:root {
  --bg:        #f8faff;
  --blue:      #1a6ff5;
  --blue-b:    #1558cc;
  --blue-l:    #3b7ef8;
  --cyan:      #0099cc;
  --glow:      rgba(26,111,245,.22);
  --glow-s:    rgba(26,111,245,.07);
  --text:      #0d1b3e;
  --text2:     #3a4f7a;
  --text3:     #7a8fba;
  --line:      rgba(26,80,200,.10);
  --r:         12px;
  --r2:        20px;
  --ease:      cubic-bezier(.4,0,.2,1);
  --fd:        'Rajdhani', sans-serif;
  --fb:        'Space Grotesk', sans-serif;
  --fm:        'JetBrains Mono', monospace;
  --dark-bg:   #030c22;
  --dark-card: rgba(8,18,52,.75);
  --dark-text: #dce8ff;
  --dark-text2:#7a93c0;
  --dark-text3:#3f5580;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  background: linear-gradient(155deg, #020c20 0%, #071130 55%, #030d20 100%);
  font-family: var(--fb);
  color: var(--dark-text);
  line-height: 1.65;
  overflow-x: hidden;
  min-height: 100vh;
}
.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 60px 24px 80px;
}
.demo-header { text-align: center; margin-bottom: 56px; }
.demo-tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(26,111,245,.10); border: 1px solid rgba(26,111,245,.22);
  padding: 7px 16px; border-radius: 100px;
  font-family: var(--fm); font-size: .68rem; letter-spacing: .1em;
  color: #5599ff; text-transform: uppercase; margin-bottom: 20px;
}
.tag-dot {
  width: 6px; height: 6px; background: #28c840; border-radius: 50%;
  box-shadow: 0 0 8px #28c840; animation: blink-dot 1.8s ease-in-out infinite;
}
@keyframes blink-dot { 0%,100%{opacity:1} 50%{opacity:.3} }
.demo-title {
  font-family: var(--fd); font-size: clamp(2rem, 5vw, 3.4rem); font-weight: 700;
  line-height: 1.05; letter-spacing: -.02em; color: var(--dark-text); margin-bottom: 14px;
}
.demo-title em {
  font-style: normal;
  background: linear-gradient(95deg, var(--blue-l), var(--cyan));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.demo-sub { font-size: .98rem; color: var(--dark-text2); max-width: 500px; margin: 0 auto; line-height: 1.7; }
.demo-layout { display: grid; grid-template-columns: 1fr 340px; gap: 20px; align-items: start; }
.chat-shell {
  background: rgba(4,10,30,.85); border: 1px solid rgba(26,111,245,.18);
  border-radius: 20px; overflow: hidden;
  box-shadow: 0 24px 80px rgba(0,0,0,.4), 0 0 0 1px rgba(255,255,255,.04);
  display: flex; flex-direction: column; height: 580px;
}
.chat-header {
  display: flex; align-items: center; gap: 12px; padding: 16px 20px;
  background: rgba(8,18,52,.7); border-bottom: 1px solid rgba(26,111,245,.12); flex-shrink: 0;
}
.chat-avatar-wrap { position: relative; }
.chat-avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; color: #fff; flex-shrink: 0;
}
.chat-status-dot {
  position: absolute; bottom: 1px; right: 1px;
  width: 10px; height: 10px; background: #28c840; border-radius: 50%;
  border: 2px solid rgba(4,10,30,.85); box-shadow: 0 0 8px rgba(40,200,64,.6);
}
.chat-info { flex: 1; }
.chat-name { font-family: var(--fd); font-size: 1rem; font-weight: 700; letter-spacing: .04em; color: var(--dark-text); margin-bottom: 1px; }
.chat-status { font-family: var(--fm); font-size: .62rem; letter-spacing: .06em; color: #28c840; text-transform: uppercase; }
.chat-header-badges { display: flex; gap: 6px; }
.hbadge {
  background: rgba(26,111,245,.12); border: 1px solid rgba(26,111,245,.2);
  border-radius: 6px; padding: 3px 8px; font-family: var(--fm);
  font-size: .58rem; color: var(--blue-l); letter-spacing: .06em; text-transform: uppercase;
}
.chat-messages {
  flex: 1; overflow-y: auto; padding: 20px;
  display: flex; flex-direction: column; gap: 12px; scroll-behavior: smooth;
}
.chat-messages::-webkit-scrollbar { width: 3px; }
.chat-messages::-webkit-scrollbar-thumb { background: rgba(26,111,245,.3); border-radius: 10px; }
