/* Creating Threads Content for the AI, SI, and Agentic Era - Stylesheet */
:root {
  --bg-primary: #05070d;
  --bg-secondary: #0c101d;
  --bg-tertiary: #131a2e;
  --bg-card: #101627;
  --bg-input: #080c18;
  --border-color: #212c47;
  --border-focus: #ffffff;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-threads: #ffffff;
  --accent-threads-glow: rgba(255, 255, 255, 0.15);
  --accent-coral: #ff5252;
  --accent-amber: #f59e0b;
  --accent-cyan: #00d2ff;
  --accent-blue: #2f80ed;
  --accent-violet: #a855f7;
  --accent-emerald: #10b981;
  --accent-rose: #f43f5e;

  --threads-gradient: linear-gradient(135deg, #ffffff 0%, #cbd5e1 50%, #94a3b8 100%);
  --cyan-gradient: linear-gradient(135deg, #00d2ff 0%, #2f80ed 100%);
  --violet-gradient: linear-gradient(135deg, #a855f7 0%, #6366f1 100%);
  --card-gradient: linear-gradient(180deg, rgba(16, 22, 39, 0.95) 0%, rgba(12, 16, 29, 0.95) 100%);

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --sidebar-width: 290px;
  --coach-width: 330px;
  --header-height: 64px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Header */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(8, 12, 24, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

.header-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-badge {
  background: var(--threads-gradient);
  color: #000000;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: 6px;
}

.title-group h1 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.title-group p {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.progress-container {
  display: flex;
  align-items: center;
  gap: 10px;
}

.progress-bar-wrap {
  width: 130px;
  height: 8px;
  background: var(--bg-input);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.progress-bar-fill {
  width: 7%;
  height: 100%;
  background: var(--cyan-gradient);
  transition: width 0.3s ease;
}

.progress-text {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  font-weight: 700;
}

.nav-link-btn {
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 6px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  transition: all 0.2s ease;
}

.nav-link-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent-cyan);
  background: rgba(0, 210, 255, 0.08);
}

/* App Container Layout */
.app-container {
  max-width: 1440px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr) var(--coach-width);
  gap: 24px;
  padding: 24px;
  min-height: calc(100vh - var(--header-height));
}

/* Step Navigation Sidebar */
.step-nav {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  height: fit-content;
  max-height: calc(100vh - var(--header-height) - 48px);
  overflow-y: auto;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 16px;
}

.step-nav-title {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

.step-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.step-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.step-nav-item:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.step-nav-item.active {
  background: rgba(0, 210, 255, 0.12);
  border-color: rgba(0, 210, 255, 0.4);
  color: var(--accent-cyan);
}

.step-nav-item.completed {
  border-color: rgba(16, 185, 129, 0.35);
}

.step-nav-item.completed .step-index-badge {
  background: var(--accent-emerald);
  color: #000000;
}

.step-index-badge {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.step-label {
  font-size: 0.83rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Stage Cards Content Area */
.stage-content {
  min-width: 0;
}

.card-step {
  display: none;
  background: var(--card-gradient);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 32px;
  margin-bottom: 24px;
}

.card-step.active {
  display: block;
  animation: fadeIn 0.25s ease-in-out;
}

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

.stage-badge-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.stage-badge {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.epistemic-badge {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 4px;
}

.epistemic-badge.established {
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.epistemic-badge.evidence {
  background: rgba(0, 210, 255, 0.12);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 210, 255, 0.3);
}

.epistemic-badge.emerging {
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.card-step h2 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.card-step p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 18px;
}

.card-step p strong {
  color: var(--text-primary);
}

.callout-box {
  background: rgba(12, 16, 29, 0.7);
  border-left: 4px solid var(--accent-cyan);
  border-radius: 0 8px 8px 0;
  padding: 16px 20px;
  margin: 20px 0;
  border-top: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.callout-box.alert {
  border-left-color: var(--accent-rose);
  background: rgba(244, 63, 94, 0.05);
}

.callout-box.success {
  border-left-color: var(--accent-emerald);
  background: rgba(16, 185, 129, 0.05);
}

.callout-box h4 {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.callout-box p {
  font-size: 0.88rem;
  margin-bottom: 0;
  color: var(--text-secondary);
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.feature-box {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 18px;
}

.feature-box h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.feature-box p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* Data Tables */
.data-table-wrap {
  overflow-x: auto;
  margin: 22px 0;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  text-align: left;
}

.data-table th {
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: 12px 16px;
  font-weight: 700;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
  background: rgba(16, 22, 39, 0.4);
}

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

.data-table tr:hover td {
  background: rgba(0, 210, 255, 0.03);
}

/* Multi-OS Terminal Container */
.terminal-container {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  margin: 24px 0;
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.os-tabs {
  display: flex;
  gap: 8px;
}

.os-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.os-btn:hover {
  color: var(--text-primary);
}

.os-btn.active {
  background: var(--bg-tertiary);
  color: var(--accent-cyan);
  border-color: rgba(0, 210, 255, 0.3);
}

.terminal-card {
  display: none;
  padding: 16px;
  position: relative;
}

.terminal-card.active {
  display: block;
}

.terminal-card pre {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #e2e8f0;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-all;
}

.btn-copy {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.72rem;
  padding: 4px 8px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-copy:hover {
  color: var(--text-primary);
  border-color: var(--accent-cyan);
}

/* Checkpoint Verification Block */
.checkpoint-block {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 20px;
  margin-top: 32px;
}

