/* ============================================================
   Norbu Gyeltshen (Whadipa) — portfolio
   Black & white, editorial. EB Garamond + Inter + JetBrains Mono
   ============================================================ */
:root {
  --color-bg: #ffffff;
  --color-bg-light: #f7f7f7;
  --color-bg-dark: #0a0a0a;
  --color-text: #0a0a0a;
  --color-text-secondary: #555555;
  --color-text-inverse: #ffffff;
  --color-accent: #0a0a0a;
  --color-accent-soft: #e8e8e8;
  --color-border: #e0e0e0;
  --color-shadow: rgba(0, 0, 0, 0.06);

  --font-display: 'EB Garamond', Georgia, serif;
  --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --space-xs: 0.4rem;
  --space-sm: 0.8rem;
  --space-md: 1.6rem;
  --space-lg: 2.8rem;
  --space-xl: 4.8rem;
  --space-xxl: 7.2rem;
  --container-max: 1200px;
  --container-padding: 1.6rem;
  --radius-sm: 4px;
  --radius-md: 12px;
  --radius-lg: 24px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --duration: 0.6s;
  --nav-h: 64px;
}

/* ---------- Reset & base ---------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html {
  scroll-behavior: smooth; scroll-padding-top: var(--nav-h);
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-body); background-color: var(--color-bg); color: var(--color-text);
  line-height: 1.7; font-size: 1.0625rem; overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-text); text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul, ol { list-style: none; }
svg { width: 1em; height: 1em; flex-shrink: 0; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; border-radius: 2px; }
::selection { background: var(--color-accent-soft); color: var(--color-text); }

.skip { position: absolute; left: -999px; top: 8px; background: var(--color-text); color: #fff; padding: 8px 12px; border-radius: 8px; z-index: 2000; }
.skip:focus { left: 8px; }

/* ---------- Utility ---------- */
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--container-padding); }
.section-label {
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--color-text-secondary); margin-bottom: var(--space-sm); display: block; font-weight: 600;
}
.section-title {
  font-family: var(--font-display); font-size: clamp(2rem, 5vw, 3.6rem); font-weight: 700;
  line-height: 1.15; letter-spacing: -0.02em; margin-bottom: var(--space-md);
}
.section-head { display: grid; gap: var(--space-sm); margin-bottom: var(--space-md); }
.section-sub { color: var(--color-text-secondary); font-size: 0.98rem; max-width: 460px; }

/* ---------- Buttons ---------- */
.btn-primary, .btn-secondary {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  min-height: 46px; padding: 0.65rem 2rem; border-radius: 40px;
  font-weight: 600; font-size: 0.9rem; letter-spacing: 0.02em;
  transition: background 0.25s, border-color 0.25s, transform 0.25s;
}
.btn-primary { background: var(--color-text); color: var(--color-text-inverse); }
.btn-primary:hover { background: var(--color-text-secondary); transform: scale(0.97); }
.btn-secondary { background: transparent; color: var(--color-text); border: 2px solid var(--color-border); }
.btn-secondary:hover { border-color: var(--color-text); background: var(--color-bg-light); transform: scale(0.97); }

