/* ── Hero Tools Showcase ─────────────────────────────────────── */

.hero-tools {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

.hero-tool-card {
  background: white;
  padding: 0;
  border-radius: 12px;
  border: 1px solid var(--clr-border);
  box-shadow: 0 4px 12px rgba(40, 60, 89, 0.08);
  overflow: hidden;
}

/* Scratchpad */
.hero-scratchpad .scratchpad-wrap {
  padding: 16px;
}

.hero-scratchpad .scratchpad-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  gap: 12px;
}

.hero-scratchpad .scratch-tools {
  display: flex;
  gap: 8px;
}

.hero-scratchpad .scratch-tool {
  width: 32px;
  height: 32px;
  padding: 6px;
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.hero-scratchpad .scratch-tool:hover {
  background: var(--clr-primary-50);
  border-color: var(--clr-primary);
}

.hero-scratchpad .scratch-tool.is-on {
  background: var(--clr-primary);
  border-color: var(--clr-primary);
  color: white;
}

.hero-scratchpad .scratch-colors {
  display: flex;
  gap: 6px;
}

.hero-scratchpad .scratch-color {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  background: var(--c);
  transition: all 0.2s ease;
}

.hero-scratchpad .scratch-color:hover {
  border-color: var(--clr-primary);
  transform: scale(1.1);
}

.hero-scratchpad .scratch-color.is-on {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(39, 61, 89, 0.1);
}

.hero-scratchpad .scratch-right {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.hero-scratchpad .scratchpad {
  width: 100%;
  height: 220px;
  background: #f5f7fa;
  border: 1px solid var(--clr-border);
  border-radius: 8px;
  display: block;
  margin-bottom: 8px;
}

.hero-scratchpad .scratchpad-hint {
  font-size: 12px;
  text-align: center;
  color: var(--clr-text-muted);
}

/* Calculator */
.hero-calculator .calc-wrap {
  padding: 16px;
}

.hero-calculator .calc-preview {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hero-calculator .calc {
  background: white;
  border: 1px solid var(--clr-border);
  border-radius: 8px;
  padding: 12px;
}

.hero-calculator .calc-display {
  background: #f5f7fa;
  border-radius: 6px;
  padding: 12px;
  text-align: right;
  margin-bottom: 12px;
}

.hero-calculator .calc-sub {
  font-size: 11px;
  color: var(--clr-text-muted);
  margin-bottom: 4px;
}

.hero-calculator .calc-main {
  font-size: 20px;
  font-weight: 600;
  color: var(--clr-primary);
  font-family: 'JetBrains Mono', monospace;
}

.hero-calculator .calc-keys {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.hero-calculator .calc-k {
  padding: 8px;
  border: 1px solid var(--clr-border);
  background: white;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 500;
  font-size: 13px;
  transition: all 0.15s ease;
}

.hero-calculator .calc-k:hover {
  background: var(--clr-bg);
  border-color: var(--clr-primary);
}

.hero-calculator .calc-k-op {
  background: var(--clr-primary-50);
  color: var(--clr-primary);
}

.hero-calculator .calc-k-op.calc-k-act {
  background: var(--clr-primary);
  color: white;
  border-color: var(--clr-primary);
}

.hero-calculator .calc-k-eq {
  background: var(--clr-primary);
  color: white;
  border-color: var(--clr-primary);
  font-weight: 600;
}

.hero-calculator .calc-k-wide {
  grid-column: span 2;
}

.hero-calculator .calc-meta {
  padding: 12px;
  background: #f5f7fa;
  border-radius: 6px;
  border: 1px solid var(--clr-border);
}

.hero-calculator .calc-meta h4 {
  margin: 0 0 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--clr-primary);
}

.hero-calculator .calc-meta p {
  margin: 0 0 8px;
  font-size: 12px;
  color: var(--clr-text-muted);
}

.hero-calculator .calc-feats {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 11px;
}

.hero-calculator .calc-feats li {
  display: flex;
  gap: 6px;
  align-items: center;
  color: var(--clr-text-muted);
  margin-bottom: 4px;
}

.hero-calculator .kbd {
  display: inline-block;
  background: white;
  border: 1px solid var(--clr-border);
  padding: 2px 6px;
  border-radius: 3px;
  font-family: monospace;
  font-size: 10px;
  font-weight: 600;
  color: var(--clr-primary);
}

/* Authenticity Badge */
.hero-authenticity {
  grid-column: 1 / -1;
  padding: 16px;
  background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 100%);
  border: 1px solid #bbf7d0;
  border-radius: 8px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--clr-success);
  font-size: 13px;
  font-weight: 500;
}

.hero-authenticity strong {
  color: var(--clr-success);
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-tools {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .hero-authenticity {
    grid-column: 1;
  }

  .hero-scratchpad .scratchpad {
    height: 180px;
  }
}

@media (max-width: 768px) {
  .hero-tools {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .hero-scratchpad .scratchpad-toolbar {
    flex-wrap: wrap;
  }

  .hero-calculator .calc-keys {
    grid-template-columns: repeat(4, 1fr);
  }
}