/* ==========================================================================
   GALLERY WALL — VARIABLES
   ========================================================================== */
:root {
  --wall: #f7f5f0;
  --wall-warm: #ede9e0;
  --frame-dark: #2c2420;
  --frame-oak: #5c4a3a;
  --mat: #fdfcfa;
  --mat-shadow: #e8e4dc;
  --label-bg: #f0ece5;
  --text: #2c2420;
  --text-secondary: #6b5e52;
  --text-muted: #9c8e80;
  --accent: #8b7355;

  --frame-border: 10px;
  --mat-padding: 22px;
  --frame-radius: 3px;
  --shadow-frame:
    0 8px 24px rgba(44, 36, 32, 0.18),
    0 2px 6px rgba(44, 36, 32, 0.1);
  --shadow-frame-hover:
    0 20px 50px rgba(44, 36, 32, 0.25),
    0 6px 16px rgba(44, 36, 32, 0.15);
  --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ==========================================================================
   RESET & BASE
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: "Georgia", "Times New Roman", serif;
  background-color: var(--wall);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  /* Subtle plaster texture via gradient noise */
  background-image:
    radial-gradient(ellipse at 15% 20%, rgba(180, 160, 130, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 85% 75%, rgba(160, 140, 110, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(200, 185, 160, 0.04) 0%, transparent 70%);
}

a {
  text-decoration: none;
  color: inherit;
}

/* ==========================================================================
   HEADER — Gallery signage
   ========================================================================== */
.gallery-header {
  text-align: center;
  padding: 4.5rem 1.5rem 1.5rem;
  position: relative;
}

.gallery-title {
  font-family: "Georgia", serif;
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text);
  line-height: 1;
}

.gallery-subtitle {
  margin-top: 0.75rem;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* Thin ruled line below header */
.gallery-header::after {
  content: "";
  display: block;
  width: 60px;
  height: 1px;
  background: var(--accent);
  margin: 2rem auto 0;
  opacity: 0.6;
}

/* ==========================================================================
   GALLERY WALL — Grid System
   ========================================================================== */
.gallery-wall {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2.5rem;
  max-width: 1180px;
  margin: 0 auto;
  padding: 2.5rem 2rem 6rem;
  align-items: start;
}

/* ==========================================================================
   GALLERY PIECE — Organic sizing via grid spans
   ========================================================================== */
.gallery-piece {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

/* Each tile owns its height, so labels cannot overlap the next row. */
.piece-portrait {
  grid-column: span 1;
}

.piece-landscape {
  grid-column: span 2;
}

.piece-square {
  grid-column: span 1;
}

.piece-mini {
  grid-column: span 1;
}

.piece-wide {
  grid-column: span 2;
}

/* ==========================================================================
   FRAME — The physical picture frame
   ========================================================================== */
.frame {
  display: block;
  position: relative;
  width: 100%;
  background-color: var(--mat);
  border: var(--frame-border) solid var(--frame-oak);
  border-radius: var(--frame-radius);
  box-shadow: var(--shadow-frame);
  overflow: hidden;
  transition:
    box-shadow var(--transition),
    transform var(--transition);
}

.piece-landscape .frame,
.piece-wide .frame {
  aspect-ratio: 16 / 9;
}

.piece-square .frame {
  aspect-ratio: 1;
}

.piece-mini .frame {
  aspect-ratio: 4 / 5;
}

.piece-portrait .frame {
  aspect-ratio: 3 / 4;
}

.frame:hover {
  box-shadow: var(--shadow-frame-hover);
  transform: translateY(-6px) scale(1.01);
  z-index: 10;
}

/* Matting inner glow */
.frame::before {
  content: "";
  position: absolute;
  inset: 0;
  border: var(--mat-padding) solid var(--mat);
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.06);
  pointer-events: none;
  z-index: 2;
}

/* ==========================================================================
   FRAME INNER — Contains the artwork
   ========================================================================== */
.frame-inner {
  display: block;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  position: relative;
}

.frame-inner img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* Lazy-load fade-in for images */
.lazy-img {
  opacity: 0;
  transition: opacity 0.6s ease;
}

.lazy-img.loaded {
  opacity: 1;
}

/* Lazy-bg state for frame background fallback */
.lazy-bg:not(.loaded) {
  background-color: var(--mat-shadow) !important;
}

