/* Creating TikTok Content for the AI, SI, and Agentic Era - Stylesheet */
:root {
  --bg-primary: #070913;
  --bg-secondary: #0f1424;
  --bg-tertiary: #171f38;
  --bg-card: #131a30;
  --bg-input: #0a0e1c;
  --border-color: #242f4d;
  --border-focus: #00f2fe;

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

  --accent-tiktok-cyan: #00f2fe;
  --accent-tiktok-pink: #fe2c55;
  --accent-amber: #f59e0b;
  --accent-gold: #fbbf24;
  --accent-indigo: #6366f1;
  --accent-violet: #8b5cf6;
  --accent-green: #10b981;

  --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: 1680px;
  margin: 0 auto;
}

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

.logo-badge {
  background: linear-gradient(135deg, var(--accent-tiktok-pink), var(--accent-tiktok-cyan));
  color: #070913;
  font-weight: 800;
  font-size: 0.78rem;
  padding: 0.35rem 0.65rem;
  border-radius: 6px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.title-group h1 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.title-group p {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

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

.progress-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.progress-bar-bg {
  width: 140px;
  height: 8px;
  background-color: var(--bg-tertiary);
  border-radius: 999px;
  overflow: hidden;
}

.progress-bar-fill {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--accent-tiktok-cyan), var(--accent-tiktok-pink));
  transition: width 0.3s ease;
}

.progress-text {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-tiktok-cyan);
  min-width: 38px;
}

/* Main Layout */
.main-layout {
  display: flex;
  max-width: 1680px;
  margin: 0 auto;
  min-height: calc(100vh - var(--header-height));
  position: relative;
}

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

.sidebar-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  font-weight: 700;
  padding: 0 0.75rem 0.75rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 0.75rem;
}

.step-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.step-nav-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.6rem 0.75rem;
  border-radius: 6px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.2s ease;
  border-left: 3px solid transparent;
}

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

.step-nav-item.active {
  background-color: var(--bg-card);
  color: var(--accent-tiktok-cyan);
  border-left-color: var(--accent-tiktok-cyan);
  font-weight: 600;
}

.step-nav-item.completed {
  color: var(--accent-green);
}

.step-nav-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background-color: var(--bg-tertiary);
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
  color: var(--text-secondary);
}

.step-nav-item.active .step-nav-badge {
  background-color: var(--accent-tiktok-cyan);
  color: #070913;
}

.step-nav-item.completed .step-nav-badge {
  background-color: var(--accent-green);
  color: #070913;
}

/* Center Content Area */
.content-area {
  flex: 1;
  padding: 2rem 2.5rem;
  max-width: 980px;
  overflow-y: visible;
  min-width: 0;
}

/* OS Selector Card */
.os-selector-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.08), rgba(254, 44, 85, 0.08));
  border: 1px solid var(--border-color);
  padding: 1rem 1.5rem;
  border-radius: 10px;
  margin-bottom: 2rem;
  gap: 1rem;
}

.os-selector-info h2 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.os-selector-info p {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.os-btn-group {
  display: flex;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 3px;
  gap: 3px;
  flex-shrink: 0;
}

.os-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.4rem 0.85rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
}

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

.os-btn.active {
  background-color: var(--accent-tiktok-cyan);
  color: #070913;
}

/* Step Card */
.step-card {
  display: none;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

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

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

.step-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.25rem;
  margin-bottom: 1.5rem;
}

.step-header-left {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.step-number-tag {
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--accent-tiktok-pink);
  letter-spacing: 0.05em;
  background: rgba(254, 44, 85, 0.12);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
}

.step-card-header h2 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-primary);
}

.step-est-time {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-tertiary);
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  flex-shrink: 0;
}

.step-intro {
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

/* Alert Boxes */
.alert-box {
  padding: 1rem 1.25rem;
  border-radius: 8px;
  margin: 1.5rem 0;
  border-left: 4px solid;
}

