:root {
  --ink: #202124;
  --muted: #687076;
  --paper: #fbfaf6;
  --panel: #ffffff;
  --line: #d8d4c8;
  --line-strong: #222222;
  --accent: #ff6b5a;
  --accent-dark: #c43f34;
  --mint: #2fb99a;
  --gold: #eab84f;
  --shadow: 0 18px 50px rgba(32, 33, 36, 0.14);
}

* {
  box-sizing: border-box;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(135deg, rgba(164, 203, 251, 0.22), transparent 32%),
    linear-gradient(315deg, rgba(255, 107, 90, 0.13), transparent 36%),
    var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input {
  font: inherit;
}

button {
  border: 0;
}

.app-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  width: min(1000px, 100%);
  min-height: 100vh;
  padding: 16px;
  margin: 0 auto;
}

.workspace,
.gallery-panel {
  min-width: 0;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.workspace {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  overflow: hidden;
}

.topbar,
.gallery-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
}

.topbar {
  padding: 4px 16px;
  min-height: 40px;
  border-bottom: 1px solid var(--line);
}

.workspace-body {
  display: grid;
  grid-template-columns: auto 1fr;
  min-height: 0;
  overflow: hidden;
}

.color-sidebar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  width: 96px;
  padding: 16px 12px;
  background: rgba(251, 250, 246, 0.78);
  border-right: 1px solid var(--line);
}

.color-sidebar .picker-circle {
  position: relative;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: conic-gradient(red, yellow, green, cyan, blue, magenta, red);
  border: 2px solid #ffffff;
  outline: 1px solid rgba(32, 33, 36, 0.22);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: transform 0.15s ease, outline 0.15s ease;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.08);
}

.color-sidebar .picker-circle:hover {
  transform: scale(1.05);
}

.color-sidebar .picker-circle.active {
  outline: 3px solid var(--line-strong);
}

.color-sidebar .picker-circle input {
  position: absolute;
  top: -10px;
  left: -10px;
  width: 200%;
  height: 200%;
  opacity: 0;
  cursor: pointer;
}

.color-sidebar .swatches {
  display: grid;
  grid-template-columns: repeat(2, 32px);
  gap: 8px;
  justify-content: center;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: clamp(1.25rem, 2.2vw, 2rem);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  font-size: 1.05rem;
  line-height: 1.15;
  letter-spacing: 0;
}

.date-label {
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.artist-badge {
  margin-left: 8px;
  color: var(--mint);
  font-weight: 600;
  text-transform: none;
}

.artist-badge::before {
  content: "•";
  margin-right: 8px;
  color: var(--muted);
}

.finish-group,
.zoom-tools,
.picker-circle,
.swatches {
  display: flex;
  align-items: center;
  gap: 8px;
}

.zoom-tools .divider {
  width: 1px;
  height: 20px;
  background: var(--line);
  margin: 0 4px;
}

.finish-group {
  flex-wrap: wrap;
  justify-content: flex-end;
}


.primary-button {
  min-height: 38px;
  padding: 0 16px;
  color: #ffffff;
  background: var(--accent);
  border-radius: 8px;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 8px 20px rgba(196, 63, 52, 0.26);
}

.primary-button:hover {
  background: var(--accent-dark);
}

.primary-button:disabled {
  cursor: wait;
  opacity: 0.7;
}



.swatches {
  flex-wrap: wrap;
}

.swatch {
  width: 32px;
  height: 32px;
  border: 2px solid #ffffff;
  border-radius: 50%;
  outline: 1px solid rgba(32, 33, 36, 0.18);
  cursor: pointer;
}

.swatch.active {
  outline: 3px solid var(--line-strong);
}

.icon-button {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  font-weight: 850;
  cursor: pointer;
}

.icon-button:hover {
  border-color: var(--mint);
}



.zoom-value {
  min-width: 54px;
  text-align: center;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 800;
}

.canvas-frame {
  position: relative;
  min-height: 360px;
  overflow: hidden;
  touch-action: none;
  cursor: grab;
  background: var(--paper);
}

.canvas-frame.dragging {
  cursor: grabbing;
}

.canvas-surface {
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(78vmin, 820px);
  aspect-ratio: 1;
  transform-origin: center center;
  will-change: transform;
}

.canvas-surface canvas {
  display: block;
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 18px 26px rgba(32, 33, 36, 0.16));
  user-select: none;
  background: #ffffff;
}

