/* ── HD Robotics Support Chatbot Styles ────────────────────────────── */
:root {
  --bg:      #040A14;
  --bg2:     #0B1628;
  --bg3:     #111E35;
  --g:       #3BB44A;
  --b:       #1C56D4;
  --w:       #FFFFFF;
  --mu:      #7A8FB0;
  --bdr:     rgba(255,255,255,0.08);
  --gdim:    rgba(59,180,74,0.12);
  --gglow:   rgba(59,180,74,0.25);
  --shadow:  0 24px 64px rgba(0,0,0,0.6), 0 4px 16px rgba(0,0,0,0.4);
  --radius:  14px;
}

/* ── Trigger button ──────────────────────────────────────────────────── */
.hdr-trigger {
  position: fixed;
  bottom: 28px; right: 28px;
  z-index: 9000;
  display: flex; align-items: center; gap: 9px;
  background: var(--bg2);
  border: 1.5px solid rgba(59,180,74,0.35);
  color: var(--w);
  padding: 13px 20px 13px 16px;
  border-radius: 50px;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-size: 14px; font-weight: 600;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5), 0 0 0 1px rgba(59,180,74,0.1);
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.hdr-trigger:hover {
  transform: translateY(-2px);
  border-color: var(--g);
  box-shadow: 0 12px 40px rgba(0,0,0,0.5), 0 0 24px var(--gglow);
}
.hdr-trigger svg { color: var(--g); flex-shrink: 0; }
.hdr-trigger-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--g);
  box-shadow: 0 0 8px var(--g);
  animation: hdr-pulse 2s infinite;
}
@keyframes hdr-pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50%      { opacity: .6; transform: scale(1.3); }
}

/* ── Chat window ─────────────────────────────────────────────────────── */
.hdr-window {
  position: fixed;
  /* safe-area-inset-top: 노치/상단바 있는 기기에서 헤더 잘림 방지 */
  top: max(12px, env(safe-area-inset-top, 12px));
  bottom: max(88px, calc(env(safe-area-inset-bottom, 0px) + 88px));
  right: max(28px, env(safe-area-inset-right, 28px));
  z-index: 9001;
  width: 380px;
  max-width: calc(100vw - 56px);
  display: flex; flex-direction: column;
  background: var(--bg2);
  border: 1px solid var(--bdr);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transform-origin: bottom right;
  animation: hdr-open .22s cubic-bezier(.34,1.56,.64,1);
}
.hdr-window[hidden] { display: none !important; }
@keyframes hdr-open {
  from { opacity: 0; transform: scale(.92) translateY(12px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

/* ── Header ──────────────────────────────────────────────────────────── */
.hdr-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 18px;
  background: linear-gradient(135deg, #080F20 0%, #0D1A32 100%);
  border-bottom: 1px solid var(--bdr);
  flex-shrink: 0;
}
.hdr-header-left { display: flex; align-items: center; gap: 12px; }
.hdr-avatar {
  width: 38px; height: 38px; border-radius: 50%;
  background: linear-gradient(135deg, var(--b) 0%, #0D3A9E 100%);
  display: flex; align-items: center; justify-content: center;
  color: var(--w); flex-shrink: 0;
  box-shadow: 0 0 16px rgba(28,86,212,0.4);
}
.hdr-header-title { font-size: 14px; font-weight: 700; color: var(--w); }
.hdr-header-sub {
  font-size: 11px; color: var(--mu); margin-top: 2px;
  display: flex; align-items: center; gap: 5px;
}
.hdr-online-dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--g);
  box-shadow: 0 0 6px var(--g);
}
.hdr-close {
  background: none; border: none; cursor: pointer;
  color: var(--mu); padding: 4px; border-radius: 6px;
  transition: color .15s, background .15s;
}
.hdr-close:hover { color: var(--w); background: rgba(255,255,255,0.06); }

/* ── Messages ────────────────────────────────────────────────────────── */
.hdr-messages {
  flex: 1; overflow-y: auto; padding: 18px 16px;
  display: flex; flex-direction: column; gap: 12px;
  scroll-behavior: smooth;
}
.hdr-messages::-webkit-scrollbar { width: 4px; }
.hdr-messages::-webkit-scrollbar-track { background: transparent; }
.hdr-messages::-webkit-scrollbar-thumb { background: var(--bdr); border-radius: 4px; }

.hdr-msg {
  display: flex; gap: 8px; align-items: flex-end;
  animation: hdr-msgIn .18s ease;
}
@keyframes hdr-msgIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.hdr-msg.user { flex-direction: row-reverse; }

.hdr-msg-bubble {
  max-width: 82%;
  padding: 11px 14px;
  border-radius: 14px;
  font-size: 13.5px; line-height: 1.55;
  white-space: pre-wrap; word-break: break-word;
}
.hdr-msg.bot .hdr-msg-bubble {
  background: var(--bg3);
  border: 1px solid var(--bdr);
  color: var(--w);
  border-bottom-left-radius: 4px;
}
.hdr-msg.user .hdr-msg-bubble {
  background: linear-gradient(135deg, var(--b) 0%, #0D3A9E 100%);
  color: var(--w);
  border-bottom-right-radius: 4px;
}