.checkpoint-block h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.checkpoint-prompt {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.checkpoint-form {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
}

.checkpoint-input {
  flex: 1;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 10px 14px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  outline: none;
  transition: border-color 0.2s ease;
}

.checkpoint-input:focus {
  border-color: var(--accent-cyan);
}

.checkpoint-btn {
  background: var(--cyan-gradient);
  color: #000000;
  font-weight: 700;
  font-size: 0.85rem;
  border: none;
  padding: 0 20px;
  border-radius: 6px;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.checkpoint-btn:hover {
  opacity: 0.9;
}

.verify-feedback {
  font-size: 0.82rem;
  font-family: var(--font-mono);
  display: none;
  padding: 8px 12px;
  border-radius: 4px;
}

.verify-feedback.pass {
  display: block;
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.verify-feedback.fail {
  display: block;
  background: rgba(244, 63, 94, 0.12);
  color: var(--accent-rose);
  border: 1px solid rgba(244, 63, 94, 0.3);
}

/* Stage Navigation Buttons */
.stage-actions {
  display: flex;
  justify-content: space-between;
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

.btn-nav-stage {
  padding: 10px 20px;
  border-radius: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-nav-stage.prev {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.btn-nav-stage.prev:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
}

.btn-nav-stage.next {
  background: var(--threads-gradient);
  border: none;
  color: #000000;
  font-weight: 700;
}

.btn-nav-stage.next:hover {
  opacity: 0.9;
}

/* Content Score Interactive Simulator */
.score-calc-container {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 24px;
  margin: 24px 0;
}

.score-dimension-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.score-dimension-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--bg-secondary);
  padding: 12px 16px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
}

.score-dimension-row label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
}

.score-slider {
  accent-color: var(--accent-cyan);
  cursor: pointer;
}

.score-output-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 20px;
}

.total-score-val {
  font-size: 2.2rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--accent-cyan);
}

.score-grade-badge {
  font-size: 0.85rem;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 6px;
  text-transform: uppercase;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border: 1px solid var(--accent-emerald);
}

/* Orbit AI Coach Sidebar */
.coach-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  height: fit-content;
  max-height: calc(100vh - var(--header-height) - 48px);
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  overflow: hidden;
}

.coach-header {
  padding: 14px 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.coach-title-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.coach-avatar {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: var(--threads-gradient);
  color: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 800;
}

.coach-name {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
}

.coach-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
}

.coach-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 400px;
}

.coach-msg {
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  line-height: 1.45;
}

.coach-msg.bot {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  align-self: flex-start;
}

.coach-msg.user {
  background: rgba(0, 210, 255, 0.15);
  border: 1px solid rgba(0, 210, 255, 0.3);
  color: #e0f2fe;
  align-self: flex-end;
}

.faq-chips-container {
  padding: 10px 16px;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: rgba(8, 12, 24, 0.4);
}

.faq-chips-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
}

.faq-chip {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.75rem;
  padding: 6px 10px;
  border-radius: 4px;
  cursor: pointer;
  text-align: left;
  transition: all 0.2s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.faq-chip:hover {
  color: var(--text-primary);
  border-color: var(--accent-cyan);
  background: rgba(0, 210, 255, 0.08);
}

.coach-input-wrap {
  padding: 12px 16px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  display: flex;
  gap: 8px;
}

.coach-input {
  flex: 1;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  padding: 8px 12px;
  font-size: 0.82rem;
  outline: none;
}

.coach-input:focus {
  border-color: var(--accent-cyan);
}

.coach-send-btn {
  background: var(--threads-gradient);
  border: none;
  border-radius: 6px;
  color: #000000;
  font-weight: 700;
  padding: 0 14px;
  cursor: pointer;
}

/* Delete Guard Simulator */
.delete-guard-box {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 20px;
  margin: 20px 0;
}

.delete-guard-controls {
  display: flex;
  gap: 12px;
  margin-top: 14px;
}

.delete-guard-input {
  flex: 1;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 8px 12px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.delete-guard-btn {
  background: var(--accent-rose);
  color: #ffffff;
  border: none;
  font-weight: 700;
  padding: 0 16px;
  border-radius: 6px;
  cursor: pointer;
}

.delete-guard-output {
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  display: none;
}

.delete-guard-output.blocked {
  display: block;
  background: rgba(244, 63, 94, 0.12);
  color: var(--accent-rose);
  border: 1px solid rgba(244, 63, 94, 0.3);
}

.delete-guard-output.safe {
  display: block;
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

/* Responsive */
@media (max-width: 1200px) {
  .app-container {
    grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  }
  .coach-sidebar {
    display: none;
  }
}

@media (max-width: 800px) {
  .app-container {
    grid-template-columns: 1fr;
  }
  .step-nav {
    display: none;
  }
  .header-actions .progress-container {
    display: none;
  }
}


/* Checkpoint Green Checkmark on Menu Items (Right-aligned) */
.nav-item a,
.step-nav-item,
.step-nav-btn,
.nav-item-btn,
.nav-link {
  display: flex !important;
  align-items: center !important;
  justify-content: flex-start !important;
  position: relative !important;
}

.nav-item.completed a::after,
.step-nav-item.completed::after,
.step-nav-btn.completed::after,
.nav-item-btn.completed::after,
.nav-link.completed::after {
  content: " \2713" !important;
  margin-left: auto !important;
  color: #22c55e !important;
  font-weight: 800 !important;
  font-size: 1.15rem !important;
  line-height: 1 !important;
  display: inline-flex !important;
  align-items: center !important;
}