/* ═══════════════════════════════════════════════
   GUIDAMIVDA — FLOATING CHAT WIDGET
   Inspired by: 21st.dev floating-chat-widget-shadcnui
   ═══════════════════════════════════════════════ */

#gvda-chat-root {
  position: fixed;
  bottom: 90px;
  right: 24px;
  z-index: 9999;
  font-family: 'DM Sans', system-ui, sans-serif;
}

/* ── Trigger button ─────────────────────────── */
#gvda-trigger {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2c5e3f 0%, #1b3d28 100%);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 24px rgba(28,61,40,.45), 0 1px 4px rgba(0,0,0,.2);
  transition: transform .25s cubic-bezier(.34,1.56,.64,1), box-shadow .2s;
  position: relative;
}
#gvda-trigger:hover {
  transform: scale(1.08);
  box-shadow: 0 8px 32px rgba(28,61,40,.55);
}
#gvda-trigger:active { transform: scale(.96); }

#gvda-trigger-icon, #gvda-trigger-close {
  position: absolute;
  transition: opacity .2s, transform .2s cubic-bezier(.34,1.56,.64,1);
}
#gvda-trigger-close {
  opacity: 0;
  transform: rotate(-90deg) scale(.6);
}
#gvda-chat-root.open #gvda-trigger-icon {
  opacity: 0;
  transform: rotate(90deg) scale(.6);
}
#gvda-chat-root.open #gvda-trigger-close {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* AI badge */
#gvda-ai-badge {
  position: absolute;
  top: -5px;
  right: -5px;
  background: linear-gradient(135deg, #7eb8d4, #4a8fa8);
  color: #fff;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .06em;
  padding: 2px 5px;
  border-radius: 999px;
  border: 1.5px solid rgba(255,255,255,.3);
  box-shadow: 0 2px 8px rgba(74,143,168,.5);
  pointer-events: none;
  z-index: 1;
  transition: opacity .2s;
}
#gvda-chat-root.open #gvda-ai-badge { opacity: 0; }

/* Pulse ring when closed */
#gvda-trigger::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid rgba(44,94,63,.4);
  animation: gvda-pulse 2.5s ease-in-out infinite;
}
#gvda-chat-root.open #gvda-trigger::before { display: none; }

@keyframes gvda-pulse {
  0%,100% { transform: scale(1); opacity: .6; }
  50% { transform: scale(1.18); opacity: 0; }
}

/* ── Panel ──────────────────────────────────── */
#gvda-panel {
  position: absolute;
  bottom: 68px;
  right: 0;
  width: 380px;
  max-height: 560px;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(24px) saturate(1.8);
  -webkit-backdrop-filter: blur(24px) saturate(1.8);
  border-radius: 20px;
  border: 1px solid rgba(255,255,255,.7);
  box-shadow: 0 24px 64px rgba(0,0,0,.14), 0 4px 16px rgba(0,0,0,.08);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform-origin: bottom right;
  transform: scale(.88) translateY(12px);
  opacity: 0;
  pointer-events: none;
  transition: transform .28s cubic-bezier(.34,1.56,.64,1), opacity .2s ease;
}
#gvda-chat-root.open #gvda-panel {
  transform: scale(1) translateY(0);
  opacity: 1;
  pointer-events: all;
}

/* ── Header ─────────────────────────────────── */
#gvda-header {
  background: linear-gradient(135deg, #1b3d28 0%, #2c5e3f 60%, #3a7a52 100%);
  padding: 16px 18px;
  display: flex;
  align-items: center;
  gap: 11px;
  flex-shrink: 0;
}
#gvda-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,.15);
  border: 2px solid rgba(255,255,255,.3);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
}
#gvda-avatar img {
  width: 28px;
  height: 28px;
  object-fit: contain;
  filter: brightness(0) invert(1);
}
#gvda-status-dot {
  position: absolute;
  bottom: 1px;
  right: 1px;
  width: 10px;
  height: 10px;
  background: #4ade80;
  border-radius: 50%;
  border: 2px solid #1b3d28;
  animation: gvda-blink 2s ease-in-out infinite;
}
@keyframes gvda-blink {
  0%,100% { opacity: 1; }
  50% { opacity: .5; }
}
#gvda-header-info { flex: 1; min-width: 0; }
#gvda-header-name {
  font-weight: 700;
  font-size: 14.5px;
  color: #fff;
  letter-spacing: -.01em;
}
#gvda-header-sub {
  font-size: 11.5px;
  color: rgba(255,255,255,.65);
  margin-top: 1px;
}
#gvda-clear-btn {
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 8px;
  color: rgba(255,255,255,.75);
  font-size: 11px;
  font-weight: 600;
  padding: 5px 10px;
  cursor: pointer;
  transition: background .15s;
  font-family: inherit;
}
#gvda-clear-btn:hover { background: rgba(255,255,255,.22); color:#fff; }

/* ── Messages ───────────────────────────────── */
#gvda-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  scroll-behavior: smooth;
}
#gvda-messages::-webkit-scrollbar { width: 4px; }
#gvda-messages::-webkit-scrollbar-track { background: transparent; }
#gvda-messages::-webkit-scrollbar-thumb { background: rgba(0,0,0,.12); border-radius: 4px; }

.gvda-msg {
  display: flex;
  gap: 8px;
  align-items: flex-end;
  animation: gvda-msg-in .22s cubic-bezier(.34,1.56,.64,1) both;
}
@keyframes gvda-msg-in {
  from { opacity:0; transform: translateY(8px) scale(.96); }
  to   { opacity:1; transform: translateY(0) scale(1); }
}
.gvda-msg.user { flex-direction: row-reverse; }

