/* Topbot.vn Guides Styling - Multi-Theme, Step UI & Full-width Sidebar Chat */

/* Light Theme Variables (Default) */
.light-theme {
  --bg-color: hsl(210, 20%, 97%);
  --panel-bg: hsl(0, 0%, 100%);
  --panel-hover: hsl(210, 16%, 95%);
  --border-color: hsl(210, 14%, 88%);
  
  --primary-color: hsl(224, 100%, 58%);
  --primary-glow: hsla(224, 100%, 58%, 0.08);
  --primary-hover: hsl(224, 100%, 52%);
  --gradient-accent: linear-gradient(135deg, hsl(224, 100%, 58%), hsl(272, 85%, 52%));
  --primary-glow-effect: 0 4px 14px 0 hsla(224, 100%, 58%, 0.2);
  
  --success-color: hsl(145, 80%, 38%);
  --success-bg: hsla(145, 80%, 38%, 0.08);
  --warning-color: hsl(38, 100%, 45%);
  --warning-bg: hsla(38, 100%, 45%, 0.08);
  --danger-color: hsl(354, 85%, 50%);
  --danger-bg: hsla(354, 85%, 50%, 0.08);
  
  --text-primary: hsl(222, 20%, 15%);
  --text-secondary: hsl(222, 10%, 40%);
  --text-muted: hsl(222, 8%, 60%);
  
  --font-body: 'Inter', sans-serif;
  --font-title: 'Outfit', sans-serif;
  --font-code: 'Fira Code', monospace;
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 24px rgba(149, 157, 165, 0.15);
  --shadow-lg: 0 12px 32px rgba(149, 157, 165, 0.25);
}

/* Dark Theme Variables */
.dark-theme {
  --bg-color: hsl(222, 25%, 8%);
  --panel-bg: hsl(222, 20%, 12%);
  --panel-hover: hsl(222, 18%, 16%);
  --border-color: hsl(222, 15%, 18%);
  
  --primary-color: hsl(224, 100%, 60%);
  --primary-glow: hsla(224, 100%, 60%, 0.12);
  --primary-hover: hsl(224, 100%, 53%);
  --gradient-accent: linear-gradient(135deg, hsl(224, 100%, 60%), hsl(280, 85%, 55%));
  --primary-glow-effect: 0 0 25px 0 hsla(224, 100%, 60%, 0.25);
  
  --success-color: hsl(145, 80%, 42%);
  --success-bg: hsla(145, 80%, 42%, 0.1);
  --warning-color: hsl(38, 100%, 50%);
  --warning-bg: hsla(38, 100%, 50%, 0.1);
  --danger-color: hsl(354, 85%, 53%);
  --danger-bg: hsla(354, 85%, 53%, 0.1);
  
  --text-primary: hsl(220, 15%, 92%);
  --text-secondary: hsl(220, 10%, 70%);
  --text-muted: hsl(220, 8%, 50%);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.6);
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-body);
  overflow-x: hidden;
  height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.25s, color 0.25s;
}

/* Scrollbar customizations */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: var(--radius-sm);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Header / Topbar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 64px;
  background: var(--panel-bg);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  transition: background-color 0.25s, border-color 0.25s;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text-primary);
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1.15rem;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: var(--gradient-accent);
  color: #fff;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
}

.logo span span {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.topbar-divider {
  color: var(--border-color);
  font-weight: 400;
}

.topbar-title {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.topbar-center {
  flex: 1;
  max-width: 480px;
  margin: 0 24px;
}

.search-box {
  position: relative;
  width: 100%;
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.85rem;
}

.search-box input {
  width: 100%;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 10px 16px 10px 40px;
  color: var(--text-primary);
  font-size: 0.85rem;
  outline: none;
  transition: all 0.2s;
}

.search-box input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 10px 0 var(--primary-glow);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Theme Toggle Button */
.theme-toggle {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.2s;
}

.theme-toggle:hover {
  color: var(--primary-color);
  border-color: var(--primary-color);
  background: var(--panel-hover);
}

/* Language Selector */
.lang-selector {
  display: flex;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 2px;
}

.lang-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 8px;
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.15s;
}

.lang-btn.active {
  background: var(--primary-color);
  color: #fff;
}

.console-btn {
  background: var(--gradient-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  font-size: 0.8rem;
  font-weight: 600;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: var(--primary-glow-effect);
  transition: all 0.2s;
}

.console-btn:hover {
  transform: translateY(-1px);
  opacity: 0.95;
}

/* Layout Container */
.main-container {
  display: flex;
  flex: 1;
  margin-top: 64px;
  height: calc(100vh - 64px);
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  width: 280px;
  border-right: 1px solid var(--border-color);
  background: var(--panel-bg);
  padding: 24px 16px;
  overflow-y: auto;
  transition: background-color 0.25s, border-color 0.25s;
}

