/* Signatures Panel Styles */
.sig-layout {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 24px;
  margin-top: 20px;
}

@media (max-width: 900px) {
  .sig-layout { grid-template-columns: 1fr; }
}

.sig-controls {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sig-demo-area {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.demo-section {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}

.demo-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,0.02);
}

.demo-header h4 {
  margin: 0;
  font-size: 1rem;
}

.demo-hint {
  font-size: 11px;
  color: var(--muted);
  opacity: 0.7;
}

.demo-step {
  padding: 16px;
}

.step-label {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.demo-textarea {
  width: 100%;
  min-height: 80px;
  background: #0a0c0f;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  color: var(--fg);
  font-family: inherit;
  font-size: 14px;
  resize: vertical;
}

.demo-textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.demo-buttons {
  display: flex;
  gap: 10px;
  padding: 0 16px 16px 16px;
  flex-wrap: wrap;
}

.demo-step .code-block {
  margin: 0;
  min-height: 100px;
}

.verify-result {
  margin: 0 16px 16px 16px;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
}

.verify-result.verify-success {
  background: rgba(76, 175, 80, 0.15);
  border: 1px solid rgba(76, 175, 80, 0.3);
  color: #4caf50;
}

.verify-result.verify-fail {
  background: rgba(244, 67, 54, 0.15);
  border: 1px solid rgba(244, 67, 54, 0.3);
  color: #f44336;
}

.demo-tip {
  padding: 14px 16px;
  background: rgba(106, 166, 255, 0.1);
  border: 1px solid rgba(106, 166, 255, 0.2);
  border-radius: 10px;
  font-size: 13px;
  color: var(--muted);
}

.demo-tip strong {
  color: var(--accent);
}

/* Info Card Styles */
.info-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.info-header h3 { margin: 0; }

.badge-rec {
  background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
  color: #fff;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
}

.badge-success {
  background: rgba(34, 197, 94, 0.2);
  color: #22c55e;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
}

.badge-danger {
  background: rgba(239, 68, 68, 0.2);
  color: #ef4444;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
}

/* Size Comparison */
.size-comparison {
  margin-top: 32px;
}

.size-comparison h3 {
  margin: 0 0 8px 0;
}

.sig-size-chart {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 16px;
}

.size-section {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
}

.size-section-header {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  font-weight: 600;
}

.size-section-header.classical { color: #64748b; }
.size-section-header.lattice { color: var(--accent2); }
.size-section-header.hash { color: #22c55e; }

.size-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 0;
}

.size-row.recommended-row {
  background: rgba(34, 197, 94, 0.05);
  margin: 0 -16px;
  padding: 6px 16px;
}

.size-label {
  width: 120px;
  font-size: 13px;
  color: var(--muted);
  text-align: right;
  flex-shrink: 0;
}

.size-bar-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
}

.size-bar {
  height: 22px;
  border-radius: 4px;
  min-width: 4px;
}

.size-classical { background: linear-gradient(90deg, #64748b, #475569); }
.size-lattice { background: linear-gradient(90deg, var(--accent2), rgba(155,140,255,0.6)); }
.size-hash { background: linear-gradient(90deg, #22c55e, rgba(34,197,94,0.6)); }

.size-value {
  font-size: 12px;
  color: var(--muted);
  min-width: 70px;
}

.size-note {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
}

.size-note.warn {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
}

.size-note.safe {
  background: rgba(34, 197, 94, 0.15);
  color: #22c55e;
}

/* Use Case Grid */
.use-case-section {
  margin-top: 32px;
}

.use-case-section h3 {
  margin: 0 0 16px 0;
}

.use-case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.use-case-card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px;
  text-align: center;
}

.use-case-icon {
  font-size: 28px;
  margin-bottom: 8px;
}

.use-case-card h4 {
  margin: 0 0 8px 0;
  font-size: 1rem;
}

.use-case-rec {
  color: var(--accent);
  font-weight: 600;
  font-size: 14px;
  margin: 0 0 6px 0;
}

.use-case-why {
  color: var(--muted);
  font-size: 13px;
  margin: 0;
  line-height: 1.4;
}

/* Examples Section */
.examples-section {
  margin-top: 32px;
}

.examples-section h3 {
  margin: 0 0 12px 0;
}

/* Tips Section */
.tips-section {
  margin-top: 24px;
}

.tip-box {
  padding: 16px;
  border-radius: 10px;
}

.tip-box strong {
  display: block;
  margin-bottom: 8px;
}

.tip-box p {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
}

.tip-warning {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.tip-warning strong {
  color: #ef4444;
}

.tip-warning p {
  color: var(--muted);
}