/* ==========================================================================
   Mia Chyung — Portfolio
   ========================================================================== */

:root {
  --bg: #F7F5EF;
  --bg-alt: #EFEBE0;
  --ink: #14150F;
  --ink-soft: #4A4B42;
  --accent: #C6F135;
  --accent-ink: #14150F;
  --line: rgba(20, 21, 15, 0.12);
  --white: #FFFFFF;

  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;

  --wrap: 1180px;
  --radius: 18px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14150F;
    --bg-alt: #1C1D15;
    --ink: #F7F5EF;
    --ink-soft: #B9B9AC;
    --line: rgba(247, 245, 239, 0.14);
    --white: #1C1D15;
  }
}

:root[data-theme="dark"] {
  --bg: #14150F;
  --bg-alt: #1C1D15;
  --ink: #F7F5EF;
  --ink-soft: #B9B9AC;
  --line: rgba(247, 245, 239, 0.14);
  --white: #1C1D15;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.08;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}

p { margin: 0 0 1em; color: var(--ink-soft); }

a { color: inherit; text-decoration: none; }

.eyebrow {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-soft);
  margin: 0 0 14px;
}

/* ---------------- Header ---------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  padding-bottom: 18px;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.08em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 14px;
  font-weight: 500;
}

.main-nav a {
  position: relative;
  padding: 4px 0;
}

.main-nav a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.main-nav a:not(.nav-cta):hover::after { transform: scaleX(1); }

.nav-cta {
  background: var(--ink);
  color: var(--bg);
  padding: 9px 18px;
  border-radius: 999px;
  transition: background 0.2s ease;
}

.nav-cta:hover { background: var(--accent); color: var(--accent-ink); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
}

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

.hero {
  padding: 96px 0 0;
  overflow: hidden;
}

.hero-grid { padding-bottom: 64px; }

.hero-copy { max-width: 780px; }

.hero h1 {
  font-size: clamp(2.4rem, 5.2vw, 4.4rem);
  margin-bottom: 0.4em;
}

.hero-intro {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  max-width: 620px;
  color: var(--ink-soft);
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 36px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  border: 1.5px solid transparent;
  transition: transform 0.15s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
}

.btn-primary:hover { background: var(--ink); color: var(--bg); }

.btn-outline {
  border-color: var(--ink);
  color: var(--ink);
}

.btn-outline:hover { background: var(--ink); color: var(--bg); }

.btn-dark {
  background: var(--ink);
  color: var(--bg);
}

.btn-dark:hover { background: var(--accent); color: var(--accent-ink); }

/* Marquee */

.marquee {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bg-alt);
  overflow: hidden;
  white-space: nowrap;
  padding: 16px 0;
}

.marquee-track {
  display: inline-flex;
  gap: 14px;
  animation: scroll 28s linear infinite;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.marquee-track span:nth-child(2n) { color: var(--accent); }

@keyframes scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none; }
}

/* ---------------- Section shared ---------------- */

section { padding: 96px 0; }

.section-head { max-width: 640px; margin-bottom: 56px; }
.section-head h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); }

/* ---------------- Work grid ---------------- */

.work-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.case-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s ease, grid-column 0.2s ease;
}

.case-card.is-expanded { grid-column: 1 / -1; }

.case-card:hover { border-color: var(--ink); }

.case-toggle {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 32px;
  cursor: pointer;
  font: inherit;
  color: inherit;
  display: block;
}

.case-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.tags { display: flex; flex-wrap: wrap; gap: 8px; }

.tags span {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--bg-alt);
  color: var(--ink-soft);
  padding: 6px 12px;
  border-radius: 999px;
}

.case-plus {
  flex: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1.5px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 500;
  transition: transform 0.25s ease, background 0.2s ease, color 0.2s ease;
}

.case-card h3 {
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.case-oneliner { margin-bottom: 20px; }

.case-cta {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink);
  border-bottom: 1.5px solid var(--accent);
  padding-bottom: 2px;
}

.case-toggle[aria-expanded="true"] .case-plus {
  transform: rotate(45deg);
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}

.case-detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.case-detail-inner {
  padding: 0 32px 36px;
  border-top: 1px solid var(--line);
  padding-top: 28px;
  margin: 0 32px;
}

.case-detail-inner h4 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  margin-top: 28px;
}

.case-detail-inner h4:first-child { margin-top: 0; }

.case-detail-inner ul { padding-left: 20px; margin: 0 0 1em; color: var(--ink-soft); }
.case-detail-inner li { margin-bottom: 10px; }

.case-detail-inner > p,
.case-detail-inner > ul {
  max-width: 640px;
}

.case-why {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px dashed var(--line);
}

.case-why strong { color: var(--ink); }

/* Tables */

.table-wrap { overflow-x: auto; margin-bottom: 8px; }

table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  font-size: 14px;
}

th, td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

th {
  font-family: var(--font-display);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

td:first-child { font-weight: 600; color: var(--ink); }
td:last-child { color: var(--ink-soft); }

/* Visual placeholders */

.visual-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 20px;
}

.visual-placeholder {
  border: 1.5px dashed var(--line);
  border-radius: 12px;
  padding: 24px 12px;
  text-align: center;
  background: var(--bg-alt);
}

.visual-placeholder span {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink);
  background: var(--accent);
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}

.visual-placeholder p {
  font-size: 12px;
  margin: 0;
  color: var(--ink-soft);
}

/* ---------------- About ---------------- */

.about { background: var(--bg-alt); }

.about-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 56px;
  align-items: start;
}

.about-mark {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--accent);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-copy p { max-width: 620px; }

.about-location { font-weight: 600; color: var(--ink); }

.looking-for {
  margin-top: 32px;
  padding: 24px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.looking-for p:last-child { margin-bottom: 0; color: var(--ink); }

/* ---------------- Contact ---------------- */

.contact {
  background: var(--ink);
  color: var(--bg);
}

.contact-inner { text-align: center; }

.contact h2 {
  color: var(--bg);
  font-size: clamp(2.2rem, 5vw, 3.6rem);
}

.contact p {
  color: color-mix(in srgb, var(--bg) 70%, transparent);
  font-size: 1.1rem;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.contact-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}

.contact .btn-dark {
  background: var(--bg);
  color: var(--ink);
}

.contact .btn-dark:hover {
  background: var(--accent);
  color: var(--accent-ink);
}

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

.site-footer {
  border-top: 1px solid var(--line);
  padding: 28px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--ink-soft);
}

.footer-inner a:hover { color: var(--ink); }

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

@media (max-width: 860px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }

  .main-nav.open {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg);
    padding: 20px 24px 28px;
    border-bottom: 1px solid var(--line);
    gap: 18px;
  }

  .work-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .about-mark { width: 120px; height: 120px; font-size: 2rem; }
  .visual-row { grid-template-columns: 1fr; }
  section { padding: 64px 0; }
  .hero { padding-top: 56px; }
}

/* Stacked tables on narrow screens: a 3-column table reads better as
   label/value rows than as a squeezed grid. */
@media (max-width: 640px) {
  table { table-layout: auto; }
  colgroup { display: none; }

  thead { display: none; }

  table, tbody, tr, td { display: block; width: auto !important; }

  tr {
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
  }

  tr:last-child { border-bottom: none; }

  td {
    padding: 3px 0;
    border-bottom: none;
  }

  td::before {
    content: attr(data-label);
    display: block;
    font-family: var(--font-display);
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--ink-soft);
    margin-bottom: 2px;
  }

  td:first-child { padding-top: 0; }
}