/* ============================================================
   Reset & base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }

:root {
  --bg: #fafaf9;
  --surface: #ffffff;
  --border: #e5e5e2;
  --text: #1a1a18;
  --muted: #767672;
  --accent: #2d5a27;
  --accent-light: #e8f0e7;
  --danger: #c0392b;
  --radius: 6px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 40px rgba(0,0,0,.18);
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-w: 1100px;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

img { display: block; max-width: 100%; }
button { cursor: pointer; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ============================================================
   Site header (gallery)
   ============================================================ */
.site-header {
  padding: 3rem 2rem 2rem;
  max-width: var(--max-w);
  margin: 0 auto;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.5rem;
}

.site-header h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.site-tagline {
  margin-top: 0.4rem;
  color: var(--muted);
  font-size: 1rem;
}

/* ============================================================
   Gallery
   ============================================================ */
#gallery {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem 4rem;
}

.loading, .empty {
  color: var(--muted);
  padding: 2rem 0;
}

.project-section {
  margin-bottom: 0;
  border-bottom: 1px solid var(--border);
}

.project-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 0;
  cursor: pointer;
  user-select: none;
}

.project-title-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.project-header h2 {
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.project-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.project-chevron {
  font-size: 0.7rem;
  color: var(--muted);
  transition: transform .2s;
}

.project-section.open .project-chevron { transform: rotate(180deg); }

.project-body {
  display: none;
  padding-bottom: 1.75rem;
}

.project-section.open .project-body { display: block; }

.project-desc {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.status-badge {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  border: 1px solid;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.photo-count {
  font-size: 0.8rem;
  color: var(--muted);
}

/* ---- Carousel ---- */
.carousel {
  position: relative;
}

.carousel-track {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding-bottom: 2px; /* prevent clip on focus ring */
}

.carousel-track::-webkit-scrollbar { display: none; }

.carousel-item {
  flex: 0 0 220px;
  height: 220px;
  scroll-snap-align: start;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--border);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: opacity .15s;
}

.carousel-item:hover { opacity: 0.88; }

.carousel-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
  display: block;
}

.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  background: rgba(0,0,0,.45);
  border: none;
  border-radius: 50%;
  width: 2.4rem;
  height: 2.4rem;
  font-size: 1.5rem;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background .15s, opacity .15s;
  line-height: 1;
}

.carousel-arrow:hover:not(:disabled) { background: rgba(0,0,0,.68); }
.carousel-arrow:disabled {
  opacity: 0.2;
  cursor: default;
}
.carousel-arrow-left  { left: 0.5rem; }
.carousel-arrow-right { right: 0.5rem; }

@media (max-width: 600px) {
  .carousel-item { flex: 0 0 160px; height: 160px; }
}

.no-photos {
  color: var(--muted);
  font-size: 0.9rem;
}

/* ============================================================
   Lightbox
   ============================================================ */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.92);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.lightbox[hidden] { display: none; }

.lightbox-figure {
  max-width: min(90vw, 1000px);
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.lightbox-figure img {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--radius);
}

.lightbox-figure figcaption {
  color: rgba(255,255,255,.7);
  font-size: 0.9rem;
  text-align: center;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: fixed;
  background: rgba(255,255,255,.12);
  border: none;
  color: #fff;
  font-size: 1.5rem;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .15s;
  z-index: 1001;
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover { background: rgba(255,255,255,.25); }

.lightbox-close { top: 1.25rem; right: 1.25rem; font-size: 1.4rem; }
.lightbox-prev  { left: 1.25rem; top: 50%; transform: translateY(-50%); font-size: 2rem; }
.lightbox-next  { right: 1.25rem; top: 50%; transform: translateY(-50%); font-size: 2rem; }

/* ============================================================
   Admin page
   ============================================================ */
.admin-body {
  background: var(--bg);
}

.admin-nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0.9rem 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.admin-nav h1 {
  font-size: 1.05rem;
  font-weight: 600;
}

.admin-nav .nav-right {
  margin-left: auto;
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.admin-main {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem;
}

/* ---- Login screen ---- */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 2.5rem;
  width: 100%;
  max-width: 360px;
  box-shadow: var(--shadow-lg);
}

.login-card h2 {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
}

/* ---- Form elements ---- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 1rem;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .04em;
}

