/* =============================================================================
   Photoshop Professional Studio Theme
   ============================================================================= */

:root {
  /* Photoshop Dark Theme Colors */
  --ps-bg: #1e1e1e;
  --ps-surface: #2d2d2d;
  --ps-surface-light: #3a3a3a;
  --ps-surface-hover: #414141;
  --ps-border: #1a1a1a;
  --ps-border-light: #4a4a4a;
  --ps-text: #f0f0f0;
  --ps-text-muted: #a0a0a0;
  --ps-text-dim: #6f6f6f;
  --ps-accent: #1473e6;
  --ps-accent-hover: #0d66d0;
  --ps-accent-light: rgba(20, 115, 230, 0.15);
  --ps-success: #0f9960;
  --ps-warning: #f5a623;
  --ps-danger: #eb5757;

  /* Spacing */
  --ps-gap-xs: 4px;
  --ps-gap-sm: 8px;
  --ps-gap-md: 12px;
  --ps-gap-lg: 16px;
  --ps-gap-xl: 24px;

  /* Sizes */
  --ps-toolbar-width: 52px;
  --ps-sidebar-width: 280px;
  --ps-header-height: 44px;
  --ps-panel-header-height: 32px;

  /* Typography */
  --ps-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Adobe Clean", sans-serif;
  --ps-font-mono: "SF Mono", Monaco, "Cascadia Code", "Consolas", monospace;

  /* Dynamic viewport helpers */
  --app-vh: 1vh;
  --app-safe-bottom: 0px;
  --keyboard-offset: 0px;
  --keyboard-offset-raw: 0px;
  --app-result-height: 0px;
}

/* =============================================================================
   Reset & Base
   ============================================================================= */

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

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  background: var(--ps-bg);
  color: var(--ps-text);
  font-family: var(--ps-font);
  font-size: 13px;
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.ps-keyboard-open {
  overflow-y: auto;
}

body.ps-keyboard-open .ps-app {
  height: auto;
  min-height: calc(var(--app-vh, 1vh) * 100);
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  color: var(--ps-text);
  background: var(--ps-surface);
  border: 1px solid var(--ps-border-light);
  border-radius: 2px;
  padding: 4px 8px;
  transition: all 0.15s ease;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--ps-accent);
  background: var(--ps-surface-light);
}

textarea {
  resize: vertical;
}

/* =============================================================================
   Layout Structure
   ============================================================================= */

.ps-app {
  width: 100%;
  height: calc(var(--app-vh, 1vh) * 100);
  min-height: calc(var(--app-vh, 1vh) * 100);
  display: flex;
  flex-direction: column;
  background: var(--ps-bg);
  padding-bottom: calc(var(--app-safe-bottom, 0px) + var(--keyboard-offset, 0px));
}

/* Header */
.ps-header {
  height: var(--ps-header-height);
  background: var(--ps-surface);
  border-bottom: 1px solid var(--ps-border);
  display: flex;
  align-items: center;
  padding: 0 var(--ps-gap-md);
  gap: var(--ps-gap-lg);
  flex-shrink: 0;
  z-index: 100;
}

.ps-header-logo {
  font-size: 14px;
  font-weight: 600;
  color: var(--ps-text);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.ps-header-menu {
  display: flex;
  gap: var(--ps-gap-sm);
  flex: 1;
}

.ps-menu-item {
  padding: 6px 12px;
  border-radius: 3px;
  font-size: 12px;
  color: var(--ps-text-muted);
  transition: all 0.15s ease;
}

.ps-menu-item:hover {
  background: var(--ps-surface-hover);
  color: var(--ps-text);
}

.ps-menu-item.active {
  background: var(--ps-accent-light);
  color: var(--ps-accent);
}

.ps-header-actions {
  display: flex;
  align-items: center;
  gap: var(--ps-gap-md);
}

/* Main Container */
.ps-container {
  flex: 1;
  display: flex;
  overflow: hidden;
  position: relative;
}

/* Toolbar (Left) */
.ps-toolbar {
  width: var(--ps-toolbar-width);
  background: var(--ps-surface);
  border-right: 1px solid var(--ps-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--ps-gap-sm) 0;
  gap: var(--ps-gap-xs);
  overflow-y: auto;
  flex-shrink: 0;
}

.ps-tool-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  color: var(--ps-text-muted);
  transition: all 0.15s ease;
  position: relative;
}

