/*
 * Modern editorial styles for the KTCHN NYC legacy archive.
 * This stylesheet introduces a more polished layout with cards, timeline and
 * improved typography while remaining lightweight and accessible.
 */

/* CSS variables for colour palette and sizing */
:root {
  --bg-color: #f7f7f7;
  --card-color: #ffffff;
  --text-color: #333333;
  --muted-color: #555555;
  --border-color: #e0e0e0;
  --accent-color: #2364aa;
  --accent-light: #eef4fa;
  --max-width: 960px;
}

/* Base styles */
body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  background-color: var(--bg-color);
  color: var(--text-color);
}

/* Container limits width and centres content */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1rem;
}

/* Sticky navigation */
nav.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--card-color);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}
nav.navbar .container {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 0.75rem 1rem;
}
nav.navbar ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}
nav.navbar a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 600;
  padding-bottom: 0.25rem;
}
nav.navbar a:hover {
  color: var(--accent-color);
}
nav.navbar a.active {
  color: var(--accent-color);
  border-bottom: 2px solid var(--accent-color);
}
nav.navbar a:focus {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

/* Hero section */
.hero {
  background: linear-gradient(180deg, var(--bg-color) 0%, var(--card-color) 100%);
  padding: 4rem 1rem 5rem;
  text-align: center;
}
.hero .badge {
  display: inline-block;
  background-color: var(--accent-light);
  color: var(--accent-color);
  padding: 0.4rem 0.8rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}
.hero h1 {
  margin: 0.5rem 0;
  font-size: clamp(2.5rem, 5vw + 1rem, 3.25rem);
  font-weight: 700;
}
.hero h2 {
  margin: 0.5rem 0 1.5rem;
  font-size: clamp(1.25rem, 3vw + 0.5rem, 1.75rem);
  font-weight: 400;
  color: var(--muted-color);
}
.hero .callout-hero {
  display: inline-block;
  background-color: var(--accent-light);
  border-left: 4px solid var(--accent-color);
  padding: 1rem 1.25rem;
  border-radius: 4px;
  max-width: 640px;
  margin: 0 auto;
  text-align: left;
}
.hero .callout-hero p {
  margin: 0;
  color: var(--text-color);
  font-size: 1rem;
}

/* Cards grid for main sections */
.cards-grid {
  display: grid;
  gap: 2rem;
  margin-top: 3rem;
}
@media (min-width: 700px) {
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .cards-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.card {
  background-color: var(--card-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
  padding: 1.5rem;
}
.card h2 {
  margin-top: 0;
  margin-bottom: 1rem;
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--text-color);
}
.card p {
  margin-bottom: 1rem;
  color: var(--muted-color);
  font-size: 1rem;
}

/* Timeline component */
.timeline {
  margin-top: 4rem;
}
.timeline h2 {
  font-size: 1.75rem;
  margin-bottom: 1rem;
  font-weight: 600;
}
.timeline-items {
  position: relative;
  margin-left: 1rem;
  border-left: 2px solid var(--accent-color);
  padding-left: 1rem;
}
.timeline-item {
  position: relative;
  margin-bottom: 1.5rem;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -1rem;
  top: 0.5rem;
  width: 12px;
  height: 12px;
  background-color: var(--accent-color);
  border-radius: 50%;
}
.timeline-item h3 {
  margin: 0 0 0.25rem;
  font-size: 1.25rem;
  font-weight: 600;
}
.timeline-item p {
  margin: 0;
  color: var(--muted-color);
  font-size: 0.95rem;
}

/* Pull quote */
.pull-quote {
  margin: 3rem 0;
  border-left: 4px solid var(--accent-color);
  background-color: var(--accent-light);
  padding: 1rem 1.5rem;
  border-radius: 4px;
  font-style: italic;
  color: var(--muted-color);
}
.pull-quote p {
  margin: 0;
}

/* Callout link/button */
.callout-link {
  text-align: center;
  margin-top: 3rem;
}
.callout-button {
  display: inline-block;
  background-color: var(--accent-color);
  color: #fff;
  padding: 0.8rem 1.5rem;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 600;
}
.callout-button:hover {
  background-color: #1a4d80;
}
.callout-button:focus {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

/* Category cards for about page */
.categories-grid {
  display: grid;
  gap: 2rem;
  margin-top: 3rem;
}
@media (min-width: 700px) {
  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
.category-card {
  background-color: var(--card-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
}
.category-card h3 {
  background-color: var(--accent-light);
  color: var(--accent-color);
  margin: 0;
  padding: 1rem;
  font-size: 1.5rem;
  font-weight: 600;
}
.category-card .item {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border-color);
}
.category-card .item:first-of-type {
  border-top: none;
}
.category-card .item strong {
  display: block;
  font-size: 1.2rem;
  margin-bottom: 0.25rem;
  color: var(--text-color);
}
.category-card .item p {
  margin: 0 0 0.5rem;
  color: var(--muted-color);
  font-size: 0.95rem;
}
.category-card .item a {
  color: var(--accent-color);
  text-decoration: none;
  font-size: 0.95rem;
}
.category-card .item a:hover {
  text-decoration: underline;
}
.category-card .item a:focus {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

/* Footer */
footer {
  background-color: var(--card-color);
  border-top: 1px solid var(--border-color);
  padding: 2rem 1rem;
  font-size: 0.9rem;
  color: var(--muted-color);
}
footer .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  text-align: center;
}
footer a {
  color: var(--accent-color);
  text-decoration: none;
}
footer a:hover {
  text-decoration: underline;
}
footer a:focus {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

/* --- Optional hero image support (hp-hero.jpg / about-hero.jpg) --- */
.hero{
  position: relative;
  overflow: hidden;
}
.hero .hero-media{
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero .hero-media img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.92) contrast(0.98);
  opacity: 0.95;
}
.hero .hero-media::after{
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(12, 16, 22, 0.35), rgba(247, 248, 250, 0.75)),
    radial-gradient(900px 520px at 18% 8%, rgba(46, 111, 208, 0.10), transparent 62%),
    radial-gradient(720px 520px at 82% 18%, rgba(46, 111, 208, 0.08), transparent 58%);
}
.hero .container{
  position: relative;
  z-index: 1;
}