/* ============================================================
   HELPDESK CHAT WIDGET — Complete Stylesheet
   Uniform colors: Deep Navy #0D2B52 + Crimson Red #B91C2E + Gold #D4AF37
   ============================================================ */

:root {
  --hd-navy:    #0D2B52;
  --hd-royal:   #1B4B8A;
  --hd-crimson: #B91C2E;
  --hd-gold:    #D4AF37;
  --hd-white:   #FFFFFF;
  --hd-off:     #F6F4EF;
  --hd-border:  rgba(13,43,82,.12);
  --hd-shadow:  0 24px 64px rgba(13,43,82,.24), 0 4px 16px rgba(0,0,0,.10);
  --hd-radius:  18px;
  --hd-width:   390px;
  --hd-height:  560px;
}

/* ── Floating Action Button ── */
.hd-fab {
  position: fixed;
  bottom: 1.75rem;
  right: 1.75rem;
  z-index: 9990;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--hd-navy) 0%, var(--hd-royal) 100%);
  color: var(--hd-white);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.55rem;
  box-shadow: 0 6px 24px rgba(13,43,82,.40), 0 0 0 3px rgba(212,175,55,.35);
  transition: transform .3s cubic-bezier(.34,1.56,.64,1), box-shadow .3s ease;
  outline: none;
}
.hd-fab:hover {
  transform: scale(1.1) translateY(-2px);
  box-shadow: 0 10px 32px rgba(13,43,82,.50), 0 0 0 4px rgba(212,175,55,.50);
}
.hd-fab:active { transform: scale(.95); }
.hd-fab .hd-fab-icon-open  { display: flex; align-items: center; justify-content: center; }
.hd-fab .hd-fab-icon-close { display: none;  align-items: center; justify-content: center; }
.hd-fab.open .hd-fab-icon-open  { display: none; }
.hd-fab.open .hd-fab-icon-close { display: flex; }

/* Unread badge */
.hd-fab-badge {
  position: absolute;
  top: -5px; right: -5px;
  background: var(--hd-crimson);
  color: white;
  border-radius: 999px;
  min-width: 22px; height: 22px;
  font-size: .7rem; font-weight: 800;
  display: none; align-items: center; justify-content: center;
  padding: 0 5px;
  box-shadow: 0 2px 8px rgba(185,28,46,.40);
  animation: badge-pop .3s cubic-bezier(.34,1.56,.64,1);
  border: 2px solid white;
}
.hd-fab-badge.visible { display: flex; }
@keyframes badge-pop { from { transform: scale(0); } to { transform: scale(1); } }

/* Tooltip */
.hd-fab-tooltip {
  position: absolute;
  right: calc(100% + 14px); top: 50%;
  transform: translateY(-50%);
  background: var(--hd-navy);
  color: white;
  padding: .45rem 1rem;
  border-radius: 10px;
  font-size: .8rem; font-weight: 600;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0; transition: opacity .2s ease;
  font-family: 'Poppins', sans-serif;
  box-shadow: 0 4px 12px rgba(0,0,0,.20);
}
.hd-fab-tooltip::after {
  content: '';
  position: absolute; left: 100%; top: 50%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-left-color: var(--hd-navy);
}
.hd-fab:hover .hd-fab-tooltip { opacity: 1; }

/* ── Chat Window ── */
.hd-window {
  position: fixed;
  bottom: 5.75rem; right: 1.75rem;
  z-index: 9991;
  width: var(--hd-width);
  height: var(--hd-height);
  max-height: calc(100vh - 7rem);
  display: flex; flex-direction: column;
  background: var(--hd-white);
  border-radius: var(--hd-radius);
  box-shadow: var(--hd-shadow);
  overflow: hidden;
  border: 1px solid rgba(212,175,55,.20);
  transform-origin: bottom right;
  transform: scale(0) translateY(12px);
  opacity: 0;
  pointer-events: none;
  transition: transform .35s cubic-bezier(.34,1.56,.64,1), opacity .25s ease;
}
.hd-window.open {
  transform: scale(1) translateY(0);
  opacity: 1; pointer-events: all;
}
@media (max-width: 480px) {
  .hd-window {
    width: calc(100vw - 1.5rem);
    right: .75rem; bottom: 5rem;
    height: 75vh; max-height: 75vh;
    border-radius: 16px;
  }
  .hd-fab { bottom: 1.25rem; right: 1.25rem; }
}

