/* =============================================================
   Projects page — specific styles (uses styles.css tokens)
   ============================================================= */

/* Page hero (compact) ------------------------------------------ */
.page-hero {
  padding: 140px 0 clamp(48px, 6vw, 96px);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--border) 1px, transparent 1px);
  background-size: clamp(80px, 8vw, 140px) 100%;
  opacity: 0.5;
  mask-image: linear-gradient(to bottom, transparent, black 30%, black 70%, transparent);
  z-index: -1;
}

.page-hero-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: clamp(40px, 6vw, 96px);
  align-items: end;
}
.page-hero h1 {
  font-size: clamp(40px, 6vw, 92px);
  line-height: 0.96;
  font-weight: 700;
  letter-spacing: -0.035em;
  margin-top: 24px;
  max-width: 16ch;
}
.page-hero h1 em {
  font-family: var(--display);
  font-style: normal;
  font-weight: 700;
  color: var(--yellow);
  display: inline-block;
}
.page-lede {
  margin-top: 28px;
  max-width: 52ch;
  font-size: clamp(16px, 1.3vw, 19px);
  color: var(--ink-2);
  line-height: 1.6;
}
.page-lede em {
  font-family: var(--display);
  font-style: normal;
  color: var(--yellow);
  font-weight: 600;
}

.page-stats {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.ps-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border-soft);
}
.ps-row:last-child { border-bottom: none; }
.ps-k {
  font-family: var(--display);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--yellow);
  line-height: 1;
}
.ps-l {
  font-family: var(--display);
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: right;
  max-width: 22ch;
}

/* Filter bar --------------------------------------------------- */
.filter-bar {
  background: var(--surface-1);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 64px;
  z-index: 10;
  backdrop-filter: blur(10px);
}
.fb-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 16px 0;
  flex-wrap: wrap;
}
.fb-label {
  font-family: var(--display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.fb-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.fb-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: transparent;
  color: var(--ink-2);
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  font-family: var(--display);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}
.fb-chip small {
  font-size: 10px;
  color: var(--ink-3);
  font-weight: 600;
}
.fb-chip:hover { color: var(--ink); border-color: var(--ink-3); }
.fb-chip.is-active {
  background: var(--yellow);
  color: var(--carbon);
  border-color: var(--yellow);
}
.fb-chip.is-active small { color: var(--carbon); opacity: 0.7; }
.fb-meta {
  margin-left: auto;
  font-family: 'JetBrains Mono', monospace, var(--body);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: 0.04em;
}

/* Project list ------------------------------------------------- */
.projects-list {
  padding: clamp(40px, 5vw, 64px) 0 var(--section-y);
}

.project {
  border-bottom: 1px solid var(--border-soft);
  position: relative;
}
.project:first-child { border-top: 1px solid var(--border-soft); }
.project:hover { background: color-mix(in srgb, var(--surface-1) 60%, transparent); }

/* Row trigger — full-width, no chrome */
.proj-row {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: baseline;
  gap: clamp(20px, 3vw, 56px);
  width: 100%;
  padding: clamp(28px, 4vw, 52px) 8px;
  background: transparent;
  border: none;
  text-align: left;
  cursor: pointer;
  color: var(--ink);
  font-family: var(--display);
  transition: padding 0.4s var(--ease);
}
.proj-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.06em;
  font-weight: 500;
  transition: color 0.3s var(--ease);
  min-width: 36px;
}
.project:hover .proj-num,
.project.is-open .proj-num { color: var(--yellow); }

.proj-title {
  font-family: var(--display);
  font-size: clamp(22px, 2.6vw, 36px);
  font-weight: 500;
  letter-spacing: -0.022em;
  line-height: 1.15;
  margin: 0;
  color: var(--ink);
  transition: transform 0.4s var(--ease);
  text-wrap: balance;
}
.project:hover .proj-title,
.project.is-open .proj-title {
  transform: translateX(6px);
}

.proj-loc {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
  white-space: nowrap;
}
.project:hover .proj-loc,
.project.is-open .proj-loc {
  opacity: 1;
  transform: translateY(0);
}

.proj-toggle {
  width: 28px;
  height: 28px;
  position: relative;
  color: var(--ink-3);
  transition: color 0.3s var(--ease);
  flex-shrink: 0;
}
.project:hover .proj-toggle,
.project.is-open .proj-toggle { color: var(--yellow); }
.proj-toggle svg {
  position: absolute;
  inset: 0;
  width: 28px;
  height: 28px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  transition: opacity 0.35s var(--ease), transform 0.4s var(--ease);
}
.ico-minus { opacity: 0; transform: rotate(-90deg); }
.project.is-open .ico-plus { opacity: 0; transform: rotate(180deg); }
.project.is-open .ico-minus { opacity: 1; transform: rotate(0); }

