }

.card-img {
  display: block;
  border-bottom: 1px dashed var(--line);
  background:
    repeating-linear-gradient(45deg, rgba(0, 255, 159, 0.05) 0 10px, transparent 10px 20px),
    var(--panel);
  overflow: hidden;
}
.card-img img {
  width: 100%;
  height: auto;
  filter: saturate(0.92);
  transition: transform 0.4s, filter 0.3s;
}
.card:hover .card-img img { transform: scale(1.03); filter: saturate(1.05); }

.card-body { padding: 24px 26px 28px; display: flex; flex-direction: column; flex: 1; }

.card-meta {
  display: flex;
  justify-content: space-between;
  font: 500 11px var(--font-mono);
  letter-spacing: 0.16em;
  color: var(--acc);
  margin-bottom: 12px;
}
.card-meta .ref { opacity: 0.5; }

.card h2 { font-size: 21px; margin-bottom: 12px; }
.card h2 a { color: var(--ink); }
.card h2 a:hover { color: var(--acc); }

.card p { font-size: 12.5px; line-height: 1.75; color: var(--muted); flex: 1; }

.card-actions { margin-top: 20px; }
.card-actions .btn { padding: 11px 22px; font-size: 11px; }

/* ============================================================
   PROJECT / RESUME PAGE
   ============================================================ */
.post-head {
  max-width: 1020px;
  margin: 0 auto;
  padding: 76px 24px 22px;
}
.post-head h1 {
  font-size: clamp(30px, 4.6vw, 52px);
  font-weight: 700;
  margin: 20px 0 26px;
}

.skills {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font: 500 11px var(--font-mono);
}
.skills .skills-label {
  color: var(--acc);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-right: 6px;
}
.skills .chip {
  border: 1px solid var(--line);
  color: var(--body);
  padding: 5px 12px;
  letter-spacing: 0.04em;
  transition: all 0.2s;
  cursor: default;
}
.skills .chip:hover {
  border-color: var(--acc);
  color: var(--acc);
  box-shadow: 0 0 14px var(--glow);
}

.prose {
  max-width: 1020px;
  margin: 0 auto;
  padding: 0 24px 70px;
  counter-reset: sec;
}

.prose h3 {
  font-size: 22px;
  margin: 60px 0 20px;
  padding-top: 8px;
  color: var(--ink);
}
.prose h3::before {
  counter-increment: sec;
  content: counter(sec, decimal-leading-zero) "/ ";
  color: var(--acc);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  vertical-align: 2px;
  margin-right: 4px;
}

.prose p, .prose blockquote { color: var(--body); font-size: 14px; margin-bottom: 18px; }
.prose blockquote { border: 0; }
.prose blockquote p:last-child { margin-bottom: 0; }
.prose h4 {
  font-size: 15px;
  color: var(--acc);
  margin: 26px 0 10px;
  letter-spacing: 0.08em;
}

.prose ul { list-style: none; margin: 0 0 18px; }
.prose ul li { padding-left: 22px; position: relative; margin-bottom: 8px; font-size: 14px; }
.prose ul li::before { content: "▸"; position: absolute; left: 0; color: var(--acc); }

.prose hr {
  border: 0;
  border-top: 1px dashed var(--line-dim);
  margin: 52px 0;
  position: relative;
  overflow: visible;
}
.prose hr::after {
  content: "";
  position: absolute;
  left: 50%;
  top: -4px;
  width: 7px;
  height: 7px;
  background: var(--acc);
  transform: translateX(-50%) rotate(45deg);
  box-shadow: 0 0 10px rgba(0, 255, 159, 0.6);
}

/* ---------- framed images ---------- */
.image.fit, .image.main, .image.left {
  display: block;
  position: relative;
  border: 1px solid var(--line-dim);
  background: var(--panel);
  padding: 10px;
  margin: 10px 0 22px;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.image.fit:hover, .image.main:hover {
  border-color: var(--acc);
  box-shadow: 0 0 24px var(--glow);
}
.image.fit::before, .image.main::before {
  content: "";
  position: absolute;
  top: -1px; left: -1px;
  width: 12px; height: 12px;
  border-top: 2px solid var(--acc);
  border-left: 2px solid var(--acc);
}
.image.fit::after, .image.main::after {
  content: "";
  position: absolute;
  bottom: -1px; right: -1px;
  width: 12px; height: 12px;
  border-bottom: 2px solid var(--acc);
  border-right: 2px solid var(--acc);
}
.image.fit img, .image.main img, .image.left img { width: 100%; }

