* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, "Segoe UI", system-ui, -apple-system, sans-serif;
  color: #e2e8f0;
  background:
    radial-gradient(circle at top, rgba(56, 189, 248, 0.2), transparent 42%),
    linear-gradient(180deg, #0f172a 0%, #0f172a 100%);
}

.tutorial {
  width: min(1100px, 94vw);
  margin: 0 auto;
  padding: 28px 0 40px;
}

.hero h1 {
  margin: 0;
  font-size: clamp(1.8rem, 2.6vw, 2.7rem);
  line-height: 1.15;
}

.hero p {
  margin: 12px 0 16px;
  color: #cbd5e1;
}

.back-link {
  display: inline-flex;
  text-decoration: none;
  color: #bfdbfe;
  border: 1px solid rgba(96, 165, 250, 0.45);
  border-radius: 999px;
  padding: 8px 12px;
  background: rgba(30, 64, 175, 0.25);
}

.back-link:hover {
  background: rgba(37, 99, 235, 0.35);
}

.step {
  margin-top: 22px;
  border: 1px solid rgba(71, 85, 105, 0.8);
  border-radius: 14px;
  background: rgba(15, 23, 42, 0.72);
  padding: 16px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 16px;
  align-items: start;
}

.step h2,
.tips h2 {
  margin: 0 0 10px;
  font-size: 1.1rem;
}

.step ul,
.step ol,
.tips ul {
  margin: 0;
  padding-left: 20px;
  color: #cbd5e1;
}

.step li,
.tips li {
  margin: 8px 0;
}

.inline-shortcuts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1rem;
  margin: 10px 0 0;
  padding: 8px 10px;
  background: rgba(30, 41, 59, 0.5);
  border-radius: 8px;
  font-size: 12px;
  color: #94a3b8;
}

.inline-shortcuts dt {
  margin: 0;
  font-weight: 600;
  color: #cbd5e1;
  display: inline;
}

.inline-shortcuts dd {
  margin: 0 1rem 0 0.4rem;
  display: inline;
}

.inline-shortcuts kbd {
  display: inline-block;
  padding: 1px 5px;
  font-size: 11px;
  font-family: inherit;
  background: rgba(71, 85, 105, 0.6);
  border: 1px solid rgba(100, 116, 139, 0.5);
  border-radius: 4px;
}

.step-note {
  margin: 10px 0 0;
  font-size: 0.85rem;
  color: #94a3b8;
  font-style: italic;
}

.step-note a {
  color: #93c5fd;
}

.shot {
  margin: 0;
}

.shot img {
  width: 100%;
  border-radius: 10px;
  border: 1px solid rgba(100, 116, 139, 0.7);
  display: block;
  background: #0f172a;
}

.shot figcaption {
  margin-top: 8px;
  font-size: 12px;
  color: #94a3b8;
}

.shot-stacked img + figcaption {
  margin-bottom: 12px;
}

.shot-secondary {
  margin-top: 4px;
}

/* Annotated draw controls (Step 4) */
.shot-annotated {
  position: relative;
  padding: 24px 16px;
  background: rgba(15, 23, 42, 0.6);
  border-radius: 10px;
  border: 1px solid rgba(100, 116, 139, 0.7);
}

.draw-controls-mockup {
  display: inline-flex;
  align-items: flex-end;
  gap: 7px;
  padding: 5px 8px;
  border: 1px solid rgba(71, 85, 105, 0.45);
  border-radius: 10px;
  background: rgba(15, 23, 42, 0.45);
}

.control-with-annotation {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.draw-controls-mockup button {
  min-height: 32px;
  padding: 7px 10px;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid rgba(100, 116, 139, 0.65);
  border-radius: 8px;
  background: rgba(30, 41, 59, 0.88);
  color: #e2e8f0;
  cursor: default;
}

.draw-controls-mockup button.active {
  background: rgba(14, 165, 233, 0.38);
  border-color: rgba(125, 211, 252, 0.8);
  color: #e0f2fe;
  box-shadow: inset 0 0 0 1px rgba(224, 242, 254, 0.2);
}

.draw-controls-mockup button kbd {
  font-size: 9px;
  padding: 1px 3px;
  margin-left: 2px;
  border: 1px solid rgba(226, 232, 240, 0.6);
  border-radius: 3px;
  background: rgba(148, 163, 184, 0.35);
}

.draw-controls-mockup .color-swatch {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid #64748b;
  overflow: hidden;
  background: rgba(15, 23, 42, 0.35);
  cursor: default;
}

.draw-controls-mockup .color-swatch .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.draw-controls-mockup .color-swatch input {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
}

.draw-controls-mockup .brush-slider input {
  width: 76px;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: #334155;
  border-radius: 2px;
  cursor: default;
}

.draw-controls-mockup .brush-slider input::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid #94a3b8;
}

.draw-controls-mockup .brush-slider input::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid #94a3b8;
}

.annotation {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  font-size: 11px;
  font-weight: 700;
  color: #0f172a;
  background: #fbbf24;
  border: 2px solid #f59e0b;
  border-radius: 50%;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
  flex-shrink: 0;
}

.annotation-legend {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.25rem 0.75rem;
  margin: 14px 0 0;
  padding: 10px 12px;
  background: rgba(15, 23, 42, 0.5);
  border-radius: 8px;
  font-size: 12px;
  color: #cbd5e1;
}

.annotation-legend dt {
  font-weight: 700;
  color: #fbbf24;
  margin: 0;
}

.annotation-legend dd {
  margin: 0;
}

.annotation-legend kbd {
  font-size: 10px;
  padding: 1px 4px;
  background: rgba(71, 85, 105, 0.6);
  border-radius: 4px;
}

@media (max-width: 600px) {
  .draw-controls-mockup { flex-wrap: wrap; }
}

.shortcuts {
  margin-top: 28px;
  border: 1px solid rgba(71, 85, 105, 0.8);
  border-radius: 14px;
  background: rgba(15, 23, 42, 0.72);
  padding: 16px;
}

.shortcuts h2 {
  margin: 0 0 12px;
  font-size: 1.1rem;
}

.shortcut-list {
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.5rem 1.5rem;
  align-items: baseline;
}

.shortcut-list dt {
  margin: 0;
  font-weight: 500;
}

.shortcut-list kbd {
  display: inline-block;
  padding: 2px 8px;
  font-size: 0.85rem;
  font-family: inherit;
  background: rgba(71, 85, 105, 0.6);
  border: 1px solid rgba(100, 116, 139, 0.5);
  border-radius: 6px;
}

.shortcut-list dd {
  margin: 0;
  color: #cbd5e1;
}

.tips {
  margin-top: 22px;
  border: 1px solid rgba(234, 179, 8, 0.35);
  border-radius: 14px;
  background: rgba(113, 63, 18, 0.18);
  padding: 14px 16px;
}

@media (max-width: 860px) {
  .step {
    grid-template-columns: 1fr;
  }
}