/* =========================================================
   ARMAN SOLTANI — SCHEMATIC PORTFOLIO
   Design concept: personal site as a circuit board.
   Arman = the MCU. His companies = peripheral ICs (U1–U6).
   Navigation = a copper trace that charges as you scroll.
   ========================================================= */

:root{
  --bg:            #0d1117;
  --surface:       #131a22;
  --surface-2:     #1a232c;
  --border:        #2a343e;
  --border-soft:   #212b34;

  --text:          #e7ecf1;
  --text-muted:    #8b98a5;
  --text-dim:      #5c6773;

  --copper:        #cc8b4c;
  --copper-bright: #e6a565;
  --copper-dim:    rgba(204,139,76,0.16);
  --steel:         #5fa8cc;

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body:    'IBM Plex Sans', system-ui, sans-serif;
  --font-mono:    'IBM Plex Mono', ui-monospace, monospace;

  --nav-w: 92px;
  --radius: 3px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; scroll-behavior:auto !important; }
}

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

a{ color:inherit; }
img{ max-width:100%; display:block; }
ul{ list-style:none; margin:0; padding:0; }

::selection{ background:var(--copper-dim); color:var(--copper-bright); }

:focus-visible{
  outline:2px solid var(--copper-bright);
  outline-offset:3px;
  border-radius:2px;
}

/* =========================================================
   BACKGROUND GRID TEXTURE (used in hero)
   ========================================================= */
.hero__grid{
  position:absolute; inset:0;
  background-image:
    linear-gradient(var(--border-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-soft) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 35%, black 30%, transparent 80%);
  opacity:0.5;
}

/* =========================================================
   MOBILE TOP BAR + PROGRESS RAIL
   ========================================================= */
.mobile-rail{
  position:fixed; top:0; left:0; right:0; height:2px;
  background:var(--border-soft); z-index:60; display:none;
}
.mobile-rail__fill{
  height:100%; width:0%;
  background:var(--copper-bright);
  box-shadow:0 0 8px var(--copper-bright);
  transition:width .08s linear;
}

.topbar{
  display:none;
  position:fixed; top:2px; left:0; right:0; z-index:50;
  align-items:center; justify-content:space-between;
  padding:14px 20px;
  background:rgba(13,17,23,0.85);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border-soft);
}
.topbar__mark{
  font-family:var(--font-mono); font-weight:500; letter-spacing:.05em;
  color:var(--copper-bright); text-decoration:none; font-size:1rem;
}
.topbar__toggle{
  width:32px; height:24px; background:none; border:none; cursor:pointer;
  display:flex; flex-direction:column; justify-content:space-between; padding:2px 0;
}
.topbar__toggle span{
  display:block; height:2px; background:var(--text); border-radius:1px;
  transition:transform .25s ease, opacity .25s ease;
}
body.menu-open .topbar__toggle span:nth-child(1){ transform:translateY(9px) rotate(45deg); }
body.menu-open .topbar__toggle span:nth-child(2){ opacity:0; }
body.menu-open .topbar__toggle span:nth-child(3){ transform:translateY(-9px) rotate(-45deg); }

.mobile-menu{
  display:none;
  position:fixed; top:52px; left:0; right:0; z-index:49;
  background:var(--surface);
  border-bottom:1px solid var(--border);
  flex-direction:column;
  transform:translateY(-8px);
  opacity:0;
  pointer-events:none;
  transition:transform .25s ease, opacity .25s ease;
}
body.menu-open .mobile-menu{
  transform:translateY(0); opacity:1; pointer-events:auto;
}
.mobile-menu a{
  display:flex; align-items:center; gap:12px;
  padding:16px 22px;
  text-decoration:none; color:var(--text-muted);
  font-family:var(--font-mono); font-size:.95rem;
  border-bottom:1px solid var(--border-soft);
}
.mobile-menu a.active{ color:var(--copper-bright); }
.mm-idx{ color:var(--text-dim); font-size:.8rem; }

