/* Creating Reddit 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: #ff4500;

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

  --accent-reddit: #ff4500;
  --accent-orange: #ff5722;
  --accent-cyan: #00d2ff;
  --accent-blue: #2f80ed;
  --accent-violet: #8b5cf6;
  --accent-emerald: #10b981;
  --accent-rose: #f43f5e;
  --accent-amber: #f59e0b;

  --reddit-gradient: linear-gradient(135deg, #ff4500 0%, #ff5722 50%, #ff8c00 100%);
  --cyan-gradient: linear-gradient(135deg, #00d2ff 0%, #2f80ed 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;
}

/* App Header */
.app-header {
  height: var(--header-height);
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 1.5rem;
  max-width: 1720px;
  margin: 0 auto;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.logo-badge {
  background: var(--reddit-gradient);
  color: #ffffff;
  font-weight: 800;
  font-size: 0.78rem;
  padding: 0.35rem 0.65rem;
  border-radius: 6px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  box-shadow: 0 2px 10px rgba(255, 69, 0, 0.35);
}

.title-group h1 {
  font-size: 1.12rem;
  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: 1.25rem;
}

.progress-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.progress-bar-wrap {
  width: 140px;
  height: 8px;
  background-color: var(--bg-tertiary);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.progress-bar-fill {
  height: 100%;
  width: 7%;
  background: var(--reddit-gradient);
  border-radius: 4px;
  transition: width 0.3s ease;
}

.progress-text {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-orange);
  min-width: 32px;
}

.nav-link-btn {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 0.4rem 0.85rem;
  border-radius: 6px;
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 600;
  transition: all 0.2s ease;
}

.nav-link-btn:hover {
  background: var(--bg-card);
  border-color: var(--accent-orange);
  color: var(--accent-orange);
}

/* Main Layout */
.app-container {
  display: flex;
  max-width: 1720px;
  margin: 0 auto;
  min-height: calc(100vh - var(--header-height));
  position: relative;
}

/* Left Sidebar Navigation */
.step-nav-sidebar {
  width: var(--sidebar-width);
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  padding: 1.25rem 0.75rem;
  overflow-y: auto;
  height: calc(100vh - var(--header-height));
  position: sticky;
  top: var(--header-height);
  flex-shrink: 0;
}

.sidebar-heading {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  padding: 0 0.75rem;
  font-weight: 700;
}

.step-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.step-nav-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.6rem 0.75rem;
  border-radius: 6px;
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.83rem;
  border: 1px solid transparent;
  transition: all 0.15s ease;
  cursor: pointer;
}

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

.step-nav-item.active {
  background: rgba(255, 69, 0, 0.12);
  color: #ffffff;
  border-color: rgba(255, 69, 0, 0.4);
  font-weight: 600;
}

.step-nav-item.completed {
  border-left: 3px solid var(--accent-emerald);
}

.step-nav-badge {
  font-size: 0.7rem;
  font-weight: 700;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-input);
  color: var(--text-muted);
  flex-shrink: 0;
}

.step-nav-item.active .step-nav-badge {
  background: var(--reddit-gradient);
  color: #ffffff;
}

.step-nav-item.completed .step-nav-badge {
  background: var(--accent-emerald);
  color: #05070d;
}

/* Center Content Area */
.content-area {
  flex: 1;
  padding: 2rem 2.5rem;
  max-width: 960px;
  margin: 0 auto;
  overflow-y: visible;
}

.step-card {
  display: none;
  background: var(--card-gradient);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  margin-bottom: 2rem;
}

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

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

.step-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.25rem;
  margin-bottom: 1.5rem;
}

.step-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.step-number-tag {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-orange);
  letter-spacing: 0.05em;
}

.step-est-time {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.step-title {
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 0.5rem;
}

.step-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* Typography & Content Sections */
.step-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 1.5rem 0 0.75rem 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.step-content h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-orange);
  margin: 1.25rem 0 0.5rem 0;
}

.step-content p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin-bottom: 1rem;
}

.step-content ul, .step-content ol {
  margin: 0 0 1.25rem 1.5rem;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.step-content li {
  margin-bottom: 0.4rem;
}

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

/* Epistemic Badges */
.epistemic-badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-right: 0.4rem;
}