.alert-box.info {
  background-color: rgba(0, 242, 254, 0.08);
  border-left-color: var(--accent-tiktok-cyan);
}

.alert-box.warning {
  background-color: rgba(245, 158, 11, 0.08);
  border-left-color: var(--accent-amber);
}

.alert-box.important {
  background-color: rgba(254, 44, 85, 0.08);
  border-left-color: var(--accent-tiktok-pink);
}

.alert-box.success {
  background-color: rgba(16, 185, 129, 0.08);
  border-left-color: var(--accent-green);
}

.alert-title {
  font-size: 0.92rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  color: var(--text-primary);
}

.alert-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Tables */
.styled-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.88rem;
  background-color: var(--bg-secondary);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.styled-table th {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  text-align: left;
  padding: 0.75rem 1rem;
  font-weight: 700;
  border-bottom: 1px solid var(--border-color);
}

.styled-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
  vertical-align: top;
}

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

.styled-table tr:hover td {
  background-color: rgba(255, 255, 255, 0.02);
}

.styled-table code {
  background-color: var(--bg-input);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-tiktok-cyan);
}

/* Badges */
.badge-pill {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.badge-pill.known {
  background-color: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-pill.likely {
  background-color: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-pill.speculative {
  background-color: rgba(254, 44, 85, 0.15);
  color: var(--accent-tiktok-pink);
  border: 1px solid rgba(254, 44, 85, 0.3);
}

/* Grid Cards */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin: 1.5rem 0;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 1.5rem 0;
}

.feature-box {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 1.25rem;
  border-radius: 8px;
}

.feature-box h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--accent-tiktok-cyan);
}

.feature-box p {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* Terminal Card */
.terminal-card {
  background-color: #05070e;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin: 1.25rem 0;
  overflow: hidden;
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-secondary);
  padding: 0.5rem 0.85rem;
  border-bottom: 1px solid var(--border-color);
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.terminal-dots .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--border-color);
}

.terminal-dots .dot:nth-child(1) { background-color: #ef4444; }
.terminal-dots .dot:nth-child(2) { background-color: #f59e0b; }
.terminal-dots .dot:nth-child(3) { background-color: #10b981; }

.terminal-shell-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.copy-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
}

.copy-btn:hover {
  color: var(--text-primary);
  background-color: var(--bg-card);
}

.terminal-body {
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  line-height: 1.6;
  color: #38bdf8;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

/* Checkpoints */
.checkpoint-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.25rem;
  margin-top: 2rem;
}

.checkpoint-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

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

.checkpoint-badge {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background-color: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.checkpoint-badge.verified {
  background-color: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
  border-color: rgba(16, 185, 129, 0.3);
}

.checkpoint-desc {
  font-size: 0.84rem;
  color: var(--text-secondary);
  margin-bottom: 0.85rem;
}

.checkpoint-form {
  display: flex;
  gap: 0.65rem;
}

.checkpoint-input {
  flex: 1;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 0.6rem 0.85rem;
  color: var(--text-primary);
  font-size: 0.85rem;
  outline: none;
}

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

.checkpoint-btn {
  background: linear-gradient(135deg, var(--accent-tiktok-cyan), #0284c7);
  color: #070913;
  border: none;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0 1.25rem;
  border-radius: 6px;
  cursor: pointer;
  transition: opacity 0.2s;
  flex-shrink: 0;
}

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

.checkpoint-feedback {
  font-size: 0.82rem;
  margin-top: 0.65rem;
  display: none;
}

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

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

/* Step Footer Navigation */
.step-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  margin-top: 2rem;
}

.nav-btn {
  padding: 0.65rem 1.25rem;
  border-radius: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  transition: all 0.2s;
}

.nav-btn:hover:not(:disabled) {
  background-color: var(--bg-tertiary);
  border-color: var(--accent-tiktok-cyan);
}

