/* Modern Design System & Variables */
:root {
  --bg-color: #000000;
  --text-primary: #f5f5f7;
  --text-secondary: #86868b;
  --border-color: #222222;
  --border-hover: #333333;
  --search-bg: #121212;
  --search-hover: #181818;
  --search-focus-border: #444446;
  --btn-bg: #161618;
  --btn-hover: #222224;
  --ai-gradient: linear-gradient(135deg, #a855f7 0%, #3b82f6 50%, #ec4899 100%);
  --ai-glow: rgba(168, 85, 247, 0.2);
  --ai-glow-active: rgba(168, 85, 247, 0.45);
  --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Header / Navigation */
.top-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 18px 32px;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 10;
}

.nav-group {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 400;
  letter-spacing: -0.01em;
  transition: var(--transition-smooth);
}

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

.nav-icon-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  position: relative;
  overflow: hidden;
  transition: var(--transition-smooth);
}

.nav-icon-btn:hover {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
}

/* Avatar styling with subtle AI glow outline */
.avatar-btn {
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  transition: var(--transition-smooth);
}

.avatar-btn:hover {
  border-color: var(--text-secondary);
  background-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.05);
}

/* Main Container */
.main-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  max-width: 100%;
  margin-top: 60px; /* offset for top-nav on short screens */
}

/* Logo styling */
.logo-container {
  margin-bottom: 28px;
  user-select: none;
}

.logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 5.5rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  display: inline-block;
  position: relative;
}

.logo span {
  display: inline-block;
  background: var(--ai-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-left: -2px;
}

/* Search Form */
.search-form {
  width: 100%;
  max-width: 620px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

/* Search bar capsule container */
.search-bar-container {
  width: 100%;
  height: 52px;
  background-color: var(--search-bg);
  border: 1px solid var(--border-color);
  border-radius: 26px;
  display: flex;
  align-items: center;
  padding: 0 16px 0 10px;
  transition: var(--transition-smooth);
  position: relative;
}

/* Subtle background glow when AI Mode is active on the search bar */
.search-bar-container::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 26px;
  background: var(--ai-gradient);
  z-index: -1;
  opacity: 0;
  transition: var(--transition-smooth);
}

.search-bar-container.ai-active {
  border-color: transparent;
  box-shadow: 0 0 20px var(--ai-glow);
}

.search-bar-container.ai-active::before {
  opacity: 0.35;
}

.search-bar-container:focus-within {
  background-color: #161616;
  border-color: var(--search-focus-border);
}

.search-bar-container.ai-active:focus-within {
  border-color: transparent;
  box-shadow: 0 0 25px var(--ai-glow-active);
}

.search-bar-container.ai-active:focus-within::before {
  opacity: 0.6;
}

/* Icon Buttons in Search Bar */
.search-bar-icon-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.search-bar-icon-btn:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.search-bar-icon-btn.left-icon {
  margin-right: 4px;
}

/* Input field */
.search-input {
  flex: 1;
  height: 100%;
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: 'Outfit', sans-serif;
  font-size: 16px;
  font-weight: 400;
  padding: 0 10px;
}

.search-input::placeholder {
  color: #555558;
  transition: var(--transition-smooth);
}

.search-bar-container:focus-within .search-input::placeholder {
  color: var(--text-secondary);
}

/* Right Controls Container */
.search-right-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* AI Mode Toggle Button */
.ai-mode-toggle {
  background: #1e1e24;
  border: 1px solid transparent;
  color: var(--text-primary);
  font-family: 'Outfit', sans-serif;
  font-size: 13px;
  font-weight: 500;
  height: 32px;
  padding: 0 14px 0 10px;
  border-radius: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  position: relative;
  transition: var(--transition-smooth);
  user-select: none;
}

/* Gradient Border implementation */
.ai-mode-toggle::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 16px;
  padding: 1px;
  background: var(--ai-gradient);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0.6;
  transition: var(--transition-smooth);
}

.ai-mode-toggle.active {
  background: rgba(168, 85, 247, 0.08);
}

.ai-mode-toggle.active::after {
  opacity: 1;
}

/* Active Glowing pulse effect behind badge */
.ai-mode-glow {
  position: absolute;
  inset: 0;
  border-radius: 16px;
  background: var(--ai-gradient);
  filter: blur(8px);
  z-index: -1;
  opacity: 0;
  transition: var(--transition-smooth);
}