/* ---------- Navigation ---------- */
.site-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: var(--space-sm) var(--container-padding); padding-top: calc(var(--space-sm) + env(safe-area-inset-top));
  background: var(--color-bg); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
}
.site-nav.scrolled { background: rgba(255, 255, 255, 0.92); box-shadow: 0 2px 24px var(--color-shadow); }
.nav-inner { max-width: var(--container-max); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { font-family: var(--font-display); font-size: 1.3rem; font-weight: 700; letter-spacing: -0.02em; }
.nav-logo span { font-weight: 300; }
.nav-links { display: flex; align-items: center; gap: var(--space-md); }
.nav-links a { font-size: 0.85rem; font-weight: 500; color: var(--color-text-secondary); transition: color 0.2s; position: relative; letter-spacing: 0.02em; }
.nav-links a:hover { color: var(--color-text); }
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px;
  background: var(--color-accent); transition: width 0.3s var(--ease);
}
.nav-links a:hover::after { width: 100%; }
.nav-cta {
  background: var(--color-text); color: var(--color-text-inverse) !important;
  padding: 0.4rem 1.4rem; border-radius: 40px; font-size: 0.8rem !important; font-weight: 600;
  transition: background 0.2s, transform 0.2s;
}
.nav-cta:hover { background: var(--color-text-secondary) !important; transform: scale(0.97); }
.nav-cta::after { display: none !important; }
.nav-toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 44px; padding: 10px; margin-right: -10px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--color-text); transition: all 0.3s var(--ease); border-radius: 2px; }
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 820px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; align-items: stretch;
    background: var(--color-bg); padding: var(--space-md) var(--container-padding) var(--space-lg); gap: var(--space-xs);
    border-bottom: 1px solid var(--color-border); box-shadow: 0 24px 40px var(--color-shadow);
    transform: translateY(-10px); opacity: 0; pointer-events: none; transition: all 0.4s var(--ease);
  }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: all; }
  .nav-links a { font-family: var(--font-display); font-size: 1.6rem; font-weight: 600; color: var(--color-text); padding: var(--space-xs) 0; }
  .nav-links a::after { display: none; }
  .nav-cta { align-self: flex-start; font-family: var(--font-body) !important; font-size: 0.9rem !important; padding: 0.7rem 1.8rem !important; margin-top: var(--space-sm); }
}

/* ---------- Hero ---------- */
.hero {
  padding: calc(var(--nav-h) + var(--space-lg)) 0 var(--space-xl);
  min-height: 100vh; min-height: 100svh; display: flex; align-items: center; position: relative;
}
.hero::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(circle, #d0d0d0 1px, transparent 1px); background-size: 24px 24px; opacity: 0.3;
}
.hero .container { position: relative; width: 100%; }
.hero-grid { display: grid; gap: var(--space-lg); align-items: center; }
.hero-content { display: flex; flex-direction: column; gap: var(--space-sm); }
.hero-content .section-label { margin-bottom: 0; }
.hero-name { font-family: var(--font-display); font-size: clamp(2.8rem, 11vw, 5.8rem); font-weight: 700; line-height: 1.02; letter-spacing: -0.03em; }
.hero-title { font-family: var(--font-display); font-style: italic; font-size: 1.25rem; color: var(--color-text-secondary); letter-spacing: 0.01em; }
.hero-title strong { color: var(--color-text); font-weight: 600; }
.hero-intro { font-size: 1rem; color: var(--color-text-secondary); max-width: 440px; }
.hero-actions { display: flex; flex-direction: column; gap: var(--space-sm); margin-top: var(--space-sm); }
.hero-status {
  display: inline-flex; align-items: center; gap: 0.5rem; margin-top: var(--space-xs);
  font-family: var(--font-mono); font-size: 0.75rem; color: var(--color-text-secondary); letter-spacing: 0.02em;
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--color-text); animation: pulse-dot 2s infinite; }
@keyframes pulse-dot { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.35; transform: scale(0.8); } }

.hero-image-wrapper {
  position: relative; border-radius: var(--radius-lg); overflow: hidden; background: var(--color-bg-light);
  aspect-ratio: 4 / 5; box-shadow: 0 24px 64px var(--color-shadow); border: 1px solid var(--color-border);
  order: -1; width: 100%; max-width: 300px; margin: 0 auto; aspect-ratio: 1 / 1;
}
.hero-image-wrapper img { width: 100%; height: 100%; object-fit: cover; object-position: 60% 60%; transition: transform 0.8s var(--ease); }
.hero-image-wrapper:hover img { transform: scale(1.03); }

