/* ============================================================
   Lupu Marius Gabriel — profile page
   Engineering / terminal aesthetic · dark-atmospheric default
   ============================================================ */

:root {
  /* type */
  --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;

  /* accent (overridable by tweak) — default blue */
  --accent: oklch(0.68 0.14 256);
  --accent-ink: oklch(0.18 0.02 256);

  /* spacing rhythm */
  --maxw: 1180px;
  --gutter: clamp(20px, 5vw, 64px);
  --section-pad: clamp(72px, 11vw, 150px);
  --radius: 14px;
  --radius-sm: 9px;
}

/* ---------- dark (default) ---------- */
:root,
[data-theme="dark"] {
  --bg: oklch(0.165 0.013 264);
  --bg-1: oklch(0.198 0.015 264);
  --bg-2: oklch(0.232 0.016 264);
  --bg-3: oklch(0.28 0.018 264);
  --text: oklch(0.95 0.005 264);
  --text-dim: oklch(0.74 0.012 264);
  --text-faint: oklch(0.56 0.014 264);
  --line: oklch(0.32 0.013 264);
  --line-soft: oklch(0.26 0.013 264);
  --accent-wash: color-mix(in oklab, var(--accent) 14%, transparent);
  --accent-edge: color-mix(in oklab, var(--accent) 42%, transparent);
  --grid-line: color-mix(in oklab, var(--text) 5%, transparent);
  --shadow: 0 1px 0 oklch(1 0 0 / 0.04) inset, 0 24px 60px -30px oklch(0 0 0 / 0.7);
  color-scheme: dark;
}

/* ---------- light ---------- */
[data-theme="light"] {
  --bg: oklch(0.975 0.004 264);
  --bg-1: oklch(1 0 0);
  --bg-2: oklch(0.985 0.003 264);
  --bg-3: oklch(0.945 0.005 264);
  --text: oklch(0.23 0.014 264);
  --text-dim: oklch(0.44 0.014 264);
  --text-faint: oklch(0.6 0.012 264);
  --line: oklch(0.89 0.006 264);
  --line-soft: oklch(0.93 0.005 264);
  --accent: oklch(0.56 0.15 256);
  --accent-wash: color-mix(in oklab, var(--accent) 9%, transparent);
  --accent-edge: color-mix(in oklab, var(--accent) 32%, transparent);
  --grid-line: color-mix(in oklab, var(--text) 5%, transparent);
  --shadow: 0 1px 2px oklch(0 0 0 / 0.04), 0 22px 50px -34px oklch(0.4 0.05 264 / 0.4);
  color-scheme: light;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background 0.5s ease, color 0.5s ease;
}

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

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }

/* atmospheric backdrop */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 600px at 78% -8%, var(--accent-wash), transparent 60%),
    radial-gradient(700px 500px at -5% 12%, color-mix(in oklab, var(--accent) 8%, transparent), transparent 55%);
  pointer-events: none;
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 120% 90% at 50% 0%, #000 25%, transparent 78%);
          mask-image: radial-gradient(ellipse 120% 90% at 50% 0%, #000 25%, transparent 78%);
  pointer-events: none;
  opacity: 0.7;
}

/* ============================================================
   layout helpers
   ============================================================ */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
section { position: relative; }

.kicker {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.55em;
  margin-bottom: 1.4rem;
}
.kicker::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--accent-edge);
}
.kicker .idx { color: var(--text-faint); }

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; line-height: 1.06; letter-spacing: -0.02em; }

.section-head { max-width: 720px; margin-bottom: clamp(40px, 6vw, 72px); }
.section-head h2 { font-size: clamp(1.9rem, 4.2vw, 3rem); }
.section-head p { color: var(--text-dim); font-size: 1.06rem; margin-top: 1.1rem; max-width: 56ch; }

.mono { font-family: var(--font-mono); }
.dim { color: var(--text-dim); }
.faint { color: var(--text-faint); }

/* ============================================================
   nav
   ============================================================ */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 14px var(--gutter);
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
}
.nav.scrolled {
  background: color-mix(in oklab, var(--bg) 78%, transparent);
  -webkit-backdrop-filter: blur(14px);
          backdrop-filter: blur(14px);
  border-bottom-color: var(--line-soft);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.brand .mark {
  display: grid;
  place-items: center;
  width: 30px; height: 30px;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-ink);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: -0.04em;
}
.brand .cursor { color: var(--accent); animation: blink 1.2s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.nav-links { display: flex; align-items: center; gap: 2px; }
.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-dim);
  padding: 8px 12px;
  border-radius: 8px;
  transition: color 0.2s ease, background 0.2s ease;
}
.nav-links a:hover { color: var(--text); background: var(--bg-2); }
.nav-links a .n { color: var(--text-faint); margin-right: 0.4em; }