.ai-mode-toggle.active:hover .ai-mode-glow {
  opacity: 0.45;
}

.ai-mode-toggle:hover::after {
  opacity: 1;
}

.sparkles-icon {
  color: #c084fc;
  transition: var(--transition-smooth);
}

.ai-mode-toggle.active .sparkles-icon {
  animation: sparklesRotate 8s linear infinite;
  color: #fff;
}

@keyframes sparklesRotate {
  0% { transform: rotate(0deg) scale(1); }
  50% { transform: rotate(180deg) scale(1.1); }
  100% { transform: rotate(360deg) scale(1); }
}

/* Bottom Action Buttons */
.search-actions {
  display: flex;
  gap: 12px;
  margin-top: 4px;
}

.action-btn {
  background-color: var(--btn-bg);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-family: 'Outfit', sans-serif;
  font-size: 14px;
  font-weight: 500;
  height: 38px;
  padding: 0 20px;
  border-radius: 19px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: var(--transition-smooth);
}

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

.action-btn:active {
  transform: translateY(0);
}

/* Special accent for Ask AI button */
.ai-search-btn {
  position: relative;
  background: rgba(168, 85, 247, 0.03);
}

.ai-search-btn::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 19px;
  padding: 1px;
  background: var(--ai-gradient);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0.15;
  transition: var(--transition-smooth);
}

.ai-search-btn:hover {
  background-color: rgba(168, 85, 247, 0.08);
}

.ai-search-btn:hover::after {
  opacity: 0.6;
}

/* Footer styling */
.bottom-footer {
  width: 100%;
  background-color: #050505;
  border-top: 1px solid #111112;
}

.footer-row {
  padding: 14px 32px;
  font-size: 13.5px;
  color: var(--text-secondary);
}

.footer-top {
  border-bottom: 1px solid #111112;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-group {
  display: flex;
  gap: 24px;
}

.footer-link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-smooth);
}

.footer-link:hover {
  color: var(--text-primary);
}

/* Responsive adjustment */
@media (max-width: 600px) {
  .logo {
    font-size: 4rem;
  }
  
  .top-nav {
    padding: 16px 20px;
  }
  
  .footer-bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 12px;
  }
  
  .footer-group {
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
  }
}

/* Button Ripple Effect styles */
.ripple {
  position: absolute;
  border-radius: 50%;
  transform: scale(0);
  animation: rippleEffect 0.6s ease-out;
  background-color: rgba(255, 255, 255, 0.15);
  pointer-events: none;
}

@keyframes rippleEffect {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* Chatbot Drawer Overlay Backdrop */
.chat-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.chat-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

/* Chatbot Slide-over Drawer */
.chat-drawer {
  position: fixed;
  right: -670px;
  top: 0;
  width: 650px;
  height: 100vh;
  background-color: #08080a;
  border-left: 1px solid #161618;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  box-shadow: -10px 0 40px rgba(0, 0, 0, 0.7);
  transition: right 0.4s cubic-bezier(0.25, 0.8, 0.25, 1), width 0.3s ease, background-color 0.3s ease;
}

.chat-drawer.open {
  right: 0;
}

/* Fullscreen Mode override */
.chat-drawer.fullscreen {
  width: 100vw !important;
  right: -100vw;
  background-color: #030303; /* absolute minimal pitch black */
  border-left: none;
  box-shadow: none;
}

.chat-drawer.fullscreen.open {
  right: 0 !important;
}

/* Chat Drawer Header */
.chat-drawer-header {
  display: flex;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid #121214;
  background-color: #060608;
  transition: background-color 0.3s ease, border-color 0.3s ease, padding 0.3s ease;
}

.chat-drawer.fullscreen .chat-drawer-header {
  background-color: #030303;
  border-color: #111112;
  padding: 20px 40px;
}

.chat-drawer-header-inner {
  display: flex;
  width: 100%;
  justify-content: space-between;
  align-items: center;
}

.chat-drawer.fullscreen .chat-drawer-header-inner {
  max-width: 100%;
}

.chat-drawer-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
}

.chat-drawer-title svg {
  color: #c084fc;
}

.chat-toggle-size-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.chat-toggle-size-btn:hover {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
}

.chat-close-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.chat-close-btn:hover {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
}

/* Messages Scroller */
.chat-messages-container {
  flex: 1;
  overflow-y: auto;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  scroll-behavior: smooth;
  transition: padding 0.3s ease;
}

.chat-drawer.fullscreen .chat-messages-container {
  max-width: 100%;
  padding: 40px 40px;
}

/* Scrollbar customization for chat */
.chat-messages-container::-webkit-scrollbar {
  width: 5px;
}