.lazy-bg.loaded {
  background-color: var(--mat) !important;
}

/* ==========================================================================
   MUSEUM LABEL — Display plaque
   ========================================================================== */
.museum-label {
  display: block;
  width: calc(100% - 8px);
  margin-top: 14px;
  padding: 12px 16px;
  background-color: var(--label-bg);
  border: 1px solid var(--mat-shadow);
  border-radius: 2px;
  text-align: center;
  transition: background-color var(--transition);
}

.gallery-piece:hover .museum-label {
  background-color: #e8e2d8;
}

.label-tag {
  display: inline-block;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.label-title {
  font-family: "Georgia", serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  letter-spacing: 0.02em;
}

.label-desc {
  margin-top: 3px;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 400;
  line-height: 1.4;
}

/* ==========================================================================
   NO-IMAGE FALLBACK
   ========================================================================== */
.no-image-fallback {
  background-color: var(--mat-shadow) !important;
  border-color: var(--text-muted) !important;
}

.no-image-fallback::before {
  display: none;
}

.no-image-fallback .frame-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
  padding: 1.5rem;
}

.no-image-fallback .frame-inner::after {
  content: "Coming Soon";
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.no-image-fallback:hover {
  transform: translateY(-3px);
}

/* ========================================================================== 
   RESPONSIVE — Tablet
   ========================================================================== */
@media (max-width: 1000px) {
  .gallery-wall {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2rem 1.5rem;
    padding: 2rem 1.5rem 4rem;
  }

}

/* ==========================================================================
   RESPONSIVE — Mobile
   ========================================================================== */
@media (max-width: 640px) {
  .gallery-header {
    padding: 3rem 1rem 1rem;
  }

  .gallery-title {
    font-size: 2rem;
    letter-spacing: 0.08em;
  }

  .gallery-subtitle {
    font-size: 0.75rem;
  }

  .gallery-wall {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 1.5rem 1rem 4rem;
  }

  /* One column gives every card a clear reading order on phones. */
  .piece-landscape,
  .piece-portrait,
  .piece-square,
  .piece-mini,
  .piece-wide {
    grid-column: 1 / -1;
  }

  .frame {
    --frame-border: 7px;
    --mat-padding: 14px;
  }

  .museum-label {
    padding: 10px 12px;
    width: calc(100% - 4px);
  }

  .label-title {
    font-size: 0.9rem;
  }

  .label-desc {
    font-size: 0.7rem;
  }
}

/* ==========================================================================
   HEADER CONTROLS — Sign in / Sign out / Edit
   ========================================================================== */
.header-controls {
  position: fixed;
  top: 1.5rem;
  right: 2rem;
  z-index: 50;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 12px;
}

.user-email {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.header-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--mat-shadow);
  border-radius: 2px;
  cursor: pointer;
  text-decoration: none;
  transition: color 0.3s, border-color 0.3s, background-color 0.3s;
}

.header-btn:hover {
  color: var(--text);
  border-color: var(--accent);
}

.header-btn.active {
  color: var(--mat);
  background: var(--frame-dark);
  border-color: var(--frame-dark);
}

/* ==========================================================================
   LOCK ICON — Overlay on restricted cards
   ========================================================================== */
.gallery-piece {
  position: relative;
}

.lock-icon {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: rgba(44, 36, 32, 0.75);
  border-radius: 50%;
  color: var(--mat);
  pointer-events: none;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  transition: opacity 0.3s;
}

.gallery-piece:hover .lock-icon {
  opacity: 0.9;
}

/* ==========================================================================
   INVITE BANNER
   ========================================================================== */
.invite-banner {
  text-align: center;
  padding: 0.75rem 1.5rem;
  background: var(--label-bg);
  border-bottom: 1px solid var(--mat-shadow);
}

.invite-banner p {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.75rem;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

/* ==========================================================================
   LOGIN MODAL
   ========================================================================== */
.login-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(44, 36, 32, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  animation: fadeIn 0.25s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.login-modal {
  position: relative;
  width: 100%;
  max-width: 400px;
  margin: 1rem;
  padding: 2rem 2rem 1.5rem;
  background: var(--mat);
  border: var(--frame-border) solid var(--frame-dark);
  border-image: linear-gradient(180deg, #3d3229 0%, #5c4a3a 20%, #4a3c30 40%, #6b5844 60%, #4a3c30 80%, #3d3229 100%) 10;
  box-shadow: var(--shadow-frame-hover);
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.login-modal-close {
  position: absolute;
  top: 12px;
  right: 14px;
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
  padding: 4px;
  transition: color 0.3s;
}