.badge-established {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.4);
}

.badge-evidence {
  background: rgba(0, 210, 255, 0.15);
  color: #00d2ff;
  border: 1px solid rgba(0, 210, 255, 0.4);
}

.badge-emerging {
  background: rgba(245, 158, 11, 0.15);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.4);
}

.badge-hypothesis {
  background: rgba(139, 92, 246, 0.15);
  color: #8b5cf6;
  border: 1px solid rgba(139, 92, 246, 0.4);
}

.badge-speculation {
  background: rgba(244, 63, 94, 0.15);
  color: #f43f5e;
  border: 1px solid rgba(244, 63, 94, 0.4);
}

/* Callout Boxes */
.callout-box {
  background: rgba(19, 26, 46, 0.6);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--accent-orange);
  border-radius: 8px;
  padding: 1.15rem;
  margin: 1.25rem 0;
}

.callout-box.cyan {
  border-left-color: var(--accent-cyan);
}

.callout-box.emerald {
  border-left-color: var(--accent-emerald);
}

.callout-box.rose {
  border-left-color: var(--accent-rose);
}

.callout-box.violet {
  border-left-color: var(--accent-violet);
}

.callout-title {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.callout-body {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Code & Pre Blocks */
pre, code {
  font-family: var(--font-mono);
}

code {
  background: rgba(255, 255, 255, 0.08);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  font-size: 0.85em;
  color: #e2e8f0;
}

pre {
  background-color: #070a12;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.5;
  color: #e2e8f0;
  margin: 1rem 0;
}

pre code {
  background: transparent;
  padding: 0;
  border-radius: 0;
}

/* Multi-OS Terminal Card Switcher */
.os-terminal-container {
  background: #080c16;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  margin: 1.25rem 0;
}

.os-tabs {
  display: flex;
  background: #0d1222;
  border-bottom: 1px solid var(--border-color);
  padding: 0 0.5rem;
}

.os-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.65rem 1rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
  font-family: var(--font-family);
}

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

.os-btn.active {
  color: var(--accent-orange);
  border-bottom-color: var(--accent-orange);
  background: rgba(255, 69, 0, 0.06);
}

.terminal-card {
  display: none;
  padding: 1rem;
}

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

.terminal-card pre {
  margin: 0;
  border: none;
  background: transparent;
  padding: 0;
}

/* Interactive Interactive Components */
.interactive-tool-box {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.25rem;
  margin: 1.25rem 0;
}

.tool-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.tool-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.tool-badge {
  font-size: 0.72rem;
  background: var(--reddit-gradient);
  color: #ffffff;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-weight: 700;
}

.slider-group {
  margin-bottom: 1rem;
}

.slider-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.35rem;
  font-size: 0.82rem;
}

.slider-label {
  color: var(--text-secondary);
  font-weight: 600;
}

.slider-value {
  color: var(--accent-orange);
  font-weight: 700;
  font-family: var(--font-mono);
}

.score-slider {
  width: 100%;
  height: 6px;
  background: var(--bg-input);
  border-radius: 3px;
  outline: none;
  accent-color: var(--accent-orange);
  cursor: pointer;
}

.score-result-card {
  background: #080c16;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
}

.total-score-val {
  font-size: 2.2rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--accent-orange);
  line-height: 1;
}

.tier-badge {
  font-size: 0.82rem;
  font-weight: 700;
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tier-1 { background: rgba(16, 185, 129, 0.2); color: #10b981; border: 1px solid #10b981; }
.tier-2 { background: rgba(0, 210, 255, 0.2); color: #00d2ff; border: 1px solid #00d2ff; }
.tier-3 { background: rgba(245, 158, 11, 0.2); color: #f59e0b; border: 1px solid #f59e0b; }
.tier-4 { background: rgba(139, 92, 246, 0.2); color: #8b5cf6; border: 1px solid #8b5cf6; }
.tier-5 { background: rgba(244, 63, 94, 0.2); color: #f43f5e; border: 1px solid #f43f5e; }

/* Checkpoint Box */
.checkpoint-container {
  background: #0a0e1c;
  border: 1px solid rgba(255, 69, 0, 0.3);
  border-radius: 8px;
  padding: 1.25rem;
  margin-top: 2rem;
}