.nav-right { display: flex; align-items: center; gap: 10px; }

.icon-btn {
  display: grid; place-items: center;
  width: 38px; height: 38px;
  border-radius: 9px;
  border: 1px solid var(--line);
  background: var(--bg-1);
  color: var(--text-dim);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s, transform 0.2s;
}
.icon-btn:hover { color: var(--text); border-color: var(--line-strong, var(--text-faint)); transform: translateY(-1px); }
.icon-btn svg { width: 17px; height: 17px; }
.icon-btn .sun, .icon-btn .sys { display: none; }
[data-theme-pref="light"] .icon-btn .sun { display: block; }
[data-theme-pref="light"] .icon-btn .moon { display: none; }
[data-theme-pref="system"] .icon-btn .sys { display: block; }
[data-theme-pref="system"] .icon-btn .moon { display: none; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55em;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  font-weight: 500;
  padding: 10px 16px;
  border-radius: 9px;
  border: 1px solid var(--line);
  background: var(--bg-1);
  color: var(--text);
  cursor: pointer;
  transition: transform 0.2s, border-color 0.2s, background 0.2s, color 0.2s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); border-color: var(--accent-edge); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.primary:hover { filter: brightness(1.06); }
.btn svg { width: 15px; height: 15px; }

@media (max-width: 860px) { .nav-links { display: none; } }

/* ============================================================
   hero
   ============================================================ */
.hero { padding-top: clamp(120px, 18vh, 190px); padding-bottom: var(--section-pad); }
.hero-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.9fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}
.status {
  display: inline-flex; align-items: center; gap: 0.6em;
  font-family: var(--font-mono); font-size: 0.78rem;
  color: var(--text-dim);
  padding: 6px 12px 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--bg-1);
  margin-bottom: 1.8rem;
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: oklch(0.78 0.16 152); position: relative; }
.dot::after {
  content: ""; position: absolute; inset: -4px; border-radius: 50%;
  background: oklch(0.78 0.16 152 / 0.5); animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse { 0% { transform: scale(0.6); opacity: 0.8; } 100% { transform: scale(2.2); opacity: 0; } }

.hero h1 {
  font-size: clamp(2.5rem, 6.6vw, 4.7rem);
  letter-spacing: -0.035em;
  margin-bottom: 1.4rem;
}
.hero h1 .accent { color: var(--accent); }
.hero h1 .line { display: block; }
.hero-lead {
  font-size: clamp(1.05rem, 1.7vw, 1.28rem);
  color: var(--text-dim);
  max-width: 52ch;
  margin-bottom: 2.2rem;
}
.hero-lead strong { color: var(--text); font-weight: 600; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.hero-meta {
  margin-top: 2.6rem;
  display: flex; flex-wrap: wrap; gap: 1.6rem 2.4rem;
  font-family: var(--font-mono); font-size: 0.82rem; color: var(--text-faint);
}
.hero-meta span { white-space: nowrap; }
.hero-meta b { display: block; color: var(--text); font-weight: 500; font-size: 1.45rem; font-family: var(--font-display); letter-spacing: -0.02em; white-space: nowrap; }

/* terminal card */
.term {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in oklab, var(--bg-1) 80%, var(--bg));
  box-shadow: var(--shadow);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.84rem;
}
.term-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--line-soft);
  background: var(--bg-2);
}
.term-bar i { width: 11px; height: 11px; border-radius: 50%; background: var(--line); display: inline-block; }
.term-bar i:nth-child(1) { background: oklch(0.7 0.17 28); }
.term-bar i:nth-child(2) { background: oklch(0.82 0.15 85); }
.term-bar i:nth-child(3) { background: oklch(0.78 0.16 152); }
.term-bar span { margin-left: auto; color: var(--text-faint); font-size: 0.74rem; }
.term-body { padding: 18px 18px 22px; line-height: 1.85; }
.term-body .ln { white-space: pre-wrap; }
.term-body .pr { color: var(--accent); }
.term-body .cm { color: var(--text-faint); }
.term-body .ky { color: var(--text-dim); }
.term-body .vl { color: var(--text); }
.term-body .str { color: oklch(0.8 0.13 152); }
[data-theme="light"] .term-body .str { color: oklch(0.5 0.14 152); }
.term-body .cur { display: inline-block; width: 8px; height: 1.05em; vertical-align: -0.18em; background: var(--accent); animation: blink 1.1s steps(1) infinite; }