/* ── Chat Header ── */
.hd-header {
  background: linear-gradient(135deg, #0D2B52 0%, #1B4B8A 60%, #0a2248 100%);
  padding: 1rem 1.25rem;
  display: flex; align-items: center; gap: .75rem;
  flex-shrink: 0;
  border-bottom: 2px solid rgba(212,175,55,.30);
  position: relative;
  overflow: hidden;
}
/* Gold diagonal stripe like uniform tie */
.hd-header::after {
  content: '';
  position: absolute; top: 0; right: 0;
  width: 80px; height: 100%;
  background: linear-gradient(135deg, transparent 50%, rgba(212,175,55,.08) 100%);
  pointer-events: none;
}
.hd-header__avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: rgba(212,175,55,.18);
  display: flex; align-items: center; justify-content: center;
  border: 2px solid rgba(212,175,55,.50);
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0,0,0,.15);
}
.hd-header__avatar img { width: 30px; height: 30px; border-radius: 50%; object-fit: cover; }
.hd-header__info { flex: 1; }
.hd-header__name {
  color: white; font-weight: 700; font-size: .92rem;
  margin: 0; font-family: 'Poppins', sans-serif;
  letter-spacing: .01em;
}
.hd-header__status {
  display: flex; align-items: center; gap: .35rem;
  font-size: .72rem; color: rgba(255,255,255,.72);
  margin-top: .15rem;
}
.hd-status-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: #4ade80;
  animation: pulse-online 2s infinite;
}
@keyframes pulse-online {
  0%,100% { box-shadow: 0 0 0 0 rgba(74,222,128,.5); }
  50%      { box-shadow: 0 0 0 5px rgba(74,222,128,0); }
}
.hd-header__close {
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.20);
  color: rgba(255,255,255,.85);
  cursor: pointer; font-size: 1rem;
  padding: .3rem .5rem; border-radius: 8px;
  transition: all .2s; position: relative; z-index: 1;
}
.hd-header__close:hover {
  background: rgba(185,28,46,.70);
  border-color: rgba(185,28,46,.80);
  color: white;
}

/* ── Intro Panel ── */
.hd-intro {
  padding: 1.25rem;
  flex: 1;
  display: flex; flex-direction: column; gap: .85rem;
  overflow-y: auto;
}
.hd-intro__school-info {
  text-align: center;
  padding: .85rem 1rem;
  background: linear-gradient(135deg, rgba(13,43,82,.06), rgba(13,43,82,.02));
  border-radius: 12px;
  border: 1px solid var(--hd-border);
}
.hd-intro__school-info p {
  font-size: .82rem; color: var(--hd-royal); margin: 0;
  font-family: 'Poppins', sans-serif; line-height: 1.5;
}
.hd-intro__form { display: flex; flex-direction: column; gap: .65rem; }
.hd-intro__form label {
  font-size: .78rem; font-weight: 700;
  color: var(--hd-navy); margin-bottom: .15rem; display: block;
  font-family: 'Poppins', sans-serif;
}
.hd-input {
  width: 100%;
  padding: .6rem .9rem;
  border: 1.5px solid var(--hd-border);
  border-radius: 10px;
  font-size: .875rem;
  font-family: 'Poppins', sans-serif;
  outline: none;
  background: var(--hd-off);
  transition: all .2s ease;
  color: var(--hd-navy);
}
.hd-input:focus {
  border-color: var(--hd-navy);
  background: white;
  box-shadow: 0 0 0 3px rgba(13,43,82,.10);
}

/* ── Messages Area ── */
.hd-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  display: flex; flex-direction: column; gap: .65rem;
  scroll-behavior: smooth;
  background: #FAFAF8;
}
.hd-messages::-webkit-scrollbar { width: 4px; }
.hd-messages::-webkit-scrollbar-track { background: transparent; }
.hd-messages::-webkit-scrollbar-thumb { background: var(--hd-border); border-radius: 2px; }

