/* ---------------------------------------------------
   Eva Maskalenko — Portfolio
   Deep Winter: black base, petrol accent, sharp edges
--------------------------------------------------- */

:root {
  --black:        #060707;
  --black-raised: #0c0e0e;
  --line:         #232727;
  --line-strong:  #34393a;
  --ink:          #e9ecec;
  --ink-dim:      #8b9494;
  --ink-faint:    #565f5f;
  --petrol:       #1c6b6b;
  --petrol-bright:#2fa3a3;

  --serif: "Fraunces", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --mono:  "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
}

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

html {
  background: var(--black);
  scroll-behavior: smooth;
}

body {
  background: var(--black);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--ink);
  text-decoration: none;
}

::selection {
  background: var(--petrol);
  color: var(--black);
}

/* ---------------------------------------------------
   Hero
--------------------------------------------------- */

.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 8vw 6vw 6vw;
  border-bottom: 1px solid var(--line);
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 6vw;
  width: 1px;
  height: 100%;
  background: var(--line);
}

.hero__index {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--petrol-bright);
  margin-bottom: 2.5rem;
  padding-left: 1.5rem;
}

.hero__name {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(3.2rem, 10vw, 8rem);
  line-height: 0.92;
  letter-spacing: -0.01em;
  color: var(--ink);
  padding-left: 1.5rem;
  text-transform: uppercase;
  font-variation-settings: "opsz" 144;
}

.hero__statement {
  font-family: var(--mono);
  font-size: clamp(0.95rem, 1.4vw, 1.15rem);
  color: var(--ink-dim);
  max-width: 34rem;
  margin: 2.5rem 0 0 1.5rem;
  line-height: 1.7;
}

.hero__meta {
  margin: 3rem 0 0 1.5rem;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.hero__meta .dot {
  color: var(--petrol);
}

/* ---------------------------------------------------
   Section label
--------------------------------------------------- */

.section-label {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 4rem 6vw 2rem;
  border-bottom: 1px solid var(--line);
}

.section-label__number {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--petrol-bright);
  letter-spacing: 0.14em;
}

.section-label__title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.4rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--ink);
}

/* ---------------------------------------------------
   Project grid
--------------------------------------------------- */

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.specimen {
  position: relative;
  padding: 2.75rem 2rem 2rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  min-height: 300px;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.grid .specimen:nth-child(3n) {
  border-right: none;
}

.specimen:hover {
  background: var(--black-raised);
  border-color: var(--line-strong);
}

.specimen:hover .specimen__title {
  color: var(--petrol-bright);
}

.specimen__tag {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 1.75rem;
}

.specimen__year {
  color: var(--petrol-bright);
}

.specimen__title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.5rem;
  line-height: 1.25;
  color: var(--ink);
  margin-bottom: 1rem;
  transition: color 0.15s ease;
}

.specimen__desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-faint);
  flex-grow: 1;
}

.specimen__index {
  margin-top: 1.5rem;
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--ink-faint);
  border-top: 1px solid var(--line);
  padding-top: 0.75rem;
}

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

.footer {
  padding: 4rem 6vw 3rem;
}

.footer__rule {
  height: 1px;
  background: var(--line);
  margin-bottom: 3rem;
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.footer__label {
  display: block;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--petrol);
  margin-bottom: 0.75rem;
}

.footer__link {
  font-size: 13px;
  color: var(--ink-dim);
  border-bottom: 1px solid transparent;
}

.footer__link:not(.footer__link--muted):hover {
  color: var(--petrol-bright);
  border-bottom-color: var(--petrol-bright);
}

.footer__link--muted {
  color: var(--ink-faint);
}

/* ---------------------------------------------------
   Responsive
--------------------------------------------------- */

@media (max-width: 900px) {
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid .specimen:nth-child(3n) {
    border-right: 1px solid var(--line);
  }
  .grid .specimen:nth-child(2n) {
    border-right: none;
  }
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .hero {
    padding: 20vw 6vw 10vw;
  }
  .hero::before {
    display: none;
  }
  .hero__index,
  .hero__name,
  .hero__statement,
  .hero__meta {
    padding-left: 0;
  }
  .grid {
    grid-template-columns: 1fr;
  }
  .grid .specimen {
    border-right: none !important;
  }
  .footer__grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

/* ---------------------------------------------------
   Project detail pages
--------------------------------------------------- */

.project-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 2rem 6vw;
  border-bottom: 1px solid var(--line);
}

.project-header__back {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
  border-bottom: 1px solid transparent;
}

.project-header__back:hover {
  color: var(--petrol-bright);
  border-bottom-color: var(--petrol-bright);
}

.project-header__index {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--petrol-bright);
}

.project__hero {
  padding: 6vw 6vw 4vw;
  border-bottom: 1px solid var(--line);
}

.project__tag {
  display: flex;
  gap: 1.5rem;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 1.5rem;
}

.project__year {
  color: var(--petrol-bright);
}

.project__title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2.2rem, 6vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
  max-width: 24ch;
  text-transform: uppercase;
}

.project__body {
  display: grid;
  grid-template-columns: minmax(0, 22rem) minmax(0, 46rem);
  gap: 4vw;
  padding: 4vw 6vw 6vw;
}

.project__section {
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--line);
  grid-column: 2;
  display: grid;
  grid-template-columns: subgrid;
}

.project__section:first-child {
  padding-top: 0;
}

.project__section-title {
  grid-column: 1 / span 1;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
  font-weight: 500;
  align-self: start;
}

.project__section-title span {
  color: var(--petrol-bright);
  margin-right: 0.6em;
}

.project__section-body {
  grid-column: 2 / span 1;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-dim);
}

.project__section-body p + p,
.project__section-body ul + p,
.project__section-body p + ul {
  margin-top: 1.25rem;
}

.project__list {
  list-style: none;
}

.project__list li {
  padding-left: 1.25rem;
  position: relative;
  margin-bottom: 1rem;
}

.project__list li:last-child {
  margin-bottom: 0;
}

.project__list li::before {
  content: "\2014";
  position: absolute;
  left: 0;
  color: var(--petrol);
}

.project__list strong {
  color: var(--ink);
  font-weight: 500;
}

.project__section--disclaimer .project__section-body,
.project__section--disclaimer .project__section-title {
  color: var(--ink-faint);
  font-style: italic;
}

.project__link {
  display: inline-block;
  color: var(--petrol-bright);
  border-bottom: 1px solid var(--petrol);
  word-break: break-all;
}

.project__link:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.project__nav {
  padding: 3rem 6vw 5rem;
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
}

.project__nav-link {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
  border-bottom: 1px solid transparent;
}

.project__nav-link:hover {
  color: var(--petrol-bright);
  border-bottom-color: var(--petrol-bright);
}

@media (max-width: 800px) {
  .project__body {
    grid-template-columns: minmax(0, 1fr);
  }
  .project__section {
    grid-column: 1;
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .project__section-title,
  .project__section-body {
    grid-column: 1;
  }
}

/* ---------------------------------------------------
   Back to top
--------------------------------------------------- */

.back-to-top {
  position: fixed;
  right: 6vw;
  bottom: 2rem;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 1rem;
  background: var(--black-raised);
  border: 1px solid var(--line-strong);
  color: var(--ink-dim);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.back-to-top:hover {
  color: var(--petrol-bright);
  border-color: var(--petrol-bright);
}

.back-to-top__arrow {
  color: var(--petrol-bright);
}

@media (max-width: 600px) {
  .back-to-top {
    right: 6vw;
    bottom: 1.25rem;
    padding: 0.6rem 0.85rem;
  }
}