* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, sans-serif;
  color: #e5f3ff;
  background:
    radial-gradient(circle at top left, rgba(0, 153, 255, 0.25), transparent 35%),
    radial-gradient(circle at bottom right, rgba(99, 102, 241, 0.25), transparent 35%),
    linear-gradient(135deg, #020617, #050816, #000);
  overflow-x: hidden;
  padding: 40px;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  mask-image: linear-gradient(to bottom, black, transparent);
}

.page {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 28px;
  align-items: stretch;
}

.side-panel,
.chat-panel {
  border: 1px solid rgba(59, 130, 246, 0.45);
  background: rgba(2, 6, 23, 0.75);
  backdrop-filter: blur(18px);
  border-radius: 24px;
  box-shadow:
    0 0 50px rgba(0, 153, 255, 0.18),
    inset 0 0 30px rgba(59, 130, 246, 0.08);
}

.side-panel {
  padding: 28px;
  position: relative;
  overflow: hidden;
}

.logo {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: 1px;
  color: white;
}

.logo span {
  color: #38bdf8;
}

.tagline {
  margin-top: 10px;
  color: #93c5fd;
  line-height: 1.5;
}

.features {
  margin-top: 35px;
  display: grid;
  gap: 18px;
}

.feature {
  padding: 16px;
  border-radius: 16px;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid rgba(56, 189, 248, 0.25);
}

.feature strong {
  color: #38bdf8;
  display: block;
  margin-bottom: 5px;
}

.feature p {
  margin: 0;
  font-size: 14px;
  color: #cbd5e1;
  line-height: 1.4;
}

.stats {
  margin-top: 35px;
  padding: 22px;
  border-radius: 20px;
  border: 1px solid rgba(37, 99, 235, 0.55);
  background: linear-gradient(
    135deg,
    rgba(30, 64, 175, 0.25),
    rgba(2, 6, 23, 0.8)
  );
  text-align: center;
}

.stats h2 {
  margin: 0;
  color: #38bdf8;
  font-size: 34px;
}

.stats p {
  margin: 6px 0 0;
  color: #cbd5e1;
}

.chat-panel {
  padding: 30px;
}

.header {
  text-align: center;
  margin-bottom: 28px;
}

.header h1 {
  margin: 0;
  font-size: 48px;
  letter-spacing: 1px;
  color: white;
  text-shadow: 0 0 25px rgba(56, 189, 248, 0.35);
}

.header h1 span {
  background: linear-gradient(90deg, #38bdf8, #818cf8);
  -webkit-background-clip: text;
  color: transparent;
}

.header p {
  color: #cbd5e1;
  font-size: 17px;
}

.chat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 18px;
  border-radius: 18px 18px 0 0;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-bottom: none;
}

.chat-title {
  font-weight: 700;
  color: white;
  letter-spacing: 1px;
}

.online {
  color: #22c55e;
  font-size: 14px;
}

#chat {
  height: 420px;
  overflow-y: auto;
  padding: 22px;
  background: rgba(3, 7, 18, 0.78);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: 0 0 18px 18px;
  margin-bottom: 18px;
}

.message {
  margin-bottom: 16px;
  padding: 14px 16px;
  border-radius: 16px;
  line-height: 1.55;
  background: rgba(15, 23, 42, 0.78);
  border: 1px solid rgba(148, 163, 184, 0.15);
}

.user {
  font-weight: 800;
  color: #38bdf8;
}

.ai {
  font-weight: 800;
  color: #22c55e;
}

.booking-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 14px;
  padding: 14px 22px;
  border-radius: 14px;
  background: linear-gradient(135deg, #0284c7, #2563eb, #4f46e5);
  color: white !important;
  font-weight: 800;
  text-decoration: none;
  box-shadow: 0 0 25px rgba(37, 99, 235, 0.45);
  border: 1px solid rgba(125, 211, 252, 0.55);
  transition: all 0.2s ease;
}

.booking-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 35px rgba(37, 99, 235, 0.7);
}

.input-row {
  display: flex;
  gap: 12px;
}

input {
  flex: 1;
  padding: 16px;
  border-radius: 14px;
  border: 1px solid rgba(56, 189, 248, 0.35);
  background: rgba(15, 23, 42, 0.9);
  color: white;
  font-size: 16px;
  outline: none;
}

input::placeholder {
  color: #94a3b8;
}

button {
  padding: 16px 28px;
  border-radius: 14px;
  border: 1px solid rgba(125, 211, 252, 0.55);
  background: linear-gradient(135deg, #0284c7, #2563eb);
  color: white;
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 0 20px rgba(37, 99, 235, 0.45);
  transition: all 0.2s ease;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 30px rgba(37, 99, 235, 0.65);
}

.footer-note {
  text-align: center;
  margin-top: 18px;
  color: #94a3b8;
  font-size: 14px;
}

@media (max-width: 900px) {
  body {
    padding: 20px;
  }

  .page {
    grid-template-columns: 1fr;
  }

  .header h1 {
    font-size: 34px;
  }

  #chat {
    height: 420px;
  }
}