/* Message bubbles */
.hd-msg {
  display: flex; flex-direction: column;
  max-width: 82%;
  animation: msg-appear .25s ease;
}
@keyframes msg-appear {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.hd-msg.visitor { align-self: flex-end; align-items: flex-end; }
.hd-msg.admin   { align-self: flex-start; align-items: flex-start; }
.hd-msg__bubble {
  padding: .65rem 1rem;
  border-radius: 16px;
  font-size: .875rem; line-height: 1.55;
  word-break: break-word;
  font-family: 'Poppins', sans-serif;
}
.hd-msg.visitor .hd-msg__bubble {
  background: linear-gradient(135deg, var(--hd-navy), var(--hd-royal));
  color: white;
  border-bottom-right-radius: 4px;
  box-shadow: 0 2px 8px rgba(13,43,82,.20);
}
.hd-msg.admin .hd-msg__bubble {
  background: var(--hd-white);
  color: var(--hd-navy);
  border-bottom-left-radius: 4px;
  border: 1px solid var(--hd-border);
  box-shadow: 0 1px 4px rgba(13,43,82,.08);
}
.hd-msg__meta {
  font-size: .65rem; color: #9CA3AF;
  margin-top: .2rem; padding: 0 .25rem;
}
.hd-msg.visitor .hd-msg__meta { text-align: right; }

/* Typing indicator */
.hd-typing { display: none; align-self: flex-start; }
.hd-typing.visible { display: flex; }
.hd-typing__bubble {
  background: var(--hd-white);
  border: 1px solid var(--hd-border);
  border-radius: 16px; border-bottom-left-radius: 4px;
  padding: .6rem .9rem;
  display: flex; gap: 4px; align-items: center;
  box-shadow: 0 1px 4px rgba(13,43,82,.08);
}
.hd-typing__dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--hd-royal);
  animation: typing-bounce 1.2s infinite;
}
.hd-typing__dot:nth-child(2) { animation-delay: .2s; }
.hd-typing__dot:nth-child(3) { animation-delay: .4s; }
@keyframes typing-bounce {
  0%,80%,100% { transform: translateY(0); }
  40% { transform: translateY(-6px); }
}

/* Date divider */
.hd-date-divider {
  text-align: center; font-size: .68rem; color: #9CA3AF;
  padding: .25rem; position: relative;
}
.hd-date-divider::before, .hd-date-divider::after {
  content: ''; position: absolute; top: 50%;
  width: 28%; height: 1px; background: var(--hd-border);
}
.hd-date-divider::before { left: 0; }
.hd-date-divider::after  { right: 0; }

/* ══════════════════════════════════════
   INPUT AREA — PROMINENTLY STYLED
   ══════════════════════════════════════ */
.hd-input-area {
  flex-shrink: 0;
  border-top: 2px solid rgba(212,175,55,.25);
  padding: .85rem 1rem;
  display: flex; align-items: flex-end; gap: .6rem;
  background: var(--hd-white);
  box-shadow: 0 -4px 16px rgba(13,43,82,.06);
}

/* The message textarea — large and clear */
.hd-message-input {
  flex: 1;
  min-height: 52px;
  padding: .75rem 1rem;
  border: 2px solid rgba(13,43,82,.18);
  border-radius: 14px;
  font-size: .9rem;
  font-family: 'Poppins', sans-serif;
  resize: none;
  max-height: 110px;
  outline: none;
  transition: all .2s ease;
  line-height: 1.5;
  background: var(--hd-off);
  color: var(--hd-navy);
}
.hd-message-input::placeholder { color: rgba(13,43,82,.45); }
.hd-message-input:focus {
  background: #FFFFFF;
  border-color: var(--hd-navy);
  box-shadow: 0 0 0 3px rgba(13,43,82,.12);
}

