/* ============================================================
   Zatsepina EAE Portfolio — styles
  Oxblood + gold · architecture bureau aesthetic
   ============================================================ */

/* ---------- Design tokens ---------- */
:root {
  /* Colour */
  --color-bg:       #F8F5F0;
  --color-surface:  #FFFFFF;
  --color-ink:      #2A1718;
  --color-muted:    #776668;
  --color-accent:   #B52236;
  --color-deep-green: #4A0F19;
  --color-deep-green-dark: #300A11;
  --color-hairline: #E5D9D5;
  --color-hairline-strong: #D7C5C0;

  /* Typography */
  --font-serif: "Fraunces", "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --font-sans:  "Inter", system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;

  /* Sizing */
  --container-max: 1200px;
  --container-pad: clamp(1.25rem, 4vw, 2.5rem);
  --gutter: clamp(1.5rem, 3vw, 3rem);

  /* Motion */
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* ---------- Reset / base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background-color: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--color-ink);
}

p {
  margin: 0;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
  transition: color 160ms var(--ease), text-decoration-color 160ms var(--ease);
}

a:hover {
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0.5rem;
  padding: 0.6rem 0.9rem;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 500;
  z-index: 1000;
  transition: top 160ms var(--ease);
}

.skip-link:focus {
  top: 0.5rem;
  text-decoration: none;
  color: #fff;
}

/* ---------- Layout container ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* ---------- Site header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  left: 0;
  right: 0;
  background-color: var(--color-deep-green);
  border-bottom: 1px solid var(--color-deep-green-dark);
  transition: border-color 200ms var(--ease), background-color 200ms var(--ease);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-hairline);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 64px;
  padding-block: 0.9rem;
}

.site-header__brand {
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  font-weight: 500;
  letter-spacing: -0.005em;
  color: #FFFFFF;
  border: 1.5px solid #FFFFFF;
  padding: 0.35rem 0.75rem;
  display: inline-block;
  transition: all 160ms var(--ease);
  margin-left: -137.5px;
}

.site-header__brand:hover {
  text-decoration: none;
  color: var(--color-deep-green);
  background-color: #FFFFFF;
}

.site-header__brand-secondary {
  font-size: 0.85rem;
  color: #D2A99B;
}

.site-nav ul {
  display: flex;
  gap: clamp(1rem, 3vw, 2.25rem);
  margin: 0 0 0 auto;
  padding: 0;
  list-style: none;
}

.site-nav a {
  color: #FFFFFF;
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.site-nav a:hover {
  color: #E2BD63;
  text-decoration: underline;
  text-decoration-color: #E2BD63;
}

/* ---------- Hero ---------- */
.hero {
  padding-block: clamp(5rem, 14vh, 10rem) clamp(3rem, 8vh, 6rem);
}

.hero__inner {
  max-width: 920px;
  margin-left: 12.5px;
}

.hero__eyebrow {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 1.75rem;
}

.hero__title {
  font-size: clamp(2.5rem, 7vw, 5.25rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
  font-weight: 400;
  margin-bottom: 1.75rem;
}

.hero__subtitle {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 2.4vw, 1.625rem);
  font-style: italic;
  font-weight: 400;
  color: var(--color-muted);
  max-width: 38ch;
  margin-bottom: -70px;
  line-height: 1.35;
}

.hero__lede {
  font-size: 1rem;
  color: var(--color-muted);
  max-width: 48ch;
  letter-spacing: 0.005em;
}

/* ---------- Section heads ---------- */
.section-head {
  display: block;
  padding-top: 2.5rem;
  padding-bottom: 2.5rem;
  padding-left: calc(50vw - 50%);
  padding-right: calc(50vw - 50%);
  margin-bottom: 2.5rem;
  margin-left: calc(-50vw + 50%);
  margin-right: calc(-50vw + 50%);
  text-align: center;
  background-color: #F1E8E2;
  border-top: 4px solid var(--color-deep-green);
  border-bottom: 4px solid var(--color-deep-green);
}

.section-head__index {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--color-accent);
  font-weight: 500;
  align-self: start;
  padding-top: 0.45rem;
}

.section-head__title {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 1.15;
  margin-left: auto;
  margin-right: auto;
}

.section-head__lede {
  color: var(--color-muted);
  font-size: 1rem;
  max-width: 56ch;
  margin-top: 1.625rem;
  margin-left: auto;
  margin-right: auto;
}

.section-head--inline {
  padding-bottom: 1.75rem;
  margin-bottom: 1.5rem;
}

/* ---------- Projects ---------- */
.work {
  padding-block: clamp(4rem, 10vh, 7rem);
  border-bottom: 1px solid var(--color-hairline);
}

.project {
  padding-block: clamp(2.5rem, 6vh, 4rem);
  border-top: 1px solid var(--color-hairline);
}

