/* ========================================
   /work — Case studies page
   Extends styles.css base
   Card-based layout with visual hierarchy
   ======================================== */

/* --- Page Header --- */
.work-header {
  padding: var(--sp-24) 0 var(--sp-12);
}

.work-intro {
  font-family: var(--sans);
  font-size: clamp(0.8rem, 1vw, 0.9rem);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--sp-4);
}

.work-header h1 {
  font-family: var(--serif);
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 300;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--text);
  max-width: 680px;
}

.work-sub {
  font-size: clamp(1rem, 1.25vw, 1.15rem);
  color: var(--text-secondary);
  max-width: 580px;
  margin-top: var(--sp-6);
  line-height: 1.8;
}

/* --- Cases Container --- */
.cases {
  padding: var(--sp-8) 0 var(--sp-16);
  display: flex;
  flex-direction: column;
  gap: var(--sp-12);
}

/* --- Case Card --- */
.case {
  background: var(--bg-warm);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--accent);
  border-radius: 6px;
  overflow: hidden;
}

/* --- Case Header: Number + Meta + Title --- */
.case-header {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0 var(--sp-8);
  padding: var(--sp-8) var(--sp-8) 0;
  align-items: start;
}

.case-number {
  font-family: var(--serif);
  font-size: clamp(3.5rem, 6vw, 5rem);
  font-weight: 300;
  line-height: 1;
  color: var(--accent);
  opacity: 0.25;
  grid-row: 1 / 3;
  padding-right: var(--sp-4);
  user-select: none;
}

.case-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-3);
  font-size: 0.85rem;
  color: var(--text-tertiary);
  padding-top: var(--sp-2);
}

.case-tag {
  font-family: var(--sans);
  font-weight: 500;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-subtle);
  padding: 3px var(--sp-2);
  border-radius: 3px;
}

.case-org { font-weight: 400; color: var(--text-secondary); }
.case-date { color: var(--text-tertiary); }
.case-meta-sep { color: var(--border); }

.case-title {
  font-family: var(--serif);
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  font-weight: 300;
  line-height: 1.3;
  color: var(--text);
  margin-top: var(--sp-2);
}

/* --- Case Body: Two-column narrative --- */
.case-body {
  padding: var(--sp-6) var(--sp-8);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-6);
}

@media (min-width: 768px) {
  .case-body {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-8) var(--sp-12);
  }

  /* "The situation" spans full width as the intro */
  .case-section--situation {
    grid-column: 1 / -1;
  }
}

.case-section h3 {
  font-family: var(--sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--sp-2);
  padding-bottom: var(--sp-2);
  border-bottom: 1px solid var(--border-subtle);
  display: inline-block;
}

.case-section p {
  font-size: clamp(0.88rem, 1.05vw, 0.95rem);
  color: var(--text-secondary);
  line-height: 1.85;
}

/* --- Metrics Strip: Cards at the bottom --- */
.case-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border-subtle);
  border-top: 1px solid var(--border-subtle);
}

.metric {
  background: var(--bg-elevated);
  padding: var(--sp-6) var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
  text-align: center;
}

.metric-num {
  font-family: var(--serif);
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 300;
  color: var(--accent);
  line-height: 1;
}

.metric-label {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  line-height: 1.4;
  margin-top: var(--sp-1);
}

/* --- Image Placeholder --- */
.case-visual {
  margin: 0 var(--sp-8) var(--sp-4);
  background: var(--bg-elevated);
  border: 1px dashed var(--border);
  border-radius: 4px;
  padding: var(--sp-8) var(--sp-6);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 140px;
  position: relative;
  overflow: hidden;
}

.case-visual-icon {
  font-size: 2.5rem;
  opacity: 0.15;
  position: absolute;
  right: var(--sp-6);
  top: 50%;
  transform: translateY(-50%);
}

.case-visual-text {
  font-family: var(--sans);
  font-size: 0.8rem;
  color: var(--text-tertiary);
  text-align: center;
  line-height: 1.6;
  max-width: 320px;
}

.case-visual-text strong {
  color: var(--text-secondary);
  font-weight: 500;
  display: block;
  margin-bottom: var(--sp-1);
}

/* When a real image is present */
.case-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 3px;
}

.case-visual--has-image {
  padding: 0;
  border: none;
  min-height: 200px;
  max-height: 260px;
}

/* --- Resume Download --- */
.resume-download {
  padding: var(--sp-12) 0;
}

.resume-layout {
  background: var(--bg-warm);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: var(--sp-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-8);
  flex-wrap: wrap;
}

.resume-layout h2 {
  font-family: var(--serif);
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  font-weight: 300;
  color: var(--text);
}

.resume-layout p {
  font-size: clamp(0.88rem, 1.05vw, 0.95rem);
  color: var(--text-secondary);
  max-width: 460px;
  margin-top: var(--sp-2);
}

.resume-btn {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--bg);
  background: var(--accent);
  padding: var(--sp-3) var(--sp-6);
  border-radius: 4px;
  text-decoration: none;
  transition: background 0.3s, transform 0.2s;
  white-space: nowrap;
}

.resume-btn:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

/* --- Mobile Adjustments --- */
@media (max-width: 767px) {
  .work-header { padding: var(--sp-16) 0 var(--sp-8); }
  .cases { padding: var(--sp-4) 0 var(--sp-12); gap: var(--sp-8); }

  .case-header {
    grid-template-columns: 1fr;
    padding: var(--sp-6) var(--sp-6) 0;
  }

  .case-number {
    grid-row: auto;
    font-size: 3rem;
    margin-bottom: calc(-1 * var(--sp-2));
  }

  .case-body { padding: var(--sp-4) var(--sp-6); }

  .case-metrics {
    grid-template-columns: 1fr;
  }

  .metric { text-align: left; padding: var(--sp-4) var(--sp-6); }

  .case-visual { margin: 0 var(--sp-6) var(--sp-4); }

  .resume-layout {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--sp-6);
  }
}

/* Enhanced image treatment for case visuals */
.case-visual--has-image img {
  filter: grayscale(25%) contrast(1.05) brightness(0.9);
  transition: filter 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.case:hover .case-visual--has-image img {
  filter: grayscale(0%) contrast(1) brightness(0.95);
}