.chat-messages-container::-webkit-scrollbar-track {
  background: transparent;
}

.chat-messages-container::-webkit-scrollbar-thumb {
  background: #1c1c1f;
  border-radius: 3px;
}

.chat-messages-container::-webkit-scrollbar-thumb:hover {
  background: #2a2a2f;
}

/* Message Bubble Items */
.chat-msg {
  display: flex;
  flex-direction: column;
  max-width: 88%;
  animation: chatFadeIn 0.3s ease-out forwards;
}

@keyframes chatFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* User Message bubble */
.chat-msg.user-msg {
  align-self: flex-end;
  background-color: #121214;
  border: 1px solid #1c1c1f;
  border-radius: 18px 18px 4px 18px;
  padding: 12px 18px;
  color: var(--text-primary);
  font-size: 14.5px;
  line-height: 1.5;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.chat-msg.user-msg:hover {
  border-color: rgba(168, 85, 247, 0.4);
  box-shadow: 0 4px 14px rgba(168, 85, 247, 0.08);
}

/* AI Message formatting - Borderless, floating text look */
.chat-msg.ai-msg {
  align-self: flex-start;
  max-width: 100%;
}

.ai-msg-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.chat-speaker-btn {
  background: rgba(168, 85, 247, 0.1);
  border: 1px solid rgba(168, 85, 247, 0.2);
  color: #c084fc;
  cursor: pointer;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.chat-speaker-btn:hover {
  background-color: rgba(168, 85, 247, 0.2);
  transform: scale(1.05);
}

.ai-msg-term {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--text-primary);
}

.ai-msg-content {
  font-size: 14.5px;
  line-height: 1.6;
  color: #d1d1d6;
  padding-left: 2px;
}

.ai-msg-content p {
  margin-bottom: 12px;
}

.ai-msg-content p:last-child {
  margin-bottom: 0;
}

.ai-msg-content ul, 
.ai-msg-content ol {
  margin-left: 20px;
  margin-top: 8px;
  margin-bottom: 8px;
}

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

/* Inline platform source badges */
.inline-source-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background-color: #121214;
  border: 1px solid var(--border-color);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  color: var(--text-secondary);
  font-weight: 500;
  margin-left: 4px;
  vertical-align: middle;
}

.inline-source-tag::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.inline-source-tag.thoughtco::before {
  background-color: #a855f7;
}

.inline-source-tag.reddit::before {
  background-color: #f97316;
}

/* Reaction Dock under AI response bubbles */
.chat-reaction-bar {
  display: flex;
  gap: 6px;
  margin-top: 10px;
  padding-left: 2px;
}

.reaction-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  opacity: 0.4;
  cursor: pointer;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.reaction-btn:hover {
  background-color: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  opacity: 1;
}

.reaction-btn:active {
  transform: scale(0.95);
}

/* Chat Input Area */
.chat-input-wrapper {
  padding: 16px 20px 24px 20px;
  border-top: 1px solid #121214;
  background-color: #060608;
  transition: background-color 0.3s ease, border-color 0.3s ease, padding 0.3s ease;
}

.chat-drawer.fullscreen .chat-input-wrapper {
  background-color: #030303;
  border-top: none;
  padding: 24px 40px 40px 40px;
}

.chat-input-container {
  display: flex;
  align-items: center;
  background-color: rgba(18, 18, 20, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(16px);
  border-radius: 24px;
  padding: 4px 8px 4px 6px;
  height: 48px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  transition: var(--transition-smooth);
}

.chat-drawer.fullscreen .chat-input-container {
  max-width: 100%;
}

.chat-input-container:focus-within {
  border-color: #a855f7;
  box-shadow: 0 0 16px rgba(168, 85, 247, 0.25);
  background-color: rgba(24, 24, 28, 0.95);
}

.chat-user-input {
  flex: 1;
  height: 100%;
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 14.5px;
  padding: 0 12px;
}

.chat-user-input::placeholder {
  color: #555558;
}

.chat-input-icon-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.chat-input-icon-btn.plus-btn {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.chat-input-icon-btn.plus-btn:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.chat-input-icon-btn.mic-btn:hover {
  color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.05);
}

/* Chat Image styling */
.ai-msg-image-wrap {
  float: right;
  margin-left: 16px;
  margin-bottom: 8px;
  max-width: 130px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.ai-msg-image-wrap img {
  width: 100%;
  height: auto;
  display: block;
}

/* Media Breakpoints */
@media (max-width: 768px) {
  .chat-drawer {
    width: 100%;
    right: -100%;
  }
}