@import url('https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&family=Inter:wght@300;400;500;600&family=Space+Grotesk:wght@500;700&display=swap');

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

:root {
  --bg:      #080808;
  --text:    #F2F2F2;
  --dim:     #777;
  --sky:     #8ecae6;
  --teal:    #219ebc;
  --deep:    #023047;
  --amber:   #ffb703;
  --orange:  #fb8500;
  --nav-h:   64px;
  --mono:    'Space Mono', monospace;
  --body:    'Inter', sans-serif;
  --display: 'Space Grotesk', sans-serif;
  --grad:    linear-gradient(90deg, var(--orange) 0%, var(--amber) 30%, var(--sky) 68%, var(--teal) 100%);
  --border-t: rgba(33, 158, 188, 0.2);
  --border-d: rgba(2, 48, 71, 0.55);
  --border-o: rgba(251, 133, 0, 0.3);
}

html { scroll-behavior: smooth; }

/* ── intro overlay ──────────────────────────────────────────────────────────
   Two black halves (eyelids) cover the viewport from first paint. A centered
   typewriter types "Hello World!". After a short hold, halves slide apart
   vertically — like eyes opening — to reveal the site. */

#intro-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: transparent;
  overflow: hidden;
  pointer-events: auto;
}

.intro-half {
  position: absolute;
  left: 0;
  width: 100%;
  height: 50%;
  background: #080808;
  will-change: transform;
}
.intro-top    { top: 0; }
.intro-bottom { bottom: 0; }

/* Eyelids: two quick blinks (partial open → close) then a full sweep open. */
@keyframes eyelid-top {
  0%   { transform: translateY(0);       }
  12%  { transform: translateY(-20%);    }   /* blink 1 — small */
  22%  { transform: translateY(0);       }   /* fully close */
  40%  { transform: translateY(-55%);    }   /* blink 2 — much wider */
  52%  { transform: translateY(-15%);    }   /* partial close, not all the way */
  100% { transform: translateY(-100%);   }   /* fully open */
}
@keyframes eyelid-bottom {
  0%   { transform: translateY(0);       }
  12%  { transform: translateY( 20%);    }
  22%  { transform: translateY(0);       }
  40%  { transform: translateY( 55%);    }
  52%  { transform: translateY( 15%);    }
  100% { transform: translateY( 100%);   }
}

#intro-overlay.revealing .intro-top    { animation: eyelid-top    2.4s ease-in-out forwards; }
#intro-overlay.revealing .intro-bottom { animation: eyelid-bottom 2.4s ease-in-out forwards; }

#intro-overlay.gone { display: none; }

#intro-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
  font-family: var(--mono);
  font-size: clamp(1.6rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  white-space: nowrap;
  transition: opacity 0.3s ease;
}

.intro-chars {
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
          background-clip: text;
  color: transparent;
}

#intro-overlay.fading-text #intro-text { opacity: 0; }

.intro-cursor {
  display: inline-block;
  width: 0.55em;
  height: 1.05em;
  background: var(--amber);
  margin-left: 0.08em;
  vertical-align: text-bottom;
  animation: intro-blink 0.65s steps(1) infinite;
}

@keyframes intro-blink { 50% { opacity: 0; } }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  overflow-x: hidden;
  min-height: 100vh;
}

/* ── gradient text ── */
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.accent-orange { color: var(--orange); }
.accent-turq   { color: var(--teal); }

/* ── nav ── */
#site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2.5rem;
  background: rgba(8, 8, 8, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-t);
}

.nav-btn.nav-logo {
  font-family: var(--display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
  cursor: pointer;
  flex-shrink: 0;
  padding: 0;
}

.nav-btn.nav-logo::after { display: none; }

#main-nav {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.nav-btn {
  background: none;
  border: none;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.13em;
  color: var(--dim);
  cursor: pointer;
  padding: 0.45rem 0.9rem;
  position: relative;
  transition: color 0.2s;
}

.nav-btn::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0.9rem;
  right: 0.9rem;
  height: 1.5px;
  background: var(--teal);
  box-shadow: 0 0 8px var(--teal);
  transform: scaleX(0);
  transition: transform 0.25s ease;
}

.nav-btn:hover { color: var(--text); }
.nav-btn.active { color: var(--text); }
.nav-btn.active::after { transform: scaleX(1); }

