@import url("https://fonts.googleapis.com/css2?family=Press+Start+2P&display=swap");
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap");

:root {
  --bg-primary: #12120f;
  --bg-secondary: #1a1a17;
  --bg-surface: #1f1f1b;
  --bg-elevated: #272722;
  --bg-hover: #2f2f2a;

  --accent: #74bb4a;
  --accent-dark: #4c7932;
  --accent-glow: rgba(116, 187, 74, 0.3);
  --accent-subtle: rgba(116, 187, 74, 0.1);

  --text-primary: #e8e4dd;
  --text-secondary: #a09b92;
  --text-muted: #6b675f;

  --border: #2e2e29;
  --border-accent: #74bb4a;
  --border-subtle: #22221e;

  --danger: #e74c3c;
  --danger-dark: #c0392b;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 20px rgba(116, 187, 74, 0.15);

  --transition-fast: 0.12s ease;
  --transition: 0.2s ease;
  --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);

  --font-display: "Press Start 2P", monospace;
  --font-body: "Inter", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;

  --toolbar-width: 240px;
}

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

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Toast */
.toast-container {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: toastIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  min-width: 280px;
  max-width: 400px;
}

.toast.removing {
  animation: toastOut 0.25s ease forwards;
}

.toast i {
  font-size: 1rem;
}

.toast.success {
  border-color: var(--accent);
  background: linear-gradient(135deg, var(--bg-elevated), rgba(116, 187, 74, 0.08));
}

.toast.success i {
  color: var(--accent);
}

.toast.error {
  border-color: var(--danger);
  background: linear-gradient(135deg, var(--bg-elevated), rgba(231, 76, 60, 0.08));
}

.toast.error i {
  color: var(--danger);
}

.toast.warning {
  border-color: #f39c12;
  background: linear-gradient(135deg, var(--bg-elevated), rgba(243, 156, 18, 0.08));
}

.toast.warning i {
  color: #f39c12;
}

.toast.info {
  border-color: #3498db;
  background: linear-gradient(135deg, var(--bg-elevated), rgba(52, 152, 219, 0.08));
}

.toast.info i {
  color: #3498db;
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateX(100%) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

@keyframes toastOut {
  from {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
  to {
    opacity: 0;
    transform: translateX(100%) scale(0.95);
  }
}

/* Header */
header {
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  border-bottom: 1px solid var(--border);
  padding: 12px 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.header-content {
  display: flex;
  align-items: baseline;
  gap: 12px;
  max-width: 1400px;
  margin: 0 auto;
}

header h1 {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--accent);
  letter-spacing: 2px;
  text-shadow: 0 0 30px var(--accent-glow);
}

.header-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.5px;
}

/* Main layout */
main {
  display: flex;
  flex: 1;
  margin: 0 auto;
  width: 100%;
}

/* Toolbar */
.toolbar {
  width: var(--toolbar-width);
  min-width: var(--toolbar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 0;
  height: calc(100vh - 53px);
  position: sticky;
  top: 53px;
  overflow: hidden;
}

.toolbar-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.tool-section {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.tool-section h3 {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent);
  font-weight: 600;
  opacity: 0.8;
}

.tool-buttons {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px;
}

.tool-btn {
  width: 100%;
  aspect-ratio: 1;
  font-size: 1.2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.tool-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--text-muted);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.tool-btn:active {
  transform: translateY(0) scale(0.96);
}

.tool-btn.active {
  background: linear-gradient(135deg, var(--accent-dark), var(--accent));
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 0 16px var(--accent-glow);
}

/* Tooltip */
.tool-btn::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) scale(0.9);
  background: var(--bg-elevated);
  color: var(--text-primary);
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 500;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: all 0.15s ease;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
}

.tool-btn::before {
  content: attr(data-shortcut);
  position: absolute;
  bottom: 4px;
  right: 6px;
  font-size: 0.55rem;
  color: var(--text-muted);
  font-weight: 600;
  opacity: 0;
  transition: opacity var(--transition);
}

.tool-btn:hover::after {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

.tool-btn:hover::before {
  opacity: 1;
}

/* Custom color input */
.custom-color-label {
  display: flex;
  justify-content: center;
}

.custom-color-label input[type="color"] {
  width: 64px;
  height: 64px;
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  background: none;
  padding: 2px;
  transition: all var(--transition);
}

.custom-color-label input[type="color"]:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
}

