/* ==========================================================================
   Advanced Interactive Features CSS
   Inspired by award-winning sankar.work portfolio architecture:
   - Command Palette (Ctrl+K / ⌘K)
   - Client-Side AI Twin Assistant Console
   - Interactive Engineering Lifecycle Explorer
   - Before / After Architecture & Impact Transformation Showcase
   - "You Be The AI Engineer" Scenario Decision Challenge
   - Intent-Based Interactive Contact Selector & Live Time Capsule
   ========================================================================== */

/* 1. Header Search Button */
.header-search-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--text-muted);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.header-search-btn:hover {
  background: var(--surface-hover);
  border-color: var(--blue);
  color: var(--text);
  box-shadow: 0 0 10px var(--blue-glow);
}

.header-search-btn kbd {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--line);
  padding: 2px 5px;
  border-radius: 4px;
  font-family: "DM Mono", monospace;
  font-size: 10px;
  color: var(--text-subtle);
}

/* 2. Global Command Palette (Ctrl+K / ⌘K) */
.cmd-palette-backdrop {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(7, 9, 19, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: 80px 20px 40px;
  animation: cmdFadeIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.cmd-palette-backdrop.open {
  display: flex;
}

.cmd-palette-backdrop[hidden] {
  display: none !important;
}

@keyframes cmdFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.cmd-palette-modal {
  width: 100%;
  max-width: 680px;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.8), 0 0 0 1px var(--line);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: cmdSlideDown 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes cmdSlideDown {
  from { opacity: 0; transform: translateY(-16px) scale(0.98); }
  to { opacity: 1; transform: translateY(0); }
}

.cmd-search-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-card);
}

.cmd-search-bar svg {
  color: var(--blue);
  flex-shrink: 0;
}

.cmd-search-input {
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: inherit;
  font-size: 16px;
  font-weight: 500;
}

.cmd-search-input::placeholder {
  color: var(--text-subtle);
}

.cmd-close-kbd {
  font-family: "DM Mono", monospace;
  font-size: 11px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--line);
  padding: 3px 6px;
  border-radius: 4px;
  color: var(--text-subtle);
}

.cmd-results-list {
  max-height: 400px;
  overflow-y: auto;
  padding: 8px;
}

.cmd-results-group-label {
  font-family: "DM Mono", monospace;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-subtle);
  letter-spacing: 0.08em;
  padding: 8px 12px 4px;
}

.cmd-result-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.15s ease;
}

.cmd-result-item:hover,
.cmd-result-item.active {
  background: var(--surface-hover);
  color: var(--blue);
  padding-left: 18px;
}

.cmd-item-title-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.cmd-item-icon {
  font-size: 14px;
}

.cmd-item-title {
  font-size: 14px;
  font-weight: 600;
}

.cmd-item-tag {
  font-family: "DM Mono", monospace;
  font-size: 10px;
  padding: 2px 7px;
  background: rgba(56, 189, 248, 0.1);
  color: var(--blue);
  border-radius: var(--radius-full);
}

.cmd-footer {
  padding: 10px 20px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-subtle);
  background: var(--surface-card);
}

.cmd-footer-keys {
  display: flex;
  gap: 12px;
}

.cmd-footer-keys span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* 3. Hero Status Row & Live Time Capsule */
.hero-status-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.live-clock-capsule {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-full);
  font-family: "DM Mono", monospace;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
}

.live-clock-capsule .clock-pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
  animation: clockPulseAnim 2s infinite ease-in-out;
}

@keyframes clockPulseAnim {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.live-clock-capsule .clock-icon {
  font-size: 11px;
}

/* 4. Client-Side AI Twin Assistant Console */
.ai-twin-section {
  position: relative;
  margin-top: 20px;
}

.ai-twin-card {
  background: var(--surface-card);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  position: relative;
}

.ai-twin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
  gap: 12px;
}

.ai-twin-profile {
  display: flex;
  align-items: center;
  gap: 14px;
}

.ai-twin-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--blue);
  object-fit: cover;
  box-shadow: 0 0 14px var(--blue-glow);
}

