/* ============================================================
   Kushulain — portfolio
   Palette: deep black / orange / palatinate purple
   Signature: pure-text buttons with layered glow, no borders
   ============================================================ */

:root {
  --bg: #0a0a0c;
  --bg-soft: #101014;
  --text: #edeaf0;
  --text-dim: #9a94a3;
  --orange: #ff8c1a;
  --violet: #682860;
  --violet-light: #9b4f8f;

  --glow-orange:
    0 0 6px rgba(255, 140, 26, 0.9),
    0 0 18px rgba(255, 140, 26, 0.45),
    0 0 42px rgba(104, 40, 96, 0.55);
  --glow-violet:
    0 0 6px rgba(155, 79, 143, 0.9),
    0 0 18px rgba(155, 79, 143, 0.45),
    0 0 42px rgba(255, 140, 26, 0.35);
  --glow-soft:
    0 0 10px rgba(255, 140, 26, 0.25),
    0 0 30px rgba(104, 40, 96, 0.3);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  overflow-x: hidden; /* the full-bleed hero uses 100vw, which includes the scrollbar */
  background: var(--bg);
  color: var(--text);
  font-family: "Montserrat", sans-serif;
  font-weight: 400;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--violet-light); text-decoration: none; }
a:hover { color: var(--orange); }

h1, h2, h3 { font-weight: 800; letter-spacing: 0.04em; }

img { max-width: 100%; display: block; }

/* ---------------- Navigation overlay ---------------- */

.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: center;
  gap: clamp(2rem, 6vw, 4.5rem);
  padding: 1.4rem 1rem 2.2rem;
  pointer-events: none;
}

/* Scrim fades in on scroll for readability, no visible box */
.site-nav::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(10, 10, 12, 0.92), rgba(10, 10, 12, 0));
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.site-nav.scrolled::before { opacity: 1; }

.site-nav a {
  position: relative;
  pointer-events: auto;
  color: var(--text);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.22em;
  transition: text-shadow 0.25s ease, letter-spacing 0.25s ease, color 0.25s ease;
}

.site-nav a:hover {
  color: var(--text);
  letter-spacing: 0.28em;
  text-shadow: var(--glow-orange);
}

.site-nav a[aria-current="page"] {
  text-shadow: var(--glow-orange);
}

/* ---------------- Text buttons (shared) ---------------- */

.text-btn {
  background: none;
  border: none;
  padding: 0.4rem 0.6rem;
  cursor: pointer;
  color: var(--text-dim);
  font-family: "Montserrat", sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  transition: text-shadow 0.25s ease, color 0.25s ease, letter-spacing 0.25s ease;
}

.text-btn:hover {
  color: var(--text);
  text-shadow: var(--glow-violet);
}

.text-btn.active {
  color: var(--text);
  text-shadow: var(--glow-orange);
}

/* ---------------- Layout ---------------- */

main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 7.5rem 1.5rem 4rem;
}

section { margin-bottom: 4.5rem; }

.section-title {
  font-size: 1.15rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--text);
  text-shadow: var(--glow-soft);
  margin-bottom: 1.8rem;
}

/* ---------------- HOME ---------------- */

.hero {
  /* Full-bleed: the hero canvas escapes the 1080px main column */
  width: 100vw;
  margin-left: calc(50% - 50vw);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.6rem;
  text-align: center;
}

#hero-canvas {
  width: min(80vw, 88vh);
  height: min(80vw, 88vh);
  display: block;
  cursor: pointer;
  /* Touch-drag on the canvas drives the shader instead of scrolling the page */
  touch-action: none;
}

#hero-canvas.interactive { cursor: crosshair; }

.hero-hint {
  color: var(--text-dim);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin: 0;
}

.texture-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.8rem;
}

.tagline {
  font-size: clamp(1.3rem, 3.4vw, 2.1rem);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-shadow: var(--glow-orange);
  margin: 0.5rem 0 0;
}

.video-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--bg-soft);
}

.video-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* ---------------- RTT divider (shader placeholder) ---------------- */

.rtt-divider {
  display: block;
  width: 50%;
  height: 45px;
  margin: 3.5rem auto;
}

/* ---------------- WORKS ---------------- */

.page-title {
  text-align: center;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  text-shadow: var(--glow-orange);
  margin: 0 0 2rem;
}

.tag-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem 0.9rem;
  margin-bottom: 3rem;
}

.work-entry h2 {
  font-size: 1.4rem;
  letter-spacing: 0.08em;
  text-shadow: var(--glow-soft);
  margin: 0 0 0.4rem;
}

.work-entry .work-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1rem;
  margin-bottom: 1rem;
}

.work-entry .work-tags span {
  color: var(--violet-light);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.work-entry .work-desc {
  color: var(--text-dim);
  max-width: 68ch;
  margin: 0 0 1.5rem;
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.media-thumb {
  position: relative;
  padding: 0;
  border: none;
  background: var(--bg-soft);
  cursor: pointer;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.media-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease, opacity 0.35s ease;
  opacity: 0.85;
}

.media-thumb:hover img {
  transform: scale(1.04);
  opacity: 1;
}

.media-thumb .play-icon {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--text);
  font-size: 2rem;
  text-shadow: var(--glow-orange);
  pointer-events: none;
}

.work-related {
  margin-top: 1.2rem;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.works-empty {
  text-align: center;
  color: var(--text-dim);
  padding: 3rem 0;
}

/* ---------------- Lightbox ---------------- */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(5, 5, 7, 0.94);
  padding: 2rem;
}

.lightbox.open { display: flex; }

.lightbox img {
  max-width: 92vw;
  max-height: 86vh;
  object-fit: contain;
}

.lightbox .lightbox-video {
  width: min(1100px, 92vw);
  aspect-ratio: 16 / 9;
}

.lightbox .lightbox-video iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.lightbox-close {
  position: absolute;
  top: 1.2rem;
  right: 1.8rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text);
  font-family: "Montserrat", sans-serif;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.2em;
  text-shadow: var(--glow-orange);
}

/* ---------------- ABOUT ---------------- */

.about-intro {
  max-width: 68ch;
  font-size: 1.05rem;
}

.skill-groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 2rem;
}

.skill-groups h3 {
  font-size: 0.85rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--orange);
  text-shadow: var(--glow-soft);
  margin: 0 0 0.6rem;
}

.skill-groups ul {
  list-style: none;
  margin: 0;
  padding: 0;
  color: var(--text-dim);
}

.skill-groups li { padding: 0.15rem 0; }

.values-list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 72ch;
}

.values-list li {
  padding: 0.55rem 0;
  color: var(--text-dim);
}

.values-list strong {
  color: var(--text);
  display: block;
  letter-spacing: 0.06em;
}

.contact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 1rem 3rem;
}

.contact-row .big-link {
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text);
  text-shadow: var(--glow-orange);
  transition: text-shadow 0.25s ease, letter-spacing 0.25s ease;
}

.contact-row .big-link:hover {
  letter-spacing: 0.16em;
  text-shadow: var(--glow-violet);
}

.contact-note { color: var(--text-dim); font-size: 0.9rem; }

/* ---------------- Footer ---------------- */

footer {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  padding: 2.5rem 1rem 3rem;
}

footer a { margin: 0 0.6rem; }

@media (max-width: 600px) {
  main { padding-top: 6rem; }
  .site-nav { gap: 1.6rem; }
  .site-nav a { font-size: 0.85rem; }
}