.login-modal-close:hover {
  color: var(--text);
}

.login-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--mat-shadow);
}

.login-tab {
  flex: 1;
  padding: 8px 0;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color 0.3s, border-color 0.3s;
}

.login-tab:hover {
  color: var(--text-secondary);
}

.login-tab.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

.login-form label {
  display: block;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 5px;
}

.login-form input[type="email"],
.login-form input[type="password"] {
  width: 100%;
  padding: 9px 12px;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.85rem;
  border: 1px solid var(--mat-shadow);
  background: var(--wall);
  color: var(--text);
  border-radius: 2px;
  margin-bottom: 1rem;
  outline: none;
  transition: border-color 0.3s;
}

.login-form input:focus {
  border-color: var(--accent);
}

.login-form button[type="submit"] {
  display: block;
  width: 100%;
  padding: 10px 20px;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  background: var(--frame-dark);
  color: var(--mat);
  border: none;
  cursor: pointer;
  transition: background-color 0.3s;
  margin-top: 0.5rem;
}

.login-form button[type="submit"]:hover {
  background: var(--accent);
}

.login-error {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.75rem;
  color: #8b4513;
  text-align: center;
  margin-bottom: 0.75rem;
  min-height: 1.1em;
}

/* ==========================================================================
   EDIT MODE — Drag handles, aspect selectors, dashed borders
   ========================================================================== */
.gallery-wall.edit-mode .gallery-piece {
  cursor: grab;
  position: relative;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}

/* Cards are rearranged in edit mode, never followed as links. */
.gallery-wall.edit-mode .frame {
  pointer-events: none;
}

.gallery-wall.edit-mode .gallery-piece::before {
  content: "";
  position: absolute;
  inset: -3px;
  border: 2px dashed var(--accent);
  border-radius: var(--frame-radius);
  opacity: 0.5;
  pointer-events: none;
  z-index: 3;
}

.gallery-wall.edit-mode .gallery-piece.dragging {
  opacity: 0.4;
  cursor: grabbing;
}

.gallery-wall.edit-mode .gallery-piece.drag-over {
  opacity: 0.7;
}

.gallery-wall.edit-mode .gallery-piece.drag-over::before {
  border-color: var(--frame-dark);
  opacity: 1;
  border-width: 3px;
}

.aspect-select {
  position: absolute;
  bottom: 42px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 6;
}

.aspect-dropdown {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text);
  background: var(--mat);
  border: 1px solid var(--accent);
  padding: 4px 8px;
  border-radius: 2px;
  cursor: pointer;
  outline: none;
  appearance: auto;
  -webkit-appearance: auto;
}

.aspect-dropdown:focus {
  border-color: var(--frame-dark);
}

/* ==========================================================================
   SAVE BAR — Bottom bar during edit mode
   ========================================================================== */
.save-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  justify-content: center;
  gap: 12px;
  padding: 14px 2rem;
  background: var(--frame-dark);
  box-shadow: 0 -4px 20px rgba(44, 36, 32, 0.2);
  animation: slideUpBar 0.3s ease;
}

@keyframes slideUpBar {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

.save-btn {
  padding: 8px 24px;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: background-color 0.3s, opacity 0.3s;
}

.save-btn:first-child {
  background: var(--accent);
  color: var(--mat);
}

.save-btn:first-child:hover {
  background: #a08a6a;
}

.save-btn-cancel {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid rgba(255,255,255,0.2);
}

.save-btn-cancel:hover {
  color: var(--mat);
  border-color: rgba(255,255,255,0.4);
}

/* ==========================================================================
   RESPONSIVE — Header controls on tablet/mobile
   ========================================================================== */
@media (max-width: 640px) {
  .header-controls {
    top: 0.75rem;
    right: 1rem;
  }

  .header-btn {
    font-size: 0.6rem;
    padding: 5px 10px;
  }

  .lock-icon {
    width: 26px;
    height: 26px;
  }

  .lock-icon svg {
    width: 14px;
    height: 14px;
  }

  .login-modal {
    padding: 1.5rem;
    margin: 1rem;
  }

  .save-bar {
    padding: 12px 1rem;
  }
}