:root {
  --bg: #08080c;
  --panel: #14141d;
  --panel2: #1b1b26;
  --border: #2a2a3a;
  --text: #ececf4;
  --muted: #8b8b9e;
  --accent: #f97316;
  --accent2: #22d3ee;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--bg);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
}

#canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  image-rendering: pixelated;
  cursor: grab;
}

body.dragging #canvas {
  cursor: grabbing;
}

/* ---------------------------------------------------------------- HUD */

.hud {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  pointer-events: none;
}

.hud > * {
  pointer-events: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.02em;
  background: rgba(8, 8, 12, 0.72);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 16px;
}

.brand-name .dot {
  color: var(--accent);
}

.logo {
  display: grid;
  grid-template-columns: repeat(2, 8px);
  grid-template-rows: repeat(2, 8px);
  gap: 2px;
}

.px {
  border-radius: 2px;
}

.px1 { background: #ffffff; }
.px2 { background: var(--accent2); }
.px3 { background: var(--accent); grid-column: 1 / -1; height: 4px; }

.hud-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.hud-stats {
  font-size: 13px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  background: rgba(8, 8, 12, 0.72);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 14px;
  white-space: nowrap;
}

.menu-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: rgba(8, 8, 12, 0.72);
  backdrop-filter: blur(12px);
  color: var(--text);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.menu-btn:hover {
  background: var(--panel);
  border-color: #3a3a4c;
}

.menu-lines {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.menu-lines i {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.menu-btn[aria-expanded="true"] .menu-lines i:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-btn[aria-expanded="true"] .menu-lines i:nth-child(2) {
  opacity: 0;
}

.menu-btn[aria-expanded="true"] .menu-lines i:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------------------------------------------------------------- zoom */

.zoom-controls {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 30;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.zoom-btn {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(8, 8, 12, 0.72);
  backdrop-filter: blur(12px);
  color: var(--text);
  font-size: 16px;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.zoom-btn:hover {
  background: var(--panel);
  border-color: #3a3a4c;
}

.zoom-btn#btn-reset {
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ---------------------------------------------------------------- hint + tooltip */

.hint {
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  z-index: 20;
  font-size: 12px;
  color: var(--muted);
  background: rgba(8, 8, 12, 0.6);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 16px;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.hint.hidden {
  opacity: 0;
}

.tooltip {
  position: fixed;
  pointer-events: none;
  background: rgba(20, 20, 30, 0.95);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 13px;
  line-height: 1.4;
  max-width: 260px;
  z-index: 25;
}

.tooltip .tt-color {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  vertical-align: middle;
  margin-right: 6px;
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.tooltip .tt-dim {
  color: var(--muted);
}

/* ---------------------------------------------------------------- menu */

.backdrop {
  position: fixed;
  inset: 0;
  z-index: 40;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(2px);
}

.menu {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  width: min(420px, 92vw);
  background: var(--panel);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  transform: translateX(105%);
  transition: transform 0.25s cubic-bezier(0.22, 1, 0.36, 1);
}

.menu.open {
  transform: translateX(0);
}

.menu-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
}

.menu-head h2 {
  margin: 0;
  font-size: 20px;
  letter-spacing: -0.02em;
}

.menu-head h2 .dot {
  color: var(--accent);
}

.menu-close {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}

.menu-close:hover {
  background: var(--panel2);
}

.menu-scroll {
  overflow-y: auto;
  padding: 22px;
}

.menu-lede {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 15px;
}

.menu-lede strong {
  color: var(--text);
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 26px;
}

.stat {
  display: flex;
  flex-direction: column;
  padding: 12px 14px;
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.num {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}

.label {
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 2px;
}

.menu h3 {
  margin: 24px 0 8px;
  font-size: 16px;
  letter-spacing: -0.01em;
}

.menu h3:first-of-type {
  margin-top: 0;
}

.menu-copy {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 14px;
}

.menu-copy strong {
  color: var(--text);
}

code {
  font-family: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
}

.menu-copy code {
  color: #7ee787;
  font-size: 13px;
}

.code {
  background: #0d0d14;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  overflow-x: auto;
  font-size: 12.5px;
  line-height: 1.55;
  margin: 0 0 4px;
}

.code code {
  color: #7ee787;
}

.prompt-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.prompt-card label {
  font-size: 12px;
  color: var(--muted);
  margin-top: 8px;
}

.prompt-card input,
.prompt-card textarea {
  background: #0d0d14;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  padding: 12px 14px;
  font-size: 13px;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  resize: vertical;
}

.prompt-card textarea {
  line-height: 1.5;
}

.prompt-card input:focus,
.prompt-card textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.btn {
  display: inline-block;
  padding: 12px 20px;
  border-radius: 10px;
  border: 1px solid var(--border);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  background: var(--panel2);
  color: var(--text);
  transition: background 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #1a0e02;
}

.btn-primary:hover {
  background: #fb8325;
  border-color: #fb8325;
}

#btn-copy {
  align-self: flex-start;
  margin-top: 6px;
}

.copy-note {
  color: #7ee787;
  font-size: 13px;
  min-height: 18px;
}

@media (max-width: 520px) {
  .hud-stats {
    display: none;
  }

  .brand-name {
    display: none;
  }
}