/* The SEND button — bold, crimson on hover, clearly tappable */
.hd-send-btn {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--hd-navy), var(--hd-royal));
  color: white;
  border: none;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  transition: all .22s ease;
  box-shadow: 0 3px 10px rgba(13,43,82,.25);
}
.hd-send-btn:hover {
  background: linear-gradient(135deg, var(--hd-crimson), #8B0000);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(185,28,46,.35);
}
.hd-send-btn:active { transform: scale(.93); }
.hd-send-btn:disabled { opacity: .45; cursor: not-allowed; transform: none; background: #94A3B8; }

/* ── Send hint text ── */
.hd-send-hint {
  text-align: center;
  font-size: .65rem;
  color: rgba(13,43,82,.40);
  padding: 0 1rem .5rem;
  font-family: 'Poppins', sans-serif;
  flex-shrink: 0;
}

/* Footer note */
.hd-footer-note {
  text-align: center;
  font-size: .65rem; color: rgba(13,43,82,.45);
  padding: .3rem .75rem .55rem;
  flex-shrink: 0;
  font-family: 'Poppins', sans-serif;
}

/* ── Admin Help Desk Panel ── */
.hd-admin-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  height: calc(100vh - 56px);
  overflow: hidden;
}
@media (max-width: 768px) {
  .hd-admin-layout { grid-template-columns: 1fr; height: auto; }
}
.hd-admin-sidebar {
  border-right: 1px solid var(--hd-border);
  overflow-y: auto;
  background: var(--hd-white);
}
.hd-admin-sidebar__header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--hd-border);
  font-weight: 700; font-size: .95rem;
  color: var(--hd-navy);
  display: flex; justify-content: space-between; align-items: center;
  position: sticky; top: 0;
  background: var(--hd-white); z-index: 1;
  background: linear-gradient(135deg, #0D2B52, #1B4B8A);
  color: white;
}
.hd-session-item {
  padding: .85rem 1.25rem;
  border-bottom: 1px solid var(--hd-border);
  cursor: pointer; transition: background .15s;
}
.hd-session-item:hover   { background: var(--hd-off); }
.hd-session-item.active  { background: rgba(212,175,55,.10); border-left: 3px solid var(--hd-gold); }
.hd-session-item.unread  { background: rgba(13,43,82,.04); }
.hd-session-name         { font-weight: 700; font-size: .88rem; color: var(--hd-navy); }
.hd-session-preview      { font-size: .78rem; color: #9CA3AF; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 200px; }
.hd-session-time         { font-size: .72rem; color: #9CA3AF; }
.hd-session-badge {
  background: var(--hd-crimson); color: white;
  border-radius: 999px; padding: .1rem .45rem;
  font-size: .7rem; font-weight: 800;
}
.hd-admin-chat { display: flex; flex-direction: column; height: 100%; overflow: hidden; }
.hd-admin-chat__messages {
  flex: 1; overflow-y: auto; padding: 1.5rem;
  display: flex; flex-direction: column; gap: .75rem;
  background: #FAFAF8;
}
.hd-admin-chat__input {
  border-top: 2px solid rgba(212,175,55,.25);
  padding: 1rem 1.5rem;
  display: flex; gap: .75rem; align-items: flex-end;
  background: var(--hd-white);
  box-shadow: 0 -4px 16px rgba(13,43,82,.06);
  flex-shrink: 0;
}
.hd-admin-chat__input textarea {
  flex: 1;
  border: 2px solid var(--hd-border);
  border-radius: 12px;
  padding: .75rem 1rem;
  font-size: .9rem; font-family: 'Poppins', sans-serif;
  resize: none; max-height: 120px;
  outline: none; transition: border-color .2s;
  background: var(--hd-off);
  min-height: 52px;
}
.hd-admin-chat__input textarea:focus {
  border-color: var(--hd-navy);
  box-shadow: 0 0 0 3px rgba(13,43,82,.10);
  background: white;
}
.hd-empty-chat {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  height: 100%; color: #9CA3AF; gap: 1rem;
  background: var(--hd-off);
}
.hd-empty-chat i { font-size: 3.5rem; color: rgba(13,43,82,.15); }
.hd-empty-chat p { font-size: .9rem; font-family: 'Poppins', sans-serif; }