.nav-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.nav-btn.btn-next {
  background: linear-gradient(135deg, var(--accent-tiktok-pink), #e11d48);
  border: none;
  color: #ffffff;
}

/* Score Calculator Widget */
.score-widget-container {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.score-widget-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1rem;
}

.total-score-badge {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--accent-tiktok-cyan);
  background: var(--bg-tertiary);
  padding: 0.35rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--accent-tiktok-cyan);
}

.score-dimensions-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.score-slider-row {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

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

.score-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--bg-tertiary);
  outline: none;
}

.score-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent-tiktok-cyan);
  cursor: pointer;
}

/* Right Sidebar: Ask Orbit AI Coach */
.coach-sidebar {
  width: var(--coach-width);
  background-color: var(--bg-secondary);
  border-left: 1px solid var(--border-color);
  padding: 1.25rem 0.85rem;
  flex-shrink: 0;
  height: calc(100vh - var(--header-height));
  position: sticky;
  top: var(--header-height);
  display: flex;
  flex-direction: column;
}

.coach-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.coach-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1rem;
}

.coach-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-tiktok-cyan), var(--accent-tiktok-pink));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #070913;
  flex-shrink: 0;
}

.coach-title-group h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.coach-status-badge {
  font-size: 0.72rem;
  color: var(--accent-green);
  font-weight: 600;
}

.quick-questions-box {
  margin-bottom: 1rem;
}

.quick-questions-title {
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.quick-questions-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.faq-chip {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  padding: 0.4rem 0.65rem;
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 0.78rem;
  cursor: pointer;
  text-align: left;
  transition: all 0.2s;
  line-height: 1.4;
}

.faq-chip:hover {
  background-color: var(--bg-card);
  color: var(--accent-tiktok-cyan);
  border-color: var(--accent-tiktok-cyan);
}

.coach-messages {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-right: 0.25rem;
  margin-bottom: 1rem;
}

.chat-bubble {
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  font-size: 0.82rem;
  line-height: 1.5;
  max-width: 90%;
}

.chat-bubble.bot {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  align-self: flex-start;
  border-left: 3px solid var(--accent-tiktok-cyan);
}

.chat-bubble.user {
  background: linear-gradient(135deg, var(--accent-tiktok-pink), #e11d48);
  color: #ffffff;
  align-self: flex-end;
}

.coach-input-group {
  display: flex;
  gap: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border-color);
}

.coach-input {
  flex: 1;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
  color: var(--text-primary);
  font-size: 0.82rem;
  outline: none;
}

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

.coach-send-btn {
  background-color: var(--accent-tiktok-cyan);
  color: #070913;
  border: none;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 0 0.85rem;
  border-radius: 6px;
  cursor: pointer;
}

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

@media (max-width: 768px) {
  .steps-sidebar {
    display: none;
  }
  .content-area {
    padding: 1.5rem 1rem;
    max-width: 100%;
  }
  .grid-2, .grid-3, .score-dimensions-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 392px) {
  .header-inner {
    padding: 0 0.75rem;
  }
  .brand-group {
    gap: 0.5rem;
  }
  .logo-badge {
    font-size: 0.7rem;
    padding: 0.25rem 0.45rem;
  }
  .title-group h1 {
    font-size: 0.95rem;
  }
  .title-group p {
    display: none;
  }
  .progress-container {
    gap: 0.4rem;
  }
  .progress-bar-bg {
    width: 70px;
  }
  .content-area {
    padding: 1rem 0.5rem;
  }
  .step-card {
    padding: 1.25rem 0.75rem;
  }
  .step-card-header h2 {
    font-size: 1.15rem;
  }
  .styled-table {
    display: block;
    overflow-x: auto;
  }
  .os-selector-card {
    flex-direction: column;
    align-items: flex-start;
  }
  .checkpoint-form {
    flex-direction: column;
  }
  .checkpoint-btn {
    padding: 0.6rem;
  }
}


/* 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;
}