/* ============ Theme ============ */
:root {
  --bg:        #0c0c0e;
  --bg-glow:   #141418;
  --surface:   #141417;
  --surface-2: #1a1a1f;
  --border:    #26262d;
  --text:      #ededf1;
  --text-dim:  #a2a2ad;
  --text-faint:#6a6a76;
  --radius:    18px;
  --maxw:      1080px;
  --ease:      cubic-bezier(.22,.61,.36,1);
  /* Avant Garde for short namings only; Century Gothic = local clone (Windows),
     Jost = free geometric web fallback for other visitors. */
  --font-display: 'ITC Avant Garde Gothic', 'Avant Garde', 'Century Gothic',
                  'URW Gothic', 'Jost', system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(900px 600px at 85% -5%, var(--bg-glow), transparent 70%),
    radial-gradient(700px 500px at -10% 110%, #101015, transparent 70%),
    var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

.mono { font-family: 'JetBrains Mono', ui-monospace, 'Cascadia Code', monospace; }

a { color: inherit; text-decoration: none; }

.page {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(2rem, 6vw, 5.5rem) clamp(1.2rem, 5vw, 2.5rem) 4rem;
}

/* ============ Hero ============ */
.hero {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
  padding-bottom: clamp(3rem, 8vw, 6rem);
}

.hero__name {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5.5vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0;
  line-height: 1.05;
}

.hero__name-ru {
  font-family: var(--font-display);
  color: var(--text-faint);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  font-weight: 500;
  margin: .4rem 0 0;
  letter-spacing: 0;
}

/* socials */
.socials {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-top: 1.8rem;
}
.social {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .5rem .85rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-dim);
  font-size: .9rem;
  font-weight: 500;
  transition: color .25s var(--ease), border-color .25s var(--ease),
              background .25s var(--ease), transform .25s var(--ease);
}
.social:hover {
  color: var(--text);
  border-color: #3a3a44;
  background: var(--surface-2);
  transform: translateY(-2px);
}
.social svg { display: block; }

/* bio */
.hero__bio { padding-top: .4rem; }
.hero__bio p { margin: 0 0 1rem; font-size: 1.05rem; }
.hero__bio strong { color: var(--text); font-weight: 600; }
.hero__bio-dim { color: var(--text-dim); font-size: .98rem !important; }
.hero__bio .mono { color: var(--text); font-size: .9em; }

/* ============ Section head ============ */
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.section-head h2 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .15em;
  color: var(--text-dim);
  margin: 0;
}

/* ============ Projects ============ */
.projects {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.project {
  /* dither matches the card colour so the image dissolves into the board */
  --ditherc: var(--surface);
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: clamp(1.2rem, 4vw, 3rem);
  align-items: center;
  padding: clamp(1.3rem, 3vw, 2rem);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  /* resting colour identity: each card already carries its hue, just muted */
  background:
    radial-gradient(135% 150% at 100% 0%,
        color-mix(in srgb, var(--accent) 7%, transparent), transparent 52%),
    var(--surface);
  overflow: hidden;
  transition: transform .35s var(--ease), border-color .35s var(--ease),
              box-shadow .35s var(--ease), background .35s var(--ease);
}
.project--reverse .project__visual { order: 2; }

/* color identity at rest: a faint accent wash on the edge */
.project::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(120deg,
              color-mix(in srgb, var(--accent) 45%, transparent),
              transparent 42%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  opacity: .7;
  transition: opacity .35s var(--ease);
  pointer-events: none;
}

/* hover: light up in the accent colour + lift */
.project:hover,
.project:focus-visible {
  --ditherc: var(--surface-2);
  transform: translateY(-6px);
  border-color: color-mix(in srgb, var(--accent) 60%, var(--border));
  background:
    radial-gradient(120% 140% at 100% 0%,
        color-mix(in srgb, var(--accent) 14%, transparent), transparent 55%),
    var(--surface-2);
  box-shadow:
    0 1px 0 color-mix(in srgb, var(--accent) 50%, transparent) inset,
    0 24px 60px -28px color-mix(in srgb, var(--accent) 90%, transparent),
    0 8px 24px -16px rgba(0,0,0,.6);
  outline: none;
}
.project:hover::before,
.project:focus-visible::before { opacity: 1; }

/* visual */
.project__visual {
  position: relative;
  aspect-ratio: 16 / 11;
  border-radius: 12px;
  overflow: hidden;
}

/* the image sits behind everything and is fully shown where the dither clears */
.project__img {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background:
    radial-gradient(120% 120% at 50% 35%,
        color-mix(in srgb, var(--accent) 12%, var(--bg)), var(--bg));
}
.project__img svg { width: 72%; height: 72%; }
.project__img img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* halftone dither: solid card colour at the text edge → big dots → smaller →
   sparser → gone, so the image emerges. Dots are painted in the card colour
   so the image dissolves seamlessly into the card background. */
.project__dither {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(to left,
      var(--ditherc) 0%, var(--ditherc) 4%, transparent 12%);
}
.project--reverse .project__dither { transform: scaleX(-1); }

/* on hover the dither vanishes instantly, revealing the full image */
.project:hover .project__dither,
.project:focus-visible .project__dither { opacity: 0; }

