:root {
  --bg-top: #fff4e0;
  --bg-bottom: #ffd7a8;
  --panel: rgba(255, 251, 244, 0.78);
  --panel-strong: rgba(255, 248, 238, 0.92);
  --line: rgba(56, 40, 24, 0.14);
  --text: #2c1a0f;
  --accent: #f26b1d;
  --accent-strong: #cf4f08;
  --danger: #b9382a;
  --shadow: 0 16px 36px rgba(98, 54, 26, 0.18);
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
}

body {
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  color: var(--text);
  overflow-x: hidden;
  background:
    radial-gradient(circle at 15% 10%, rgba(255, 255, 255, 0.8), transparent 40%),
    radial-gradient(circle at 85% 0%, rgba(242, 107, 29, 0.2), transparent 32%),
    linear-gradient(160deg, var(--bg-top), var(--bg-bottom));
}

.app-shell {
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 12px;
  min-height: 100%;
  padding: 14px;
}

.toolbar {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 10px;
  max-width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
}

.toolbar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 0 4px;
}

.toolbar-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
}

.toolbar-content {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: flex-start;
}

.toolbar-main {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

.toolbar.collapsed .toolbar-content {
  display: none;
}

.minimize-button {
  width: 28px;
  height: 28px;
  padding: 0;
  border: 1px solid var(--line);
  background: var(--panel-strong);
  color: var(--text);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1.2rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  transition: transform 120ms ease, background-color 120ms ease;
}

.minimize-button:hover {
  transform: scale(1.05);
  background: rgba(242, 107, 29, 0.1);
}

.group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  min-width: 0;
}

.tool-cluster {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 6px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel-strong);
}

.tool-cluster-label {
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(44, 26, 15, 0.72);
}

.slider-cluster {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 4px 6px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel-strong);
}

.slider-cluster .inline-control {
  margin: 0;
}

.brush-group {
  flex: 1 1 100%;
}

.inline-control {
  display: flex;
  align-items: center;
  gap: 7px;
  min-width: 0;
  padding: 5px 8px;
  border-radius: 10px;
  background: var(--panel-strong);
  border: 1px solid var(--line);
  font-size: 0.9rem;
}

.inline-control span {
  white-space: nowrap;
}

.tool-select {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fffdf8;
  color: var(--text);
  font-family: inherit;
  font-size: 0.86rem;
  padding: 4px 6px;
}

.inline-control input[type="range"] {
  min-width: 86px;
  width: clamp(86px, 10vw, 130px);
  accent-color: var(--accent-strong);
}

.inline-control output {
  width: 42px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.color-history {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 8px;
  padding: 4px 0;
}

.color-swatch {
  width: 24px;
  height: 24px;
  border: 2px solid var(--line);
  border-radius: 4px;
  cursor: default;
  padding: 0;
  transition: transform 0.1s, border-color 0.1s;
}

.color-swatch:hover {
  transform: scale(1.15);
  border-color: var(--accent-strong);
}

.color-swatch:active {
  transform: scale(1.05);
}

.tool-button {
  border: 1px solid var(--line);
  background: var(--panel-strong);
  color: var(--text);
  padding: 8px 11px;
  border-radius: 10px;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: default;
  white-space: nowrap;
  transition: transform 120ms ease, background-color 120ms ease, border-color 120ms ease;
}

.tool-button:hover {
  transform: translateY(-1px);
  border-color: rgba(56, 40, 24, 0.3);
}

.tool-button.active {
  background: rgba(242, 107, 29, 0.15);
  border-color: rgba(242, 107, 29, 0.5);
}

.tool-button.primary {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
}

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

.tool-button.danger {
  color: var(--danger);
}

.hidden {
  display: none !important;
}

.brush-modal {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
}

.brush-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(44, 26, 15, 0.35);
}

.brush-modal-panel {
  position: relative;
  z-index: 1;
  width: min(92vw, 760px);
  max-height: 86vh;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel-strong);
  box-shadow: var(--shadow);
  padding: 12px;
}

.brush-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.brush-modal-header h2 {
  margin: 0;
  font-size: 1.05rem;
}

.brush-modal-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(240px, 1fr));
  gap: 8px;
}

.brush-modal-grid .inline-control {
  width: 100%;
}

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

#color-picker {
  width: 38px;
  height: 28px;
  border: none;
  background: none;
  padding: 0;
  cursor: default;
}