/* ---------- 12-col grid (preserved col-N markup) ---------- */
.row, .box.alt .row {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 22px;
  align-items: start;
  margin-bottom: 8px;
}
.row > div { min-width: 0; }
.col-1 { grid-column: span 1; } .col-2 { grid-column: span 2; }
.col-3 { grid-column: span 3; } .col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; } .col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; } .col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; } .col-10 { grid-column: span 10; }
.col-11 { grid-column: span 11; } .col-12 { grid-column: span 12; }
.col-12:not(.row .col-12) { display: block; }

@media (max-width: 980px) {
  .col-12-medium { grid-column: span 12; }
}

/* ---------- tables ---------- */
.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0 24px;
  font-size: 13px;
}
.prose td, .prose th {
  border: 1px dashed var(--line);
  padding: 16px 18px;
  vertical-align: top;
  text-align: left;
}
.prose tr td:first-child {
  color: var(--acc);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  width: 20%;
}

/* ============================================================
   CONTACT / FOOTER
   ============================================================ */
.contact {
  max-width: 1280px;
  margin: 30px auto 0;
  padding: 0 24px;
}

.contact-box {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 46px 48px;
}

.contact-box h2 { font-size: clamp(24px, 3vw, 32px); margin: 14px 0 16px; }
.contact-box h2 a { color: var(--ink); }
.contact-box h2 a:hover { color: var(--acc); }
.contact-box > p { color: var(--muted); font-size: 13.5px; max-width: 860px; margin-bottom: 30px; }

.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.contact-cell {
  border: 1px dashed var(--line);
  padding: 20px 22px;
  transition: all 0.25s;
}
.contact-cell:hover { border-color: var(--acc); box-shadow: 0 0 18px var(--glow); }
.contact-cell h3 {
  font: 600 10.5px var(--font-mono);
  letter-spacing: 0.26em;
  color: var(--acc);
  margin-bottom: 10px;
}
.contact-cell p, .contact-cell a { font-size: 13px; color: var(--body); word-break: break-word; }
.contact-cell a:hover { color: var(--acc); }

.contact-cell.linkedin {
  background: var(--acc);
  border: none;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.contact-cell.linkedin h3 { color: rgba(5, 9, 12, 0.65); }
.contact-cell.linkedin a { color: var(--bg); font-weight: 700; }
.contact-cell.linkedin a:hover { text-shadow: none; }
.contact-cell.linkedin:hover { box-shadow: 0 0 30px rgba(0, 255, 159, 0.5); }

.copyright {
  max-width: 1280px;
  margin: 0 auto;
  padding: 26px 24px 30px;
  margin-top: 40px;
  border-top: 1px dashed var(--line-dim);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font: 400 10.5px var(--font-mono);
  letter-spacing: 0.2em;
  color: var(--dim);
  text-transform: uppercase;
}
.copyright ul { list-style: none; display: flex; gap: 8px; }
.copyright ul li + li::before { content: "— "; }

/* ============================================================
   SCROLL FADE-IN
   ============================================================ */
.js .fade {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.js .fade.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .js .fade { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 860px) {
  .cards { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr 1fr; }
  .hero { min-height: 70vh; padding-top: 70px; }
  .hero-traces { display: none; }
  .featured { padding: 30px 26px; }
  .contact-box { padding: 34px 28px; }
}

@media (max-width: 620px) {
  .contact-grid { grid-template-columns: 1fr; }
  .row, .box.alt .row { grid-template-columns: 1fr; }
  .row > div { grid-column: span 1 !important; }
  .prose table, .prose tr, .prose td { display: block; width: 100%; }
  .prose tr td:first-child { width: 100%; border-bottom: 0; }
  .prose tr { margin-bottom: 14px; }
}