@font-face {
  font-family: "Clash Grotesk Variable";
  src:
    url("assets/fonts/ClashGrotesk-Variable.woff2") format("woff2"),
    url("assets/fonts/ClashGrotesk-Variable.woff") format("woff");
  font-weight: 400 700;
  font-display: swap;
}

/* ── Variables ──────────────────────────────────── */

:root {
  --color-light: #edf2f7;
  --color-dark: #020c13;
  --color-gray: #818f98;
  --color-gray-light: #c5d0d9;

  --font-family-heading: "Literata", Georgia, serif;
  --font-family-body: "Clash Grotesk Variable", "Helvetica", sans-serif;
  --font-weight-medium: 450;

  --font-size-base: 15px;
  --font-size-xs: 0.8rem;
  --font-size-sm: 0.9rem;
  --font-size-md: 1.1rem;
  --font-size-lg: 1.2rem;
  --font-size-xl: 1.3rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.75rem;

  --body-padding: clamp(1rem, 3vw, 2.5rem);

  --border-thick: 3px solid var(--color-gray);
  --border-thick-radius: 6px;
  --border-thin: 1px solid var(--color-gray);
}

/* ── Reset ──────────────────────────────────────── */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ── Body grid ──────────────────────────────────── */

body {
  font-family: var(--font-family-body);
  font-size: var(--font-size-base);
  color: var(--color-dark);
  background-color: var(--color-light);
  background-image: radial-gradient(
    var(--color-gray-light) 1px,
    transparent 1px
  );
  background-size: 20px 20px;
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: 0;
}

/* ── Hamburger (mobile only) ────────────────────── */

#hamburger {
  display: none;
  position: fixed;
  top: calc(var(--body-padding) * 0.5);
  left: calc(var(--body-padding) * 0.5);
  z-index: 200;
  background: var(--color-dark);
  color: var(--color-light);
  border: none;
  padding: 8px;
  cursor: pointer;
  line-height: 0;
}

/* ── Sidebar overlay (mobile) ───────────────────── */

#sidebarOverlay {
  display: none;
}

/* ── Sidebar ────────────────────────────────────── */

#sidebar {
  background: var(--color-light);
  padding: var(--body-padding);
  border-right: var(--border-thin);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 0;
  overflow-y: auto;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.logo {
  display: block;
  height: auto;
  width: auto;
  max-width: 4rem;
}

.logo-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.sidebar-close {
  display: none;
  background: none;
  border: none;
  color: var(--color-dark);
  cursor: pointer;
  padding: 4px;
  line-height: 0;
}

/* ── Bottom actions panel ───────────────────────── */

.sidebar-bottom-panel {
  margin-top: auto;
  border-top: var(--border-thin);
}

/* ── Module selector ────────────────────────────── */

.module-selector {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 1.5rem;
}

/* Custom select (non-native) */
.custom-select {
  position: relative;
  flex: 1;
}

.custom-select-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  font-family: var(--font-family-body);
  font-size: var(--font-size-sm);
  padding: 6px 8px;
  border: var(--border-thin);
  background: #fff;
  color: var(--color-dark);
  cursor: pointer;
  gap: 6px;
}

.custom-select-trigger svg {
  flex-shrink: 0;
  transition: transform 0.15s;
}

.custom-select.open .custom-select-trigger svg {
  transform: rotate(180deg);
}

.custom-select-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 100;
  background: #fff;
  border: var(--border-thin);
  border-top: none;
  flex-direction: column;
}

.custom-select.open .custom-select-dropdown {
  display: flex;
}

.custom-select-dropdown button {
  background: none;
  border: none;
  text-align: left;
  padding: 8px 10px;
  font-family: var(--font-family-body);
  font-size: var(--font-size-sm);
  color: var(--color-dark);
  cursor: pointer;
}

.custom-select-dropdown button:hover {
  background: var(--color-light);
}

.custom-select-dropdown button.active {
  font-weight: 600;
}

.module-menu-container {
  position: relative;
}

.kebab {
  background: none;
  border: none;
  color: var(--color-gray);
  cursor: pointer;
  padding: 4px;
  line-height: 0;
  display: flex;
  align-items: center;
}

.kebab:hover {
  color: var(--color-dark);
}

.module-menu {
  display: none;
  position: absolute;
  right: 0;
  top: 100%;
  z-index: 100;
  background: #fff;
  border: var(--border-thin);
  min-width: 160px;
  flex-direction: column;
}