/* =========================================================
   DESKTOP TRACE NAV (the signature element)
   ========================================================= */
.trace-nav{
  position:fixed; top:0; left:0; bottom:0; width:var(--nav-w);
  display:flex; flex-direction:column; align-items:center;
  justify-content:center; gap:0;
  z-index:50;
  padding:40px 0;
}
.trace-nav__track{
  position:absolute; top:12%; bottom:12%; left:50%;
  width:2px; transform:translateX(-50%);
  background:var(--border-soft);
}
.trace-nav__fill{
  position:absolute; bottom:0; left:0; width:100%;
  background:linear-gradient(var(--copper-bright), var(--copper));
  box-shadow:0 0 10px var(--copper);
  height:0%;
  transition:height .12s linear;
}
.trace-node{
  position:relative; z-index:2;
  display:flex; align-items:center;
  width:100%; padding:0; margin:0;
  text-decoration:none;
  flex:1;
  justify-content:center;
}
.trace-node__dot{
  width:10px; height:10px; border-radius:50%;
  background:var(--bg);
  border:2px solid var(--border);
  transition:border-color .2s ease, background .2s ease, box-shadow .2s ease;
}
.trace-node.active .trace-node__dot,
.trace-node:hover .trace-node__dot{
  border-color:var(--copper-bright);
  background:var(--copper-bright);
  box-shadow:0 0 10px var(--copper-bright);
}
.trace-node__label{
  position:absolute; left:26px; top:50%; transform:translateY(-50%);
  display:flex; align-items:baseline; gap:6px;
  font-family:var(--font-mono); font-size:.72rem; letter-spacing:.04em;
  color:var(--text-dim);
  white-space:nowrap;
  opacity:0; transform:translate(-6px,-50%);
  transition:opacity .2s ease, transform .2s ease;
  pointer-events:none;
}
.trace-node__label em{ font-style:normal; color:var(--copper); }
.trace-node:hover .trace-node__label,
.trace-node.active .trace-node__label{
  opacity:1; transform:translate(0,-50%);
}
.trace-node.active .trace-node__label{ color:var(--text); }

@media (max-width: 860px){
  .trace-nav{ display:none; }
  .topbar{ display:flex; }
  .mobile-menu{ display:flex; }
  .mobile-rail{ display:block; }
}

/* =========================================================
   LAYOUT SHELL
   ========================================================= */
main{ margin-left:var(--nav-w); }
@media (max-width: 860px){
  main{ margin-left:0; padding-top:54px; }
}

.section__inner, .hero__inner{
  max-width:900px;
  margin:0 auto;
  padding:0 32px;
}

/* =========================================================
   HERO
   ========================================================= */
.hero{
  position:relative;
  min-height:92vh;
  display:flex; align-items:center;
  padding:80px 0 60px;
  overflow:hidden;
}
.hero__inner{ position:relative; z-index:1; width:100%; }

.eyebrow{
  font-family:var(--font-mono); font-size:.75rem; letter-spacing:.16em;
  color:var(--copper); margin:0 0 28px;
  text-transform:uppercase;
}

.chip-wrap{ position:relative; margin-bottom:8px; }
.chip-outline{
  width:100%; max-width:640px; height:auto;
  display:block; margin:0 0 -70px -8px;
  opacity:0.9;
}
.chip-body{
  fill:none; stroke:var(--border); stroke-width:1.5;
}
.chip-pins line{
  stroke:var(--border); stroke-width:2;
}
.chip-label{
  font-family:var(--font-mono); font-size:11px; fill:var(--text-dim);
  letter-spacing:.05em;
}

.hero__name{
  position:relative; z-index:2;
  font-family:var(--font-display);
  font-weight:700;
  font-size:clamp(3rem, 9vw, 6rem);
  line-height:0.95;
  letter-spacing:-0.01em;
  margin:0 0 28px;
  padding-left:20px;
}

.hero__typewriter{
  font-family:var(--font-mono);
  font-size:clamp(1rem, 2vw, 1.25rem);
  color:var(--text-muted);
  margin:0 0 20px;
  display:flex; align-items:center;
}
.tw-prefix{ color:var(--text-dim); }
.tw-text{ color:var(--copper-bright); }
.tw-cursor{
  display:inline-block; width:9px; height:1.1em; margin-left:2px;
  background:var(--copper-bright);
  animation:blink 1s step-end infinite;
  transform:translateY(2px);
}
@keyframes blink{ 50%{ opacity:0; } }

.hero__quote{
  font-family:var(--font-body); font-style:italic;
  color:var(--text-dim); font-size:.95rem;
  margin:0 0 44px;
  max-width:420px;
}