.nav-section {
  margin-bottom: 24px;
}

.nav-section-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 12px;
  letter-spacing: 0.05em;
  padding-left: 8px;
}

.nav-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  text-align: left;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
  width: 100%;
}

.nav-link i {
  font-size: 0.95rem;
  width: 16px;
  text-align: center;
  color: var(--text-muted);
  transition: color 0.2s;
}

.nav-link:hover {
  background: var(--panel-hover);
  color: var(--text-primary);
}

.nav-link.active {
  background: var(--primary-glow);
  color: var(--primary-color);
}

.nav-link.active i {
  color: var(--primary-color);
}

/* Content Split Screen Layout */
.content-wrapper {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 380px;
  height: 100%;
  overflow: hidden;
}

/* Scroll Container for Docs + Pagination */
.doc-scroll-container {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow-y: auto;
  flex: 1;
}

/* Document View Area */
.doc-pane {
  padding: 40px 48px 10px 48px;
  line-height: 1.6;
  max-width: 820px;
  margin: 0 auto;
  width: 100%;
}

/* Typography styles for docs */
.doc-pane h1 {
  font-family: var(--font-title);
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.doc-pane h2 {
  font-family: var(--font-title);
  font-size: 1.4rem;
  font-weight: 700;
  margin-top: 36px;
  margin-bottom: 16px;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 8px;
}

.doc-pane h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-top: 24px;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.doc-pane p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.doc-pane ul, .doc-pane ol {
  margin-left: 24px;
  margin-bottom: 16px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.doc-pane li {
  margin-bottom: 6px;
}

/* Step-by-Step Vertical Timeline UI */
.flow-container {
  position: relative;
  padding-left: 10px;
  margin: 28px 0;
}

.flow-container::before {
  content: '';
  position: absolute;
  top: 15px;
  bottom: 15px;
  left: 23px;
  width: 2px;
  background: var(--border-color);
  z-index: 1;
}

.flow-step {
  position: relative;
  display: flex;
  gap: 20px;
  margin-bottom: 24px;
  z-index: 2;
}

.flow-step-num {
  width: 28px;
  height: 28px;
  background: var(--gradient-accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
  flex-shrink: 0;
  box-shadow: 0 0 0 4px var(--bg-color);
}

.flow-step-content {
  flex: 1;
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s;
}

.flow-step-content:hover {
  border-color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.flow-step-content h3 {
  margin-top: 0;
  margin-bottom: 6px;
}

.flow-step-content p {
  margin-bottom: 0;
}

/* Highlight blocks / Alerts */
.alert {
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  margin: 20px 0;
  font-size: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.alert-title {
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.alert.tip {
  background: var(--success-bg);
  border-left: 4px solid var(--success-color);
  color: var(--text-primary);
}
.alert.tip .alert-title {
  color: var(--success-color);
}

.alert.important {
  background: var(--primary-glow);
  border-left: 4px solid var(--primary-color);
  color: var(--text-primary);
}
.alert.important .alert-title {
  color: var(--primary-color);
}

.alert.warning {
  background: var(--warning-bg);
  border-left: 4px solid var(--warning-color);
  color: var(--text-primary);
}
.alert.warning .alert-title {
  color: var(--warning-color);
}

/* Code Container block - ALWAYS DARK THEME */
.code-container {
  background: #0e1117 !important;
  border: 1px solid #21262d !important;
  border-radius: var(--radius-sm);
  margin: 20px 0;
  position: relative;
  overflow: hidden;
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  background: #161b22 !important;
  border-bottom: 1px solid #21262d !important;
}

.code-lang {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: #8b949e;
}

.copy-btn {
  background: transparent;
  border: none;
  color: #8b949e;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  gap: 6px;
}

.copy-btn:hover {
  color: #c9d1d9;
  background: #21262d;
}

.code-container pre {
  padding: 16px;
  margin: 0;
  overflow-x: auto;
}

.code-container code {
  font-family: var(--font-code);
  font-size: 0.8rem;
  color: #c9d1d9 !important;
}

/* Inline code styling */
p code, li code {
  font-family: var(--font-code);
  background: var(--panel-hover);
  border: 1px solid var(--border-color);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85rem;
  color: var(--primary-color);
}

/* Document Pagination (Footers) */
.doc-pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 820px;
  margin: 0 auto;
  width: 100%;
  padding: 30px 48px 60px 48px;
  border-top: 1px solid var(--border-color);
}

.pagination-btn {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  min-width: 160px;
  box-shadow: var(--shadow-sm);
}

.pagination-btn:hover {
  border-color: var(--primary-color);
  background: var(--panel-hover);
  transform: translateY(-1px);
}

