:root {
  --bg: #0d1117;
  --panel: #161b22;
  --panel2: #1c2430;
  --line: #2a3341;
  --tx: #e6edf3;
  --dim: #8b97a6;
  --acc: #f2a33c;
  --acc2: #58a6ff;
  --bad: #f85149;
  --ok: #3fb950;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--tx);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans Thai", sans-serif;
  line-height: 1.7;
}

/* ---------------------------------------------------------------- login */

.login-body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 380px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 32px 28px;
}

.login-card h1 { margin: 0; font-size: 24px; letter-spacing: -0.5px; }
.login-card .sub { margin: 4px 0 24px; color: var(--dim); font-size: 14px; }

.field { display: block; margin-bottom: 16px; }
.field span { display: block; font-size: 13px; color: var(--dim); margin-bottom: 6px; }
.field input {
  width: 100%;
  padding: 10px 12px;
  background: var(--panel2);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--tx);
  font-size: 15px;
}
.field input:focus { outline: none; border-color: var(--acc2); }

.env-picker { border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; margin: 0 0 20px; }
.env-picker legend { font-size: 12px; color: var(--dim); padding: 0 6px; }
.env-opt { display: flex; align-items: center; gap: 9px; font-size: 14px; padding: 4px 0; cursor: pointer; }
.env-opt.env-prd b { color: var(--bad); }
.env-opt.env-uat b { color: var(--acc2); }

#login-btn {
  width: 100%;
  padding: 11px;
  border: 0;
  border-radius: 9px;
  background: var(--acc);
  color: #2b1a02;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}
#login-btn:disabled { opacity: 0.6; cursor: default; }

.error { color: var(--bad); font-size: 13.5px; margin: 14px 0 0; }
.note { color: var(--dim); font-size: 12px; margin: 16px 0 0; }

/* ----------------------------------------------------------------- chat */

#chat-view { display: flex; flex-direction: column; height: 100vh; max-width: 860px; margin: 0 auto; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
}
.brand { font-weight: 700; letter-spacing: -0.3px; }
.who { display: flex; align-items: center; gap: 12px; font-size: 13.5px; color: var(--dim); }
.who button {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--dim);
  border-radius: 7px;
  padding: 5px 11px;
  font-size: 12.5px;
  cursor: pointer;
}
.who button:hover { color: var(--tx); border-color: var(--dim); }

.env-badge { font-family: var(--mono); font-size: 11px; font-weight: 700; padding: 2px 9px; border-radius: 999px; }
.env-badge.is-prd { background: rgba(248, 81, 73, 0.15); color: var(--bad); border: 1px solid rgba(248, 81, 73, 0.4); }
.env-badge.is-uat { background: rgba(88, 166, 255, 0.13); color: var(--acc2); border: 1px solid rgba(88, 166, 255, 0.35); }

.prd-banner {
  background: rgba(248, 81, 73, 0.09);
  border-bottom: 1px solid rgba(248, 81, 73, 0.3);
  color: #ffb3ae;
  font-size: 13px;
  padding: 8px 18px;
}

#messages { flex: 1; overflow-y: auto; padding: 22px 18px; display: flex; flex-direction: column; gap: 14px; }

.msg { max-width: 84%; padding: 10px 15px; border-radius: 14px; font-size: 15px; }
.msg.me { align-self: flex-end; background: #1f4d7a; }
.msg.bot { align-self: flex-start; background: var(--panel); border: 1px solid var(--line); }
.msg.error-msg { border-color: rgba(248, 81, 73, 0.4); background: rgba(248, 81, 73, 0.08); color: #ffb3ae; }

.msg table { border-collapse: collapse; margin: 10px 0 4px; font-size: 13.5px; width: 100%; }
.msg th, .msg td { text-align: left; padding: 6px 10px; border-bottom: 1px solid var(--line); }
.msg th { color: var(--dim); font-size: 12px; font-weight: 600; }
.msg code { font-family: var(--mono); font-size: 13px; background: var(--panel2); padding: 1px 5px; border-radius: 4px; color: #ffa657; }

.status-line { align-self: flex-start; display: flex; align-items: center; gap: 9px; color: var(--dim); font-size: 13.5px; }
.spinner {
  width: 13px; height: 13px;
  border: 2px solid var(--line);
  border-top-color: var(--acc);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.chips { display: flex; flex-wrap: wrap; gap: 8px; padding: 0 18px 12px; }
.chip {
  background: var(--panel);
  border: 1px solid var(--line);
  color: var(--dim);
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
}
.chip:hover { color: var(--tx); border-color: var(--acc2); }

.composer { display: flex; gap: 10px; padding: 14px 18px 20px; border-top: 1px solid var(--line); }
.composer textarea {
  flex: 1;
  resize: none;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 11px;
  color: var(--tx);
  padding: 11px 14px;
  font-family: inherit;
  font-size: 15px;
  line-height: 1.5;
  max-height: 140px;
}
.composer textarea:focus { outline: none; border-color: var(--acc2); }
.composer button {
  border: 0;
  border-radius: 11px;
  background: var(--acc);
  color: #2b1a02;
  font-weight: 700;
  font-size: 15px;
  padding: 0 22px;
  cursor: pointer;
}
.composer button:disabled { opacity: 0.5; cursor: default; }

/* ปุ่มแนบรูป — สีอ่อนกว่าปุ่มส่ง เพราะเป็นทางเลือก ไม่ใช่ปุ่มหลัก */
#attach-btn {
  background: var(--panel);
  border: 1px solid var(--line);
  color: var(--tx);
  font-size: 19px;
  padding: 0 14px;
}

.attach-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 18px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--panel);
  font-size: 13px;
  color: var(--dim);
}
.attach-bar img { width: 44px; height: 44px; object-fit: cover; border-radius: 7px; }
.attach-bar span { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.attach-bar button {
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--dim);
  border: 1px solid var(--line);
  padding: 5px 10px;
  font-size: 12px;
  cursor: pointer;
}

/* ---------------------------------------------------------- ผูกบัญชี LINE */

.link-box {
  margin: 14px 18px 0;
  padding: 16px 18px;
  border: 1px solid rgba(6, 199, 85, 0.4);
  background: rgba(6, 199, 85, 0.08);
  border-radius: 12px;
}
.link-box b { font-size: 14px; }
.link-box p { margin: 8px 0 12px; font-size: 13px; color: var(--dim); }
.link-code {
  font-family: var(--mono);
  font-size: 34px;
  font-weight: 700;
  letter-spacing: 8px;
  color: #06c755;
  margin: 10px 0 0;
}
.link-box button {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--dim);
  border-radius: 7px;
  padding: 5px 14px;
  font-size: 12.5px;
  cursor: pointer;
}

.link-warn { color: #e0b341 !important; font-size: 12.5px !important; }
.link-warn b { font-family: var(--mono); color: var(--tx); }

/* ------------------------------------------------------- ตัวเลือก model */

.model-bar {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 0 18px 10px;
  font-size: 12.5px;
  color: var(--dim);
}
.model-bar label { font-family: var(--mono); }
.model-bar select {
  background: var(--panel);
  border: 1px solid var(--line);
  color: var(--tx);
  border-radius: 7px;
  padding: 5px 9px;
  font-size: 12.5px;
  font-family: inherit;
  max-width: 340px;
}
.model-note { color: #e0b341; }