.msg-row {
  display: flex; gap: 8px; align-items: flex-end;
  animation: msg-in .35s var(--ease) both;
}
@keyframes msg-in { from{opacity:0;transform:translateY(10px)} to{opacity:1;transform:translateY(0)} }
.msg-row.user { flex-direction: row-reverse; }
.msg-icon {
  width: 28px; height: 28px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: .7rem; flex-shrink: 0;
}
.msg-icon.ai-icon { background: linear-gradient(135deg, var(--blue), var(--cyan)); color: #fff; }
.msg-icon.user-icon { background: rgba(255,255,255,.08); color: var(--dark-text2); font-size: .65rem; }
.msg-content { max-width: 80%; display: flex; flex-direction: column; gap: 3px; }
.msg-row.user .msg-content { align-items: flex-end; }
.msg-sender { font-family: var(--fm); font-size: .58rem; letter-spacing: .06em; text-transform: uppercase; color: var(--dark-text3); padding: 0 4px; }
.msg-bubble {
  padding: 10px 14px; border-radius: 14px; font-size: .85rem; line-height: 1.6;
  max-width: 100%; word-break: break-word;
}
.msg-row.ai .msg-bubble {
  background: rgba(26,111,245,.10); border: 1px solid rgba(26,111,245,.15);
  color: var(--dark-text); border-bottom-left-radius: 4px;
}
.msg-row.user .msg-bubble {
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.10);
  color: var(--dark-text); border-bottom-right-radius: 4px;
}
.msg-bubble strong { color: #7ab8ff; }
.msg-time { font-family: var(--fm); font-size: .56rem; color: var(--dark-text3); padding: 0 4px; }
.typing-indicator { display: none; flex-direction: row; gap: 8px; align-items: flex-end; }
.typing-indicator.visible { display: flex; animation: msg-in .3s var(--ease) both; }
.typing-bubble {
  background: rgba(26,111,245,.10); border: 1px solid rgba(26,111,245,.15);
  border-radius: 14px; border-bottom-left-radius: 4px;
  padding: 12px 16px; display: flex; gap: 4px; align-items: center;
}
.typing-dot {
  width: 6px; height: 6px; background: var(--blue-l); border-radius: 50%;
  animation: typing 1.2s ease-in-out infinite;
}
.typing-dot:nth-child(2) { animation-delay: .2s; }
.typing-dot:nth-child(3) { animation-delay: .4s; }
@keyframes typing { 0%,60%,100%{transform:translateY(0);opacity:.5} 30%{transform:translateY(-5px);opacity:1} }
.quick-replies {
  padding: 10px 20px; display: flex; flex-wrap: wrap; gap: 7px;
  border-top: 1px solid rgba(26,111,245,.08); flex-shrink: 0;
  min-height: 54px; align-items: center;
  background: rgba(4,10,30,.5); transition: opacity .3s;
}
.qr-chip {
  background: rgba(26,111,245,.08); border: 1px solid rgba(26,111,245,.20);
  border-radius: 100px; padding: 6px 14px; font-size: .78rem; color: var(--blue-l);
  cursor: pointer; transition: all .22s var(--ease); font-family: var(--fb); font-weight: 500; white-space: nowrap;
}
.qr-chip:hover { background: var(--blue); border-color: var(--blue); color: #fff; transform: translateY(-1px); box-shadow: 0 4px 16px var(--glow); }
.chat-input-wrap {
  display: flex; gap: 8px; align-items: center; padding: 12px 16px;
  border-top: 1px solid rgba(26,111,245,.10); background: rgba(4,10,30,.6); flex-shrink: 0;
}
.chat-input {
  flex: 1; background: rgba(26,111,245,.07); border: 1px solid rgba(26,111,245,.14);
  border-radius: 10px; padding: 10px 14px; font-size: .85rem; color: var(--dark-text);
  font-family: var(--fb); outline: none; transition: border-color .2s;
}
.chat-input::placeholder { color: var(--dark-text3); }
.chat-input:focus { border-color: rgba(26,111,245,.35); }
.send-btn {
  width: 40px; height: 40px; background: var(--blue); border: none; border-radius: 10px;
  color: #fff; font-size: .9rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center; transition: all .22s var(--ease); flex-shrink: 0;
}
.send-btn:hover { background: var(--blue-b); box-shadow: 0 4px 20px var(--glow); transform: scale(1.05); }
