:root {
  --bg: #f4f7fb;
  --card: #ffffff;
  --accent: #27ae60;
  --muted: #6b7280;
}

/* RESET */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, Arial, sans-serif;
  background: var(--bg);
  color: #111;
}

/* HEADER */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  background: linear-gradient(90deg, #ffffff, #fbfdfe);
  border-bottom: 1px solid #eee;
}

.brand {
  font-weight: 700;
  font-size: 18px;
}

.nav a {
  margin-left: 12px;
  text-decoration: none;
  color: var(--muted);
  font-weight: 500;
}

.nav a:hover {
  color: var(--accent);
}

/* LAYOUT */
.container {
  max-width: 1100px;
  margin: 22px auto;
  padding: 12px;
}

.chat-grid {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 20px;
}

/* CARDS */
.chat-panel,
.side-panel {
  background: var(--card);
  border-radius: 12px;
  padding: 14px;
  box-shadow: 0 8px 24px rgba(16, 24, 40, 0.06);
}

/* CHAT */
.chat-box {
  height: 360px;
  overflow-y: auto;
  border: 1px solid #eef2f7;
  border-radius: 8px;
  padding: 12px;
  background: #fcfeff;
}

.user-msg {
  text-align: right;
  margin: 8px 0;
  color: #0f172a;
}

.bot-msg {
  text-align: left;
  margin: 8px 0;
  color: #064e3b;
}

.input-row {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

#user-input,
#order_id {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #e6eef6;
}

#send-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 10px 14px;
  border-radius: 8px;
  cursor: pointer;
}

#send-btn:hover {
  opacity: 0.9;
}

/* META */
.meta {
  display: flex;
  gap: 14px;
  margin-top: 12px;
  color: var(--muted);
}

/* NEGATIVES */
.negative-box {
  height: 180px;
  overflow-y: auto;
  border: 1px solid #fdecea;
  background: #fff5f5;
  padding: 8px;
  border-radius: 8px;
}

/* FLASH MESSAGES */
.flashes .flash {
  padding: 10px;
  border-radius: 6px;
  margin-bottom: 8px;
}

.flash.success {
  background: #e6ffed;
  color: #0b6a3a;
}

.flash.warning {
  background: #fff7e6;
  color: #7a4d00;
}

.flash.danger {
  background: #ffe6e6;
  color: #912d2d;
}

/* HOME */
.home-grid {
  display: flex;
  gap: 20px;
}

.home-right {
  width: 420px;
}

.btn {
  display: inline-block;
  padding: 10px 14px;
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
  text-decoration: none;
}

.btn.ghost {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

/* FOOTER */
.footer {
  padding: 12px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  margin-top: 18px;
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .chat-grid {
    grid-template-columns: 1fr;
  }

  .home-grid {
    flex-direction: column;
  }
}