.hero__cta{ display:flex; flex-wrap:wrap; gap:14px; }

/* =========================================================
   BUTTONS
   ========================================================= */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:13px 24px;
  font-family:var(--font-mono); font-size:.85rem; letter-spacing:.02em;
  text-decoration:none;
  border-radius:var(--radius);
  border:1px solid transparent;
  transition:transform .15s ease, border-color .2s ease, background .2s ease, color .2s ease;
}
.btn:hover{ transform:translateY(-2px); }
.btn--primary{
  background:var(--copper); color:#0d1117; font-weight:500;
  border-color:var(--copper);
}
.btn--primary:hover{ background:var(--copper-bright); border-color:var(--copper-bright); }
.btn--ghost{
  background:transparent; color:var(--text-muted);
  border-color:var(--border);
}
.btn--ghost:hover{ color:var(--text); border-color:var(--copper); }

/* =========================================================
   SECTIONS (shared)
   ========================================================= */
.section{ padding:110px 0; border-top:1px solid var(--border-soft); }
.section__eyebrow{
  font-family:var(--font-mono); font-size:.72rem; letter-spacing:.14em;
  color:var(--text-dim); margin:0 0 10px; text-transform:uppercase;
}
.section__title{
  font-family:var(--font-display); font-weight:600;
  font-size:clamp(1.9rem, 4vw, 2.6rem);
  margin:0 0 48px;
}
.subhead{
  font-family:var(--font-display); font-weight:600; font-size:1.15rem;
  color:var(--text); margin:44px 0 18px;
}
.subhead:first-of-type{ margin-top:0; }

/* =========================================================
   ABOUT — datasheet
   ========================================================= */
.datasheet{
  display:grid; grid-template-columns:1fr 1fr; gap:56px;
}
@media (max-width:700px){ .datasheet{ grid-template-columns:1fr; gap:40px; } }

.spec-list{ margin:0; }
.spec-row{
  display:flex; justify-content:space-between; gap:16px;
  padding:14px 0; border-bottom:1px solid var(--border-soft);
}
.spec-row dt{
  font-family:var(--font-mono); font-size:.78rem; letter-spacing:.05em;
  color:var(--text-dim); text-transform:uppercase;
}
.spec-row dd{ margin:0; color:var(--text); text-align:right; }

.meters{ display:flex; flex-direction:column; gap:22px; }
.meter__head{
  display:flex; justify-content:space-between;
  font-family:var(--font-mono); font-size:.8rem;
  color:var(--text-muted); margin-bottom:8px;
}
.meter__value{ color:var(--copper); }
.meter__track{
  height:8px; background:var(--surface-2); border:1px solid var(--border-soft);
  border-radius:2px; overflow:hidden;
  background-image:repeating-linear-gradient(90deg, transparent, transparent 9px, var(--border-soft) 9px, var(--border-soft) 10px);
}
.meter__fill{
  height:100%; width:0;
  background:linear-gradient(90deg, var(--copper), var(--copper-bright));
  box-shadow:0 0 6px var(--copper-dim);
  transition:width 1.1s cubic-bezier(.16,1,.3,1);
}
.meter.in-view .meter__fill{ width:var(--v); }

/* =========================================================
   RESUME — education / IC grid / honors
   ========================================================= */
.edu-list{ margin-bottom:8px; }
.edu-list li{
  display:flex; align-items:baseline; gap:14px;
  padding:12px 0; border-bottom:1px solid var(--border-soft);
  color:var(--text);
}
.edu-tag{
  font-family:var(--font-mono); font-size:.68rem; letter-spacing:.05em;
  color:var(--copper); border:1px solid var(--border);
  padding:2px 7px; border-radius:2px; flex-shrink:0;
}

.board-note{ color:var(--text-dim); font-size:.92rem; margin:0 0 28px; max-width:520px; }

.ic-grid{
  display:grid; grid-template-columns:repeat(3, 1fr); gap:18px;
  margin-bottom:16px;
}
@media (max-width:760px){ .ic-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:520px){ .ic-grid{ grid-template-columns:1fr; } }