.ai-twin-info h4 {
  font-size: 16px;
  font-weight: 700;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}

.ai-twin-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  background: rgba(16, 185, 129, 0.12);
  color: var(--green);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-full);
  font-family: "DM Mono", monospace;
  font-size: 10px;
  font-weight: 600;
}

.ai-twin-badge .status-dot {
  width: 6px;
  height: 6px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--green);
}

.ai-twin-status-sub {
  font-family: "DM Mono", monospace;
  font-size: 11px;
  color: var(--text-subtle);
  margin-top: 2px;
}

.ai-twin-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.ai-twin-clear-btn,
.ai-twin-info-btn {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text-subtle);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-family: "DM Mono", monospace;
  font-size: 11px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.ai-twin-clear-btn:hover,
.ai-twin-info-btn:hover {
  background: var(--surface-hover);
  color: var(--text);
  border-color: var(--line-strong);
}

.ai-twin-info-panel {
  padding: 16px 24px;
  background: rgba(56, 189, 248, 0.05);
  border-bottom: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.55;
  transition: all 0.2s ease;
}

.ai-twin-info-panel.is-hidden {
  display: none;
}

.ai-twin-info-panel h5 {
  color: var(--blue);
  font-size: 11px;
  margin: 0 0 6px 0;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: "DM Mono", monospace;
}

.ai-twin-info-panel p {
  margin: 0;
}

.ai-twin-chat-window {
  min-height: 280px;
  max-height: 440px;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  background: radial-gradient(circle at 50% 0%, rgba(56, 189, 248, 0.04) 0%, transparent 60%);
}

.ai-msg {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  max-width: 88%;
  animation: msgSlideIn 0.2s ease-out;
}

@keyframes msgSlideIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.ai-msg-bot {
  align-self: flex-start;
}

.ai-msg-user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.ai-msg .ai-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  flex-shrink: 0;
  background: var(--surface);
  border: 1px solid var(--line);
}

.ai-msg-bot .ai-avatar {
  color: var(--blue);
  border-color: var(--blue-glow);
}

.ai-msg-user .ai-avatar {
  background: var(--blue);
  color: #070913;
  border-color: var(--blue);
}

.ai-bubble {
  padding: 14px 18px;
  border-radius: var(--radius-md);
  font-size: 14px;
  line-height: 1.6;
}

.ai-msg-bot .ai-bubble {
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--text);
  border-top-left-radius: 2px;
}

.ai-msg-bot .ai-bubble p {
  margin: 0 0 10px;
}

.ai-msg-bot .ai-bubble p:last-child {
  margin: 0;
}

.ai-msg-bot .ai-bubble ul,
.ai-msg-bot .ai-bubble ol {
  margin: 8px 0 12px 18px;
  padding: 0;
}

.ai-msg-bot .ai-bubble li {
  margin-bottom: 6px;
}

.ai-msg-bot .ai-bubble strong {
  color: var(--blue);
}

.ai-msg-bot .ai-bubble code {
  font-family: "DM Mono", monospace;
  font-size: 12px;
  padding: 2px 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  color: var(--cyan);
}

.ai-twin-link {
  color: var(--cyan);
  text-decoration: underline;
  font-weight: 600;
  display: inline-block;
  margin-top: 4px;
}

.ai-twin-link:hover {
  color: var(--blue);
}

.ai-msg-user .ai-bubble {
  background: var(--blue);
  color: #070913;
  font-weight: 600;
  border-top-right-radius: 2px;
}

/* Response Markdown Formatting */
.ai-response-content h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  margin: 4px 0 10px;
}

.ai-response-content h5 {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--blue);
  margin: 12px 0 6px;
}

.ai-response-content blockquote {
  margin: 10px 0;
  padding: 8px 14px;
  border-left: 3px solid var(--blue);
  background: rgba(56, 189, 248, 0.06);
  font-size: 13px;
  color: var(--text-muted);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* Comparison Table */
.ai-table-wrap {
  overflow-x: auto;
  margin: 14px 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-card);
}