.module-menu.open {
  display: flex;
}

.module-menu button {
  background: none;
  border: none;
  text-align: left;
  padding: 8px 12px;
  font-family: var(--font-family-body);
  font-size: var(--font-size-xs);
  color: var(--color-dark);
  cursor: pointer;
}

.module-menu button:hover {
  background: var(--color-light);
}

/* ── Sidebar sections ───────────────────────────── */

.sidebar-section-label {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-xs);
  color: var(--color-gray);
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
}

/* ── Form container ─────────────────────────────── */

.form-container {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-field label {
  font-family: var(--font-family-body);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-dark);
}

.form-field-input-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
}

.form-field input[type="color"] {
  width: 100%;
  height: 36px;
  padding: 2px;
  border: var(--border-thin);
  cursor: pointer;
  background: #fff;
}

.form-field input[type="number"],
.form-field input[type="text"] {
  width: 100%;
  padding: 6px 8px;
  border: var(--border-thin);
  font-family: var(--font-family-body);
  font-size: var(--font-size-sm);
  color: var(--color-dark);
  background: #fff;
}

.form-field select {
  width: 100%;
  padding: 6px 8px;
  border: var(--border-thin);
  font-family: var(--font-family-body);
  font-size: var(--font-size-sm);
  background: #fff;
  color: var(--color-dark);
}

.form-field input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.form-field-unit {
  font-size: var(--font-size-xs);
  color: var(--color-gray);
  white-space: nowrap;
}

/* ── Sidebar buttons ────────────────────────────── */

.sidebar-actions {
  display: flex;
  flex-direction: row;
  gap: 6px;
}

.sidebar-actions + .sidebar-actions {
  margin-top: 1rem;
}

.sidebar-actions .btn-primary,
.sidebar-actions .btn-secondary {
  flex: 1;
  min-width: 0;
}

.btn-primary,
.btn-secondary {
  font-family: var(--font-family-body);
  font-size: var(--font-size-sm);
  padding: 8px 12px;
  border: none;
  cursor: pointer;
  text-align: center;
}

.btn-primary {
  background: var(--color-dark);
  color: var(--color-light);
}

.btn-primary:hover {
  opacity: 0.85;
}

.btn-secondary {
  background: transparent;
  color: var(--color-dark);
  border: var(--border-thin);
}

.btn-secondary:hover {
  background: var(--color-gray-light);
}

/* ── Main content ───────────────────────────────── */

#mainContent {
  position: relative;
  padding: var(--body-padding);
  min-height: 100vh;
  transition: background 0.15s;
}

#mainContent.dragover {
  background: rgba(0, 0, 0, 0.04);
}

/* ── Upload area (text-only, no box) ───────────── */

.upload-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  gap: 0.5rem;
  cursor: pointer;
}

.upload-area h2 {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-dark);
}

.upload-area p {
  font-family: var(--font-family-body);
  font-size: var(--font-size-sm);
  color: var(--color-gray);
}

.upload-area .upload-link {
  color: var(--color-dark);
  text-decoration: underline;
  cursor: pointer;
}

.upload-area .upload-link:hover {
  opacity: 0.7;
}

/* ── Selection bar ──────────────────────────────── */

.selection-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.btn-text {
  background: none;
  border: none;
  font-family: var(--font-family-body);
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  cursor: pointer;
  padding: 4px 0;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.btn-text:hover {
  color: var(--color-dark);
}

.selection-count {
  font-size: var(--font-size-xs);
  color: var(--color-gray);
  margin-left: auto;
}

/* ── Photo grid ─────────────────────────────────── */

.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.photo-grid-cell {
  position: relative;
  background: #fff;
  border: var(--border-thin);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: border-color 0.15s;
  height: fit-content;
}

.photo-grid-cell.selected figcaption {
  background: var(--color-dark);
  color: var(--color-light);
}

.photo-grid-cell img {
  display: block;
  width: 100%;
  height: auto;
}

.photo-grid-cell figcaption {
  display: flex;
  justify-content: space-between;
  padding: 6px 8px;
  font-size: var(--font-size-xs);
  color: var(--color-gray);
  background: #fff;
  gap: 8px;
  transition:
    background 0.15s,
    color 0.15s;
}

.photo-grid-cell figcaption .caption-title {
  overflow: hidden;
  white-space: nowrap;
  -webkit-mask-image: linear-gradient(to right, black 80%, transparent 100%);
  mask-image: linear-gradient(to right, black 80%, transparent 100%);
  width: 100%;
}

.photo-grid-cell figcaption .caption-resolution {
  flex-shrink: 0;
  white-space: nowrap;
}

