/* =========================================================
   Anna Shekiladze — Portfolio
   Minimal & elegant. Edit colours/spacing via :root tokens.
   ========================================================= */

:root {
  --bg:        #faf9f6;   /* warm off-white */
  --bg-alt:    #f1efe9;   /* subtle section contrast */
  --ink:       #1a1a18;   /* near-black text */
  --ink-soft:  #6b6862;   /* muted text */
  --line:      #d9d5cc;   /* hairlines */
  --accent:    #1a1a18;   /* keep restrained for elegance */

  --serif: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --sans:  "Inter", system-ui, -apple-system, sans-serif;

  --max:    1280px;
  --gutter: clamp(1.25rem, 5vw, 5rem);
  --ease:   cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 300;
  line-height: 1.65;
  font-size: clamp(1rem, 0.95rem + 0.2vw, 1.0625rem);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ---------- Reveal animation ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 1s var(--ease), transform 1s var(--ease);
  will-change: opacity, transform;
}
[data-reveal].is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.4rem var(--gutter);
  transition: background 0.4s var(--ease), padding 0.4s var(--ease), border-color 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(250, 249, 246, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding-top: 1rem;
  padding-bottom: 1rem;
  border-bottom-color: var(--line);
}
.nav__brand {
  font-family: var(--serif);
  font-size: 1.35rem;
  letter-spacing: 0.02em;
}
.nav__links { display: flex; gap: 2.25rem; }
.nav__links a {
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  position: relative;
  transition: color 0.3s var(--ease);
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -4px;
  width: 0; height: 1px;
  background: var(--ink);
  transition: width 0.35s var(--ease);
}
.nav__links a:hover { color: var(--ink); }
.nav__links a:hover::after { width: 100%; }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 6px;
}
.nav__toggle span {
  display: block;
  width: 26px; height: 1.5px;
  background: var(--ink);
  transition: transform 0.35s var(--ease), opacity 0.35s var(--ease);
}
.nav.is-open .nav__toggle span:nth-child(1) { transform: translateY(3.75px) rotate(45deg); }
.nav.is-open .nav__toggle span:nth-child(2) { transform: translateY(-3.75px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 8rem var(--gutter) 4rem;
  position: relative;
}
.hero__inner { max-width: var(--max); margin: 0 auto; width: 100%; }
.hero__eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 1.75rem;
}
.hero__title {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(3.5rem, 13vw, 11rem);
  line-height: 0.92;
  letter-spacing: -0.01em;
}
.hero__lede {
  max-width: 34ch;
  margin-top: 2rem;
  font-size: clamp(1.05rem, 1rem + 0.5vw, 1.35rem);
  color: var(--ink-soft);
}
.hero__cta {
  display: inline-block;
  margin-top: 2.5rem;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--ink);
  transition: opacity 0.3s var(--ease), letter-spacing 0.3s var(--ease);
}
.hero__cta:hover { letter-spacing: 0.24em; }
.hero__scroll {
  position: absolute;
  bottom: 2rem; left: 50%;
  transform: translateX(-50%);
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--ink-soft);
  animation: float 2.4s ease-in-out infinite;
}
@keyframes float { 0%,100% { transform: translate(-50%, 0); } 50% { transform: translate(-50%, 8px); } }

/* ---------- Sections ---------- */
.section { padding: clamp(5rem, 12vw, 11rem) var(--gutter); max-width: var(--max); margin: 0 auto; }
.section__head { margin-bottom: clamp(2.5rem, 6vw, 5rem); }
.section__title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.25rem, 6vw, 4rem);
  line-height: 1;
  letter-spacing: -0.01em;
}
.section__intro {
  margin-top: 1.25rem;
  max-width: 46ch;
  color: var(--ink-soft);
}

/* ---------- Work grid ---------- */
.work-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
}
.work-card {
  cursor: pointer;
  display: block;
  background: none;
  border: 0;
  text-align: left;
  padding: 0;
  font: inherit;
  color: inherit;
  width: 100%;
}
.work-card:nth-child(3n) { grid-column: 1 / -1; } /* occasional full-width feature */
.work-card__media {
  position: relative;
  overflow: hidden;
  background: var(--bg-alt);
  aspect-ratio: 4 / 3;
}
.work-card:nth-child(3n) .work-card__media { aspect-ratio: 16 / 7; }
.work-card__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 1.1s var(--ease), filter 0.6s var(--ease);
}
.work-card:hover .work-card__media img { transform: scale(1.045); }
.work-card__badge {
  position: absolute;
  top: 1rem; left: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(26,26,24,0.78);
  color: #fff;
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 0.4rem 0.7rem;
  backdrop-filter: blur(4px);
}
.work-card__meta { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; margin-top: 1.1rem; }
.work-card__title {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 2.5vw, 2.1rem);
  font-weight: 400;
  line-height: 1.1;
}
.work-card__year { color: var(--ink-soft); font-size: 0.85rem; white-space: nowrap; }
.work-card__role { color: var(--ink-soft); font-size: 0.85rem; letter-spacing: 0.04em; margin-top: 0.35rem; }

/* ---------- About ---------- */
.section--about { background: transparent; }
.about {
  display: grid;
  grid-template-columns: 5fr 6fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}
.about__portrait { background: var(--bg-alt); aspect-ratio: 4 / 5; overflow: hidden; }
.about__portrait img { width: 100%; height: 100%; object-fit: cover; }
.about__body p { max-width: 52ch; }
.about__body p + p { margin-top: 1.25rem; }
.about__body .section__title { margin-bottom: 1.75rem; }