/* hamburger */
#hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
#hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition: transform 0.25s, opacity 0.2s;
}
#hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
#hamburger.open span:nth-child(2) { opacity: 0; }
#hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── tab sections ── */
.tab-section { display: none; }
.tab-section.active { display: block; }

/* ── home / canvas ── */
#home {
  position: relative;
  width: 100%;
  height: calc(100vh - var(--nav-h));
  overflow: hidden;
  background: var(--bg);
}

#splat-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

#home-tagline {
  position: absolute;
  bottom: 4%;
  right: 4%;
  text-align: right;
  line-height: 0.95;
  font-family: var(--display);
  font-size: clamp(3.6rem, 11vw, 9rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  pointer-events: none;
  z-index: 2;
}

/* ── page content wrapper ── */
.page-content {
  max-width: 1080px;
  margin: 0 auto;
  padding: 4rem 2.5rem 6rem;
}

.section-heading {
  font-family: var(--display);
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 3rem;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

/* ── MY VISION ── */
#vision { position: relative; }

#topo-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  pointer-events: none;
  z-index: 0;
}

#vision .page-content {
  position: relative;
  z-index: 1;
  max-width: none;
  margin: 0;
  padding: 0;
}

.vision-layout {
  display: grid;
  grid-template-columns: 42vw 1fr;
  gap: 0;
  align-items: stretch;
  height: calc(100vh - var(--nav-h));
  width: 100%;
}

.vision-photo {
  position: relative;
  height: 100%;
  padding: 4rem 4rem 4rem 8rem;
  box-sizing: border-box;
  overflow: hidden;
}

.vision-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  border: none;
  box-shadow: none;
  -webkit-mask-image: radial-gradient(ellipse 96% 98% at center, black 65%, transparent 100%);
          mask-image: radial-gradient(ellipse 96% 98% at center, black 65%, transparent 100%);
}

.vision-photo .photo-dissolve {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.vision-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 3rem 5rem;
  max-height: 100%;
  overflow-y: auto;
}

.vision-text h1 {
  font-family: var(--display);
  font-size: clamp(3rem, 7vw, 6.5rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1;
  margin-bottom: 2rem;
  white-space: nowrap;
  background: linear-gradient(90deg,
    var(--orange) 0%,
    var(--amber)  22%,
    var(--sky)    58%,
    var(--teal)   100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
          background-clip: text;
  color: transparent;
  display: inline-block;
  width: max-content;
  max-width: 100%;
}

.vision-text p {
  font-size: clamp(0.95rem, calc(1.8vw - 0.8rem), 2.2rem);
  line-height: 1.65;
  color: #c8c8c8;
  margin-bottom: 1.2rem;
}

.linkedin-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-top: 1rem;
  padding: 0.6rem 1.4rem;
  border: 1px solid var(--teal);
  color: var(--teal);
  background: transparent;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  border-radius: 3px;
  text-decoration: none;
  transition: background 0.2s, box-shadow 0.2s;
}
.linkedin-btn:hover {
  background: rgba(33, 158, 188, 0.08);
  box-shadow: 0 0 18px rgba(33, 158, 188, 0.18);
}

/* ── ART PRACTICE ── */
.art-era {
  margin-bottom: 4.5rem;
}

.era-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 1.75rem;
}

.era-label {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  color: var(--orange);
  white-space: nowrap;
  flex-shrink: 0;
}

.era-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border-o), transparent);
}

#art { position: relative; }

#art-topo-canvas {
  position: fixed;
  top: var(--nav-h);
  left: 0;
  width: 100vw;
  height: calc(100vh - var(--nav-h));
  display: block;
  pointer-events: none;
  z-index: 0;
}

#art .page-content {
  position: relative;
  z-index: 1;
  max-width: none;
  padding: 4rem 5rem 6rem;
}

.art-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 8px;
  gap: 1rem;
  grid-auto-flow: dense;
}

@media (min-width: 1800px) { .art-cards { grid-template-columns: repeat(5, 1fr); } }
@media (min-width: 2400px) { .art-cards { grid-template-columns: repeat(6, 1fr); } }
@media (max-width: 1200px) { .art-cards { grid-template-columns: repeat(3, 1fr); } }

