/* ============================================================
   Elysian False Ceiling — Projects Landing Page Styles
   File: /projects/projects.css
   Imports: /global-assets/css/tokens.css (via index.html)
   ============================================================ */

/* ── Filter Bar ─────────────────────────────────────────────── */
.filter-bar {
  background-color: var(--color-secondary);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: var(--navbar-height); /* below fixed navbar */
  z-index: 100;
  padding: var(--space-4) 0;
  transition: box-shadow 250ms ease;
}

.filter-bar.is-sticky {
  box-shadow: var(--shadow-md);
}

.filter-bar-inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.filter-label {
  font-family: var(--font-body);
  font-size: var(--text-body-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

/* Dropdowns */
.filter-select {
  font-family: var(--font-body);
  font-size: var(--text-body-sm);
  color: var(--color-text-primary);
  background-color: var(--color-secondary);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 8px 32px 8px 12px;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236B6B6B' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  transition: border-color 250ms ease, box-shadow 250ms ease;
  min-width: 160px;
}

.filter-select:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-color: var(--color-accent);
}

.filter-select:hover {
  border-color: var(--color-accent);
}

/* Type toggle buttons */
.filter-type-group {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.filter-type-btn {
  font-family: var(--font-body);
  font-size: var(--text-body-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  background: transparent;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 7px 16px;
  cursor: pointer;
  transition: color 250ms ease, border-color 250ms ease, background-color 250ms ease;
  white-space: nowrap;
}

.filter-type-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-text-primary);
}

.filter-type-btn.active {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-primary);
  font-weight: 600;
}

.filter-type-btn:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Clear filters button */
.filter-clear-btn {
  font-family: var(--font-body);
  font-size: var(--text-body-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 7px 8px;
  text-decoration: underline;
  text-underline-offset: 2px;
  margin-left: auto;
  transition: color 250ms ease;
  display: none; /* shown via JS when any filter is active */
}

.filter-clear-btn:hover {
  color: var(--color-text-primary);
}

.filter-clear-btn.visible {
  display: block;
}

/* ── Result Count ────────────────────────────────────────────── */
.projects-result-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) 0 var(--space-4);
  gap: var(--space-4);
}

.result-count {
  font-family: var(--font-body);
  font-size: var(--text-body-sm);
  color: var(--color-text-secondary);
}

.result-count strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

/* ── Projects Grid ───────────────────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  padding-bottom: var(--space-16);
}

@media (max-width: 1023px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }
}

@media (max-width: 767px) {
  .projects-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

/* ── Project Card (Component 6) ─────────────────────────────── */
.project-card {
  display: block;
  text-decoration: none;
  color: inherit;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-secondary);
  box-shadow: var(--shadow-sm);
  transition: transform 250ms ease, box-shadow 250ms ease;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.project-card:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
}

/* Card image area — 4:3 ratio */
.project-card-image {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--color-surface);
}

.project-card-image picture {
  display: block;
  width: 100%;
  height: 100%;
}

.project-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 1;
  transition: transform 400ms ease;
}

.project-card:hover .project-card-image img {
  transform: scale(1.04);
}

/* Hover overlay */
.project-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.82) 0%, rgba(0,0,0,0.30) 55%, transparent 100%);
  opacity: 0;
  transition: opacity 300ms ease;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-5);
  gap: var(--space-1);
}

.project-card:hover .project-card-overlay {
  opacity: 1;
}

.project-card-title {
  font-family: var(--font-heading);
  font-size: var(--text-h5);
  font-weight: 500;
  color: var(--color-text-light);
  line-height: 1.3;
  margin: 0;
}

.project-card-location {
  font-family: var(--font-body);
  font-size: var(--text-body-sm);
  color: var(--color-accent-light);
  display: flex;
  align-items: center;
  gap: 4px;
}

.project-card-service {
  font-family: var(--font-body);
  font-size: var(--text-caption);
  color: rgba(255,255,255,0.75);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Card tags below image */
.project-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-5);
}

.tag {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.tag--service {
  background-color: rgba(201, 168, 76, 0.12);
  color: var(--color-accent-hover);
  border: 1px solid rgba(201, 168, 76, 0.25);
}

.tag--type {
  background-color: var(--color-surface);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.tag--area {
  background-color: var(--color-surface);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

/* ── Scroll reveal on cards ─────────────────────────────────── */
.project-card.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 600ms ease, transform 600ms ease;
}

.project-card.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Load More ───────────────────────────────────────────────── */
.load-more-wrap {
  display: flex;
  justify-content: center;
  padding: var(--space-8) 0 var(--space-16);
}

#loadMoreBtn {
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: 500;
  color: var(--color-text-primary);
  background: transparent;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 14px 48px;
  cursor: pointer;
  transition: border-color 250ms ease, color 250ms ease, background-color 250ms ease, transform 250ms ease;
  display: none; /* managed by JS */
}

#loadMoreBtn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-hover);
  background-color: rgba(201, 168, 76, 0.05);
  transform: scale(1.02);
}

#loadMoreBtn:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

#loadMoreBtn.visible {
  display: block;
}

/* ── Empty State ─────────────────────────────────────────────── */
#emptyState {
  display: none;
  text-align: center;
  padding: var(--space-24) var(--space-6);
}