.project:first-of-type {
  border-top: none;
  padding-top: 0;
}

.project:last-of-type {
  padding-bottom: 0;
}

.project__header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.5rem 1.5rem;
  align-items: baseline;
  margin-bottom: clamp(1.5rem, 4vh, 2.5rem);
}

.project__number {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 500;
  color: var(--color-accent);
  line-height: 1;
  letter-spacing: -0.01em;
}

.project__title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 1.15;
}

.project__meta {
  display: flex;
  gap: clamp(1rem, 3vw, 2rem);
  margin: 0;
}

.project__meta > div {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 0;
}

.project__meta dt {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.project__meta dd {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-ink);
  letter-spacing: -0.005em;
}

/* Project body — two-column figure + writeup */
.project__body {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: var(--gutter);
  align-items: start;
}

.project--image-right .project__body {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
}

.project--image-right .project__figure {
  order: 2;
}

.project--image-right .project__writeup {
  order: 1;
}

.project__figure {
  margin: 0;
  background-color: var(--color-hairline);
  aspect-ratio: 3 / 2;
  overflow: hidden;
}

.project__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 600ms var(--ease), opacity 400ms var(--ease);
}

.project__figure:hover img {
  transform: scale(1.015);
}

.project__writeup {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-ink);
  max-width: 42ch;
  padding-top: 0.25rem;
}

.project__writeup p + p {
  margin-top: 1em;
}

/* ---------- Evidence & experience ---------- */
.evidence {
  padding-block: clamp(4rem, 10vh, 7rem);
  border-bottom: 1px solid var(--color-hairline);
}

.evidence__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.evidence-card {
  min-height: 16rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  background-color: var(--color-surface);
  border: 1px solid var(--color-hairline-strong);
  border-top: 4px solid var(--color-deep-green);
}

.evidence-card__label {
  margin-bottom: 1.25rem;
  color: var(--color-accent);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.evidence-card__title {
  margin-bottom: 1rem;
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  line-height: 1.2;
}

.evidence-card > p:not(.evidence-card__label):not(.evidence-card__prompt) {
  max-width: 42ch;
  color: var(--color-ink);
}

.evidence-card__prompt {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-hairline);
  color: var(--color-muted);
  font-size: 0.875rem;
}

/* ---------- About ---------- */
.about {
  padding-block: clamp(4rem, 10vh, 7rem);
  border-bottom: 1px solid var(--color-hairline);
}

.about__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: var(--gutter);
  align-items: start;
}

.about__body {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-ink);
  max-width: 60ch;
}

.about__body p + p {
  margin-top: 1em;
}

/* ---------- Contact ---------- */
.contact {
  padding-block: clamp(4rem, 10vh, 7rem);
  border-bottom: 1px solid var(--color-hairline);
}

.contact__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: var(--gutter);
  align-items: start;
}

.contact__body {
  font-size: 1.125rem;
  line-height: 1.7;
}

.contact__body a {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-hairline-strong);
  padding-bottom: 0.1em;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.contact__body a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
  text-decoration: none;
}

.contact__note {
  margin-top: 1rem;
  font-size: 0.875rem;
  color: var(--color-muted);
}

/* ---------- Footer ---------- */
.site-footer {
  padding-block: 2.5rem;
  background-color: var(--color-bg);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--color-muted);
}

.site-footer__meta {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-weight: 500;
}

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

/* Tablet — single-column project body */
@media (max-width: 1023px) {
  .project__body,
  .project--image-right .project__body {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .project--image-right .project__figure {
    order: 0;
  }

  .project--image-right .project__writeup {
    order: 0;
  }

  .about__inner,
  .contact__inner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

/* Mobile — compress hero & meta */
@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .site-header__inner {
    min-height: 56px;
    padding-block: 0.6rem;
  }

  .site-header__brand {
    margin-left: 0;
  }

  .site-nav ul {
    gap: 1rem;
  }

  .site-nav a {
    font-size: 0.875rem;
  }

  .hero {
    padding-block: 4rem 3rem;
  }

  .hero__title {
    margin-bottom: 1.25rem;
  }

  .hero__subtitle {
    margin-bottom: 1.5rem;
  }

  .evidence__grid {
    grid-template-columns: 1fr;
  }

  .project__header {
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    row-gap: 0.75rem;
  }

  .project__meta {
    grid-column: 1 / -1;
    flex-wrap: wrap;
    gap: 1rem 1.25rem;
  }

  .section-head {
    grid-template-columns: auto 1fr;
    gap: 0.75rem 1rem;
    padding-bottom: 1.75rem;
    margin-bottom: 1.75rem;
  }

  .section-head__lede {
    grid-column: 1 / -1;
  }
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .project__figure:hover img {
    transform: none;
  }
}