.dband {
  position: absolute;
  inset: 0;
  background-repeat: repeat;
}
.dband--lg {
  background-image: radial-gradient(circle, var(--ditherc) 2.3px, transparent 2.8px);
  background-size: 6px 6px;
  -webkit-mask-image: linear-gradient(to left, #000 0%, #000 7%, transparent 16%);
          mask-image: linear-gradient(to left, #000 0%, #000 7%, transparent 16%);
}
.dband--md {
  background-image: radial-gradient(circle, var(--ditherc) 1.7px, transparent 2.1px);
  background-size: 9px 9px;
  -webkit-mask-image: linear-gradient(to left, transparent 5%, #000 13%, transparent 22%);
          mask-image: linear-gradient(to left, transparent 5%, #000 13%, transparent 22%);
}
.dband--sm {
  background-image: radial-gradient(circle, var(--ditherc) 1.0px, transparent 1.5px);
  background-size: 13px 13px;
  -webkit-mask-image: linear-gradient(to left, transparent 13%, #000 20%, transparent 30%);
          mask-image: linear-gradient(to left, transparent 13%, #000 20%, transparent 30%);
}

/* svg theming */
.vline   { fill: none; stroke: var(--text-faint); stroke-width: 4; transition: stroke .35s var(--ease); }
.vdash   { fill: none; stroke: var(--text-faint); stroke-width: 4; stroke-dasharray: 6 8; stroke-linecap: round; transition: stroke .35s var(--ease); }
.vfill   { fill: var(--accent); opacity: .85; }
.vflame  { fill: var(--accent); opacity: .9; }
.vdot    { fill: var(--text-faint); transition: fill .35s var(--ease); }
.project:hover .vline,
.project:hover .vdash { stroke: color-mix(in srgb, var(--accent) 75%, var(--text)); }
.project:hover .vdot  { fill: var(--accent); }

/* body */
.project__tag {
  display: inline-block;
  font-size: .78rem;
  color: var(--text-faint);
  letter-spacing: .02em;
  margin-bottom: .7rem;
  transition: color .35s var(--ease);
}
.project:hover .project__tag { color: color-mix(in srgb, var(--accent) 80%, var(--text)); }

.project__title {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.4vw, 1.6rem);
  font-weight: 600;
  letter-spacing: -0.005em;
  margin: 0 0 .7rem;
  line-height: 1.2;
}
.project__desc {
  color: var(--text-dim);
  font-size: .98rem;
  margin: 0;
}
.project__cta {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  margin-top: 1.1rem;
  font-size: .9rem;
  font-weight: 600;
  color: var(--text-faint);
  transition: color .35s var(--ease);
}
.project:hover .project__cta { color: var(--accent); }
.project__cta .arrow { transition: transform .35s var(--ease); }
.project:hover .project__cta .arrow { transform: translateX(5px); }

/* ============ Responsive ============ */
@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; }
  .project,
  .project--reverse { grid-template-columns: 1fr; }
  .project--reverse .project__visual { order: 0; }
  .project__visual { aspect-ratio: 16 / 9; }

  /* stacked: image on top, text below → dither fades toward the bottom edge */
  .project__dither,
  .project--reverse .project__dither {
    transform: none;
    background: linear-gradient(to bottom,
        transparent 80%, var(--ditherc) 94%, var(--ditherc) 100%);
  }
  .dband--lg {
    -webkit-mask-image: linear-gradient(to bottom, transparent 80%, #000 93%, #000 100%);
            mask-image: linear-gradient(to bottom, transparent 80%, #000 93%, #000 100%);
  }
  .dband--md {
    -webkit-mask-image: linear-gradient(to bottom, transparent 74%, #000 87%, transparent 98%);
            mask-image: linear-gradient(to bottom, transparent 74%, #000 87%, transparent 98%);
  }
  .dband--sm {
    -webkit-mask-image: linear-gradient(to bottom, transparent 68%, #000 82%, transparent 94%);
            mask-image: linear-gradient(to bottom, transparent 68%, #000 82%, transparent 94%);
  }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
  html { scroll-behavior: auto; }
}

/* ============ Project sub-page ============ */
.back {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  color: var(--text-dim);
  font-size: .9rem;
  font-weight: 500;
  margin-bottom: 2.5rem;
  transition: color .25s var(--ease), gap .25s var(--ease);
}
.back:hover { color: var(--text); gap: .75rem; }

.proj-hero { max-width: 760px; }
.proj-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--accent);
  margin-bottom: 1rem;
}
.proj-eyebrow .dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 14px 1px color-mix(in srgb, var(--accent) 90%, transparent);
}
.proj-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.08;
  margin: 0 0 1rem;
}
.proj-lede {
  font-size: 1.15rem;
  color: var(--text-dim);
  margin: 0 0 1.8rem;
}
.proj-tags { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 2rem; }
.chip {
  font-size: .8rem;
  padding: .35rem .75rem;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent) 40%, var(--border));
  color: color-mix(in srgb, var(--accent) 75%, var(--text));
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}
.proj-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-bottom: 3rem; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .7rem 1.2rem;
  border-radius: 11px;
  font-weight: 600;
  font-size: .92rem;
  border: 1px solid var(--border);
  color: var(--text);
  transition: transform .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn--primary {
  border-color: color-mix(in srgb, var(--accent) 60%, transparent);
  background: color-mix(in srgb, var(--accent) 16%, transparent);
}
.btn--primary:hover { background: color-mix(in srgb, var(--accent) 26%, transparent); }

.proj-soon {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem 1.6rem;
  border: 1px dashed color-mix(in srgb, var(--accent) 35%, var(--border));
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--accent) 5%, var(--surface));
  color: var(--text-dim);
  max-width: 760px;
}
.proj-soon .soon-icon {
  flex: none;
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: 11px;
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  color: var(--accent);
  font-size: 1.3rem;
}
.proj-soon strong { color: var(--text); display: block; margin-bottom: .15rem; }