/* shown when an image file hasn't been added yet */
.img-slot__hint { display: none; }
.img-slot.is-empty { background: linear-gradient(160deg, #efefef, #d9d9d9); }
.img-slot.is-empty img { display: none; }
.img-slot.is-empty .img-slot__hint {
  display: grid; place-items: center; position: absolute; inset: 0;
  font-family: var(--font-mono); font-size: 0.75rem; color: #8a8a8a;
}

/* ---------- Statement ---------- */
.statement { padding: var(--space-lg) 0; border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); background: var(--color-bg-light); }
.statement blockquote {
  font-family: var(--font-display); font-size: clamp(1.4rem, 4.6vw, 2.6rem); font-weight: 400; font-style: italic;
  line-height: 1.3; letter-spacing: -0.02em; max-width: 820px; margin: 0 auto; text-align: center;
}
.statement cite {
  display: block; margin-top: var(--space-md); font-family: var(--font-mono); font-style: normal;
  font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-text-secondary);
}

/* ---------- Portfolio ---------- */
.work, .about, .expertise, .journey { padding: var(--space-xl) 0; }
.about, .journey { background: var(--color-bg-light); border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }

.filters {
  display: flex; gap: 8px; overflow-x: auto; scrollbar-width: none;
  margin: 0 calc(var(--container-padding) * -1) var(--space-md); padding: 2px var(--container-padding);
}
.filters::-webkit-scrollbar { display: none; }
.filter {
  flex-shrink: 0; min-height: 40px; padding: 0 1.2rem; border-radius: 40px; border: 1.5px solid var(--color-border);
  font-size: 0.85rem; font-weight: 500; color: var(--color-text-secondary); transition: all 0.25s var(--ease);
}
.filter:hover { border-color: var(--color-text); color: var(--color-text); }
.filter.is-active { background: var(--color-text); border-color: var(--color-text); color: var(--color-text-inverse); }

.masonry { columns: 2; column-gap: 10px; }
.photo {
  position: relative; break-inside: avoid; margin: 0 0 10px; border-radius: var(--radius-md); overflow: hidden;
  cursor: zoom-in; background: var(--color-bg-light); border: 1px solid var(--color-border);
  animation: fadeUp 0.6s var(--ease) both;
}
.photo[hidden] { display: none; }
.photo img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s var(--ease); }
.photo:hover img { transform: scale(1.04); }
.photo figcaption {
  position: absolute; inset: auto 0 0; padding: 28px 12px 10px; color: #fff; line-height: 1.25;
  font-family: var(--font-display); font-size: 1rem; font-weight: 500;
  background: linear-gradient(transparent, rgba(0,0,0,.7));
  opacity: 0; transform: translateY(6px); transition: all 0.4s var(--ease);
}
.photo figcaption small {
  display: block; margin-top: 2px; font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 0.12em; text-transform: uppercase; opacity: 0.8;
}
.photo:hover figcaption, .photo:focus-visible figcaption { opacity: 1; transform: none; }
@media (hover: none) { .photo figcaption { opacity: 1; transform: none; } }

.photo.is-empty { cursor: default; background: linear-gradient(160deg, #f1f1f1, #dcdcdc); }
.photo.is-empty img { visibility: hidden; }
.photo.is-empty figcaption { color: var(--color-text); background: none; opacity: 1; transform: none; }
.photo.is-empty::before {
  content: attr(data-src); position: absolute; top: 10px; left: 12px; right: 12px;
  font-family: var(--font-mono); font-size: 0.62rem; color: #8a8a8a; word-break: break-all;
}
@keyframes fadeUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }

.work-more { margin-top: var(--space-md); text-align: center; }

/* ---------- About ---------- */
.about-grid { display: grid; gap: var(--space-lg); align-items: center; }
.about-text { display: grid; gap: var(--space-sm); color: var(--color-text-secondary); }
.about-text strong { color: var(--color-text); }
.about-details { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md) var(--space-sm); margin-top: var(--space-lg); padding-top: var(--space-md); border-top: 1px solid var(--color-border); }
.about-details dt { font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--color-text-secondary); font-weight: 600; }
.about-details dd { font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; line-height: 1.3; margin-top: 2px; }
.about-image {
  position: relative; border-radius: var(--radius-lg); overflow: hidden; background: var(--color-bg);
  aspect-ratio: 4 / 5; box-shadow: 0 16px 64px var(--color-shadow); border: 1px solid var(--color-border);
  width: 100%; max-width: 420px; margin: 0 auto;
}
.about-image img { width: 100%; height: 100%; object-fit: cover; object-position: 15% center; }