.avatar-slot {
  margin-top: 14px;
  display: flex; align-items: center; gap: 14px;
  padding: 12px;
  border: 1px dashed var(--line);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-faint);
}
.avatar-slot image-slot { width: 64px; height: 64px; flex: none; }

@media (max-width: 880px) {
  .hero-grid { grid-template-columns: 1fr; }
  .term { order: -1; }
}

/* ============================================================
   generic section header band
   ============================================================ */
.band { padding-block: var(--section-pad); border-top: 1px solid var(--line-soft); }

/* ---------- about ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 0.85fr; gap: clamp(36px, 6vw, 80px); align-items: start; }
.about-body p { font-size: 1.12rem; color: var(--text-dim); margin-bottom: 1.3rem; max-width: 60ch; }
.about-body p strong { color: var(--text); font-weight: 600; }
.about-body p:first-child { font-size: 1.32rem; color: var(--text); line-height: 1.5; letter-spacing: -0.01em; }
.about-side { display: flex; flex-direction: column; gap: 18px; position: sticky; top: 92px; }
.portrait { display: block; width: 100%; height: clamp(380px, 30vw, 470px); border: 1px solid var(--line); box-shadow: var(--shadow); border-radius: var(--radius); overflow: hidden; }
img.portrait { object-fit: cover; }
.portrait--empty { display: flex; align-items: center; justify-content: center; background:
  repeating-linear-gradient(45deg, var(--bg-2), var(--bg-2) 11px, var(--bg-1) 11px, var(--bg-1) 22px); }
.portrait--empty span { font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-faint); letter-spacing: 0.04em; }
.facts { display: flex; flex-direction: column; gap: 2px; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--bg-1); }
.fact { display: flex; justify-content: space-between; gap: 1rem; padding: 16px 18px; border-bottom: 1px solid var(--line-soft); }
.fact:last-child { border-bottom: 0; }
.fact .k { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-faint); }
.fact .v { font-family: var(--font-mono); font-size: 0.82rem; color: var(--text); text-align: right; }
@media (max-width: 820px) { .about-grid { grid-template-columns: 1fr; } .about-side { position: static; } .portrait { height: 280px; } }

/* ============================================================
   experience timeline
   ============================================================ */
.timeline { display: flex; flex-direction: column; }
.job {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: clamp(20px, 4vw, 56px);
  padding: 30px 0;
  border-top: 1px solid var(--line-soft);
  position: relative;
}
.job:hover .job-role { color: var(--accent); }
.job-when { font-family: var(--font-mono); font-size: 0.82rem; color: var(--text-faint); padding-top: 4px; }
.job-when .now { color: var(--accent); }
.job-role { font-family: var(--font-display); font-size: 1.35rem; font-weight: 600; letter-spacing: -0.02em; transition: color 0.25s; }
.job-co { font-family: var(--font-mono); font-size: 0.86rem; color: var(--text-dim); margin: 4px 0 14px; }
.job ul { list-style: none; display: flex; flex-direction: column; gap: 9px; max-width: 68ch; }
.job li { position: relative; padding-left: 1.3em; color: var(--text-dim); font-size: 0.99rem; }
.job li::before { content: "—"; position: absolute; left: 0; color: var(--accent); }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.tag {
  font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-dim);
  padding: 4px 9px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg-1);
}
@media (max-width: 720px) { .job { grid-template-columns: 1fr; gap: 10px; } }

/* ============================================================
   projects
   ============================================================ */
.proj-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.proj {
  display: flex; flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-1);
  padding: 26px;
  transition: transform 0.28s ease, border-color 0.28s ease, background 0.28s ease;
  position: relative;
  overflow: hidden;
  min-height: 230px;
}
.proj::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(420px 200px at 100% 0%, var(--accent-wash), transparent 70%);
  opacity: 0; transition: opacity 0.3s ease;
}
.proj:hover { transform: translateY(-4px); border-color: var(--accent-edge); }
.proj:hover::after { opacity: 1; }
.proj.feat { grid-column: span 2; min-height: 200px; }
.proj-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; margin-bottom: 14px; }
.proj-ix { font-family: var(--font-mono); font-size: 0.74rem; color: var(--text-faint); }
.proj-link { font-family: var(--font-mono); font-size: 0.76rem; color: var(--accent); display: inline-flex; align-items: center; gap: 0.4em; }
.proj-link svg { width: 13px; height: 13px; }
.proj h3 { font-size: 1.4rem; margin-bottom: 9px; }
.proj p { color: var(--text-dim); font-size: 0.99rem; margin-bottom: auto; max-width: 62ch; }
.proj .tags { margin-top: 18px; }
.proj.feat .proj-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
@media (max-width: 760px) {
  .proj-grid { grid-template-columns: 1fr; }
  .proj.feat, .proj.feat .proj-inner { grid-column: auto; grid-template-columns: 1fr; }
}