.checkpoint-header {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--accent-orange);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.checkpoint-desc {
  font-size: 0.84rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.checkpoint-input-group {
  display: flex;
  gap: 0.5rem;
}

.checkpoint-input {
  flex: 1;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.55rem 0.85rem;
  border-radius: 6px;
  font-size: 0.85rem;
  outline: none;
  transition: border-color 0.2s ease;
}

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

.checkpoint-btn {
  background: var(--reddit-gradient);
  color: #ffffff;
  border: none;
  padding: 0.55rem 1.15rem;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.2s ease;
  white-space: nowrap;
}

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

.checkpoint-feedback {
  margin-top: 0.5rem;
  font-size: 0.82rem;
  display: none;
}

.checkpoint-feedback.success {
  display: block;
  color: var(--accent-emerald);
}

.checkpoint-feedback.error {
  display: block;
  color: var(--accent-rose);
}

/* Card Navigation Footer */
.card-nav-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-color);
}

.step-nav-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.6rem 1.25rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.step-nav-btn:hover {
  background: var(--bg-secondary);
  border-color: var(--accent-orange);
  color: var(--accent-orange);
}

.step-nav-btn.primary {
  background: var(--reddit-gradient);
  border-color: transparent;
  color: #ffffff;
}

.step-nav-btn.primary:hover {
  opacity: 0.92;
  color: #ffffff;
}

.step-nav-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  border-color: var(--border-color);
  background: var(--bg-tertiary);
  color: var(--text-muted);
}

/* Right Sidebar: Orbit AI Coach */
.coach-sidebar {
  width: var(--coach-width);
  background-color: var(--bg-secondary);
  border-left: 1px solid var(--border-color);
  padding: 1.25rem;
  height: calc(100vh - var(--header-height));
  position: sticky;
  top: var(--header-height);
  overflow-y: auto;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
}

.coach-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.85rem;
  margin-bottom: 1rem;
}

.coach-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  background: rgba(255, 69, 0, 0.15);
  color: var(--accent-orange);
  border: 1px solid rgba(255, 69, 0, 0.4);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  margin-bottom: 0.4rem;
  text-transform: uppercase;
}

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

.coach-subtitle {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.coach-chat-history {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: 1rem;
  padding-right: 0.25rem;
}

.chat-bubble {
  padding: 0.75rem 0.9rem;
  border-radius: 8px;
  font-size: 0.82rem;
  line-height: 1.45;
}

.chat-bubble.bot {
  background: #11172a;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  align-self: flex-start;
}

.chat-bubble.user {
  background: var(--reddit-gradient);
  color: #ffffff;
  align-self: flex-end;
}

.coach-faq-chips {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.faq-chip {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.76rem;
  padding: 0.45rem 0.65rem;
  border-radius: 6px;
  cursor: pointer;
  text-align: left;
  transition: all 0.15s ease;
}

.faq-chip:hover {
  background: var(--bg-card);
  border-color: var(--accent-orange);
  color: var(--text-primary);
}

.coach-input-wrap {
  display: flex;
  gap: 0.4rem;
  position: sticky;
  bottom: 0;
  background: var(--bg-secondary);
  padding-top: 0.5rem;
}

.coach-input {
  flex: 1;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  font-size: 0.8rem;
  outline: none;
}

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

.coach-send-btn {
  background: var(--reddit-gradient);
  color: #ffffff;
  border: none;
  padding: 0.5rem 0.85rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
}

/* Responsive Media Queries */
@media (max-width: 1200px) {
  .coach-sidebar {
    display: none;
  }
}

@media (max-width: 768px) {
  .app-container {
    flex-direction: column;
  }

  .step-nav-sidebar {
    width: 100%;
    height: auto;
    position: relative;
    top: 0;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem;
  }

  .step-nav-list {
    flex-direction: row;
    overflow-x: auto;
    padding-bottom: 0.5rem;
  }

  .step-nav-item {
    white-space: nowrap;
    padding: 0.4rem 0.65rem;
  }

  .content-area {
    padding: 1.25rem 1rem;
    max-width: 100%;
  }

  .step-card {
    padding: 1.25rem;
  }

  .step-title {
    font-size: 1.35rem;
  }
}


/* 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;
}