/* ---------- Expertise ---------- */
.expertise-grid { display: grid; gap: var(--space-sm); margin-top: var(--space-md); }
.exp-card {
  padding: var(--space-md); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-bg);
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease), border-color 0.4s;
}
.exp-card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px var(--color-shadow); border-color: var(--color-text); }
.exp-num { font-family: var(--font-mono); font-size: 0.75rem; color: var(--color-text-secondary); letter-spacing: 0.1em; }
.exp-card h3 { font-family: var(--font-display); font-size: 1.6rem; font-weight: 700; letter-spacing: -0.01em; line-height: 1.2; margin: var(--space-sm) 0 var(--space-xs); }
.exp-card p { color: var(--color-text-secondary); font-size: 0.95rem; }

/* ---------- Journey / timeline ---------- */
.timeline { margin-top: var(--space-md); border-top: 1px solid var(--color-border); }
.timeline-item {
  display: grid; grid-template-columns: 1fr; gap: var(--space-xs); padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border); align-items: start;
}
.timeline-tag { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--color-text-secondary); font-weight: 600; padding-top: 0.35rem; }
.timeline-item h3 { font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; letter-spacing: -0.01em; line-height: 1.2; }
.timeline-item p { color: var(--color-text-secondary); font-size: 0.95rem; margin-top: 2px; }

/* ---------- Contact ---------- */
.contact { padding: var(--space-xl) 0; }
.contact-grid { display: grid; gap: var(--space-lg); align-items: start; }
.contact-info h2 { font-family: var(--font-display); font-size: clamp(2.2rem, 7vw, 3.6rem); font-weight: 700; line-height: 1.1; letter-spacing: -0.02em; margin-bottom: var(--space-sm); }
.contact-info p { color: var(--color-text-secondary); max-width: 440px; }
.contact-links { display: grid; border: 1px solid var(--color-border); border-radius: var(--radius-md); overflow: hidden; box-shadow: 0 4px 24px var(--color-shadow); }
.contact-link {
  display: flex; align-items: center; gap: var(--space-sm); padding: 1.1rem 1.25rem; min-height: 72px;
  border-bottom: 1px solid var(--color-border); background: var(--color-bg); transition: background 0.25s;
}
.contact-link:last-child { border-bottom: 0; }
.contact-link:hover { background: var(--color-bg-light); }
.contact-link > svg { width: 40px; height: 40px; padding: 9px; border-radius: 50%; background: var(--color-text); color: var(--color-text-inverse); }
.contact-link span { display: flex; flex-direction: column; line-height: 1.35; min-width: 0; flex: 1; }
.contact-link strong { font-weight: 600; font-size: 0.98rem; }
.contact-link small { font-family: var(--font-mono); font-size: 0.75rem; color: var(--color-text-secondary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.contact-link i { font-style: normal; color: var(--color-text-secondary); transition: transform 0.3s var(--ease); }
.contact-link:hover i { transform: translateX(4px); color: var(--color-text); }