/* ============================================================
   hardware band (highlight)
   ============================================================ */
.hw { background: var(--bg-1); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.hw-grid { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: clamp(32px, 5vw, 70px); align-items: center; }
.hw h2 { font-size: clamp(1.9rem, 4vw, 2.9rem); margin-bottom: 1.2rem; }
.hw p { color: var(--text-dim); font-size: 1.1rem; max-width: 50ch; }
.hw-stat { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.hw-card { border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; background: var(--bg-2); }
.hw-card .big { font-family: var(--font-display); font-size: 2rem; font-weight: 600; letter-spacing: -0.02em; }
.hw-card .lbl { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-dim); margin-top: 6px; }
.hw-card .accent { color: var(--accent); }
@media (max-width: 820px) { .hw-grid { grid-template-columns: 1fr; } }

/* ============================================================
   skills
   ============================================================ */
.skill-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.skill-col { border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; background: var(--bg-1); }
.skill-col h4 { font-family: var(--font-mono); font-weight: 500; font-size: 0.78rem; letter-spacing: 0.04em; color: var(--accent); margin-bottom: 16px; text-transform: lowercase; }
.skill-col h4::before { content: "// "; color: var(--text-faint); }
.chips { display: flex; flex-wrap: wrap; gap: 7px; }
.chip { font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-dim); padding: 6px 11px; border: 1px solid var(--line-soft); border-radius: 7px; background: var(--bg-2); transition: color 0.2s, border-color 0.2s; }
.chip:hover { color: var(--text); border-color: var(--accent-edge); }
@media (max-width: 820px) { .skill-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 540px) { .skill-grid { grid-template-columns: 1fr; } }

/* ============================================================
   education
   ============================================================ */
.edu { display: flex; flex-direction: column; }
.edu-row { display: grid; grid-template-columns: 150px 1fr auto; gap: clamp(16px, 3vw, 40px); padding: 24px 0; border-top: 1px solid var(--line-soft); align-items: baseline; }
.edu-row .yr { font-family: var(--font-mono); font-size: 0.82rem; color: var(--text-faint); }
.edu-row .deg { font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; letter-spacing: -0.01em; }
.edu-row .sch { font-family: var(--font-mono); font-size: 0.84rem; color: var(--text-dim); margin-top: 5px; }
.edu-row .loc { font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-faint); text-align: right; }
@media (max-width: 720px) { .edu-row { grid-template-columns: 1fr; gap: 6px; } .edu-row .loc { text-align: left; } }

/* ============================================================
   contact / footer
   ============================================================ */
.contact { padding-block: clamp(90px, 13vw, 170px); text-align: center; border-top: 1px solid var(--line-soft); }
.contact h2 { font-size: clamp(2.2rem, 6vw, 4.2rem); letter-spacing: -0.035em; margin: 1rem auto 1.6rem; max-width: 16ch; }
.contact h2 .accent { color: var(--accent); }
.contact .lead { color: var(--text-dim); font-size: 1.12rem; max-width: 48ch; margin: 0 auto 2.4rem; }
.contact-cta { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.socials { margin-top: 3.4rem; display: flex; flex-wrap: wrap; gap: 10px 26px; justify-content: center; font-family: var(--font-mono); font-size: 0.84rem; }
.socials a { color: var(--text-dim); display: inline-flex; align-items: center; gap: 0.5em; transition: color 0.2s; }
.socials a:hover { color: var(--accent); }
.socials a .n { color: var(--text-faint); }

footer { border-top: 1px solid var(--line-soft); padding: 26px var(--gutter); }
.foot-in { max-width: var(--maxw); margin-inline: auto; display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-faint); }

/* ============================================================
   scroll reveal
   ============================================================ */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s cubic-bezier(0.16,1,0.3,1), transform 0.7s cubic-bezier(0.16,1,0.3,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: 0.08s; }
.reveal[data-d="2"] { transition-delay: 0.16s; }
.reveal[data-d="3"] { transition-delay: 0.24s; }
.reveal[data-d="4"] { transition-delay: 0.32s; }

/* motion off */
body.motion-off *,
body.motion-off *::before,
body.motion-off *::after { animation: none !important; transition: none !important; }
body.motion-off .reveal { opacity: 1 !important; transform: none !important; }
body.motion-off .dot::after { display: none; }