.send-btn:disabled { opacity: .4; cursor: not-allowed; transform: none; }
.demo-sidebar { display: flex; flex-direction: column; gap: 14px; }
.info-panel { background: rgba(4,10,30,.85); border: 1px solid rgba(26,111,245,.14); border-radius: 16px; padding: 22px 20px; }
.info-panel-title { font-family: var(--fm); font-size: .62rem; letter-spacing: .10em; color: var(--dark-text3); text-transform: uppercase; margin-bottom: 14px; }
.info-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 0; border-bottom: 1px solid rgba(26,111,245,.06); font-size: .8rem;
}
.info-row:last-child { border-bottom: none; padding-bottom: 0; }
.info-label { color: var(--dark-text2); font-family: var(--fm); font-size: .7rem; }
.info-value { color: var(--dark-text); font-weight: 600; text-align: right; }
.info-value.green { color: #28c840; }
.info-value.blue  { color: var(--blue-l); }
.topic-panel { background: rgba(4,10,30,.85); border: 1px solid rgba(26,111,245,.14); border-radius: 16px; padding: 22px 20px; }
.topic-panel-title { font-family: var(--fm); font-size: .62rem; letter-spacing: .10em; color: var(--dark-text3); text-transform: uppercase; margin-bottom: 14px; }
.topic-btn {
  display: flex; align-items: center; gap: 10px; width: 100%;
  background: rgba(26,111,245,.06); border: 1px solid rgba(26,111,245,.12);
  border-radius: 10px; padding: 10px 12px; color: var(--dark-text2); font-size: .8rem;
  font-family: var(--fb); cursor: pointer; transition: all .2s var(--ease); margin-bottom: 7px; text-align: left;
}
.topic-btn:last-child { margin-bottom: 0; }
.topic-btn i { width: 18px; color: var(--blue-l); font-size: .8rem; flex-shrink: 0; }
.topic-btn:hover { background: rgba(26,111,245,.12); border-color: rgba(26,111,245,.25); color: var(--dark-text); transform: translateX(3px); }
.reset-btn {
  width: 100%; background: transparent; border: 1px solid rgba(255,255,255,.07);
  border-radius: 10px; padding: 10px; color: var(--dark-text3); font-family: var(--fm);
  font-size: .65rem; letter-spacing: .08em; text-transform: uppercase; cursor: pointer;
  transition: all .2s; display: flex; align-items: center; justify-content: center; gap: 6px;
}
.reset-btn:hover { border-color: rgba(255,80,80,.3); color: rgba(255,120,120,.8); }
.cta-banner {
  margin-top: 40px; background: rgba(26,111,245,.08); border: 1px solid rgba(26,111,245,.2);
  border-radius: 16px; padding: 32px 36px; text-align: center; position: relative; overflow: hidden;
}
.cta-banner::before {
  content: ''; position: absolute; top: -60px; right: -60px;
  width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(26,111,245,.15) 0%, transparent 70%);
  pointer-events: none;
}
.cta-banner-title { font-family: var(--fd); font-size: 1.4rem; font-weight: 700; color: var(--dark-text); margin-bottom: 10px; }
.cta-banner-sub { font-size: .85rem; color: var(--dark-text2); margin-bottom: 22px; max-width: 420px; margin-inline: auto; }
.btn-wa {
  display: inline-flex; align-items: center; gap: 8px; background: #25d366; color: #fff;
  font-family: var(--fd); font-weight: 600; font-size: .95rem; letter-spacing: .04em;
  padding: 13px 28px; border-radius: var(--r); border: none; cursor: pointer;
  text-decoration: none; transition: all .25s var(--ease); box-shadow: 0 4px 24px rgba(37,211,102,.25);
}
.btn-wa:hover { transform: translateY(-2px); box-shadow: 0 8px 36px rgba(37,211,102,.4); }
@media (max-width: 860px) {
  .demo-layout { grid-template-columns: 1fr; }
  .demo-sidebar { display: grid; grid-template-columns: 1fr 1fr; }
  .reset-btn { grid-column: 1/-1; }
}
@media (max-width: 560px) {
  .page { padding: 36px 16px 56px; }
  .demo-sidebar { grid-template-columns: 1fr; }
  .chat-shell { height: 500px; }
  .msg-bubble { font-size: .8rem; }
}