/* =========================================================
   Nikolett Puskás portfolio — design tokens & base
   ========================================================= */

:root {
  --bg:        #FAF7F0;
  --bg-alt:    #F2EDE0;
  --bg-deep:   #28302A;
  --ink:       #1A1F1A;
  --ink-2:     #3E443D;
  --ink-mute:  #6B7166;
  --rule:      #E2DBC9;
  --rule-2:    #C9C0AB;
  --accent:    #B85C38;
  --accent-dk: #8E4426;
  --accent-tn: #F4E6DC;

  --serif: "Fraunces", "Iowan Old Style", "Apple Garamond", Georgia, "Times New Roman", serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --maxw: 1180px;
  --pad:  clamp(1.25rem, 4vw, 2.5rem);
  --radius: 4px;

  --t-fast: 150ms ease;
  --t-med:  280ms cubic-bezier(.2,.7,.2,1);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--accent-dk);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--t-fast);
}
a:hover { color: var(--accent); }

::selection { background: var(--accent-tn); color: var(--ink); }

/* Skip link for keyboard users */
.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--bg);
  padding: 0.5rem 1rem;
  z-index: 999;
  text-decoration: none;
}
.skip:focus { left: 1rem; top: 1rem; }

/* =========================================================
   Layout
   ========================================================= */

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}

.container-narrow {
  max-width: 760px;
  margin: 0 auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}

section { padding: clamp(3rem, 7vw, 5.5rem) 0; }
section + section { border-top: 1px solid var(--rule); }
.section-tight { padding: clamp(2rem, 5vw, 3.5rem) 0; }
.alt-bg { background: var(--bg-alt); }
.dark-bg { background: var(--bg-deep); color: #EDEAE0; }
.dark-bg a { color: #F1C4A8; }
.dark-bg a:hover { color: #fff; }
.dark-bg .eyebrow { color: #E0B898; }

/* =========================================================
   Header / nav
   ========================================================= */

.site-header {
  position: sticky;
  top: 0;
  background: rgba(250, 247, 240, 0.92);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--rule);
  z-index: 50;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 64px;
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

.brand {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.25rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.brand .dot { color: var(--accent); }

.nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.4vw, 2rem);
}
.nav a {
  font-size: 0.95rem;
  color: var(--ink-2);
  text-decoration: none;
  padding: 0.25rem 0;
  border-bottom: 1.5px solid transparent;
  transition: color var(--t-fast), border-color var(--t-fast);
}
.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--rule-2);
  border-radius: var(--radius);
  padding: 0.5rem 0.7rem;
  font: inherit;
  color: var(--ink);
  cursor: pointer;
}
.nav-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; align-items: center; gap: 0.4rem; }
  .nav {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg);
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    padding: 0.5rem var(--pad) 1.25rem;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--t-fast), transform var(--t-fast);
  }
  .nav a {
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--rule);
    font-size: 1.05rem;
  }
  .nav a:last-child { border-bottom: 0; }
  .nav.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .site-header { position: relative; }
}

/* =========================================================
   Typography
   ========================================================= */

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.015em;
  line-height: 1.15;
  margin: 0 0 0.6em;
  font-variation-settings: "opsz" 36;
}

h1 {
  font-size: clamp(2.4rem, 5.6vw, 4rem);
  font-variation-settings: "opsz" 96;
  letter-spacing: -0.025em;
  line-height: 1.05;
}
h2 {
  font-size: clamp(1.7rem, 3.2vw, 2.4rem);
  font-variation-settings: "opsz" 60;
}
h3 {
  font-size: clamp(1.3rem, 2vw, 1.5rem);
  font-variation-settings: "opsz" 36;
}
h4 {
  font-size: 1.1rem;
  font-family: var(--sans);
  font-weight: 600;
  letter-spacing: 0;
}

p { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

.lede {
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  line-height: 1.4;
  font-weight: 400;
  color: var(--ink-2);
  font-variation-settings: "opsz" 36;
}

.eyebrow {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: var(--accent-dk);
  margin: 0 0 0.9em;
}

ul, ol { padding-left: 1.25rem; margin: 0 0 1.1em; }
ul li, ol li { margin-bottom: 0.4em; }

blockquote {
  margin: 1.5em 0;
  padding-left: 1.25rem;
  border-left: 3px solid var(--accent);
  font-family: var(--serif);
  font-style: italic;
  color: var(--ink-2);
  font-size: 1.15rem;
}

hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 2.5rem 0;
}

/* =========================================================
   Buttons & CTAs
   ========================================================= */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  padding: 0.85em 1.4em;
  font-family: var(--sans);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--bg);
  transition: background var(--t-fast), color var(--t-fast), transform var(--t-fast);
  cursor: pointer;
}
.btn:hover {
  background: var(--accent-dk);
  border-color: var(--accent-dk);
  color: var(--bg);
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--ink);
}
.btn-ghost:hover {
  background: var(--ink);
  color: var(--bg);
}
.btn-sm { padding: 0.55em 0.95em; font-size: 0.85rem; }