.form-group input,
.form-group textarea,
.form-group select {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.6rem 0.75rem;
  font-size: 0.95rem;
  background: var(--surface);
  color: var(--text);
  transition: border-color .15s;
  width: 100%;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group textarea { resize: vertical; min-height: 70px; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: none;
  border-radius: var(--radius);
  padding: 0.55rem 1.1rem;
  font-size: 0.9rem;
  font-weight: 500;
  transition: opacity .15s, background .15s;
  text-decoration: none;
  cursor: pointer;
}

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover:not(:disabled) { opacity: 0.85; }

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover:not(:disabled) { background: var(--bg); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover:not(:disabled) { opacity: 0.85; }

.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.82rem; }

/* ---- Sections ---- */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  gap: 1rem;
}

.section-header h2 { font-size: 1.1rem; font-weight: 600; }

/* ---- Project cards ---- */
.projects-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.project-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9rem 1.1rem;
  cursor: pointer;
  user-select: none;
}

.project-drag-handle {
  color: var(--muted);
  cursor: grab;
  font-size: 1rem;
  flex-shrink: 0;
  padding: 0 2px;
}

.project-card.dragging { opacity: 0.4; }
.project-card.drag-over { outline: 2px dashed var(--accent); outline-offset: 2px; border-radius: 8px; }

.project-card-header h3 {
  font-size: 1rem;
  font-weight: 600;
  flex: 1;
}

.project-card-header .count {
  font-size: 0.8rem;
  color: var(--muted);
}

.chevron {
  font-size: 0.75rem;
  color: var(--muted);
  transition: transform .2s;
}

.project-card.open .chevron { transform: rotate(180deg); }

.project-card-body {
  display: none;
  padding: 0 1.1rem 1.1rem;
  border-top: 1px solid var(--border);
}

.project-card.open .project-card-body { display: block; }

/* ---- Upload zone ---- */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  margin-top: 1rem;
  transition: border-color .15s, background .15s;
  cursor: pointer;
}

.drop-zone.dragging {
  border-color: var(--accent);
  background: var(--accent-light);
}

.drop-zone p { color: var(--muted); font-size: 0.9rem; margin-top: 0.5rem; }

.drop-zone input[type="file"] {
  display: none;
}

/* ---- Admin photo grid ---- */
.admin-photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 8px;
  margin-top: 1rem;
}

.admin-photo-item {
  position: relative;
  border-radius: var(--radius);
  overflow: visible;
  background: var(--border);
  aspect-ratio: 1;
}

.admin-photo-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.admin-photo-item .photo-actions {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.45);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  opacity: 0;
  transition: opacity .15s;
}

.admin-photo-item:hover .photo-actions { opacity: 1; }

.drag-handle {
  position: absolute;
  top: 4px;
  left: 4px;
  background: rgba(0,0,0,.5);
  color: #fff;
  border-radius: 4px;
  padding: 2px 4px;
  font-size: 0.85rem;
  cursor: grab;
  line-height: 1;
  z-index: 2;
  opacity: 0;
  transition: opacity .15s;
}

.admin-photo-item:hover .drag-handle { opacity: 1; }
.admin-photo-item.dragging { opacity: 0.4; }
.admin-photo-item.drag-over .thumb { outline: 2px dashed var(--accent); outline-offset: 2px; }

.photo-caption-label {
  font-size: 0.75rem;
  color: var(--muted);
  padding: 3px 2px 0;
  line-height: 1.3;
  min-height: 1em;
  word-break: break-word;
}

/* ---- Upload progress ---- */
.upload-progress {
  margin-top: 0.75rem;
}

.progress-bar-wrap {
  background: var(--border);
  border-radius: 999px;
  height: 6px;
  overflow: hidden;
  margin-bottom: 0.4rem;
}

.progress-bar {
  background: var(--accent);
  height: 100%;
  transition: width .2s;
}

/* ---- New project form ---- */
.new-project-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 2rem;
  display: none;
}

.new-project-form.visible { display: block; }

/* ---- Alerts ---- */
.alert {
  padding: 0.7rem 1rem;
  border-radius: var(--radius);
  font-size: 0.88rem;
  margin-bottom: 1rem;
}

.alert-error { background: #fdecea; color: #8b1a1a; border: 1px solid #f5c6c6; }
.alert-success { background: var(--accent-light); color: #1a4017; border: 1px solid #b8d9b5; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 600px) {
  .site-header { padding: 2rem 1rem 1.5rem; }
  #gallery { padding: 0 1rem 3rem; }
  .admin-main { padding: 1rem; }
}