/* ================================================================
   PixelForge — Dark Industrial Aesthetic
   ================================================================ */

:root {
  --bg-base: #0e0e0f;
  --bg-surface: #161618;
  --bg-elevated: #1e1e21;
  --bg-hover: #27272b;
  --border: #2f2f34;
  --border-bright: #45454e;
  --accent: #f0e040;
  --accent-dim: #b8aa1a;
  --text-primary: #e8e8ec;
  --text-secondary: #8888a0;
  --text-muted: #55556a;
  --danger: #ff4455;
  --success: #40e0a0;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --toolbar-w: 64px;
  --panel-w: 280px;
  --header-h: 52px;
  --font-ui: 'Syne', sans-serif;
  --font-mono: 'Space Mono', monospace;
}

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

body {
  font-family: var(--font-ui);
  background: var(--bg-base);
  color: var(--text-primary);
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  user-select: none;
}

/* HEADER */
.header {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  z-index: 100;
}
.logo {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}
.logo span { color: var(--accent); }
.header-actions { display: flex; gap: 8px; }

/* BUTTONS */
.btn {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #0e0e0f;
  border-color: var(--accent);
}
.btn-primary:hover { background: #fff040; }
.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-bright);
}
.btn-ghost:hover { background: var(--bg-hover); border-color: var(--text-secondary); }
.btn-sm { font-size: 12px; padding: 5px 10px; }
.w-full { width: 100%; margin-top: 8px; }

/* APP LAYOUT */
.app-layout {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* LEFT TOOLBAR */
.toolbar-left {
  width: var(--toolbar-w);
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px 6px;
  gap: 4px;
  overflow-y: auto;
  flex-shrink: 0;
}
.tool-group { display: flex; flex-direction: column; gap: 2px; width: 100%; }
.tool-separator { width: 80%; height: 1px; background: var(--border); margin: 6px 0; }

.tool-btn {
  width: 50px; height: 46px;
  display: flex; align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all .12s;
  font-size: 18px;
}
.tool-btn svg { width: 20px; height: 20px; }
.tool-btn:hover { background: var(--bg-hover); color: var(--text-primary); border-color: var(--border); }
.tool-btn.active { background: var(--accent); color: #0e0e0f; border-color: transparent; }

.color-section {
  position: relative;
  width: 50px; height: 46px;
  display: flex; align-items: center; justify-content: center;
}
.color-stack { position: relative; width: 38px; height: 38px; }
.color-swatch {
  width: 26px; height: 26px;
  border-radius: 3px;
  border: 2px solid var(--border-bright);
  cursor: pointer;
  position: absolute;
}
.fg-swatch { bottom: 0; left: 0; z-index: 2; }
.bg-swatch { top: 0; right: 0; z-index: 1; }

.brush-size-wrap {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  font-family: var(--font-mono); font-size: 9px; color: var(--text-secondary);
  width: 100%;
}
.brush-size-wrap label { font-size: 9px; text-transform: uppercase; letter-spacing: 0.5px; }
.brush-size-wrap span { font-size: 9px; color: var(--accent); }
.v-slider {
  width: 44px;
  -webkit-appearance: none;
  appearance: none;
  height: 3px;
  background: var(--border-bright);
  border-radius: 2px;
  cursor: pointer;
}
.v-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
}

/* CANVAS AREA */
.canvas-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: #111113;
}

.canvas-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 12px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  min-height: 44px;
}

.zoom-controls { display: flex; align-items: center; gap: 4px; }
.mini-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 8px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  cursor: pointer;
  transition: all .12s;
  white-space: nowrap;
}
.mini-btn:hover { background: var(--bg-hover); border-color: var(--border-bright); }
.mini-btn.active { background: var(--accent); color: #0e0e0f; border-color: transparent; }
#zoomLabel {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
  min-width: 42px;
  text-align: center;
}

.canvas-size-controls { display: flex; align-items: center; gap: 4px; }
.size-input {
  font-family: var(--font-mono);
  font-size: 11px;
  width: 56px; padding: 4px 6px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  text-align: center;
}
.size-select {
  font-family: var(--font-ui);
  font-size: 11px;
  padding: 4px 6px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  cursor: pointer;
}
.canvas-size-controls label { font-size: 11px; color: var(--text-secondary); }

.history-btns { display: flex; gap: 4px; margin-left: auto; }

/* CANVAS VIEWPORT */
.canvas-viewport {
  flex: 1;
  overflow: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    repeating-conic-gradient(#1a1a1d 0% 25%, #111113 0% 50%)
    0 0 / 24px 24px;
  position: relative;
}

.canvas-wrapper {
  position: relative;
  box-shadow: 0 8px 40px rgba(0,0,0,.6);
  transform-origin: top left;
  cursor: crosshair;
}
#mainCanvas { display: block; }
#overlayCanvas { display: block; }

/* CROP OVERLAY */
.crop-overlay {
  position: absolute;
  background: rgba(0,0,0,.5);
  border: 2px dashed var(--accent);
  cursor: crosshair;
  pointer-events: none;
  z-index: 50;
}

/* RIGHT PANEL */
.panel-right {
  width: var(--panel-w);
  background: var(--bg-surface);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow: hidden;
}
.panel-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.ptab {
  flex: 1;
  padding: 10px 4px;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all .15s;
}
.ptab:hover { color: var(--text-secondary); }
.ptab.active { color: var(--accent); border-bottom-color: var(--accent); }