.ps-tool-btn:hover {
  background: var(--ps-surface-hover);
  color: var(--ps-text);
}

.ps-tool-btn.active {
  background: var(--ps-accent);
  color: white;
}

.ps-tool-btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.ps-tool-separator {
  width: 24px;
  height: 1px;
  background: var(--ps-border-light);
  margin: var(--ps-gap-xs) 0;
}

/* Canvas Area */
.ps-canvas-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--ps-bg);
  overflow: hidden;
}

.ps-canvas-toolbar {
  height: 40px;
  background: var(--ps-surface);
  border-bottom: 1px solid var(--ps-border);
  display: flex;
  align-items: center;
  padding: 0 var(--ps-gap-md);
  gap: var(--ps-gap-lg);
  flex-shrink: 0;
}

.ps-canvas-toolbar-group {
  display: flex;
  align-items: center;
  gap: var(--ps-gap-sm);
}

.ps-canvas-toolbar-separator {
  width: 1px;
  height: 24px;
  background: var(--ps-border-light);
}

.ps-canvas-viewport {
  flex: 1;
  position: relative;
  overflow: auto;
  background:
    linear-gradient(45deg, #2a2a2a 25%, transparent 25%),
    linear-gradient(-45deg, #2a2a2a 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #2a2a2a 75%),
    linear-gradient(-45deg, transparent 75%, #2a2a2a 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

.ps-canvas-content {
  min-width: 100%;
  min-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

.ps-canvas {
  background: white;
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.2),
    0 10px 30px rgba(0, 0, 0, 0.4);
  position: relative;
  max-width: 100%;
  max-height: 100%;
}

.ps-canvas img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* Canvas Placeholder */
.ps-canvas-placeholder {
  width: 600px;
  height: 400px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--ps-gap-lg);
  background: var(--ps-surface);
  border: 2px dashed var(--ps-border-light);
  border-radius: 8px;
  color: var(--ps-text-muted);
}

.ps-canvas-placeholder-icon {
  font-size: 48px;
  opacity: 0.5;
}

.ps-canvas-placeholder-text {
  font-size: 14px;
}

/* Right Sidebar */
.ps-sidebar {
  width: var(--ps-sidebar-width);
  background: var(--ps-surface);
  border-left: 1px solid var(--ps-border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
}

.ps-sidebar-tabs {
  height: 36px;
  display: flex;
  border-bottom: 1px solid var(--ps-border);
  flex-shrink: 0;
}

.ps-sidebar-tab {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: var(--ps-text-muted);
  border-right: 1px solid var(--ps-border);
  transition: all 0.15s ease;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.ps-sidebar-tab:last-child {
  border-right: none;
}

.ps-sidebar-tab:hover {
  background: var(--ps-surface-hover);
  color: var(--ps-text);
}

.ps-sidebar-tab.active {
  background: var(--ps-surface-light);
  color: var(--ps-text);
  border-bottom: 2px solid var(--ps-accent);
}

.ps-sidebar-content {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
}

/* Panel */
.ps-panel {
  border-bottom: 1px solid var(--ps-border);
}

.ps-panel-header {
  height: var(--ps-panel-header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--ps-gap-md);
  background: var(--ps-surface-light);
  cursor: pointer;
  user-select: none;
}

.ps-panel-header:hover {
  background: var(--ps-surface-hover);
}

.ps-panel-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--ps-text);
}

.ps-panel-toggle {
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ps-text-muted);
  transition: transform 0.2s ease;
}

.ps-panel.collapsed .ps-panel-toggle {
  transform: rotate(-90deg);
}

.ps-panel-body {
  padding: var(--ps-gap-md);
  max-height: 500px;
  overflow-y: auto;
  transition: max-height 0.3s ease;
}

.ps-panel.collapsed .ps-panel-body {
  max-height: 0;
  padding: 0;
  overflow: hidden;
}

/* Form Controls */
.ps-form-group {
  margin-bottom: var(--ps-gap-md);
}

.ps-form-label {
  display: block;
  margin-bottom: var(--ps-gap-xs);
  font-size: 11px;
  color: var(--ps-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.ps-form-control {
  width: 100%;
  padding: 6px 8px;
  background: var(--ps-bg);
  border: 1px solid var(--ps-border-light);
  border-radius: 2px;
  color: var(--ps-text);
  font-size: 12px;
}