.canvas-stage {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-start;
  border-radius: 16px;
  border: 1px solid var(--line);
  background:
    repeating-linear-gradient(
      45deg,
      rgba(44, 26, 15, 0.04),
      rgba(44, 26, 15, 0.04) 12px,
      rgba(255, 255, 255, 0.45) 12px,
      rgba(255, 255, 255, 0.45) 24px
    );
  box-shadow: var(--shadow);
  overflow: auto;
  min-height: 360px;
  cursor: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='6' height='6' viewBox='0 0 6 6'%3E%3Ccircle cx='3' cy='3' r='1.4' fill='%23000000'/%3E%3C/svg%3E") 3 3, auto;
}

.canvas-stage.panning {
  cursor: grabbing;
}

.canvas-viewport {
  position: relative;
  transform-origin: top left;
  will-change: transform;
}

#paint-canvas {
  display: block;
  width: min(100%, 1600px);
  height: auto;
  background: #ffffff;
  margin: 0 auto;
  touch-action: none;
  cursor: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='6' height='6' viewBox='0 0 6 6'%3E%3Ccircle cx='3' cy='3' r='1.4' fill='%23000000'/%3E%3C/svg%3E") 3 3, auto;
}

#guide-canvas {
  position: absolute;
  inset: 0;
  width: min(100%, 1600px);
  height: auto;
  margin: 0 auto;
  pointer-events: none;
}

.layer-panel {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 30;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  width: min(88vw, 280px);
  max-height: calc(100vh - 20px);
  overflow: hidden;
}

.layer-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px;
  border-bottom: 1px solid var(--line);
}

.layer-panel-content {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow: hidden;
}

.layer-panel.collapsed .layer-panel-content {
  display: none;
}

.layer-controls {
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-bottom: 1px solid var(--line);
}

.layer-panel-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.layer-control-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 8px;
  background: var(--panel-strong);
  border: 1px solid var(--line);
  font-size: 0.85rem;
}

.layer-control-item span {
  font-weight: 600;
  min-width: 52px;
}

.layer-control-item .tool-select {
  flex: 1;
  font-size: 0.82rem;
}

.layer-control-item input[type="range"] {
  flex: 1;
  accent-color: var(--accent-strong);
}

.layer-control-item output {
  min-width: 38px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-size: 0.82rem;
}

.layer-button-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.tool-button.compact {
  padding: 7px 8px;
  font-size: 0.82rem;
  font-weight: 600;
}

.tool-button.icon-button {
  font-size: 1.4rem;
  padding: 8px 12px;
  line-height: 1;
}

.tool-button.full-width {
  width: 100%;
}

.layer-thumbnails {
  flex: 1;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow: auto;
}

.tools-panel {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 30;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  width: min(88vw, 280px);
  max-height: calc(100vh - 20px);
  overflow: hidden;
}

.tools-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px;
  border-bottom: 1px solid var(--line);
}

.tools-panel-title {
  font-size: 1rem;
  font-weight: 600;
  margin: 0;
}

.tools-panel-content {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow: auto;
}

.tools-panel.collapsed .tools-panel-content {
  display: none;
}

.tools-controls {
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.layer-thumb {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 8px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-strong);
  padding: 6px;
  cursor: default;
  min-width: 0;
}

.layer-thumb.active {
  border-color: rgba(242, 107, 29, 0.65);
  box-shadow: inset 0 0 0 1px rgba(242, 107, 29, 0.35);
}

.layer-thumb.dragging {
  opacity: 0.6;
}

.layer-thumb.drag-over {
  border-color: rgba(242, 107, 29, 0.85);
  box-shadow: 0 0 0 2px rgba(242, 107, 29, 0.35);
}

.layer-thumb canvas {
  width: 52px;
  height: 36px;
  border-radius: 4px;
  border: 1px solid var(--line);
  background:
    linear-gradient(45deg, rgba(0, 0, 0, 0.06) 25%, transparent 25%, transparent 75%, rgba(0, 0, 0, 0.06) 75%),
    linear-gradient(45deg, rgba(0, 0, 0, 0.06) 25%, transparent 25%, transparent 75%, rgba(0, 0, 0, 0.06) 75%);
  background-position: 0 0, 6px 6px;
  background-size: 12px 12px;
}

