/* ============================================================
   PixelForge — Bold Brutalist Pixel Art Editor
   style.css
   ============================================================ */

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

/* ---------- Variables ---------- */
:root {
  --bg:        #111111;
  --bg2:       #1a1a1a;
  --bg3:       #222222;
  --bg4:       #2d2d2d;
  --border:    #333333;
  --border-2:  #444444;
  --text-1:    #f0f0f0;
  --text-2:    #888888;
  --text-3:    #555555;
  --accent:    #ff3b30;       /* red — the ONE aggressive color */
  --accent-2:  #ffd60a;       /* yellow for secondary actions */
  --success:   #30d158;
  --toolbar-w: 180px;
  --panel-w:   190px;
  --header-h:  52px;
}

/* ---------- Base ---------- */
html, body { height: 100%; overflow: hidden; }

body {
  background: var(--bg);
  color: var(--text-1);
  font-family: 'Space Grotesk', sans-serif;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  user-select: none;
}

/* ---------- Header ---------- */
.header {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
  border-bottom: 2px solid var(--border);
  background: var(--bg2);
  flex-shrink: 0;
  gap: 1rem;
}

.brand { display: flex; align-items: center; gap: 0.7rem; }

.brand-logo {
  width: 32px; height: 32px;
  background: var(--accent);
  color: #fff;
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  letter-spacing: 0.05em;
}

.brand-name {
  font-family: 'Space Mono', monospace;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-1);
}

.brand-sub {
  font-size: 0.62rem;
  color: var(--text-3);
  letter-spacing: 0.08em;
  font-family: 'Space Mono', monospace;
  text-transform: uppercase;
}

.header-center { flex: 1; display: flex; justify-content: center; }

.canvas-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Space Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  background: var(--bg3);
  border: 1px solid var(--border);
  padding: 0.35rem 0.9rem;
}

.info-label { color: var(--text-3); }
.info-val   { color: var(--text-1); }
.info-sep   { color: var(--border-2); }

.header-actions { display: flex; gap: 0.4rem; }

/* ---------- Buttons ---------- */
.hbtn {
  font-family: 'Space Mono', monospace;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 0.45rem 0.9rem;
  background: var(--bg3);
  border: 1px solid var(--border-2);
  color: var(--text-2);
  cursor: pointer;
  transition: all 0.12s;
  text-transform: uppercase;
}

.hbtn:hover { border-color: var(--text-2); color: var(--text-1); }
.hbtn:active { transform: scale(0.96); }

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

.hbtn-primary:hover { background: #ff5147; border-color: #ff5147; color: #fff; }

.hbtn-sm { padding: 0.3rem 0.65rem; font-size: 0.62rem; }

/* ---------- App Body ---------- */
.app-body {
  flex: 1;
  display: grid;
  grid-template-columns: var(--toolbar-w) 1fr var(--panel-w);
  overflow: hidden;
}

/* ---------- Toolbar / Right Panel (shared) ---------- */
.toolbar,
.right-panel {
  background: var(--bg2);
  border-right: 2px solid var(--border);
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.right-panel { border-right: none; border-left: 2px solid var(--border); }

.tool-section {
  padding: 0.9rem 0.9rem 0.75rem;
  border-bottom: 1px solid var(--border);
}

.section-label {
  font-family: 'Space Mono', monospace;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--text-3);
  text-transform: uppercase;
  margin-bottom: 0.65rem;
}

/* ---------- Tool buttons ---------- */
.tool-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.35rem;
}

.tool-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  padding: 0.55rem 0.3rem;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text-2);
  cursor: pointer;
  transition: all 0.12s;
  font-family: 'Space Mono', monospace;
  font-size: 0.55rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.tool-btn:hover { border-color: var(--text-2); color: var(--text-1); }

.tool-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ---------- Brush sizes ---------- */
.brush-sizes { display: flex; gap: 0.35rem; }

.brush-btn {
  flex: 1;
  font-family: 'Space Mono', monospace;
  font-size: 0.6rem;
  padding: 0.4rem 0;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text-2);
  cursor: pointer;
  transition: all 0.12s;
  text-align: center;
  letter-spacing: 0.04em;
}

.brush-btn:hover { border-color: var(--text-2); color: var(--text-1); }

.brush-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ---------- Color ---------- */
.color-display {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.color-preview-wrap {
  position: relative;
  width: 52px;
  height: 40px;
  flex-shrink: 0;
}

.color-swatch {
  width: 34px; height: 28px;
  border: 2px solid var(--border-2);
  cursor: pointer;
  position: absolute;
  transition: border-color 0.15s;
}

.primary-swatch {
  bottom: 0; left: 0;
  z-index: 2;
  border-color: var(--text-1);
}

.secondary-swatch {
  top: 0; right: 0;
  z-index: 1;
}

.primary-swatch:hover,
.secondary-swatch:hover { border-color: var(--accent); }

input[type="color"] {
  width: 100%;
  height: 36px;
  border: 1px solid var(--border-2);
  background: var(--bg3);
  cursor: pointer;
  padding: 2px;
  border-radius: 0;
  flex: 1;
}