/* ---------- Footer ---------- */
.site-footer { padding: var(--space-xl) 0 calc(var(--space-lg) + env(safe-area-inset-bottom)); border-top: 1px solid var(--color-border); }
.footer-inner { display: grid; gap: var(--space-md); justify-items: center; text-align: center; }
.footer-brand .name { font-family: var(--font-display); font-size: 1.8rem; font-weight: 700; letter-spacing: -0.02em; }
.footer-brand .name span { font-weight: 300; }
.footer-brand .tagline { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-text-secondary); }
.footer-social { display: flex; gap: var(--space-xs); }
.footer-social a {
  width: 44px; height: 44px; border-radius: 50%; border: 1.5px solid var(--color-border);
  display: grid; place-items: center; transition: all 0.25s var(--ease);
}
.footer-social a:hover { background: var(--color-text); border-color: var(--color-text); color: var(--color-text-inverse); }
.footer-social svg { width: 18px; height: 18px; }
.footer-copy { font-size: 0.8rem; color: var(--color-text-secondary); }
.footer-copy a { color: var(--color-text); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }

/* ---------- Lightbox ---------- */
.lightbox { position: fixed; inset: 0; z-index: 3000; background: rgba(10,10,10,.97); display: flex; align-items: center; justify-content: center; touch-action: pan-y; }
.lightbox[hidden] { display: none; }
.lightbox__figure { margin: 0; max-width: 100%; padding: 56px 0 24px; display: flex; flex-direction: column; align-items: center; }
.lightbox__figure img { max-width: 100vw; max-height: calc(100svh - 130px); object-fit: contain; user-select: none; -webkit-user-drag: none; }
.lightbox__figure figcaption { color: #eee; font-family: var(--font-display); font-style: italic; font-size: 1.1rem; padding: 12px var(--container-padding) 0; text-align: center; }
.lightbox__close {
  position: absolute; top: calc(8px + env(safe-area-inset-top)); right: 8px; width: 48px; height: 48px;
  background: rgba(255,255,255,.1); color: #fff; font-size: 2rem; line-height: 1; border-radius: 50%;
}
.lightbox__nav { position: absolute; top: 50%; transform: translateY(-50%); width: 44px; height: 44px; border-radius: 50%; background: rgba(255,255,255,.12); color: #fff; display: grid; place-items: center; }
.lightbox__nav svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 2; }
.lightbox__prev { left: 8px; }
.lightbox__next { right: 8px; }

/* ---------- Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

/* ============================================================
   Larger screens
   ============================================================ */
@media (min-width: 560px) {
  .hero-actions { flex-direction: row; }
  .expertise-grid { grid-template-columns: 1fr 1fr; }
  .timeline-item { grid-template-columns: 110px 1fr; gap: var(--space-md); }
}

@media (min-width: 821px) {
  :root { --container-padding: 2rem; --nav-h: 70px; }
  .work, .about, .expertise, .journey, .contact { padding: var(--space-xxl) 0; }
  .hero-grid { grid-template-columns: 1.1fr 0.9fr; gap: var(--space-xl); }
  .hero-image-wrapper { order: 0; max-width: none; aspect-ratio: 4 / 5; }
  .hero-intro { font-size: 1.05rem; }
  .section-head { grid-template-columns: 1fr auto; align-items: end; gap: var(--space-lg); }
  .section-head .section-title { margin-bottom: 0; }
  .filters { margin: 0 0 var(--space-lg); padding: 2px; }
  .masonry { columns: 3; column-gap: 16px; }
  .photo { margin-bottom: 16px; }
  .about-grid { grid-template-columns: 1.1fr 0.9fr; gap: var(--space-xl); }
  .about-details { grid-template-columns: repeat(4, 1fr); }
  .contact-grid { grid-template-columns: 1fr 1fr; gap: var(--space-xl); }
  .footer-inner { grid-template-columns: 1fr auto; justify-items: start; text-align: left; align-items: center; }
  .footer-copy { grid-column: 1 / -1; padding-top: var(--space-md); border-top: 1px solid var(--color-border); width: 100%; }
  .lightbox__prev { left: 20px; }
  .lightbox__next { right: 20px; }
  .lightbox__nav { width: 54px; height: 54px; }
}

@media (min-width: 1100px) {
  .masonry { columns: 4; }
  .expertise-grid { grid-template-columns: repeat(4, 1fr); }
  .timeline { display: grid; grid-template-columns: 1fr 1fr; column-gap: var(--space-xl); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}