.hdr-msg-ico {
  width: 26px; height: 26px; border-radius: 50%; flex-shrink: 0;
  background: var(--bg3); border: 1px solid var(--bdr);
  display: flex; align-items: center; justify-content: center;
  color: var(--g); font-size: 12px;
}

/* Typing indicator */
.hdr-typing .hdr-msg-bubble {
  padding: 14px 16px;
  display: flex; gap: 5px; align-items: center;
}
.hdr-dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--mu);
  animation: hdr-bounce .9s infinite;
}
.hdr-dot:nth-child(2) { animation-delay: .15s; }
.hdr-dot:nth-child(3) { animation-delay: .30s; }
@keyframes hdr-bounce {
  0%,80%,100% { transform: translateY(0); opacity:.5; }
  40%          { transform: translateY(-5px); opacity:1; }
}

/* ── Quick replies ───────────────────────────────────────────────────── */
.hdr-quick {
  padding: 0 16px 12px;
  display: flex; flex-wrap: wrap; gap: 6px;
  flex-shrink: 0;
}
.hdr-quick[hidden] { display: none; }
.hdr-chip {
  background: transparent;
  border: 1px solid rgba(59,180,74,0.3);
  color: var(--g);
  padding: 7px 13px; border-radius: 50px;
  font-size: 12px; font-weight: 500; cursor: pointer;
  font-family: 'Inter', sans-serif;
  transition: background .15s, border-color .15s, color .15s;
  white-space: nowrap;
}
.hdr-chip:hover {
  background: var(--gdim); border-color: var(--g); color: var(--w);
}

/* ── Escalation form ─────────────────────────────────────────────────── */
.hdr-form {
  padding: 16px;
  border-top: 1px solid var(--bdr);
  display: flex; flex-direction: column; gap: 8px;
  background: var(--bg2);
  overflow-y: auto; max-height: 380px;
}
.hdr-form[hidden] { display: none; }
.hdr-form-title {
  font-size: 13px; font-weight: 700; color: var(--w); margin-bottom: 4px;
}
.hdr-input-field {
  width: 100%; padding: 10px 13px;
  background: var(--bg3); border: 1px solid var(--bdr);
  border-radius: 9px; color: var(--w);
  font-family: 'Inter', sans-serif; font-size: 13px;
  outline: none; transition: border-color .15s;
  box-sizing: border-box;
}
.hdr-input-field::placeholder { color: var(--mu); }
.hdr-input-field:focus { border-color: rgba(59,180,74,0.5); }
select.hdr-input-field { appearance: none; cursor: pointer; }
select.hdr-input-field option { background: #0B1628; }

/* ── Input row ───────────────────────────────────────────────────────── */
.hdr-input-row {
  display: flex; align-items: flex-end; gap: 8px;
  padding: 12px 14px;
  border-top: 1px solid var(--bdr);
  background: var(--bg2);
  flex-shrink: 0;
}
.hdr-textarea {
  flex: 1; resize: none; overflow: hidden;
  background: var(--bg3); border: 1px solid var(--bdr);
  border-radius: 10px; color: var(--w);
  font-family: 'Inter', sans-serif; font-size: 13.5px; line-height: 1.5;
  padding: 10px 13px; outline: none;
  min-height: 40px; max-height: 120px;
  transition: border-color .15s;
}
.hdr-textarea::placeholder { color: var(--mu); }
.hdr-textarea:focus { border-color: rgba(59,180,74,0.4); }

.hdr-send-btn {
  background: linear-gradient(135deg, var(--g) 0%, #2A9437 100%);
  border: none; color: var(--w);
  padding: 10px 18px; border-radius: 10px;
  font-family: 'Inter', sans-serif; font-size: 13px; font-weight: 600;
  cursor: pointer; white-space: nowrap;
  transition: opacity .15s, transform .1s;
  width: 100%;
}
.hdr-send-btn:hover { opacity: .9; }
.hdr-send-btn:active { transform: scale(.97); }
.hdr-send-btn:disabled { opacity: .4; cursor: not-allowed; }

.hdr-send-btn.hdr-send-icon {
  width: 40px; height: 40px; padding: 0;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; border-radius: 10px;
}

.hdr-link-btn {
  background: none; border: none; color: var(--mu);
  font-family: 'Inter', sans-serif; font-size: 12px;
  cursor: pointer; text-align: center; padding: 4px;
  transition: color .15s;
}
.hdr-link-btn:hover { color: var(--w); }

/* ── Success state ───────────────────────────────────────────────────── */
.hdr-success {
  padding: 32px 24px; text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 12px;
}
.hdr-success-ico {
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--gdim); border: 1px solid rgba(59,180,74,0.3);
  display: flex; align-items: center; justify-content: center;
  color: var(--g); font-size: 22px;
}
.hdr-success h3 { color: var(--w); font-size: 15px; margin: 0; }
.hdr-success p  { color: var(--mu); font-size: 13px; margin: 0; line-height: 1.5; }

/* ── Responsive ──────────────────────────────────────────────────────── */
@media (max-width: 440px) {
  .hdr-window {
    top: max(8px, env(safe-area-inset-top, 8px));
    bottom: max(80px, calc(env(safe-area-inset-bottom, 0px) + 80px));
    right: 10px;
    left: 10px;
    width: auto;
    max-width: none;
  }
  .hdr-trigger { right: 16px; bottom: 16px; }
}