.btn .arrow {
  display: inline-block;
  transition: transform var(--t-fast);
}
.btn:hover .arrow { transform: translateX(3px); }

/* Inline arrow link */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  font-weight: 500;
  text-decoration: none;
  color: var(--ink);
  border-bottom: 1.5px solid var(--accent);
  padding-bottom: 1px;
}
.link-arrow:hover { color: var(--accent-dk); }
.link-arrow .arrow { transition: transform var(--t-fast); }
.link-arrow:hover .arrow { transform: translateX(3px); }

/* =========================================================
   Hero
   ========================================================= */

.hero {
  padding: clamp(3.5rem, 9vw, 7rem) 0 clamp(2rem, 5vw, 4rem);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.hero h1 {
  margin-top: 0;
  margin-bottom: 0.4em;
}
.hero .lede { max-width: 38ch; margin-bottom: 2rem; }

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-figure {
  position: relative;
  aspect-ratio: 4 / 5;
  background: var(--bg-alt);
  overflow: hidden;
  border-radius: var(--radius);
}
.hero-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-figure::after {
  content: "";
  position: absolute;
  inset: auto -12px -12px auto;
  width: 60%;
  height: 60%;
  background: var(--accent-tn);
  z-index: -1;
  border-radius: var(--radius);
}
.hero-figure { isolation: isolate; }

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-figure { max-width: 80%; margin: 0 auto; }
}

/* =========================================================
   Credibility strip
   ========================================================= */

.cred {
  padding: 1.5rem 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: transparent;
}
.cred-label {
  display: block;
  text-align: center;
  font-size: 0.78rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 0.9rem;
  font-weight: 500;
}
.cred-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem 2rem;
}
.cred-list li {
  font-family: var(--serif);
  font-size: 1rem;
  color: var(--ink-2);
  font-style: italic;
  font-variation-settings: "opsz" 24;
  margin: 0;
}

/* =========================================================
   Three-up cards (What I do)
   ========================================================= */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}
.card {
  padding: 1.75rem;
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  transition: border-color var(--t-fast), transform var(--t-med), box-shadow var(--t-med);
}
.card:hover {
  border-color: var(--rule-2);
  transform: translateY(-2px);
  box-shadow: 0 4px 24px rgba(40, 48, 42, 0.06);
}
.card .num {
  font-family: var(--serif);
  font-size: 0.85rem;
  color: var(--accent);
  letter-spacing: 0.05em;
  font-variation-settings: "opsz" 14;
  margin-bottom: 0.5rem;
  display: block;
}
.card h3 { margin-bottom: 0.5rem; }
.card p { color: var(--ink-2); font-size: 0.97rem; }

/* =========================================================
   Project grid
   ========================================================= */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 2.5rem;
}
.project-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  background: transparent;
}
.project-card .img {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--bg-alt);
  margin-bottom: 1rem;
}
.project-card .img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 600ms cubic-bezier(.2,.7,.2,1);
}
.project-card:hover .img img { transform: scale(1.04); }
.project-card .meta {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 0.35rem;
}
.project-card h3 {
  font-size: 1.35rem;
  margin-bottom: 0.4rem;
  font-variation-settings: "opsz" 30;
}
.project-card p {
  color: var(--ink-2);
  font-size: 0.95rem;
}

/* Featured (alternating) project rows */
.feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  margin-bottom: clamp(2.5rem, 6vw, 4.5rem);
}
.feature:nth-child(even) .feature-img { order: 2; }
.feature-img {
  aspect-ratio: 5 / 4;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--bg-alt);
}
.feature-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.feature h3 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-variation-settings: "opsz" 48;
  margin-bottom: 0.5rem;
}
.feature .meta {
  font-size: 0.78rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--accent-dk);
  margin-bottom: 0.6rem;
  font-weight: 600;
}

@media (max-width: 760px) {
  .feature { grid-template-columns: 1fr; }
  .feature:nth-child(even) .feature-img { order: 0; }
}

/* =========================================================
   Project case study
   ========================================================= */

.case-hero {
  padding: clamp(2.5rem, 6vw, 4rem) 0 clamp(1.5rem, 3vw, 2.5rem);
}
.case-hero .meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin-top: 1rem;
  font-size: 0.92rem;
  color: var(--ink-mute);
}
.case-hero .meta-row strong { color: var(--ink-2); font-weight: 600; }

.case-image {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad);
}
.case-image img {
  width: 100%;
  border-radius: var(--radius);
}

.case-body { padding: clamp(2rem, 5vw, 3.5rem) 0; }
.case-body h2 {
  margin-top: 2.5rem;
  font-size: 1.4rem;
  font-variation-settings: "opsz" 30;
}
.case-body h2:first-child { margin-top: 0; }

