/* =============================================================================
   STYLES4
   Portfolio V4 — index4.html components
   ============================================================================= */

@import url('tokens.css');
@import url('styles.css');


/* NAV */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-20) 48px;
  background-color: var(--color-bg);
  transition: background-color var(--transition-base),
              backdrop-filter var(--transition-base);
  /* border-bottom: 0.5px solid var(--color-border-faint); */
}

.nav.is-scrolled {
  background-color: rgba(244, 244, 246, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 0.5px solid var(--color-border-faint);

}

.logo {
  font-family: var(--font-family-display);
  font-size: 18px;
  letter-spacing: -0.5px;
  color: var(--color-text);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-family);
  font-size: var(--font-size-body-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.nav-links a:hover, .nav-links a.is-active { color: var(--color-text); }

/* HERO */
.hero {
  padding: var(--space-48);
}

.hero-headline {
  font-family: var(--font-family-display);
  font-size: var(--font-size-hero-xl);
  font-weight: var(--font-weight-medium);
  line-height: 1.0;
  color: var(--color-text);
  max-width: 720px;
}

.hero-headline em {
  font-size: var(--font-size-hero);
  font-style: italic;
  color: var(--color-accent);
}

.hero-sub {
  margin-top: 24px;
  font-family: var(--font-family);
  font-size: clamp(16px, 1.6vw, 20px);
  font-weight: var(--font-weight-regular);
  line-height: 1.5;
  color: var(--color-text-muted);
  /* max-width: 560px; */
}

/* SECTION LABEL */
.section-label {
  font-family: var(--font-family-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 16px 48px 16px;
}

/* WORK LIST */
.work-list {
  padding: 0 var(--space-48) var(--space-80);
}

.case {
  display: grid;
  grid-template-columns: var(--space-56) 1fr 540px;
  gap: 0;
  border-top: 0.5px solid var(--color-border-faint);
  padding: 40px 0;
  align-items: start;
  cursor: default;
}

/* .case:last-child {
  border-bottom: 0.5px solid var(--color-border-faint);
} */

.case-num {
  font-family: var(--font-family-mono);
  font-size: 12px;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
}

.case-content { padding-right: var(--space-64); }

.case-company {
  font-family: var(--font-family-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-12);
}

.case-title {
  font-family: var(--font-family-display);
  font-size: var(--font-size-case-title);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-title);
  color: var(--color-text);
  margin-bottom: var(--space-16);
}

.case-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: var(--space-24);
  font-family: var(--font-family-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 1px solid rgba(26, 23, 20, 0.25);
  padding-bottom: 2px;
  transition: border-color 0.2s, color 0.2s;
}

.case-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.case-arrow {
  display: inline-block;
  font-size: 13px;
  transition: transform 0.2s;
}

.case-link:hover .case-arrow { transform: translateX(3px); }

.case-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-img);
  /* overflow: hidden; */
  position: relative;
}

.case-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* .tag {
  position: absolute;
  bottom: 12px;
  left: 12px;
  font-family: var(--font-family-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--color-tag-bg);
  color: var(--color-text);
  padding: 4px 10px;
  border-radius: var(--radius-tag);
} */

/* A BIT MORE */
.more-list {
  padding: 0 var(--space-48) var(--space-80);
}

.case-minimal {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 0.5px solid var(--color-border-faint);
  padding: 28px 0;
  align-items: center;
}

.case-minimal .case-title {
  margin-bottom: 0;
  font-size: var(--font-size-case-minimal);
}

.case-minimal .case-title a {
  text-decoration: none;
}

.case-minimal .case-link {
  font-family: var(--font-family-display);
  font-size: var(--font-size-case-minimal);
  border: none;
  padding: 0;
  margin: 0;
  text-decoration: none;

}

/* RULE ACCENT */
.rule {
  width: 32px;
  height: 1.5px;
  background: var(--color-accent);
  margin-bottom: 24px;
}

/* FOOTER */
.footer {
  border-top: 0.5px solid var(--color-border-faint);
  padding: 32px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
  align-items: center;
}

.footer-links a {
  font-family: var(--font-family);
  font-size: var(--font-size-body-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
  cursor: pointer;
}

.footer-links a:hover { color: var(--color-text); }

.footer-sep {
  width: 1px;
  height: 12px;
  background: rgba(26, 23, 20, 0.2);
}

.footer-copy {
  font-family: var(--font-family);
  font-size: var(--font-size-body-sm);
  color: var(--color-text-muted);
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .nav { padding: 20px 24px; }
  .hero { padding: 40px 24px 40px; }
  .section-label { padding: 12px 24px 12px; }
  .work-list { padding: 0 24px 48px; }
  .more-list { padding: 0 24px 48px; }
  .case { grid-template-columns: 1fr; grid-template-rows: auto auto; padding: var(--space-48) 0; }
  .case-num { display: none; }
  .case-content { padding-right: 0; margin-bottom: var(--space-32); }
  .case-image { grid-column: 1; }
  .case-minimal { grid-template-columns: 1fr; }
  .footer { padding: 24px; flex-direction: row; gap: var(--space-16); align-items: center; }
  .footer-links { gap: var(--space-16); }
}