:root {
  --bg: radial-gradient(circle at 20% 20%, rgba(90, 115, 255, 0.08), transparent 35%), radial-gradient(circle at 80% 0%, rgba(255, 166, 43, 0.15), transparent 30%), #0f172a;
  --surface: #0b1224;
  --panel: rgba(255, 255, 255, 0.06);
  --primary: #3a7bff;
  --primary-strong: #2b6eff;
  --muted: #c5d2ff;
  --text: #eaf0ff;
  --shadow: 0 20px 70px rgba(0, 0, 0, 0.5);
  --radius: 18px;
}

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

body {
  margin: 0;
  min-height: 100vh;
  padding: 24px;
  font-family: "Space Grotesk", "Avenir Next", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
}

h1 {
  font-weight: 600;
  font-size: clamp(28px, 4vw, 40px);
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 11px;
  color: var(--muted);
  margin: 0 0 8px;
}

.lede {
  margin: 0;
  color: #d8e0ff;
  max-width: 560px;
}

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  align-items: center;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 28px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.panel {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 16px;
  border-radius: var(--radius);
  display: grid;
  gap: 12px;
}

.control {
  display: grid;
  gap: 6px;
  align-items: center;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 8px;
}

.tool {
  width: 100%;
  border-radius: 10px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: var(--text);
  text-align: left;
  font-weight: 600;
}

.tool.active {
  background: linear-gradient(135deg, rgba(58, 123, 255, 0.15), rgba(58, 123, 255, 0.05));
  border-color: rgba(58, 123, 255, 0.5);
  box-shadow: 0 10px 30px rgba(58, 123, 255, 0.25);
}

.background-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
}

.layer-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 8px;
  margin-bottom: 8px;
}

.layer-list {
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  padding: 8px;
  display: grid;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  max-height: 400px;
  overflow: auto;
}

.layer-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 8px 10px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  cursor: pointer;
}

.layer-row.active {
  background: linear-gradient(135deg, rgba(58, 123, 255, 0.12), rgba(58, 123, 255, 0.04));
  border-color: rgba(58, 123, 255, 0.5);
}

.layer-row .name {
  font-weight: 600;
}

.layer-row .controls {
  display: flex;
  gap: 8px;
}

.layer-row .mini-btn {
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 12px;
}

.layer-row .hint {
  color: var(--muted);
  font-size: 12px;
}

.zoom-controls .hint {
  margin-left: 4px;
}

.control label {
  font-size: 13px;
  color: #dfe6ff;
}

.control .hint {
  font-size: 12px;
  color: var(--muted);
}

.control.inline {
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

input[type="color"],
input[type="range"] {
  width: 100%;
}

input[type="color"] {
  background: #0d1528;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  height: 42px;
  cursor: pointer;
}

input[type="range"] {
  accent-color: var(--primary);
  cursor: pointer;
}

button {
  border: none;
  border-radius: 999px;
  padding: 12px 16px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.2s ease, background 0.2s ease, border 0.2s ease;
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

button:hover {
  transform: translateY(-1px);
}

.danger {
  color: #ffb7b7;
  border-color: rgba(255, 112, 112, 0.2);
}

.primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  box-shadow: 0 12px 30px rgba(58, 123, 255, 0.3);
  color: #f8fbff;
}

.ghost {
  background: rgba(255, 255, 255, 0.06);
}

.workspace {
  margin-top: 0;
}

.canvas-shell {
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.01));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 18px;
  min-height: 420px;
  box-shadow: var(--shadow);
  max-width: 100%;
}

.canvas-toolbar {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 10px;
}

.zoom-controls {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 8px 10px;
}

.zoom-controls input[type="range"] {
  width: 140px;
}

.zoom-controls .mini {
  padding: 8px 10px;
}

.canvas-viewport {
  position: relative;
  overflow: auto;
  min-height: min(70vh, 720px);
  border-radius: 12px;
  background: #fff;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.05);
  width: 100%;
  max-width: 100%;
}

canvas {
  width: var(--workspace-size, 3200px);
  height: var(--workspace-size, 3200px);
  display: block;
  touch-action: none;
}

.canvas-viewport.panning-ready {
  cursor: grab;
}

.canvas-viewport.panning {
  cursor: grabbing;
}

.footer {
  margin-top: 14px;
  color: var(--muted);
  font-size: 13px;
}

.workspace-grid {
  margin-top: 24px;
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  max-width: 100%;
  overflow-x: hidden;
}

.layers-panel {
  position: sticky;
  top: 16px;
  max-width: 100%;
}

@media (max-width: 720px) {
  body {
    padding: 16px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .control.inline {
    grid-template-columns: 1fr;
  }

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

  .layers-panel {
    position: static;
  }

  .canvas-viewport {
    min-height: 60vh;
  }
}