.panel-content {
  display: none;
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  gap: 12px;
  flex-direction: column;
}
.panel-content.active { display: flex; }

.panel-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.panel-section:last-child { border-bottom: none; }

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 0;
}
.section-header span {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
}
.section-actions { display: flex; gap: 4px; }
.icon-btn {
  width: 26px; height: 26px;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all .12s;
}
.icon-btn:hover { background: var(--bg-hover); color: var(--text-primary); }

/* LAYERS LIST */
.layers-list {
  display: flex;
  flex-direction: column;
  gap: 3px;
  max-height: 200px;
  overflow-y: auto;
}
.layer-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .1s;
  font-size: 12px;
}
.layer-item:hover { background: var(--bg-hover); }
.layer-item.selected { background: rgba(240,224,64,.08); border-color: rgba(240,224,64,.3); }
.layer-thumb {
  width: 28px; height: 28px;
  border-radius: 3px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  object-fit: cover;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px;
}
.layer-info { flex: 1; min-width: 0; }
.layer-name { font-size: 12px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.layer-type { font-size: 9px; color: var(--text-muted); font-family: var(--font-mono); }
.layer-vis {
  font-size: 14px;
  cursor: pointer;
  opacity: 0.5;
  transition: opacity .1s;
}
.layer-vis:hover { opacity: 1; }
.layer-vis.hidden { opacity: 0.2; }
.layer-lock {
  font-size: 12px;
  cursor: pointer;
  opacity: 0.4;
}
.layer-lock:hover { opacity: 1; }
.layer-drag-handle { font-size: 12px; color: var(--text-muted); cursor: grab; }

/* PROP ROWS */
.prop-row {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.prop-row label { font-size: 11px; color: var(--text-secondary); min-width: 50px; }
.prop-slider {
  flex: 1;
  min-width: 60px;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--border-bright);
  border-radius: 2px;
  cursor: pointer;
}
.prop-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
}
.prop-input {
  font-family: var(--font-mono);
  font-size: 11px;
  width: 60px;
  padding: 4px 6px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  text-align: center;
}
.prop-select {
  font-family: var(--font-ui);
  font-size: 11px;
  padding: 4px 6px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  flex: 1;
  cursor: pointer;
}
.color-input {
  width: 34px; height: 26px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: none;
  cursor: pointer;
  padding: 1px;
}
.prop-row span { font-family: var(--font-mono); font-size: 11px; color: var(--accent); min-width: 36px; text-align: right; }

/* TEXT INPUT */
.text-input {
  width: 100%;
  min-height: 64px;
  padding: 8px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 13px;
  resize: vertical;
}
.text-input:focus { outline: none; border-color: var(--accent); }

/* BTN GROUP */
.btn-group { display: flex; gap: 3px; }

/* FILTER GRID */
.filter-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 4px;
}
.filter-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 6px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all .12s;
}
.filter-btn:hover { background: var(--bg-hover); color: var(--text-primary); border-color: var(--border-bright); }
.filter-btn.active { background: rgba(240,224,64,.15); border-color: var(--accent); color: var(--accent); }

/* SHAPE GRID */
.shape-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 4px;
}
.shape-pick {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  padding: 8px 6px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all .12s;
}
.shape-pick:hover { background: var(--bg-hover); color: var(--text-primary); }
.shape-pick.active { background: rgba(240,224,64,.15); border-color: var(--accent); color: var(--accent); }

/* QUALITY BTNS */
.quality-btns { display: flex; gap: 4px; }
.quality-btn {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 5px 8px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all .12s;
}
.quality-btn:hover { background: var(--bg-hover); }
.quality-btn.active { background: var(--accent); color: #0e0e0f; border-color: transparent; font-weight: 700; }

/* MODAL */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.7);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(4px);
}
.modal {
  background: var(--bg-elevated);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-lg);
  width: 380px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,.6);
}
.modal-header {
  padding: 16px 20px;
  font-weight: 700;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-surface);
}
.modal-body { padding: 16px 20px; display: flex; flex-direction: column; gap: 12px; }
.modal-footer {
  padding: 12px 20px;
  display: flex; justify-content: flex-end; gap: 8px;
  border-top: 1px solid var(--border);
}

/* TOAST */
.toast {
  position: fixed;
  bottom: 24px; left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--bg-elevated);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-md);
  padding: 10px 20px;
  font-size: 13px;
  font-weight: 600;
  z-index: 9999;
  transition: transform .3s ease;
  pointer-events: none;
  white-space: nowrap;
}
.toast.show { transform: translateX(-50%) translateY(0); }
.toast.success { border-color: var(--success); color: var(--success); }
.toast.error { border-color: var(--danger); color: var(--danger); }

/* SCROLLBARS */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-bright); border-radius: 3px; }

/* TRANSFORM HANDLES */
.t-handle {
  position: absolute;
  width: 10px; height: 10px;
  border: 2px solid var(--accent);
  background: #0e0e0f;
  border-radius: 2px;
  transform: translate(-50%,-50%);
  cursor: pointer;
  z-index: 200;
}
.selection-rect {
  position: absolute;
  border: 1.5px solid var(--accent);
  pointer-events: none;
  z-index: 190;
}

/* input focus */
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent) !important; }

/* Responsive tweak */
@media (max-width: 900px) {
  :root { --panel-w: 240px; }
}