.layer-thumb-label {
  font-size: 0.8rem;
  line-height: 1.2;
}

.layer-clip-group {
  padding: 8px;
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(242, 107, 29, 0.12) 0%, rgba(242, 107, 29, 0.06) 100%);
  border: 2px solid rgba(242, 107, 29, 0.3);
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
}

.layer-clip-group::before {
  content: "Clipping Group";
  position: absolute;
  top: -10px;
  left: 12px;
  background: var(--panel);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 600;
  color: rgba(242, 107, 29, 0.9);
  border: 1px solid rgba(242, 107, 29, 0.3);
}

.layer-clip-group .layer-thumb {
  margin: 0;
}

.layer-clip-group .clip-base {
  opacity: 0.95;
}

.layer-thumb.clipped {
  margin-left: 12px;
  padding-left: 12px;
  border-left: 3px solid rgba(242, 107, 29, 0.6);
  position: relative;
}

.layer-thumb.clipped::before {
  content: "↳";
  position: absolute;
  left: -14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1rem;
  color: rgba(242, 107, 29, 0.9);
  font-weight: bold;
}

.status-bar {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px 12px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.status-bar p {
  margin: 0;
  font-size: 0.9rem;
}

@media (max-width: 960px) {
  .toolbar {
    padding: 8px;
    gap: 8px;
  }

  .toolbar-content {
    grid-template-columns: 1fr;
  }

  .view-options {
    border-left: none;
    border-top: 1px solid var(--line);
  }

  .view-options-grid {
    grid-template-columns: 1fr;
  }

  .group {
    width: 100%;
    flex-wrap: wrap;
  }

  .inline-control {
    flex: 1 1 180px;
    justify-content: space-between;
  }

  .slider-cluster {
    width: 100%;
  }

  .inline-control input[type="range"] {
    width: min(100%, 180px);
  }

  .tool-select {
    min-width: 120px;
  }

  #paint-canvas {
    width: 100%;
  }

  #guide-canvas {
    width: 100%;
  }

  .layer-panel {
    top: 8px;
    left: 8px;
    width: min(88vw, 270px);
    max-height: min(65vh, calc(100% - 16px));
  }
}

@media (max-width: 640px) {
  .app-shell {
    padding: 10px;
    gap: 10px;
  }

  .toolbar {
    gap: 6px;
    padding: 8px;
  }

  .tool-button {
    padding: 7px 9px;
    font-size: 0.82rem;
  }

  .inline-control {
    flex: 1 1 100%;
    font-size: 0.82rem;
  }

  .inline-control output {
    width: 36px;
  }

  .layer-button-row {
    grid-template-columns: 1fr;
  }

  .brush-modal-grid {
    grid-template-columns: 1fr;
  }
}

/* Preview Modal */
.preview-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
}

.preview-modal-content {
  position: absolute;
  left: 16px;
  top: 16px;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(35, 25, 19, 0.95);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
  pointer-events: auto;
}

.preview-window-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: move;
  user-select: none;
  color: var(--text);
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

#preview-canvas {
  display: block;
  border: 2px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  background:
    linear-gradient(45deg, rgba(0, 0, 0, 0.06) 25%, transparent 25%, transparent 75%, rgba(0, 0, 0, 0.06) 75%),
    linear-gradient(45deg, rgba(0, 0, 0, 0.06) 25%, transparent 25%, transparent 75%, rgba(0, 0, 0, 0.06) 75%);
  background-position: 0 0, 6px 6px;
  background-size: 12px 12px;
  background-color: #fff;
}

.preview-close {
  padding: 6px 10px;
}

.view-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
}

.view-modal-content {
  position: absolute;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(35, 25, 19, 0.95);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
  pointer-events: auto;
  min-width: 200px;
}

.view-modal-content.minimized .view-window-content {
  display: none;
}

.view-window-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: move;
  user-select: none;
  touch-action: none;
  color: #ffffff;
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.view-window-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.view-option-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.85rem;
}

.save-status {
  text-align: center;
  font-size: 0.8rem;
  padding: 6px 8px;
  border-radius: 3px;
  font-weight: 500;
  margin-bottom: 4px;
}

.save-status.unsaved {
  background-color: #ffd700;
  color: #333;
}

.save-status.saved {
  background-color: #90ee90;
  color: #333;
}

.view-button-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.view-minimize {
  padding: 6px 10px;
}