.ic-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:22px 18px 18px;
  transition:transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.ic-card::before{
  content:"";
  position:absolute; top:-1px; left:14px; right:14px; height:4px;
  background-image:repeating-linear-gradient(90deg, var(--border) 0 3px, transparent 3px 9px);
}
.ic-card:hover{
  transform:translateY(-4px);
  border-color:var(--copper);
  box-shadow:0 10px 30px -12px rgba(204,139,76,0.25);
}
.ic-card__designator{
  position:absolute; top:14px; right:14px;
  font-family:var(--font-mono); font-size:.7rem; color:var(--text-dim);
  border:1px solid var(--border-soft); padding:1px 6px; border-radius:2px;
}
.ic-card__logo{
  width:44px; height:44px; border-radius:6px;
  background:var(--surface-2); border:1px solid var(--border-soft);
  display:flex; align-items:center; justify-content:center;
  overflow:hidden; margin-bottom:14px;
}
.ic-card__logo img{ width:100%; height:100%; object-fit:contain; }
.ic-card__name{ font-family:var(--font-display); font-size:1.02rem; margin:0 0 4px; }
.ic-card__role{ color:var(--text-dim); font-size:.85rem; margin:0 0 16px; }
.ic-card__links{ display:flex; gap:10px; }
.ic-card__links a{
  width:30px; height:30px; border-radius:50%;
  border:1px solid var(--border-soft);
  display:flex; align-items:center; justify-content:center;
  color:var(--text-muted); text-decoration:none;
  transition:border-color .2s ease, color .2s ease;
}
.ic-card__links a:hover{ border-color:var(--copper); color:var(--copper-bright); }

.honors-list li{
  position:relative;
  padding:11px 0 11px 20px;
  border-bottom:1px solid var(--border-soft);
  color:var(--text-muted); font-size:.92rem;
}
.honors-list li::before{
  content:""; position:absolute; left:0; top:19px;
  width:6px; height:6px; border-radius:50%;
  background:var(--border);
}
.honors-list li a{ color:var(--text); text-decoration:none; border-bottom:1px dotted var(--border); }
.honors-list li a:hover{ color:var(--copper-bright); border-color:var(--copper); }

/* =========================================================
   CONTENT — resource list
   ========================================================= */
.resource-list{ display:flex; flex-direction:column; gap:10px; }
.resource{
  display:flex; align-items:center; gap:16px;
  padding:16px 18px;
  background:var(--surface);
  border:1px solid var(--border-soft);
  border-radius:var(--radius);
  text-decoration:none; color:var(--text);
  transition:border-color .2s ease, transform .2s ease;
}
.resource:hover{ border-color:var(--copper); transform:translateX(4px); }
.resource__icon{
  width:34px; height:34px; flex-shrink:0; border-radius:6px;
  background:var(--surface-2); display:flex; align-items:center; justify-content:center;
  color:var(--copper);
}
.resource__text{ display:flex; flex-direction:column; gap:2px; flex:1; }
.resource__title{ font-weight:500; }
.resource__meta{ font-family:var(--font-mono); font-size:.72rem; color:var(--text-dim); }
.resource__go{ color:var(--text-dim); font-family:var(--font-mono); }

/* =========================================================
   CONTACT
   ========================================================= */
.terminal{
  background:var(--surface);
  border:1px solid var(--border-soft);
  border-radius:6px;
  overflow:hidden;
  margin-bottom:36px;
  max-width:560px;
}
.terminal__bar{
  display:flex; gap:6px; padding:12px 14px;
  background:var(--surface-2); border-bottom:1px solid var(--border-soft);
}
.terminal__bar span{
  width:9px; height:9px; border-radius:50%; background:var(--border);
}
.terminal__body{ padding:20px 22px; font-family:var(--font-mono); font-size:.88rem; }
.terminal__body p{ margin:0 0 12px; color:var(--text-muted); }
.terminal__body p:last-child{ margin-bottom:0; }
.terminal__body a{ color:var(--steel); text-decoration:none; }
.terminal__body a:hover{ text-decoration:underline; }
.t-prompt{ color:var(--copper); margin-right:8px; }
.t-arrow{ color:var(--text-dim); margin:0 6px; }
.t-ok{ color:#7fbf7f; }

.social-row{ display:flex; flex-wrap:wrap; gap:12px; }
.social-row a{
  width:42px; height:42px; border-radius:8px;
  border:1px solid var(--border-soft);
  display:flex; align-items:center; justify-content:center;
  color:var(--text-muted); text-decoration:none;
  transition:border-color .2s ease, color .2s ease, transform .2s ease;
}
.social-row a:hover{ border-color:var(--copper); color:var(--copper-bright); transform:translateY(-3px); }

.ic{ width:18px; height:18px; fill:none; stroke:currentColor; stroke-width:1.6; stroke-linecap:round; stroke-linejoin:round; }
.ic-card__links .ic, .resource__icon .ic{ width:15px; height:15px; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer{
  border-top:1px solid var(--border-soft);
  padding:32px;
  text-align:center;
  font-family:var(--font-mono); font-size:.78rem;
  color:var(--text-dim);
}