/* Recent colors */
.recent-colors {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.recent-colors-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  font-weight: 600;
}

.recent-colors-swatches {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.recent-swatch {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}

.recent-swatch:hover {
  transform: scale(1.25);
  border-color: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
  z-index: 1;
}

.recent-swatch:active {
  transform: scale(1.1);
}

/* Grid controls */
.grid-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.checkbox-container input[type="checkbox"] {
  visibility: hidden;
  display: none;
}

.checkbox-container .toggle {
  position: relative;
  display: block;
  width: 36px;
  height: 20px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  flex-shrink: 0;
}

.checkbox-container .toggle:before {
  content: "";
  position: relative;
  top: 3px;
  left: 2px;
  width: 32px;
  height: 14px;
  display: block;
  background: #3a3a35;
  border-radius: 7px;
  transition: background var(--transition);
}

.checkbox-container .toggle span {
  position: absolute;
  top: 0;
  left: 0;
  width: 20px;
  height: 20px;
  display: block;
  background: #6b675f;
  border-radius: 10px;
  transition: all var(--transition-slow);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}

.checkbox-container #grid-checkbox:checked + .toggle:before {
  background: var(--accent-glow);
}

.checkbox-container #grid-checkbox:checked + .toggle span {
  background: var(--accent);
  transform: translateX(16px);
  box-shadow: 0 1px 6px var(--accent-glow);
}

select {
  flex: 1;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color var(--transition);
  font-family: var(--font-body);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b675f' d='M6 8.5L1.5 4h9z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 28px;
}

select:hover {
  border-color: var(--text-muted);
}

select:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-subtle);
}

/* Sliders */
.slider-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.slider-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.slider-label span:last-child {
  color: var(--accent);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
  transition: background var(--transition);
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: 0 0 6px var(--accent-glow);
  border: 2px solid var(--bg-primary);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
  box-shadow: 0 0 12px var(--accent-glow);
}

input[type="range"]::-webkit-slider-thumb:active {
  transform: scale(0.95);
}

input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid var(--bg-primary);
  box-shadow: 0 0 6px var(--accent-glow);
}

input[type="range"]:hover {
  background: var(--text-muted);
}

input[type="range"]:focus-visible {
  outline: none;
}

input[type="range"]:focus-visible::-webkit-slider-thumb {
  box-shadow: 0 0 0 4px var(--accent-subtle), 0 0 12px var(--accent-glow);
}

/* Buttons */
.secondary-btn {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-family: var(--font-body);
}

.secondary-btn:hover {
  background: var(--bg-hover);
  border-color: var(--accent);
  color: var(--accent);
}

.secondary-btn:active {
  transform: scale(0.98);
}

/* Templates button */
.templates-btn {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  font-family: var(--font-body);
}

.templates-btn:hover {
  background: var(--bg-hover);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--shadow-glow);
}

.templates-btn:active {
  transform: scale(0.98);
}

.templates-btn i {
  font-size: 1.1rem;
}

/* Shortcuts */
.shortcuts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px;
}

.shortcut-item {
  font-size: 0.65rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

.shortcut-item kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 3px;
  font-size: 0.6rem;
  font-family: var(--font-body);
  color: var(--text-secondary);
  font-weight: 600;
}

/* Bottom toolbar */
.bottom-toolbar {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-top: 1px solid var(--border);
  background: var(--bg-primary);
}

.bottom-toolbar-btn {
  width: 100%;
  padding: 11px 14px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  letter-spacing: 0.3px;
}

.bottom-toolbar-btn:active {
  transform: scale(0.98);
}

.bottom-toolbar-btn.primary {
  background: linear-gradient(135deg, var(--accent-dark), var(--accent));
  color: #fff;
  box-shadow: 0 2px 10px var(--accent-glow);
}

.bottom-toolbar-btn.primary:hover {
  box-shadow: 0 4px 20px var(--accent-glow);
  filter: brightness(1.08);
}

.bottom-toolbar-btn.primary:active {
  filter: brightness(0.95);
}

.bottom-toolbar-btn.danger {
  background: var(--bg-surface);
  color: var(--danger);
  border: 1px solid transparent;
}

.bottom-toolbar-btn.danger:hover {
  background: rgba(231, 76, 60, 0.08);
  border-color: var(--danger);
}

.bottom-toolbar-btn.danger:active {
  background: rgba(231, 76, 60, 0.15);
}

/* Canvas wrapper */
.canvas-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
  gap: 16px;
  min-width: 0;
}