.pagination-btn.prev {
  align-items: flex-start;
  margin-right: auto;
}

.pagination-btn.next {
  align-items: flex-end;
  margin-left: auto;
}

.pagination-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
}

.pagination-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* --- FULL-WIDTH RIGHT SIDEBAR CHAT PANEL (No smartphone frame) --- */
.preview-pane {
  background: var(--panel-bg);
  border-left: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 0;
  height: 100%;
  transition: background-color 0.25s, border-color 0.25s;
}

.chat-sidebar-container {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--bg-color);
  transition: background-color 0.25s;
}

.chat-header {
  padding: 16px 20px;
  background: var(--gradient-accent);
  color: #fff;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}

.chat-header .bot-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.22);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 1.15rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  flex-shrink: 0;
}

.bot-info {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.chat-header .bot-name {
  font-size: 0.88rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.01em;
}

.bot-status-wrapper {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-top: 2px;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #4ade80;
  display: inline-block;
}

.chat-header .bot-status {
  font-size: 0.68rem;
  color: rgba(255, 255, 255, 0.95);
  font-weight: 500;
}

.chat-header .chat-reset {
  background: rgba(255, 255, 255, 0.18);
  border: none;
  border-radius: 8px;
  color: #fff;
  cursor: pointer;
  display: flex;
  padding: 8px;
  transition: all 0.2s;
}

.chat-header .chat-reset:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.05);
}

.chat-messages {
  flex: 1;
  padding: 20px 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: var(--bg-color);
  transition: background-color 0.25s;
}

/* Chat Message wrappers with side-by-side avatar */
.chat-msg-wrapper {
  display: flex;
  gap: 8px;
  align-items: flex-end;
  max-width: 88%;
}

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

.chat-msg-wrapper.user {
  align-self: flex-end;
  justify-content: flex-end;
}

.chat-msg-wrapper .chat-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.chat-msg {
  padding: 10px 14px;
  font-size: 0.78rem;
  line-height: 1.45;
}

.chat-msg-wrapper.bot .chat-msg {
  background: var(--panel-bg);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 14px 14px 14px 4px;
  box-shadow: var(--shadow-sm);
}

.chat-msg-wrapper.user .chat-msg {
  background: var(--primary-color);
  color: #fff;
  border-radius: 14px 14px 4px 14px;
  border: none;
  box-shadow: var(--primary-glow-effect);
}

.chat-typing {
  align-self: flex-start;
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  padding: 8px 14px;
  border-radius: 14px 14px 14px 4px;
  display: flex;
  gap: 4px;
  align-items: center;
  box-shadow: var(--shadow-sm);
  margin-left: 36px; /* Offset to align with messages next to avatar */
}

.chat-typing span {
  width: 5px;
  height: 5px;
  background: var(--text-secondary);
  border-radius: 50%;
  animation: typingBounce 1.4s infinite ease-in-out both;
}

.chat-typing span:nth-child(2) { animation-delay: 0.2s; }
.chat-typing span:nth-child(3) { animation-delay: 0.4s; }

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

.chat-quick-chips {
  padding: 8px 12px 4px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  background: transparent;
  flex-shrink: 0;
  border-top: 1px solid var(--border-color);
}

.chip-btn {
  width: auto;
  max-width: 100%;
  text-align: left;
  padding: 8px 12px;
  border-radius: 999px;
  border: none;
  background: #ffffff;
  color: var(--primary-color);
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  box-shadow: var(--shadow-sm);
  transition: all 0.15s;
}

.chip-btn:hover {
  background: hsl(210, 16%, 95%);
  transform: translateY(-1px);
}

.chat-input-wrapper {
  padding: 14px 16px 20px 16px;
  border-top: 1px solid var(--border-color);
  background: var(--panel-bg);
  flex-shrink: 0;
  transition: background-color 0.25s;
}

.chat-input-area {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 4px 6px 4px 16px;
  transition: background-color 0.25s, border-color 0.25s;
}

.chat-input-area input {
  flex: 1;
  background: transparent;
  border: none;
  font-size: 0.8rem;
  color: var(--text-primary);
  outline: none;
  padding: 8px 0;
}

.chat-icon-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
  font-size: 1.05rem;
  transition: color 0.15s;
}

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

.chat-send-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary-color);
  color: #fff;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: opacity 0.15s;
}

.chat-send-btn:hover {
  opacity: 0.9;
}

.chat-branding {
  padding-top: 10px;
  text-align: center;
  font-size: 0.65rem;
  color: var(--text-muted);
}

.chat-branding strong {
  color: var(--text-secondary);
}

/* Responsive constraints */
@media (max-width: 992px) {
  .content-wrapper {
    grid-template-columns: 1fr;
  }
  .preview-pane {
    display: none;
  }
}
@media (max-width: 768px) {
  .sidebar {
    display: none;
  }
  .topbar-center {
    display: none;
  }
}