/* ---------- Palette ---------- */
.palette-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 3px;
  margin-bottom: 0.5rem;
}

.palette-color {
  aspect-ratio: 1;
  cursor: pointer;
  border: 1px solid transparent;
  transition: border-color 0.12s, transform 0.1s;
}

.palette-color:hover {
  border-color: var(--text-1);
  transform: scale(1.15);
  z-index: 2;
  position: relative;
}

.add-color-btn {
  width: 100%;
  font-family: 'Space Mono', monospace;
  font-size: 0.6rem;
  padding: 0.35rem;
  background: transparent;
  border: 1px dashed var(--border-2);
  color: var(--text-3);
  cursor: pointer;
  transition: all 0.12s;
  letter-spacing: 0.06em;
}

.add-color-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- History ---------- */
.history-btns { display: flex; gap: 0.4rem; margin-bottom: 0.5rem; }
.history-btns .hbtn-sm { flex: 1; }

.history-info {
  font-family: 'Space Mono', monospace;
  font-size: 0.6rem;
  color: var(--text-3);
  text-align: center;
}

/* ---------- Canvas Area ---------- */
.canvas-area {
  background: var(--bg);
  overflow: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  cursor: crosshair;

  /* Checkered background to show transparency */
  background-image:
    linear-gradient(45deg, #1e1e1e 25%, transparent 25%),
    linear-gradient(-45deg, #1e1e1e 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #1e1e1e 75%),
    linear-gradient(-45deg, transparent 75%, #1e1e1e 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

.canvas-wrap {
  position: relative;
  line-height: 0;
  box-shadow: 0 0 0 2px var(--border-2), 0 8px 40px rgba(0,0,0,0.6);
}

.canvas-wrap canvas {
  display: block;
  position: absolute;
  top: 0; left: 0;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

#pixel-canvas { position: relative; z-index: 1; }
#overlay-canvas { z-index: 2; pointer-events: none; }
#grid-canvas { z-index: 3; pointer-events: none; }

/* ---------- Size presets ---------- */
.size-presets {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.35rem;
}

.size-btn {
  font-family: 'Space Mono', monospace;
  font-size: 0.6rem;
  padding: 0.4rem 0;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text-2);
  cursor: pointer;
  transition: all 0.12s;
  text-align: center;
  letter-spacing: 0.04em;
}

.size-btn:hover { border-color: var(--text-2); color: var(--text-1); }

.size-btn.active {
  background: var(--accent-2);
  border-color: var(--accent-2);
  color: #111;
  font-weight: 700;
}

/* ---------- Zoom ---------- */
.zoom-btns {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.zoom-val {
  font-family: 'Space Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent-2);
  flex: 1;
  text-align: center;
  letter-spacing: 0.06em;
}

.zoom-range-wrap input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  cursor: pointer;
}

/* ---------- Toggle ---------- */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-2);
  cursor: pointer;
}

.toggle { position: relative; }
.toggle input { opacity: 0; width: 0; height: 0; position: absolute; }

.toggle-slider {
  display: block;
  width: 36px; height: 20px;
  background: var(--bg4);
  border: 1px solid var(--border-2);
  position: relative;
  cursor: pointer;
  transition: background 0.2s;
}

.toggle-slider::after {
  content: '';
  position: absolute;
  top: 2px; left: 2px;
  width: 14px; height: 14px;
  background: var(--text-3);
  transition: transform 0.2s, background 0.2s;
}

.toggle input:checked + .toggle-slider { background: var(--accent); border-color: var(--accent); }
.toggle input:checked + .toggle-slider::after {
  transform: translateX(16px);
  background: #fff;
}

/* ---------- Transform ---------- */
.transform-btns { display: flex; flex-direction: column; gap: 0.35rem; }
.transform-btns .hbtn-sm { width: 100%; text-align: left; }

/* ---------- Preview ---------- */
.preview-wrap {
  background: #111;
  border: 1px solid var(--border-2);
  padding: 4px;
  display: inline-flex;
}

#preview-canvas {
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  display: block;
  width: 100%;
  height: auto;
  max-width: 160px;
}

/* ---------- Shortcuts ---------- */
.shortcut-list {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.shortcut {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.68rem;
  color: var(--text-3);
}

kbd {
  font-family: 'Space Mono', monospace;
  font-size: 0.58rem;
  padding: 0.1rem 0.35rem;
  background: var(--bg4);
  border: 1px solid var(--border-2);
  color: var(--text-2);
  white-space: nowrap;
}

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(4px);
}

.modal-overlay.hidden { display: none; }

.modal {
  background: var(--bg2);
  border: 2px solid var(--border-2);
  padding: 1.5rem;
  width: 280px;
  animation: pop-in 0.2s ease both;
}

