/* =======================================================================
   Victor Youk — Portfolio
   Design tokens
   ======================================================================= */
:root {
  /* Surfaces */
  --bg: #0a0b0d;          /* void black                          */
  --bg-2: #0e1013;        /* slightly raised                     */
  --line: rgba(255, 255, 255, 0.09);       /* hairline           */
  --line-strong: rgba(255, 255, 255, 0.16);
  --glass: rgba(255, 255, 255, 0.028);     /* glassmorphism fill  */
  --glass-hover: rgba(255, 255, 255, 0.05);

  /* Ink */
  --text: #eceded;
  --muted: #888e98;
  --muted-2: #565c66;

  /* Accents */
  --accent: #ff6b2c;                       /* molten orange — hero */
  --accent-ink: #ff8352;
  --accent-soft: rgba(255, 107, 44, 0.14);
  --accent-line: rgba(255, 107, 44, 0.45);
  --blueprint: #37c9bd;                    /* muted cyan — data ink */
  --blueprint-soft: rgba(55, 201, 189, 0.12);

  /* Type */
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  /* Metrics */
  --maxw: 1160px;
  --radius: 14px;
  --radius-sm: 8px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* =======================================================================
   Reset / base
   ======================================================================= */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Layered ambient glow beneath everything */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -3;
  background:
    radial-gradient(1100px 620px at 82% -8%, rgba(255, 107, 44, 0.11), transparent 60%),
    radial-gradient(820px 520px at -5% 15%, rgba(55, 201, 189, 0.06), transparent 55%),
    var(--bg);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

/* =======================================================================
   Ambient layers: canvas + blueprint grid
   ======================================================================= */
.lattice-canvas {
  position: fixed;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  display: block;
}

/* Faint CSS graph-paper, masked so it fades toward the edges */
.blueprint {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.35;
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 30%, transparent 78%);
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 30%, transparent 78%);
}

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

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--blueprint);
}

.skip-link {
  position: fixed;
  top: 0.5rem;
  left: 0.5rem;
  z-index: 200;
  background: var(--accent);
  color: #0a0b0d;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transform: translateY(-160%);
  transition: transform 0.2s var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* Scroll progress bar */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-ink));
  z-index: 120;
  box-shadow: 0 0 12px var(--accent-line);
}

/* Bracketed registration corners on cards */
.corner {
  position: absolute;
  width: 14px;
  height: 14px;
  border-color: var(--line-strong);
  pointer-events: none;
  transition: border-color 0.35s var(--ease);
}
.corner--tl { top: 12px; left: 12px; border-top: 1px solid; border-left: 1px solid; }
.corner--br { bottom: 12px; right: 12px; border-bottom: 1px solid; border-right: 1px solid; }

/* =======================================================================
   Buttons
   ======================================================================= */
.btn {
  --pad-y: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: var(--pad-y) 1.4rem;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  font-weight: 500;
  border: 1px solid transparent;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease),
    border-color 0.25s var(--ease), box-shadow 0.25s var(--ease), color 0.25s var(--ease);
  white-space: nowrap;
}
.btn i { font-size: 0.9em; transition: transform 0.25s var(--ease); }

.btn--accent {
  background: var(--accent);
  color: #0a0b0d;
  font-weight: 600;
  box-shadow: 0 6px 24px -8px var(--accent-line);
}
.btn--accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px -8px var(--accent-line);
}
.btn--accent:hover i { transform: translateX(3px); }

.btn--ghost {
  background: var(--glass);
  border-color: var(--line-strong);
  color: var(--text);
  backdrop-filter: blur(8px);
}
.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent-ink);
  transform: translateY(-2px);
}

.btn--sm { --pad-y: 0.55rem; padding-inline: 1rem; font-size: 0.75rem; }
.btn--block { width: 100%; justify-content: center; }

/* =======================================================================
   Navigation
   ======================================================================= */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease),
    backdrop-filter 0.3s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(10, 11, 13, 0.72);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}
.nav__inner {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 0.9rem clamp(1.25rem, 4vw, 2.5rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav__brand { display: flex; align-items: center; gap: 0.7rem; }
.nav__mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  color: #0a0b0d;
  background: var(--accent);
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  box-shadow: 0 6px 18px -8px var(--accent-line);
}
.nav__brand-meta { display: flex; flex-direction: column; line-height: 1.15; }
.nav__brand-name { font-family: var(--font-display); font-weight: 600; font-size: 0.95rem; }
.nav__brand-role {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.nav__links { display: flex; align-items: center; gap: 1.9rem; }
.nav__links a {
  font-size: 0.9rem;
  color: var(--muted);
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  transition: color 0.2s var(--ease);
  position: relative;
}
.nav__links a .idx {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--muted-2);
  transition: color 0.2s var(--ease);
}
.nav__links a:hover,
.nav__links a.is-active { color: var(--text); }
.nav__links a:hover .idx,
.nav__links a.is-active .idx { color: var(--accent); }