/* ---------- CV ---------- */
.cv { display: grid; gap: clamp(2rem, 5vw, 3.5rem); }
.cv__group {
  display: grid;
  grid-template-columns: minmax(140px, 1fr) 3fr;
  gap: clamp(1rem, 4vw, 3rem);
  padding-bottom: clamp(2rem, 5vw, 3.5rem);
  border-bottom: 1px solid var(--line);
}
.cv__group:last-child { border-bottom: 0; padding-bottom: 0; }
.cv__heading {
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding-top: 0.35rem;
}
.cv__entry { display: flex; gap: 1.25rem; }
.cv__entry + .cv__entry { margin-top: 1.4rem; }
.cv__year { font-variant-numeric: tabular-nums; color: var(--ink-soft); min-width: 4.5rem; font-size: 0.95rem; padding-top: 0.15rem; }
.cv__detail strong { font-weight: 500; }
.cv__detail span { display: block; color: var(--ink-soft); font-size: 0.92rem; }

/* ---------- Contact ---------- */
.section--contact { background: var(--bg-alt); max-width: none; }
.contact { max-width: var(--max); margin: 0 auto; text-align: center; }
.contact__title {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(2.5rem, 8vw, 6rem);
  line-height: 1;
  letter-spacing: -0.01em;
}
.contact__email {
  display: inline-block;
  margin-top: 2.5rem;
  font-size: clamp(1.1rem, 2.5vw, 1.6rem);
  border-bottom: 1px solid var(--ink);
  padding-bottom: 6px;
  transition: letter-spacing 0.3s var(--ease);
}
.contact__email:hover { letter-spacing: 0.03em; }
.contact__socials {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2rem;
  margin-top: 3rem;
}
.contact__socials a {
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  transition: color 0.3s var(--ease);
}
.contact__socials a:hover { color: var(--ink); }

/* ---------- Footer ---------- */
.footer {
  padding: 2.5rem var(--gutter);
  text-align: center;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(18,17,16,0.96);
  display: flex; align-items: center; justify-content: center;
  padding: clamp(1rem, 5vw, 4rem);
  opacity: 0;
  transition: opacity 0.35s var(--ease);
}
.lightbox[hidden] { display: none; }
.lightbox.is-open { opacity: 1; }
.lightbox__stage {
  max-width: 1100px; width: 100%;
  overflow: hidden;          /* clip the sliding track */
}
.lightbox__track {
  display: flex;
  transition: transform 0.5s var(--ease);
  will-change: transform;
}
.lightbox__slide {
  flex: 0 0 100%;            /* one picture per "page" */
  height: 82vh;
  display: flex; align-items: center; justify-content: center;
}
.lightbox__slide img,
.lightbox__slide video {
  max-width: 100%; max-height: 82vh;
  width: auto; height: auto;
  object-fit: contain;
}
.lightbox__slide .embed-wrap {
  position: relative;
  width: min(100%, calc(82vh * 16 / 9));
  aspect-ratio: 16 / 9;
}
.lightbox__slide iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.lightbox__close, .lightbox__nav {
  position: absolute;
  background: none; border: 0; color: #fff;
  cursor: pointer; line-height: 1;
  transition: opacity 0.3s var(--ease);
  opacity: 0.7;
}
.lightbox__close:hover, .lightbox__nav:hover { opacity: 1; }
.lightbox__close { top: clamp(1rem,4vw,2rem); right: clamp(1rem,4vw,2rem); font-size: 2.5rem; }
.lightbox__nav { top: 50%; transform: translateY(-50%); font-size: 3rem; padding: 1rem; }
.lightbox__nav--prev { left: clamp(0.25rem, 2vw, 1.5rem); }
.lightbox__nav--next { right: clamp(0.25rem, 2vw, 1.5rem); }
.lightbox__caption {
  position: absolute; bottom: clamp(1rem, 4vw, 2rem); left: 0; right: 0;
  text-align: center; color: rgba(255,255,255,0.85);
  font-size: 0.85rem; letter-spacing: 0.06em; padding: 0 1.5rem;
}
.lightbox__caption strong { font-weight: 500; }
.lightbox__desc {
  display: block;
  margin: 0.5rem auto 0;
  max-width: 60ch;
  color: rgba(255,255,255,0.6);
  font-size: 0.78rem;
  line-height: 1.5;
  letter-spacing: 0.02em;
}

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .nav__links {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(75vw, 320px);
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
    padding: 2rem 2.5rem;
    background: var(--bg);
    border-left: 1px solid var(--line);
    transform: translateX(100%);
    transition: transform 0.45s var(--ease);
  }
  .nav.is-open .nav__links { transform: translateX(0); }
  .nav__links a { font-size: 1rem; }
  .nav__toggle { display: flex; z-index: 60; }

  .work-grid { grid-template-columns: 1fr; }
  .work-card:nth-child(3n) .work-card__media { aspect-ratio: 4 / 3; }

  .about { grid-template-columns: 1fr; }
  .about__portrait { max-width: 420px; }

  .cv__group { grid-template-columns: 1fr; gap: 1rem; }
  .cv__heading { padding-top: 0; }
}