@keyframes pop-in {
  from { opacity: 0; transform: scale(0.92); }
  to   { opacity: 1; transform: scale(1); }
}

.modal-title {
  font-family: 'Space Mono', monospace;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.2rem;
  color: var(--text-1);
}

.modal-body { display: flex; flex-direction: column; gap: 0.75rem; margin-bottom: 1.2rem; }

.modal-row {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-family: 'Space Mono', monospace;
  font-size: 0.72rem;
  color: var(--text-2);
}

.modal-row label { width: 50px; }

.modal-row input {
  width: 80px;
  background: var(--bg3);
  border: 1px solid var(--border-2);
  color: var(--text-1);
  font-family: 'Space Mono', monospace;
  font-size: 0.8rem;
  padding: 0.4rem 0.6rem;
  outline: none;
  transition: border-color 0.15s;
}

.modal-row input:focus { border-color: var(--accent); }

.modal-actions { display: flex; gap: 0.5rem; justify-content: flex-end; }

/* ---------- Footer ---------- */
.site-footer {
  height: 34px;
  border-top: 2px solid var(--border);
  background: var(--bg2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.footer-credit {
  font-family: 'Space Mono', monospace;
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
  padding: 0.22rem 0.5rem;
  border: 1px dashed transparent;
  transition: color 0.15s, border-color 0.15s;
}

.site-footer:hover .footer-credit {
  color: var(--accent);
  border-color: var(--border-2);
}

/* ============================================================
   Mobile Responsive — hidden by default, shown on small screens
   ============================================================ */

/* Mobile toolbar: hidden on desktop */
.mobile-toolbar { display: none; }

/* Mobile drawer overlay: hidden always, shown in JS via class toggle */
.mob-drawer-overlay { display: none; }

@media (max-width: 640px) {

  /* ---------- Layout ---------- */
  .site-footer { display: none; }

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

  .toolbar,
  .right-panel { display: none; }

  /* Canvas area fills remaining space; prevent browser scroll+zoom */
  .canvas-area { touch-action: none; }

  /* ---------- Header (compact) ---------- */
  .header { padding: 0 0.75rem; gap: 0.5rem; }
  .header-center { display: none; }
  .brand-sub { display: none; }
  .hbtn { padding: 0.4rem 0.65rem; font-size: 0.62rem; }

  /* ---------- Mobile Bottom Toolbar ---------- */
  .mobile-toolbar {
    display: flex;
    align-items: center;
    height: 58px;
    background: var(--bg2);
    border-top: 2px solid var(--border);
    flex-shrink: 0;
    padding: 0 0.5rem;
    gap: 0.4rem;
    z-index: 50;
  }

  .mob-tools {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    flex: 1;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .mob-tools::-webkit-scrollbar { display: none; }

  .mob-tool-btn {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg3);
    border: 1px solid var(--border);
    color: var(--text-2);
    cursor: pointer;
    transition: all 0.12s;
  }

  .mob-tool-btn:hover  { border-color: var(--text-2); color: var(--text-1); }
  .mob-tool-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

  .mob-actions {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    flex-shrink: 0;
  }

  .mob-color-swatch {
    width: 28px;
    height: 28px;
    border: 2px solid var(--text-1);
    cursor: pointer;
    flex-shrink: 0;
    background: #ff3b30;
  }

  .mob-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg3);
    border: 1px solid var(--border-2);
    color: var(--text-2);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.12s;
    font-family: 'Space Grotesk', sans-serif;
    flex-shrink: 0;
  }

  .mob-btn:hover { border-color: var(--text-2); color: var(--text-1); }

  .mob-menu-btn { font-size: 1rem; }

  /* ---------- Mobile Drawer ---------- */
  .mob-drawer-overlay:not(.hidden) {
    display: flex;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
    z-index: 300;
    align-items: flex-end;
    backdrop-filter: blur(3px);
  }

  .mob-drawer {
    width: 100%;
    max-height: 70vh;
    background: var(--bg2);
    border-top: 2px solid var(--border-2);
    display: flex;
    flex-direction: column;
    animation: slide-up 0.22s ease both;
  }

  @keyframes slide-up {
    from { transform: translateY(100%); }
    to   { transform: translateY(0); }
  }

  .mob-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
  }

  .mob-drawer-title {
    font-family: 'Space Mono', monospace;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-1);
  }

  .mob-drawer-close {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg4);
    border: 1px solid var(--border-2);
    color: var(--text-2);
    cursor: pointer;
    font-size: 0.75rem;
    transition: all 0.12s;
  }

  .mob-drawer-close:hover { border-color: var(--accent); color: var(--accent); }

  .mob-drawer-body {
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
    padding-bottom: 1rem;
  }

  .mob-section {
    padding: 0.85rem 1rem 0.7rem;
    border-bottom: 1px solid var(--border);
  }

  .mob-section .section-label { margin-bottom: 0.65rem; }

  .mob-section .zoom-btns { margin-bottom: 0; }
}