#emptyState.visible {
  display: block;
}

.empty-state-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-6);
  opacity: 0.25;
}

.empty-state-title {
  font-family: var(--font-heading);
  font-size: var(--text-h3);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.empty-state-text {
  font-size: var(--text-body);
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

/* ── Projects Section Wrapper ────────────────────────────────── */
.projects-section {
  background-color: var(--color-secondary);
  padding-top: var(--space-8);
  padding-bottom: var(--space-4);
}

/* ══════════════════════════════════════════════════════════════
   INDIVIDUAL PROJECT PAGE STYLES
   Used by /projects/[slug]/index.html
   Requires: global CSS + /services/service-page.css (gallery, related)
   ══════════════════════════════════════════════════════════════ */

/* ── Project Hero (65vh) ─────────────────────────────────────── */
.project-hero {
  position: relative;
  min-height: 65vh;
  display: flex;
  align-items: flex-end;
  padding-bottom: var(--space-16);
  overflow: hidden;
}

.project-hero .hero-bg {
  position: absolute;
  inset: 0;
  display: block;
}

.project-hero .hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 1;
}

.project-hero .hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.80) 0%,
    rgba(0, 0, 0, 0.45) 50%,
    rgba(0, 0, 0, 0.20) 100%
  );
}

.project-hero .hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
  padding-top: calc(var(--navbar-height) + var(--space-10));
  padding-bottom: var(--space-8);
}

.project-hero .hero-title {
  font-family: var(--font-heading);
  font-size: var(--text-h1);
  font-weight: 600;
  color: var(--color-text-light);
  line-height: 1.15;
  max-width: 900px;
  margin: var(--space-4) 0 var(--space-6);
}

@media (max-width: 767px) {
  .project-hero {
    min-height: 60vh;
    padding-bottom: var(--space-12);
  }

  .project-hero .hero-title {
    font-size: var(--text-h2);
  }
}

/* ── Project Metadata Bar ────────────────────────────────────── */
.project-meta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-6);
  margin-bottom: var(--space-4);
}

.project-meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-body-sm);
  color: rgba(255, 255, 255, 0.80);
}

.project-meta-label {
  font-weight: 600;
  color: var(--color-accent-light);
  text-transform: uppercase;
  font-size: var(--text-caption);
  letter-spacing: 0.08em;
}

.project-meta-sep {
  color: rgba(255, 255, 255, 0.30);
  padding: 0 var(--space-2);
}

/* ── Project Overview (Challenge / Solution / Outcome) ──────── */
.project-overview-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
}

@media (min-width: 1024px) {
  .project-overview-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
  }
}

.project-overview-block {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  background: var(--color-secondary);
  box-shadow: var(--shadow-sm);
}

.project-overview-block--challenge { border-top: 3px solid #C05656; }
.project-overview-block--solution  { border-top: 3px solid var(--color-accent); }
.project-overview-block--outcome   { border-top: 3px solid var(--color-success); }

.project-overview-label {
  font-family: var(--font-body);
  font-size: var(--text-caption);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.project-overview-block--challenge .project-overview-label { color: #C05656; }
.project-overview-block--solution  .project-overview-label { color: var(--color-accent-hover); }
.project-overview-block--outcome   .project-overview-label { color: var(--color-success); }

.project-overview-text {
  font-size: var(--text-body);
  color: var(--color-text-secondary);
  line-height: 1.75;
  margin: 0;
}

/* ── Project Gallery: 2×2 Grid ───────────────────────────────── */
.project-gallery-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  margin-top: var(--space-12);
}

@media (min-width: 640px) {
  .project-gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }
}

/* ── Project Details Panel ───────────────────────────────────── */
.project-details-panel {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  border: 1px solid var(--color-border);
}

.project-details-title {
  font-family: var(--font-heading);
  font-size: var(--text-h3);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-8);
}

.project-details-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

@media (min-width: 640px) {
  .project-details-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .project-details-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.project-detail-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--color-border);
}

.project-detail-label {
  font-family: var(--font-body);
  font-size: var(--text-caption);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.project-detail-value {
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: 500;
  color: var(--color-text-primary);
}

/* Materials sub-list inside details */
.project-materials-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.project-materials-list li {
  font-size: var(--text-body-sm);
  color: var(--color-text-secondary);
  padding-left: var(--space-4);
  position: relative;
}

.project-materials-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 600;
}

/* ── Related Projects on Detail Page ─────────────────────────── */
.project-related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-top: var(--space-12);
}

@media (min-width: 640px) {
  .project-related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .project-related-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
  }
}

/* ── Responsive filter bar ───────────────────────────────────── */
@media (max-width: 767px) {
  .filter-bar {
    top: var(--navbar-height); /* token: 72px on mobile */
  }

  .filter-bar-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  .filter-group {
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .filter-select {
    width: 100%;
  }

  .filter-type-group {
    width: 100%;
  }

  .filter-clear-btn {
    margin-left: 0;
  }

  .projects-result-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  #loadMoreBtn {
    width: 100%;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .filter-bar {
    top: var(--navbar-height);
  }

  .filter-bar-inner {
    gap: var(--space-5);
  }
}