/* Expand button (appears on hover) */
.expand-btn {
  display: none;
  position: absolute;
  top: 6px;
  right: 6px;
  background: rgba(255, 255, 255, 0.9);
  border: var(--border-thin);
  color: var(--color-dark);
  cursor: pointer;
  padding: 4px;
  line-height: 0;
}

.photo-grid-cell:hover .expand-btn {
  display: block;
}

.expand-btn:hover {
  background: #fff;
}

/* ── Expanded view ──────────────────────────────── */

.expanded-view {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: absolute;
  inset: 0;
  background: var(--color-light);
  z-index: 50;
}

.expanded-view .expanded-image-wrap {
  cursor: zoom-in;
}

.expanded-view .expanded-image-wrap.zoomed {
  overflow: auto;
  cursor: default;
  display: block;
  align-items: unset;
  justify-content: unset;
}

.expanded-view .expanded-image-wrap.zoomed img {
  max-width: none;
  max-height: none;
  width: 200%;
  height: auto;
  object-fit: unset;
  cursor: zoom-out;
}

.expanded-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--color-dark);
  color: var(--color-light);
  border: none;
  cursor: pointer;
  padding: 8px;
  line-height: 0;
  border-radius: 0;
}

.expanded-close:hover {
  opacity: 0.7;
}

.expanded-image-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  overflow: hidden;
}

.expanded-image-wrap img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border: var(--border-thin);
}

.expanded-meta {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  padding: 0.5rem 0;
  flex-shrink: 0;
}

/* ── Responsive: mobile ─────────────────────────── */

@media (max-width: 768px) {
  body {
    grid-template-columns: 1fr;
  }

  #hamburger {
    display: block;
  }

  #sidebar {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 85vw;
    max-width: 320px;
    height: 100vh;
    z-index: 300;
    border-right: var(--border-thick);
    box-shadow: 4px 0 12px rgba(0, 0, 0, 0.1);
  }

  #sidebar.open {
    display: flex;
  }

  #sidebarOverlay.open {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 250;
  }

  .sidebar-close {
    display: block;
  }

  #mainContent {
    padding-top: calc(var(--body-padding) + 2rem);
  }

  .photo-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  }
}

/* ═══════════════════════════════════════════════════
   Group box (Pano Split)
   ═══════════════════════════════════════════════════ */

/* Group fieldset spans full grid width */

.photo-group {
  grid-column: 1 / -1;
  border: var(--border-thick);
  border-radius: var(--border-thick-radius);
  padding: 12px;
  background: rgba(255, 255, 255, 0.4);
  transition: border-color 0.15s;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.photo-group.selected {
  border-color: var(--color-dark);
}

/* Legend bar */

.group-legend {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 6px 10px;
  font-size: var(--font-size-xs);
  background: var(--color-dark);
  color: var(--color-light);
  border-radius: 2px;
  width: 100%;
  margin-bottom: 4px;
}

.group-legend-name {
  font-weight: 600;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  -webkit-mask-image: linear-gradient(to right, black 80%, transparent 100%);
  mask-image: linear-gradient(to right, black 80%, transparent 100%);
}

.group-legend-actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}

.group-action {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--color-light);
  font-family: var(--font-family-body);
  font-size: var(--font-size-xs);
  padding: 2px 6px;
  cursor: pointer;
  white-space: nowrap;
}

.group-action:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* Child cells inside a group */

.photo-grid-cell.in-group {
  cursor: default;
  border-color: var(--color-gray-light);
}

.photo-group.selected .photo-grid-cell.selected {
  border-color: var(--color-dark);
}

/* Copy button (appears on hover for group children) */

.copy-btn {
  display: none;
  position: absolute;
  top: 32px;
  right: 6px;
  background: rgba(255, 255, 255, 0.9);
  border: var(--border-thin);
  color: var(--color-dark);
  cursor: pointer;
  padding: 4px;
  line-height: 0;
}

.photo-grid-cell.in-group:hover .copy-btn {
  display: block;
}

.copy-btn:hover {
  background: #fff;
}

/* ── Create copies toggle in sidebar ────────────── */

.create-copies-row {
  padding: 0.75rem 0 0.5rem;
  margin-bottom: 0.75rem;
}

.create-copies-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-family-body);
  font-size: var(--font-size-sm);
  color: var(--color-dark);
  cursor: pointer;
}

.create-copies-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  cursor: pointer;
}

.create-copies-hint {
  font-size: var(--font-size-xs);
  color: var(--color-gray);
}