.art-card.featured { grid-column: span 2; }

.art-card {
  background: rgba(2, 48, 71, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 6px;
  overflow: hidden;
  transition: border-color 0.22s, transform 0.22s, box-shadow 0.22s;
  cursor: default;
}

.art-card:hover {
  border-color: rgba(33, 158, 188, 0.3);
  transform: translateY(-5px);
  box-shadow: 0 10px 36px rgba(2, 48, 71, 0.4);
}

.art-card-img {
  overflow: hidden;
}

.art-card-img img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.4s ease;
}

.art-card:hover .art-card-img img {
  transform: scale(1.05);
}

.art-card-info {
  padding: 1rem 1.1rem 1.2rem;
}

.art-card-info h3 {
  font-family: var(--mono);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.35rem;
}

.art-medium {
  display: block;
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--teal);
  letter-spacing: 0.05em;
  margin-bottom: 0.6rem;
}

.art-card-info p {
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--dim);
}

/* ── MACHINE LEARNING ── */
#ml { position: relative; }

#ml-topo-canvas {
  position: fixed;
  top: var(--nav-h);
  left: 0;
  width: 100vw;
  height: calc(100vh - var(--nav-h));
  display: block;
  pointer-events: none;
  z-index: 0;
}

#ml .page-content {
  position: relative;
  z-index: 1;
}

.ml-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 2rem;
}

.ml-card {
  border: 1px solid var(--border-t);
  border-radius: 8px;
  padding: 2rem 2.2rem 2.2rem;
  background: #0d1217;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: border-color 0.22s, box-shadow 0.22s, transform 0.22s, background 0.22s;
}

.ml-card:hover {
  border-color: rgba(33, 158, 188, 0.42);
  background: #101620;
  box-shadow: 0 0 48px rgba(2, 48, 71, 0.55);
  transform: translateY(-4px);
}

.ml-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.7rem;
  border: 1px solid var(--border-o);
  color: var(--orange);
  border-radius: 2px;
}

.ml-card-title {
  font-family: var(--display);
  font-size: 1.3rem;
  font-weight: 700;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.ml-card p {
  font-size: 0.95rem;
  line-height: 1.78;
  color: #aaa;
  flex: 1;
}

.view-project-link {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--teal);
  text-decoration: none;
  align-self: flex-start;
  transition: opacity 0.2s;
}
.view-project-link:hover { opacity: 0.65; }

/* ── responsive ── */
@media (max-width: 820px) {
  #main-nav {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: rgba(8, 8, 8, 0.97);
    border-bottom: 1px solid var(--border-t);
    padding: 0.75rem 1.5rem 1.25rem;
    z-index: 199;
  }
  #main-nav.open { display: flex; }
  #main-nav .nav-btn { font-size: 0.8rem; padding: 0.65rem 0.5rem; }
  #main-nav .nav-btn::after { left: 0.5rem; right: 0.5rem; }

  #hamburger { display: flex; }
  .nav-logo { font-size: 0.95rem; }

  #site-header { padding: 0 1.5rem; }

  .vision-layout {
    grid-template-columns: 1fr;
    height: auto;
  }
  .vision-photo {
    height: auto;
    padding: 1.5rem 1.5rem 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  .vision-photo img {
    max-width: 100%;
    max-height: 55vh;
    width: auto;
    height: auto;
    object-fit: contain;
  }
  .vision-photo .photo-dissolve { display: none; }
  .vision-text { padding: 2rem 1.5rem; }

  .ml-cards { grid-template-columns: 1fr; }
  .page-content { padding: 3rem 1.5rem 5rem; }
  #art .page-content { padding: 1rem 0 2rem; }
  #art .art-cards { gap: 2px; }
  #art .art-card { border-radius: 0; }
}

@media (max-width: 480px) {
  #site-header { padding: 0 1rem; }
  .page-content { padding: 2.5rem 1rem 4rem; }
  #art .page-content { padding: 2rem 0 4rem; }
  .art-cards { grid-template-columns: repeat(2, 1fr); gap: 0.75rem; }
  .art-card.featured { grid-column: span 2; }
  .art-card-info { padding: 0.75rem; }
  #home-tagline { letter-spacing: 0.18em; }
  .ml-cards { grid-template-columns: 1fr; }
  .ml-card { padding: 1.5rem; }
}