.ps-form-control:focus {
  border-color: var(--ps-accent);
  outline: none;
}

.ps-form-row {
  display: flex;
  gap: var(--ps-gap-sm);
}

.ps-form-row .ps-form-group {
  flex: 1;
}

/* Buttons */
.ps-btn {
  padding: 6px 16px;
  border-radius: 3px;
  font-size: 12px;
  font-weight: 500;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--ps-gap-sm);
  white-space: nowrap;
}

.ps-btn-primary {
  background: var(--ps-accent);
  color: white;
}

.ps-btn-primary:hover:not(:disabled) {
  background: var(--ps-accent-hover);
}

.ps-btn-secondary {
  background: var(--ps-surface-light);
  color: var(--ps-text);
  border: 1px solid var(--ps-border-light);
}

.ps-btn-secondary:hover:not(:disabled) {
  background: var(--ps-surface-hover);
}

.ps-btn-ghost {
  background: transparent;
  color: var(--ps-text-muted);
}

.ps-btn-ghost:hover:not(:disabled) {
  background: var(--ps-surface-hover);
  color: var(--ps-text);
}

.ps-btn-sm {
  padding: 4px 10px;
  font-size: 11px;
}

.ps-btn-icon {
  padding: 6px;
  width: 28px;
  height: 28px;
}

/* Layers Panel */
.ps-layer {
  display: flex;
  align-items: center;
  gap: var(--ps-gap-sm);
  padding: 6px var(--ps-gap-sm);
  border-radius: 2px;
  cursor: pointer;
  transition: background 0.15s ease;
  margin-bottom: 2px;
}

.ps-layer:hover {
  background: var(--ps-surface-hover);
}

.ps-layer.active {
  background: var(--ps-accent-light);
  border: 1px solid var(--ps-accent);
}

.ps-layer-thumbnail {
  width: 32px;
  height: 32px;
  background: white;
  border: 1px solid var(--ps-border-light);
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
}

.ps-layer-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ps-layer-info {
  flex: 1;
  min-width: 0;
}

.ps-layer-name {
  font-size: 12px;
  color: var(--ps-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ps-layer-meta {
  font-size: 10px;
  color: var(--ps-text-dim);
}

.ps-layer-visibility {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ps-text-muted);
  flex-shrink: 0;
}

.ps-layer-visibility:hover {
  color: var(--ps-text);
}

/* History Panel */
.ps-history-item {
  display: flex;
  align-items: center;
  gap: var(--ps-gap-sm);
  padding: 6px var(--ps-gap-md);
  cursor: pointer;
  transition: background 0.15s ease;
  border-left: 2px solid transparent;
}

.ps-history-item:hover {
  background: var(--ps-surface-hover);
}

.ps-history-item.active {
  background: var(--ps-accent-light);
  border-left-color: var(--ps-accent);
}

.ps-history-icon {
  width: 16px;
  height: 16px;
  color: var(--ps-text-muted);
}

.ps-history-text {
  flex: 1;
  font-size: 11px;
  color: var(--ps-text);
}

.ps-history-time {
  font-size: 10px;
  color: var(--ps-text-dim);
}

/* Properties Panel */
.ps-prop-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--ps-gap-sm);
}

.ps-prop-item {
  display: flex;
  flex-direction: column;
  gap: var(--ps-gap-xs);
}

.ps-prop-label {
  font-size: 10px;
  color: var(--ps-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.ps-prop-value {
  display: flex;
  align-items: center;
  gap: var(--ps-gap-xs);
}

.ps-prop-input {
  flex: 1;
  min-width: 0;
  padding: 4px 6px;
  background: var(--ps-bg);
  border: 1px solid var(--ps-border-light);
  border-radius: 2px;
  color: var(--ps-text);
  font-size: 11px;
}

.ps-prop-unit {
  font-size: 10px;
  color: var(--ps-text-dim);
}

/* Slider */
.ps-slider {
  width: 100%;
  height: 4px;
  background: var(--ps-bg);
  border-radius: 2px;
  outline: none;
  -webkit-appearance: none;
  margin: var(--ps-gap-sm) 0;
}

.ps-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  background: var(--ps-accent);
  border-radius: 50%;
  cursor: pointer;
}