.nav__right { display: flex; align-items: center; gap: 0.75rem; }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  padding: 6px;
}
.nav__toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.2s var(--ease);
}
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =======================================================================
   Hero
   ======================================================================= */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 6rem;
  padding-bottom: 5rem;
}
.hero__inner { max-width: 860px; }

.hero__status { display: inline-flex; align-items: center; gap: 0.6rem; margin-bottom: 1.75rem; }
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 var(--accent-line);
  animation: pulse 2.4s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(255, 107, 44, 0.5); }
  70% { box-shadow: 0 0 0 9px rgba(255, 107, 44, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 107, 44, 0); }
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.02em;
}
.hero__hi {
  display: block;
  font-size: clamp(1.2rem, 3.5vw, 1.8rem);
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 0.35rem;
}
.hero__name {
  display: block;
  font-size: clamp(3rem, 11vw, 7.2rem);
  color: var(--text);
}
.hero__period { color: var(--accent); }

/* Dimension-line flourish under the name */
.dimension {
  position: relative;
  height: 22px;
  max-width: 340px;
  margin: 1.4rem 0 1.75rem;
}
.dimension::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--blueprint-soft);
}
.dimension::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 8px;
  transform: translateY(-50%);
  border-left: 1px solid var(--blueprint);
  border-right: 1px solid var(--blueprint);
}
.dimension__label {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--bg);
  padding: 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  color: var(--blueprint);
}

.hero__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1.75rem;
}
.hero__tags li {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--text);
  background: var(--glass);
}

.hero__lede {
  max-width: 60ch;
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  color: var(--muted);
  margin-bottom: 2.25rem;
}
.hero__lede strong { color: var(--text); }

.hero__cta { display: flex; flex-wrap: wrap; gap: 0.9rem; }

.hero__scroll {
  position: absolute;
  bottom: 1.75rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.24em;
  color: var(--muted-2);
}
.hero__scroll i { animation: bob 2s var(--ease) infinite; }
@keyframes bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(5px); } }

/* =======================================================================
   Sections (shared)
   ======================================================================= */
.section { padding-block: clamp(4.5rem, 10vw, 8rem); position: relative; }

.section__head { max-width: 640px; margin-bottom: 3.25rem; }
.section__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2rem, 5vw, 3.1rem);
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0.75rem 0 0.9rem;
}
.section__sub { color: var(--muted); font-size: 1.02rem; max-width: 52ch; }

/* =======================================================================
   Capabilities / skills
   ======================================================================= */
.skills { display: grid; gap: 1rem; }

.skill {
  position: relative;
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem 1.6rem;
  backdrop-filter: blur(10px);
  transition: border-color 0.35s var(--ease), background 0.35s var(--ease),
    transform 0.35s var(--ease);
}
.skill:hover {
  border-color: var(--line-strong);
  background: var(--glass-hover);
  transform: translateY(-2px);
}
.skill__head {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  flex-wrap: wrap;
}
.skill__idx {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted-2);
  letter-spacing: 0.08em;
}
.skill__icon {
  color: var(--accent);
  font-size: 1.05rem;
  width: 1.4rem;
  text-align: center;
}
.skill__title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  flex: 1 1 auto;
}
.skill__grade {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blueprint);
  border: 1px solid var(--blueprint-soft);
  padding: 0.22rem 0.6rem;
  border-radius: 999px;
}
.skill__desc {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 0.85rem 0 1.1rem;
  max-width: 68ch;
}

/* Animated capability meter */
.meter {
  height: 4px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  overflow: hidden;
}
.meter__fill {
  height: 100%;
  width: 0;                         /* animated to data-level% via JS */
  background: linear-gradient(90deg, var(--accent), var(--accent-ink));
  border-radius: 999px;
  transition: width 1.2s var(--ease);
  box-shadow: 0 0 10px var(--accent-line);
}