.canvas-container {
  display: flex;
  align-items: center;
  justify-content: center;
  background-image:
    linear-gradient(45deg, #1a1a17 25%, transparent 25%),
    linear-gradient(-45deg, #1a1a17 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #1a1a17 75%),
    linear-gradient(-45deg, transparent 75%, #1a1a17 75%);
  background-size: 16px 16px;
  background-position:
    0 0,
    0 8px,
    8px -8px,
    -8px 0;
  border-radius: var(--radius-lg);
  padding: 4px;
}

.canvas-border {
  border-radius: var(--radius-md);
  box-shadow:
    0 0 0 1px var(--border-subtle),
    0 4px 24px rgba(0, 0, 0, 0.6),
    0 0 60px rgba(0, 0, 0, 0.3);
  overflow: hidden;
  transition: box-shadow var(--transition);
  line-height: 0;
}

.canvas-border:hover {
  box-shadow:
    0 0 0 1px var(--border),
    0 6px 32px rgba(0, 0, 0, 0.6),
    0 0 60px rgba(0, 0, 0, 0.3);
}

canvas {
  display: block;
  cursor: crosshair;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.canvas-info {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.5px;
}

/* Modal */
.templates-modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  animation: overlayIn 0.25s ease;
}

.templates-modal-overlay.active {
  display: flex;
}

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

.templates-modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  max-width: 640px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: modalIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.92) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.templates-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.templates-modal-header h2 {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--accent);
  letter-spacing: 1px;
}

.templates-modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.3rem;
  cursor: pointer;
  transition: all var(--transition);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
}

.templates-modal-close:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.templates-modal-content {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.templates-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.templates-section h3 {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--accent);
  font-weight: 600;
  opacity: 0.8;
}

.templates-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(72px, 1fr));
  gap: 10px;
}

.template-thumbnail {
  width: 100%;
  aspect-ratio: 1;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  background-color: var(--bg-primary);
  transition: all var(--transition);
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  object-fit: cover;
}

.template-thumbnail:hover {
  transform: scale(1.12);
  border-color: var(--accent);
  box-shadow: 0 0 16px var(--accent-glow);
  z-index: 1;
}

.template-thumbnail:active {
  transform: scale(1.05);
}

.template-thumbnail.active {
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}

/* Upload area */
.upload-section {
  gap: 10px;
}

.upload-area {
  position: relative;
  border: 2px dashed var(--border);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: all var(--transition);
  background: var(--bg-primary);
}

.upload-area:hover {
  border-color: var(--accent);
  background: var(--accent-subtle);
}

.upload-area i {
  font-size: 1.5rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

.upload-area:hover i {
  color: var(--accent);
}

.upload-area span {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

#template-upload {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

/* Responsive */
@media (max-width: 900px) {
  .toolbar {
    width: 200px;
    min-width: 200px;
  }

  .tool-buttons {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  main {
    flex-direction: column;
  }

  .toolbar {
    width: 100%;
    min-width: 0;
    height: auto;
    position: static;
    border-right: none;
    border-bottom: 1px solid var(--border);
    max-height: none;
  }

  .toolbar-scroll {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    padding: 16px;
    overflow-y: visible;
  }

  .tool-section:first-child {
    grid-column: 1 / -1;
  }

  .tool-section:last-child {
    grid-column: 1 / -1;
  }

  .bottom-toolbar {
    flex-direction: row;
    border-top: none;
    border-bottom: 1px solid var(--border);
    padding: 12px 16px;
  }

  .bottom-toolbar-btn {
    flex: 1;
  }

  .canvas-wrapper {
    padding: 16px;
  }

  .shortcuts-grid {
    display: none;
  }

  .templates-gallery {
    grid-template-columns: repeat(auto-fill, minmax(56px, 1fr));
    gap: 8px;
  }

  .templates-modal {
    width: 95%;
    max-height: 90vh;
  }

  header h1 {
    font-size: 0.8rem;
  }

  .header-subtitle {
    font-size: 0.65rem;
  }
}

@media (max-width: 480px) {
  .toolbar-scroll {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    padding: 12px;
  }

  .canvas-wrapper {
    padding: 12px;
  }

  .templates-gallery {
    grid-template-columns: repeat(auto-fill, minmax(48px, 1fr));
    gap: 6px;
  }
}