.canvas-surface canvas {
  cursor: pointer;
}

.gallery-panel {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
  overflow: hidden;
}

.gallery-header {
  border-bottom: 1px solid var(--line);
}

.status-line {
  min-height: 40px;
  padding: 10px 16px;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  font-size: 0.9rem;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-content: start;
  gap: 10px;
  overflow: auto;
  padding: 12px;
}

.piece {
  min-width: 0;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.piece-preview {
  aspect-ratio: 1;
  background: #f7f2e8;
}

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

.piece-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  padding: 8px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 750;
}

.piece-name {
  overflow: hidden;
  color: var(--ink);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.hidden {
  display: none !important;
}

.gallery-title-area {
  display: flex;
  align-items: center;
  gap: 10px;
}

.gallery-title-area .icon-button {
  width: 32px;
  height: 32px;
  font-size: 0.9rem;
  border-radius: 6px;
}

.piece-group {
  min-width: 0;
  overflow: visible;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
  outline: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
}

.piece-group:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.08);
}

.piece-stack {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  background: #f7f2e8;
  overflow: visible;
  border-radius: 8px 8px 0 0;
  box-sizing: border-box;
}

.piece-card {
  position: absolute;
  top: 10px;
  left: 10px;
  width: calc(100% - 20px);
  height: calc(100% - 20px);
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.06);
  transition: transform 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  overflow: hidden;
}

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

.piece-card.card-0 {
  transform: translate(6px, 4px) rotate(4deg);
  z-index: 1;
}

.piece-card.card-1 {
  transform: translate(-5px, 2px) rotate(-3deg);
  z-index: 2;
}

.piece-card.card-2 {
  transform: translate(0, 0) rotate(0deg);
  z-index: 3;
}

.piece-group:hover .piece-card.card-0 {
  transform: translate(12px, 8px) rotate(7deg);
}

.piece-group:hover .piece-card.card-1 {
  transform: translate(-10px, 4px) rotate(-5deg);
}

.piece-group:hover .piece-card.card-2 {
  transform: translate(0, -3px) scale(1.01);
}

.piece-count {
  font-size: 0.68rem;
  font-weight: 800;
  color: var(--muted);
  background: rgba(32, 33, 36, 0.06);
  padding: 1px 5px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.piece-preview {
  position: relative;
  overflow: hidden;
}

.save-overlay-btn {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(240, 240, 240, 0.92);
  backdrop-filter: blur(4px);
  color: #202124;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
  z-index: 10;
  border: 1px solid rgba(0, 0, 0, 0.08);
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.save-overlay-btn:hover {
  background: var(--mint);
  color: #ffffff;
  transform: scale(1.05);
}

/* Modal Backdrop Overlay */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(32, 33, 36, 0.48);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.modal-backdrop.show {
  opacity: 1;
  pointer-events: auto;
}

/* Gallery Panel inside Modal */
.modal-backdrop .gallery-panel {
  width: min(640px, 94%);
  max-height: 85vh;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.22);
  display: grid;
  grid-template-rows: auto auto 1fr;
  overflow: hidden;
  transform: translateY(20px) scale(0.97);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-backdrop.show .gallery-panel {
  transform: translateY(0) scale(1);
}

.gallery-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.secondary-button {
  min-height: 38px;
  padding: 0 16px;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
  transition: background-color 0.2s, border-color 0.2s;
}

.secondary-button:hover {
  background: rgba(32, 33, 36, 0.04);
}

@media (max-width: 620px) {
  .app-shell {
    padding: 8px;
  }

  .topbar {
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 10px;
  }

  .topbar > * {
    width: 100%;
    justify-content: center;
  }

  .finish-group {
    justify-content: center;
    width: 100%;
  }

  .finish-group > * {
    flex: 1 1 auto;
  }

  .workspace-body {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
  }

  .color-sidebar {
    flex-direction: row;
    width: 100%;
    padding: 8px;
    gap: 12px;
    border-right: none;
    border-bottom: 1px solid var(--line);
    justify-content: center;
    flex-wrap: wrap;
  }

  .zoom-tools #zoomOut,
  .zoom-tools #zoomIn,
  .zoom-tools .zoom-value,
  .zoom-tools .divider {
    display: none !important;
  }

  .color-sidebar .picker-circle {
    margin: 0;
  }

  .color-sidebar .swatches {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
  }

  .canvas-surface {
    width: min(92vmin, 760px);
  }

  .gallery-grid {
    grid-template-columns: 1fr;
  }
}