/* =======================================================================
   Projects
   ======================================================================= */
.project {
  position: relative;
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.6rem, 3vw, 2.4rem);
  backdrop-filter: blur(10px);
  overflow: hidden;
  transition: border-color 0.35s var(--ease), background 0.35s var(--ease),
    transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.project::after {
  /* accent wash that reveals on hover */
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(600px 220px at 100% 0%, var(--accent-soft), transparent 65%);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  pointer-events: none;
}
.project:hover {
  border-color: var(--accent-line);
  transform: translateY(-4px);
  box-shadow: 0 24px 50px -30px rgba(0, 0, 0, 0.9);
}
.project:hover::after { opacity: 1; }
.project:hover .corner { border-color: var(--accent); }

.project__topline {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.tag--part {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: #0a0b0d;
  background: var(--accent);
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-weight: 600;
}
.project__cat {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}
.project__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  letter-spacing: -0.01em;
  line-height: 1.15;
  margin-bottom: 0.85rem;
}
.project__desc { color: var(--muted); font-size: 0.98rem; max-width: 62ch; }

.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.25rem; }
.chips li {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.03em;
  color: var(--text);
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
}

/* Spec sheet */
.specs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.spec { background: var(--bg-2); padding: 0.9rem 1.1rem; }
.spec dt {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted-2);
  margin-bottom: 0.3rem;
}
.spec dd {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text);
}

/* Featured build: content + spec column */
.project--feature {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
  margin-bottom: 1.25rem;
}
.project--feature .specs { align-self: stretch; }

/* Secondary grid */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}
.specs--inline {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 1.25rem;
}

/* =======================================================================
   Contact
   ======================================================================= */
.contact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.75rem, 5vw, 4rem);
  align-items: start;
}
.contact__intro .section__title { margin-top: 0.75rem; }

.contact__links { list-style: none; margin-top: 2rem; display: grid; gap: 0.6rem; }
.contact__links a {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.9rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--glass);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease),
    transform 0.25s var(--ease);
}
.contact__links a > span { flex: 1; }
.contact__links a > i:first-child { color: var(--accent); width: 1.2rem; text-align: center; }
.contact__links a .link-out { color: var(--muted-2); font-size: 0.75rem; }
.contact__links a:hover {
  border-color: var(--accent-line);
  background: var(--glass-hover);
  transform: translateX(4px);
}

/* Work-order form */
.form {
  position: relative;
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.6rem, 3.5vw, 2.4rem);
  backdrop-filter: blur(10px);
}
.form__meta {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  color: var(--muted-2);
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px dashed var(--line);
}
.field { margin-bottom: 1.15rem; }
.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.5rem;
}
.field input,
.field textarea {
  width: 100%;
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  resize: vertical;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.field input::placeholder,
.field textarea::placeholder { color: var(--muted-2); }
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.form__status {
  margin-top: 1rem;
  min-height: 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--blueprint);
}

/* =======================================================================
   Footer
   ======================================================================= */
.footer { border-top: 1px solid var(--line); padding-block: 2.5rem; }
.footer__inner {
  display: flex;
  align-items: center;
  gap: 1rem 1.5rem;
  flex-wrap: wrap;
  justify-content: space-between;
}
.footer__mark {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.06em;
}
.footer__copy { color: var(--muted); font-size: 0.9rem; }
.footer__meta {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--muted-2);
}

/* =======================================================================
   Scroll-reveal
   ======================================================================= */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: none; }

/* Focus visibility */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* =======================================================================
   Responsive
   ======================================================================= */
@media (max-width: 860px) {
  .nav__links {
    position: absolute;
    inset: 0 0 auto 0;
    top: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: rgba(10, 11, 13, 0.96);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    padding: 0.5rem clamp(1.25rem, 4vw, 2.5rem) 1.25rem;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease);
  }
  .nav__links.is-open { opacity: 1; transform: translateY(0); pointer-events: auto; }
  .nav__links a { width: 100%; padding: 0.9rem 0; border-bottom: 1px solid var(--line); }
  .nav__toggle { display: flex; }
  .nav__right .btn--ghost { display: none; }

  .project--feature { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: 1fr; }
  .contact { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .specs { grid-template-columns: 1fr; }
  .hero__scroll { display: none; }
  .footer__inner { flex-direction: column; align-items: flex-start; }
}

/* =======================================================================
   Reduced motion
   ======================================================================= */
@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;
  }
  .reveal { opacity: 1; transform: none; }
}