:root {
  --bg-main: #0a0e17;
  --bg-card: #121826;
  --bg-card-hover: #182235;
  --bg-input: #0d1320;
  --border-color: #222f47;
  --border-focus: #3b82f6;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-sub: #cbd5e1;
  --accent: #10b981;
  --accent-hover: #059669;
  --btn-secondary: #1e293b;
  --btn-secondary-hover: #334155;
  --danger: #ef4444;
  --danger-bg: #450a0a;
}

.kb-wrapper {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  padding: 20px 10px;
  border-radius: 16px;
  box-sizing: border-box;
}

.kb-wrapper *, .kb-wrapper *::before, .kb-wrapper *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.kb-container {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
}

.kb-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 20px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}

.kb-logo-container {
  display: flex;
  align-items: center;
  gap: 12px;
}

.kb-logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: #10b981;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #041f17;
  font-weight: 800;
  font-size: 20px;
}

.kb-brand-name {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
}

.kb-badge {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  background: #1e293b;
  color: #38bdf8;
  padding: 4px 10px;
  border-radius: 20px;
  border: 1px solid #334155;
}

.kb-hero {
  text-align: center;
  margin-bottom: 30px;
}

.kb-headline {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 10px;
  color: #ffffff;
}

.kb-subheading {
  font-size: clamp(14px, 2vw, 16px);
  color: var(--text-muted);
}

.kb-input-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 24px;
}

.kb-textarea-wrapper {
  margin-bottom: 16px;
}

.kb-textarea {
  width: 100%;
  min-height: 130px;
  background: var(--bg-input);
  border: 1.5px solid var(--border-color);
  border-radius: 12px;
  padding: 16px;
  color: var(--text-main);
  font-family: inherit;
  font-size: 16px;
  resize: vertical;
}

.kb-textarea:focus {
  outline: none;
  border-color: var(--border-focus);
}

.kb-controls-row {
  display: flex;
  justify-content: flex-end;
}

.kb-btn-primary {
  background: var(--accent);
  color: #041f17;
  border: none;
  border-radius: 10px;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.kb-btn-primary:hover {
  background: var(--accent-hover);
}

.kb-btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.kb-examples-section {
  margin-top: 20px;
}

.kb-examples-label {
  font-size: 11px;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 8px;
  display: block;
}

.kb-examples-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 8px;
}

.kb-example-btn {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--text-sub);
  font-size: 13px;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.kb-example-btn:hover {
  background: var(--bg-card-hover);
  border-color: #3b82f6;
  color: #ffffff;
}

.kb-status-card, .kb-error-card, .kb-result-card {
  display: none;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 24px;
}

.kb-status-card {
  text-align: center;
}

.kb-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid #1e293b;
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: kb-spin 0.8s linear infinite;
  margin: 0 auto 12px;
}

@keyframes kb-spin {
  to { transform: rotate(360deg); }
}

.kb-error-card {
  background: var(--danger-bg);
  border-color: var(--danger);
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.kb-error-text {
  color: #fecaca;
  font-size: 14px;
}

.kb-btn-retry {
  background: #ffffff;
  color: #991b1b;
  border: none;
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}

.kb-result-header {
  padding-bottom: 12px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--border-color);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
}

.kb-result-content {
  font-size: 15px;
  line-height: 1.7;
  color: #f1f5f9;
  white-space: pre-wrap;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}

.kb-actions-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.kb-action-btn {
  background: var(--btn-secondary);
  color: var(--text-main);
  border: 1px solid #334155;
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.kb-action-btn:hover {
  background: var(--btn-secondary-hover);
}

.kb-action-btn.kb-copy-btn {
  background: #0f3d2e;
  color: #6ee7b7;
  border-color: #10b981;
}

.kb-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #10b981;
  color: #041f17;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 13px;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.2s, transform 0.2s;
  pointer-events: none;
  z-index: 99999;
}

.kb-toast.show {
  opacity: 1;
  transform: translateY(0);
}