/* Expanded body ------------------------------------------------ */
.proj-body {
  padding: 0 8px clamp(40px, 5vw, 72px);
  animation: pbReveal 0.5s var(--ease);
}
@keyframes pbReveal {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.pb-grid {
  display: grid;
  grid-template-columns: 4fr 6fr;
  gap: clamp(28px, 4vw, 64px);
  align-items: stretch;
}
.pb-photo {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 12px;
  overflow: hidden;
  background: var(--surface-2);
  border: 1px solid var(--border-soft);
  object-fit: cover;
  object-position: center;
}
.pb-details {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.pb-meta {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-soft);
}
.pb-cat {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-3);
  margin-bottom: 10px;
}
.pb-tonnage {
  display: block;
  font-family: var(--display);
  font-size: clamp(36px, 4.2vw, 56px);
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1;
}
.pb-tonnage small {
  font-family: var(--display);
  font-size: 14px;
  font-weight: 400;
  color: var(--ink-3);
  letter-spacing: 0;
  margin-left: 6px;
}
.pb-sdgs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-end;
  max-width: 240px;
}
.pb-sdgs span {
  display: inline-block;
  padding: 5px 10px;
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-2);
  white-space: nowrap;
}
.pb-desc {
  font-size: clamp(15px, 1.15vw, 17px);
  color: var(--ink-2);
  line-height: 1.65;
  max-width: 60ch;
}
.pb-desc em {
  font-family: var(--display);
  font-style: normal;
  color: var(--yellow);
  font-weight: 600;
}

.pb-foot {
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--border-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.pb-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag {
  display: inline-block;
  padding: 5px 10px;
  border: 1px solid var(--border-soft);
  color: var(--ink-3);
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: 4px;
}
.tag--accent {
  border-color: color-mix(in srgb, var(--yellow) 30%, transparent);
  color: var(--yellow);
  background: color-mix(in srgb, var(--yellow) 8%, transparent);
}
.pb-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  border-bottom: 1px solid var(--ink-3);
  padding-bottom: 4px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), gap 0.2s var(--ease);
}
.pb-link:hover { color: var(--yellow); border-color: var(--yellow); gap: 12px; }

/* CTA strip ---------------------------------------------------- */
.cta-strip {
  background: var(--surface-1);
  border-top: 1px solid var(--border);
  padding: clamp(56px, 7vw, 100px) 0;
}
.cta-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  align-items: end;
  gap: clamp(40px, 6vw, 96px);
}
.cta-inner h2 {
  font-size: clamp(36px, 4.8vw, 72px);
  margin-top: 18px;
  letter-spacing: -0.035em;
  line-height: 0.98;
}
.cta-inner h2 em {
  font-family: var(--display);
  font-style: normal;
  font-weight: 700;
  color: var(--yellow);
}
.cta-inner p {
  margin-top: 22px;
  max-width: 48ch;
  color: var(--ink-2);
  font-size: clamp(15px, 1.15vw, 17px);
  line-height: 1.6;
}
.cta-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: stretch;
}

/* Responsive --------------------------------------------------- */
@media (max-width: 960px) {
  .page-hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .proj-row {
    grid-template-columns: auto 1fr auto;
    grid-template-rows: auto auto;
    gap: 12px 18px;
  }
  .proj-loc {
    grid-column: 2 / 3;
    grid-row: 2;
    opacity: 1;
    transform: none;
  }
  .pb-grid { grid-template-columns: 1fr; gap: 24px; }
  .pb-meta { flex-direction: column; gap: 16px; }
  .pb-sdgs { justify-content: flex-start; max-width: none; }
  .pb-foot { flex-direction: column; align-items: flex-start; gap: 16px; }
  .cta-inner { grid-template-columns: 1fr; align-items: start; }
  .cta-actions { flex-direction: row; flex-wrap: wrap; }
  .filter-bar { top: 64px; }
  .fb-meta { display: none; }
}

@media (max-width: 540px) {
  .proj-num { font-size: 11px; min-width: 28px; }
  .proj-title { font-size: 20px; }
  .pb-tonnage { font-size: 36px; }
  .cta-actions { flex-direction: column; align-items: stretch; }
}