.ai-compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  text-align: left;
}

.ai-compare-table th,
.ai-compare-table td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.ai-compare-table th {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  font-weight: 700;
}

.ai-compare-table tr:last-child td {
  border-bottom: none;
}

.ai-compare-table strong {
  color: var(--blue);
}

/* Response Footer (Stat & Copy Button) */
.ai-response-footer {
  margin-top: 14px;
  padding-top: 10px;
  border-top: 1px solid var(--line-faint);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.ai-retrieval-stat {
  font-family: "DM Mono", monospace;
  font-size: 10.5px;
  color: var(--text-subtle);
}

.ai-copy-btn {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text-subtle);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-family: "DM Mono", monospace;
  font-size: 11px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all 0.2s ease;
}

.ai-copy-btn:hover {
  background: var(--surface-hover);
  color: var(--text);
  border-color: var(--line-strong);
}

.ai-copy-btn.copied {
  border-color: var(--green);
  color: var(--green);
  background: rgba(16, 185, 129, 0.1);
}

/* Dynamic Follow-up Chips */
.ai-followup-chips {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--line-faint);
}

.ai-followup-label {
  font-size: 10.5px;
  color: var(--text-subtle);
  font-weight: 600;
  display: block;
  margin-bottom: 6px;
  font-family: "DM Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.ai-followup-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.ai-followup-chip {
  background: var(--surface-card);
  border: 1px solid var(--line);
  color: var(--text-muted);
  padding: 5px 11px;
  border-radius: var(--radius-full);
  font-size: 11px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
  text-align: left;
}

.ai-followup-chip:hover {
  border-color: var(--cyan);
  color: var(--text);
  background: rgba(56, 189, 248, 0.08);
  transform: translateY(-1px);
}

/* Typing Indicator */
.ai-typing-indicator .ai-bubble {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 12px 18px;
}

.ai-typing-indicator .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-subtle);
  animation: typingBounce 1.4s infinite ease-in-out both;
}

.ai-typing-indicator .dot:nth-child(1) { animation-delay: -0.32s; }
.ai-typing-indicator .dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes typingBounce {
  0%, 80%, 100% { transform: scale(0); opacity: 0.3; }
  40% { transform: scale(1); opacity: 1; }
}

/* Suggestion Chips */
.ai-twin-starters {
  padding: 14px 24px;
  border-top: 1px solid var(--line-faint);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  background: var(--surface-card);
}

.ai-twin-chip {
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--text-muted);
  padding: 7px 13px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-family: inherit;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.ai-twin-chip:hover {
  border-color: var(--blue);
  color: var(--text);
  background: var(--surface-hover);
  transform: translateY(-1px);
}

/* Input Bar */
.ai-twin-input-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 24px;
  background: var(--surface);
  border-top: 1px solid var(--line);
}

.ai-twin-input {
  flex-grow: 1;
  background: var(--surface-card);
  border: 1px solid var(--line);
  color: var(--text);
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s ease;
}

.ai-twin-input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 2px var(--blue-glow);
}

.ai-twin-send-btn {
  background: var(--blue);
  color: #070913;
  border: none;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.ai-twin-send-btn:hover:not(:disabled) {
  opacity: 0.92;
  box-shadow: 0 0 16px var(--blue-glow);
}

.ai-twin-send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.ai-twin-disclaimer {
  font-size: 11px;
  color: var(--text-subtle);
  padding: 8px 24px 12px;
  text-align: center;
  background: var(--surface);
}

/* 5. Interactive Engineering Lifecycle Pipeline */
.lifecycle-wrapper {
  margin-top: 32px;
  background: var(--surface-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.lifecycle-stages-bar {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 18px;
}

.lifecycle-tab-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 12px 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  color: var(--text-subtle);
  cursor: pointer;
  text-align: left;
  transition: all 0.2s ease;
}

.lifecycle-tab-btn:hover {
  background: var(--surface-hover);
  border-color: var(--line-strong);
  color: var(--text);
}