.ps-slider::-moz-range-thumb {
  width: 12px;
  height: 12px;
  background: var(--ps-accent);
  border-radius: 50%;
  cursor: pointer;
  border: none;
}

/* Color Picker */
.ps-color-picker {
  display: flex;
  gap: var(--ps-gap-sm);
}

.ps-color-swatch {
  width: 32px;
  height: 32px;
  border: 2px solid var(--ps-border-light);
  border-radius: 3px;
  cursor: pointer;
  transition: border-color 0.15s ease;
}

.ps-color-swatch:hover {
  border-color: var(--ps-accent);
}

/* Status Bar */
.ps-status-bar {
  height: 28px;
  background: var(--ps-surface);
  border-top: 1px solid var(--ps-border);
  display: flex;
  align-items: center;
  padding: 0 var(--ps-gap-md);
  gap: var(--ps-gap-lg);
  font-size: 11px;
  color: var(--ps-text-muted);
  flex-shrink: 0;
}

.ps-status-item {
  display: flex;
  align-items: center;
  gap: var(--ps-gap-xs);
}

.ps-status-separator {
  width: 1px;
  height: 16px;
  background: var(--ps-border-light);
}

/* Tag Grid */
.ps-tag-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.ps-tag {
  padding: 3px 8px;
  background: var(--ps-bg);
  border: 1px solid var(--ps-border-light);
  border-radius: 3px;
  font-size: 10px;
  color: var(--ps-text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.ps-tag:hover {
  background: var(--ps-surface-hover);
  border-color: var(--ps-accent);
  color: var(--ps-text);
}

.ps-tag.active {
  background: var(--ps-accent);
  border-color: var(--ps-accent);
  color: white;
}

/* Empty State */
.ps-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--ps-gap-md);
  padding: var(--ps-gap-xl);
  color: var(--ps-text-dim);
  text-align: center;
}

.ps-empty-icon {
  font-size: 32px;
  opacity: 0.3;
}

.ps-empty-text {
  font-size: 12px;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--ps-surface);
}

::-webkit-scrollbar-thumb {
  background: var(--ps-surface-light);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--ps-surface-hover);
}

/* Tooltips */
.ps-tooltip {
  position: absolute;
  background: rgba(0, 0, 0, 0.9);
  color: white;
  padding: 4px 8px;
  border-radius: 3px;
  font-size: 11px;
  white-space: nowrap;
  pointer-events: none;
  z-index: 1000;
}

/* Modal */
.ps-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(2px);
}

.ps-modal-content {
  background: var(--ps-surface);
  border: 1px solid var(--ps-border-light);
  border-radius: 4px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  max-width: 90vw;
  max-height: 90vh;
  overflow: auto;
}

.ps-modal-header {
  padding: var(--ps-gap-lg);
  border-bottom: 1px solid var(--ps-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ps-modal-title {
  font-size: 14px;
  font-weight: 600;
}

.ps-modal-close {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 3px;
  color: var(--ps-text-muted);
  transition: all 0.15s ease;
}

.ps-modal-close:hover {
  background: var(--ps-surface-hover);
  color: var(--ps-text);
}

.ps-modal-body {
  padding: var(--ps-gap-lg);
}

.ps-modal-footer {
  padding: var(--ps-gap-lg);
  border-top: 1px solid var(--ps-border);
  display: flex;
  justify-content: flex-end;
  gap: var(--ps-gap-sm);
}

/* Utility Classes */
.ps-flex {
  display: flex;
}

.ps-flex-col {
  display: flex;
  flex-direction: column;
}

.ps-flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.ps-gap-sm {
  gap: var(--ps-gap-sm);
}

.ps-gap-md {
  gap: var(--ps-gap-md);
}

.ps-gap-lg {
  gap: var(--ps-gap-lg);
}

.ps-text-center {
  text-align: center;
}

.ps-text-muted {
  color: var(--ps-text-muted);
}

.ps-mt-md {
  margin-top: var(--ps-gap-md);
}

.ps-mb-md {
  margin-bottom: var(--ps-gap-md);
}

/* Responsive */
@media (max-width: 1200px) {
  .ps-sidebar {
    width: 240px;
  }
}

@media (max-width: 900px) {
  .ps-toolbar {
    width: 44px;
  }

  .ps-tool-btn {
    width: 32px;
    height: 32px;
  }

  .ps-sidebar {
    width: 220px;
  }
}