.case-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  margin: 1.5rem 0 2.5rem;
}
.case-meta dt {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: var(--ink-mute);
  margin-bottom: 0.3rem;
  font-weight: 600;
}
.case-meta dd {
  margin: 0;
  font-size: 1rem;
  color: var(--ink);
}

/* =========================================================
   Publications list
   ========================================================= */

.pubs-section + .pubs-section { margin-top: 3rem; }
.pubs-section h2 {
  font-size: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 1.25rem;
  font-variation-settings: "opsz" 36;
}
.pub {
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 1.25rem;
  align-items: baseline;
}
.pub-year {
  font-family: var(--serif);
  color: var(--accent);
  font-size: 1.05rem;
  font-variation-settings: "opsz" 24;
}
.pub-body { font-size: 0.97rem; line-height: 1.55; }
.pub-title { font-weight: 600; color: var(--ink); }
.pub-venue { font-style: italic; color: var(--ink-2); }
.pub-meta { color: var(--ink-mute); font-size: 0.88rem; margin-top: 0.25rem; }

@media (max-width: 560px) {
  .pub { grid-template-columns: 1fr; gap: 0.3rem; }
}

/* =========================================================
   Tools / games grid
   ========================================================= */

.tool-row {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--rule);
  align-items: start;
}
.tool-row:last-child { border-bottom: 0; }
.tool-row .img {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--bg-alt);
  border-radius: var(--radius);
}
.tool-row .img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.tool-row h3 {
  margin-top: 0;
  font-size: 1.4rem;
  font-variation-settings: "opsz" 30;
}
.tool-row .meta {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-dk);
  font-weight: 600;
  margin-bottom: 0.4rem;
}
@media (max-width: 720px) {
  .tool-row { grid-template-columns: 1fr; }
}

/* =========================================================
   About specifics
   ========================================================= */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.about-grid .portrait {
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--bg-alt);
  position: sticky;
  top: 88px;
}
.about-grid .portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-grid .portrait { position: static; max-width: 60%; margin: 0 auto; }
}

.fact-grid {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.75rem 1.5rem;
  margin: 1.5rem 0;
}
.fact-grid dt {
  font-weight: 600;
  color: var(--ink-2);
  font-size: 0.92rem;
}
.fact-grid dd {
  margin: 0;
  color: var(--ink-2);
}
@media (max-width: 480px) {
  .fact-grid { grid-template-columns: 1fr; gap: 0.2rem; }
  .fact-grid dt { margin-top: 0.6rem; }
}

.timeline {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
  border-left: 1px solid var(--rule);
}
.timeline li {
  position: relative;
  padding: 0.6rem 0 0.6rem 1.5rem;
  margin: 0;
}
.timeline li::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 1.1rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
}
.timeline .year {
  font-family: var(--serif);
  font-size: 0.95rem;
  color: var(--ink-mute);
  margin-right: 0.5rem;
  font-variation-settings: "opsz" 18;
}

/* =========================================================
   Contact
   ========================================================= */

.contact-card {
  padding: clamp(2rem, 4vw, 3rem);
  background: var(--bg-alt);
  border-radius: var(--radius);
  border: 1px solid var(--rule);
}
.contact-card h2 { margin-bottom: 0.4em; }
.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}
.contact-info dt {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-mute);
  margin-bottom: 0.3rem;
  font-weight: 600;
}
.contact-info dd { margin: 0; font-size: 1.05rem; }
.contact-info a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--accent); }
.contact-info a:hover { color: var(--accent-dk); }

/* =========================================================
   Footer
   ========================================================= */

.site-footer {
  padding: 2.5rem 0 2rem;
  border-top: 1px solid var(--rule);
  font-size: 0.9rem;
  color: var(--ink-mute);
  background: var(--bg);
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-grid a { color: var(--ink-2); text-decoration: none; }
.footer-grid a:hover { color: var(--accent-dk); text-decoration: underline; }
.footer-links { display: flex; gap: 1.5rem; flex-wrap: wrap; }

/* =========================================================
   Misc utilities
   ========================================================= */

.center { text-align: center; }
.muted { color: var(--ink-mute); }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.note {
  background: var(--accent-tn);
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  border-left: 3px solid var(--accent);
}

/* 404 page */
.page-404 {
  text-align: center;
  padding: 6rem 0;
}
.page-404 .big {
  font-family: var(--serif);
  font-size: clamp(5rem, 18vw, 11rem);
  line-height: 1;
  color: var(--accent);
  font-variation-settings: "opsz" 144;
  letter-spacing: -0.04em;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
  html { scroll-behavior: auto; }
}

/* Print */
@media print {
  .site-header, .site-footer, .nav-toggle { display: none; }
  body { background: #fff; color: #000; font-size: 11pt; }
  a { color: #000; text-decoration: underline; }
}