.lifecycle-tab-btn.active {
  background: var(--surface-elevated);
  border-color: var(--blue);
  color: var(--text);
  box-shadow: 0 0 14px var(--blue-glow);
}

.lifecycle-tab-btn .step-num {
  font-family: "DM Mono", monospace;
  font-size: 11px;
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 4px;
}

.lifecycle-tab-btn .step-label {
  font-size: 12px;
  font-weight: 700;
  line-height: 1.3;
}

.lifecycle-detail-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 24px;
  animation: fadeIn 0.3s ease;
}

.fade-in {
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.lifecycle-card-header {
  margin-bottom: 20px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 16px;
}

.lifecycle-step-tag {
  font-family: "DM Mono", monospace;
  font-size: 11px;
  color: var(--blue);
  letter-spacing: 0.08em;
  font-weight: 600;
  margin-bottom: 6px;
}

.lifecycle-stage-title {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--text);
}

.lifecycle-stage-sub {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

.lifecycle-block-heading {
  font-family: "DM Mono", monospace;
  font-size: 12px;
  text-transform: uppercase;
  color: var(--text-subtle);
  letter-spacing: 0.05em;
  margin: 0 0 12px;
}

.lifecycle-deliverables-list {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.lifecycle-deliverables-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text);
  line-height: 1.5;
}

.bullet-check {
  color: var(--green);
  font-weight: 700;
  flex-shrink: 0;
}

.lifecycle-meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  background: var(--surface-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
}

.lifecycle-meta-item .meta-label {
  display: block;
  font-family: "DM Mono", monospace;
  font-size: 10px;
  color: var(--text-subtle);
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.lifecycle-meta-item .meta-value {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

.meta-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.meta-tag {
  font-family: "DM Mono", monospace;
  font-size: 11px;
  padding: 2px 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
  border-radius: var(--radius-full);
  color: var(--text);
}

/* 6. Before / After Architecture & Impact Showcase */
.impact-showcase-wrap {
  margin-top: 32px;
  background: var(--surface-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.impact-tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 16px;
  overflow-x: auto;
}

.impact-tab-btn {
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--text-muted);
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.impact-tab-btn:hover {
  color: var(--text);
  border-color: var(--line-strong);
}

.impact-tab-btn.active {
  background: var(--blue);
  color: #070913;
  border-color: var(--blue);
  box-shadow: 0 0 12px var(--blue-glow);
}

.impact-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.impact-headline-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.impact-badge {
  font-family: "DM Mono", monospace;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  background: rgba(56, 189, 248, 0.12);
  color: var(--blue);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: var(--radius-sm);
}

.impact-headline {
  font-size: 18px;
  font-weight: 700;
  margin: 0;
  color: var(--text);
}

.impact-case-link {
  color: var(--cyan);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
}

.impact-case-link:hover {
  text-decoration: underline;
  color: var(--blue);
}

.impact-columns-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}

.impact-column {
  padding: 22px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
}

.impact-column.impact-before {
  background: rgba(239, 68, 68, 0.04);
  border-color: rgba(239, 68, 68, 0.25);
}

.impact-column.impact-after {
  background: rgba(16, 185, 129, 0.04);
  border-color: rgba(16, 185, 129, 0.3);
}

.impact-column-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.status-pill {
  font-family: "DM Mono", monospace;
  font-size: 10px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
}

.status-before {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
}

.status-after {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
}

.impact-col-title {
  font-size: 16px;
  font-weight: 700;
  margin: 0;
  color: var(--text);
}

.impact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.impact-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--text);
}

.impact-cross {
  color: #ef4444;
  font-weight: 700;
  flex-shrink: 0;
}

.impact-check {
  color: var(--green);
  font-weight: 700;
  flex-shrink: 0;
}

.impact-metrics-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.impact-metric-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  text-align: center;
}

.impact-metric-card .metric-title {
  font-family: "DM Mono", monospace;
  font-size: 10px;
  color: var(--text-subtle);
  text-transform: uppercase;
  display: block;
  margin-bottom: 6px;
}