.gvda-bubble {
  max-width: 78%;
  padding: 10px 13px;
  border-radius: 16px;
  font-size: 13.5px;
  line-height: 1.55;
  word-break: break-word;
}
.gvda-msg.bot .gvda-bubble {
  background: #f4f7f5;
  color: #16181d;
  border-bottom-left-radius: 4px;
}
.gvda-msg.user .gvda-bubble {
  background: linear-gradient(135deg, #2c5e3f, #1b3d28);
  color: #fff;
  border-bottom-right-radius: 4px;
}
.gvda-bubble a {
  color: #2c5e3f;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.gvda-msg.user .gvda-bubble a { color: #a8e6c0; }

.gvda-msg-avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: linear-gradient(135deg,#2c5e3f,#1b3d28);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 12px;
}
.gvda-msg-avatar img {
  width: 18px;
  height: 18px;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

/* Typing indicator */
.gvda-typing .gvda-bubble {
  display: flex;
  gap: 4px;
  align-items: center;
  padding: 12px 14px;
}
.gvda-dot {
  width: 7px;
  height: 7px;
  background: #9ca3af;
  border-radius: 50%;
  animation: gvda-bounce .9s ease-in-out infinite;
}
.gvda-dot:nth-child(2) { animation-delay: .15s; }
.gvda-dot:nth-child(3) { animation-delay: .3s; }
@keyframes gvda-bounce {
  0%,60%,100% { transform: translateY(0); }
  30% { transform: translateY(-5px); }
}

/* Quick replies */
#gvda-quick-replies {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 0 14px 10px;
  flex-shrink: 0;
}
.gvda-quick-btn {
  background: #f0ede8;
  border: 1px solid #e4e1db;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  color: #2c5e3f;
  cursor: pointer;
  transition: background .15s, transform .1s;
  font-family: inherit;
  white-space: nowrap;
}
.gvda-quick-btn:hover {
  background: #e6efea;
  transform: translateY(-1px);
}

/* ── Input area ─────────────────────────────── */
#gvda-input-area {
  padding: 12px 14px;
  border-top: 1px solid rgba(0,0,0,.07);
  display: flex;
  gap: 8px;
  align-items: flex-end;
  background: rgba(255,255,255,.8);
  flex-shrink: 0;
}
#gvda-input {
  flex: 1;
  border: 1.5px solid #e4e1db;
  border-radius: 12px;
  padding: 9px 13px;
  font-size: 13.5px;
  font-family: inherit;
  color: #16181d;
  background: #fafaf9;
  resize: none;
  outline: none;
  max-height: 80px;
  line-height: 1.5;
  transition: border-color .15s;
}
#gvda-input:focus { border-color: #2c5e3f; }
#gvda-input::placeholder { color: #a0a0a8; }
#gvda-send {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg,#2c5e3f,#1b3d28);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform .15s, opacity .15s;
  color: #fff;
}
#gvda-send:hover { transform: scale(1.06); }
#gvda-send:active { transform: scale(.94); }
#gvda-send:disabled { opacity: .45; cursor: default; transform: none; }

/* ── Powered by ─────────────────────────────── */
#gvda-footer {
  text-align: center;
  font-size: 10.5px;
  color: #b0b0b8;
  padding: 6px 0 10px;
  flex-shrink: 0;
}

/* ── Tablet ──────────────────────────────────── */
@media (max-width: 768px) {
  /* Lift chat trigger above the FAB "Segnala luogo" */
  #gvda-chat-root {
    bottom: 88px;
    right: 16px;
  }
  #gvda-panel {
    width: min(400px, calc(100vw - 28px));
  }
}

/* ── Mobile ──────────────────────────────────── */
@media (max-width: 480px) {
  #gvda-chat-root {
    bottom: 88px;
    right: 10px;
  }

  #gvda-panel {
    position: fixed;
    left: 8px;
    right: 8px;
    width: auto;
    bottom: 160px;
    max-height: calc(100dvh - 200px);
    border-radius: 18px;
  }

  /* Header */
  #gvda-header { padding: 13px 14px; gap: 9px; }
  #gvda-avatar { width: 34px; height: 34px; }
  #gvda-avatar img { width: 22px; height: 22px; }
  #gvda-header-name { font-size: 13.5px; }
  #gvda-header-sub { font-size: 11px; }
  #gvda-clear-btn { font-size: 10.5px; padding: 4px 9px; }

  /* Messages */
  #gvda-messages { padding: 12px 10px; gap: 8px; }
  .gvda-bubble {
    font-size: 14px;
    padding: 10px 12px;
    max-width: 85%;
  }
  .gvda-msg-avatar { width: 24px; height: 24px; }
  .gvda-msg-avatar img { width: 16px; height: 16px; }

  /* Quick replies — horizontal scroll instead of wrap */
  #gvda-quick-replies {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding: 0 10px 10px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  #gvda-quick-replies::-webkit-scrollbar { display: none; }
  .gvda-quick-btn {
    font-size: 12.5px;
    padding: 7px 13px;
    white-space: nowrap;
    flex-shrink: 0;
  }

  /* Input — font-size 16px prevents iOS auto-zoom */
  #gvda-input-area { padding: 10px; gap: 7px; }
  #gvda-input {
    font-size: 16px;
    padding: 9px 12px;
  }
  #gvda-send { width: 42px; height: 42px; border-radius: 12px; }

  /* Footer */
  #gvda-footer { font-size: 10px; padding: 5px 0 8px; }

  /* Trigger button slightly smaller */
  #gvda-trigger { width: 52px; height: 52px; }
}