.metric-comparison {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 4px;
}

.val-before {
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: line-through;
}

.metric-arrow {
  color: var(--blue);
  font-size: 12px;
}

.val-after {
  font-size: 16px;
  font-weight: 800;
  color: var(--text);
}

.metric-delta {
  font-family: "DM Mono", monospace;
  font-size: 11px;
  font-weight: 700;
  color: var(--green);
}

/* 7. "You Be The AI Engineer" Scenario Decision Challenge */
.scenario-challenge-card {
  margin-top: 32px;
  background: var(--surface-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
}

.scenario-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.scenario-channel-tag {
  font-family: "DM Mono", monospace;
  font-size: 12px;
  color: var(--blue);
  background: rgba(56, 189, 248, 0.08);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}

.scenario-statement {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  margin-bottom: 20px;
  border-left: 3px solid var(--amber);
}

.scenario-statement h4 {
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--text);
}

.scenario-statement p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-muted);
  margin: 0;
}

.scenario-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 18px;
}

.scenario-opt-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  transition: all 0.2s ease;
  line-height: 1.5;
}

.scenario-opt-btn:hover {
  background: var(--surface-hover);
  border-color: var(--blue);
  transform: translateX(4px);
}

.scenario-opt-btn.selected-correct {
  border-color: var(--green);
  background: rgba(16, 185, 129, 0.08);
  color: var(--green);
}

.scenario-opt-btn.selected-incorrect {
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.08);
  color: #f87171;
}

.scenario-feedback {
  border-radius: var(--radius-md);
  padding: 18px 22px;
  font-size: 14px;
  line-height: 1.6;
  border: 1px solid var(--line);
}

.feedback-correct {
  background: rgba(16, 185, 129, 0.08);
  border-color: rgba(16, 185, 129, 0.4);
  color: var(--text);
}

.feedback-correct .feedback-badge {
  color: var(--green);
  font-weight: 700;
  font-family: "DM Mono", monospace;
  font-size: 12px;
  margin-bottom: 8px;
}

.feedback-incorrect {
  background: rgba(239, 68, 68, 0.08);
  border-color: rgba(239, 68, 68, 0.4);
  color: var(--text);
}

.feedback-incorrect .feedback-badge {
  color: #f87171;
  font-weight: 700;
  font-family: "DM Mono", monospace;
  font-size: 12px;
  margin-bottom: 8px;
}

/* 8. Interactive Contact Intent Selector */
.intent-selector-group {
  margin-bottom: 24px;
}

.intent-selector-label {
  display: block;
  font-family: "DM Mono", monospace;
  font-size: 12px;
  color: var(--text-subtle);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.intent-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.intent-chip {
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--text-muted);
  padding: 8px 14px;
  border-radius: var(--radius-full);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.intent-chip:hover {
  border-color: var(--blue);
  color: var(--text);
}

.intent-chip.active {
  background: rgba(56, 189, 248, 0.15);
  border-color: var(--blue);
  color: var(--blue);
  box-shadow: 0 0 10px var(--blue-glow);
}

.contact-interactive-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 20px;
  text-align: left;
}

.contact-interactive-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.contact-input,
.contact-textarea {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--text);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s ease;
}

.contact-input:focus,
.contact-textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 2px var(--blue-glow);
}

.contact-textarea {
  min-height: 120px;
  resize: vertical;
}

/* Responsive adjustments */
@media (max-width: 900px) {
  .lifecycle-stages-bar {
    grid-template-columns: repeat(3, 1fr);
  }
  .impact-columns-grid {
    grid-template-columns: 1fr;
  }
  .lifecycle-meta-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .lifecycle-stages-bar {
    grid-template-columns: repeat(2, 1fr);
  }
  .impact-metrics-row {
    grid-template-columns: 1fr;
  }
  .contact-interactive-form .form-row {
    grid-template-columns: 1fr;
  }
  .cmd-palette-backdrop {
    padding: 20px 10px;
  }
}