/* PiTi Chat Widget v2.0.0 */
:root {
  --piti-bg: #ffffff;
  --piti-surface: #f5f5f7;
  --piti-border: #d2d2d7;
  --piti-text: #1d1d1f;
  --piti-text-2: #6e6e73;
  --piti-accent: #0071e3;
  --piti-accent-h: #0077ed;
  --piti-dark: #1d1d1f;
  --piti-shadow: 0 8px 32px rgba(0,0,0,0.14), 0 2px 8px rgba(0,0,0,0.08);
  --piti-r: 18px;
  --piti-font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
}

/* ── Trigger ── */
#piti-trigger {
  position: fixed;
  bottom: 24px; right: 24px;
  width: 60px; height: 60px;
  border-radius: 50%;
  background: var(--piti-dark);
  border: none; cursor: grab;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 2px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.28);
  transition: transform 0.2s, box-shadow 0.2s;
  z-index: 9998; user-select: none;
}
#piti-trigger:hover  { transform: scale(1.07); box-shadow: 0 6px 24px rgba(0,0,0,0.36); }
#piti-trigger:active { cursor: grabbing; transform: scale(0.95); }
#piti-trigger svg    { width:24px; height:24px; fill:none; stroke:#fff; stroke-width:1.8; stroke-linecap:round; stroke-linejoin:round; }
#piti-label { font-family:var(--piti-font); font-size:8px; font-weight:700; color:rgba(255,255,255,0.85); letter-spacing:0.04em; text-transform:uppercase; }

/* ── Window ── */
#piti-window {
  position: fixed;
  bottom: 94px; right: 24px;
  width: 360px; height: 540px;
  min-width: 300px; min-height: 400px;
  background: var(--piti-bg);
  border-radius: var(--piti-r);
  box-shadow: var(--piti-shadow);
  display: flex; flex-direction: column;
  overflow: hidden; z-index: 9999;
  opacity: 0; transform: translateY(16px) scale(0.97);
  pointer-events: none;
  transition: opacity 0.22s, transform 0.22s;
  font-family: var(--piti-font);
}
#piti-window.open   { opacity:1; transform:none; pointer-events:all; }
#piti-window.fullscreen {
  bottom:0!important; right:0!important; left:0!important; top:0!important;
  width:100%!important; height:100%!important;
  border-radius:0!important; min-width:0; min-height:0;
}

/* ── Resize handle ── */
#piti-resize-handle {
  position: fixed;
  display: none;
  width: 20px; height: 20px;
  bottom: 94px; right: 24px;
  cursor: nwse-resize;
  z-index: 10000;
}
#piti-resize-handle.open { display: block; }
#piti-resize-handle::after {
  content: '';
  position: absolute;
  right: 4px; bottom: 4px;
  width: 10px; height: 10px;
  border-right: 2px solid var(--piti-border);
  border-bottom: 2px solid var(--piti-border);
}

/* ── Header ── */
#piti-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 13px 16px;
  background: var(--piti-dark); flex-shrink: 0;
}
.piti-header-left  { display:flex; align-items:center; gap:10px; }
.piti-avatar       { width:34px; height:34px; border-radius:50%; background:rgba(255,255,255,0.12); display:flex; align-items:center; justify-content:center; font-size:16px; }
.piti-header-info h3 { margin:0; font-size:13.5px; font-weight:600; color:#fff; }
.piti-header-info p  { margin:0; font-size:11px; color:rgba(255,255,255,0.55); }
.piti-dot { display:inline-block; width:6px; height:6px; border-radius:50%; background:#34c759; margin-right:4px; vertical-align:middle; }
.piti-header-actions { display:flex; align-items:center; gap:4px; }
#piti-fullscreen, #piti-close {
  background:none; border:none; cursor:pointer;
  color:rgba(255,255,255,0.6); display:flex; align-items:center;
  padding:4px; border-radius:6px; transition:color 0.15s;
}
#piti-fullscreen:hover, #piti-close:hover { color:#fff; }
#piti-fullscreen svg, #piti-close svg { width:18px; height:18px; stroke:currentColor; stroke-width:2; stroke-linecap:round; fill:none; }

/* ── Messages ── */
#piti-messages {
  flex:1; overflow-y:auto; padding:14px 14px 8px;
  display:flex; flex-direction:column; gap:10px; scroll-behavior:smooth;
}
#piti-messages::-webkit-scrollbar { width:3px; }
#piti-messages::-webkit-scrollbar-thumb { background:var(--piti-border); border-radius:2px; }

.piti-msg { display:flex; flex-direction:column; max-width:85%; animation:pitiFade 0.18s ease; }
.piti-msg.user { align-self:flex-end; align-items:flex-end; }
.piti-msg.bot  { align-self:flex-start; align-items:flex-start; }
@keyframes pitiFade { from{opacity:0;transform:translateY(6px)} to{opacity:1;transform:none} }

.piti-bubble {
  padding:9px 13px; border-radius:14px;
  font-size:13.5px; line-height:1.5; word-break:break-word;
}
.piti-msg.user .piti-bubble { background:var(--piti-accent); color:#fff; border-bottom-right-radius:4px; }
.piti-msg.bot  .piti-bubble { background:var(--piti-surface); color:var(--piti-text); border-bottom-left-radius:4px; }
.piti-bubble a { color:var(--piti-accent); text-decoration:none; font-weight:500; }
.piti-bubble a:hover { text-decoration:underline; }

/* ── Topic Buttons ── */
.piti-topics {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 8px; padding: 4px 0; align-self: stretch;
}
.piti-topic-btn {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 12px;
  background: var(--piti-bg);
  border: 1.5px solid var(--piti-border);
  border-radius: 12px; cursor: pointer;
  font-family: var(--piti-font); font-size: 12.5px; font-weight: 500;
  color: var(--piti-text); text-align: left;
  transition: border-color 0.15s, background 0.15s;
}
.piti-topic-btn:hover { border-color: var(--piti-accent); background: #f0f7ff; }
.piti-topic-icon { font-size: 16px; }

/* ── Follow-up ── */
.piti-followup { align-self: stretch; padding: 4px 0; }
.piti-followup p { font-size:11.5px; color:var(--piti-text-2); margin:0 0 6px; }
.piti-followup { display: flex; flex-direction: column; gap: 4px; }
.piti-followup-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 12px;
  background: var(--piti-surface);
  border: 1px solid var(--piti-border);
  border-radius: 20px; cursor: pointer;
  font-family: var(--piti-font); font-size: 12px;
  color: var(--piti-text); text-align: left;
  transition: background 0.15s, border-color 0.15s;
}
.piti-followup-btn:hover { background: #f0f7ff; border-color: var(--piti-accent); }

/* ── Forms ── */
.piti-form-bubble { background: var(--piti-bg)!important; border: 1.5px solid var(--piti-border)!important; }
.piti-form-title  { margin:0 0 10px; font-size:13px; font-weight:600; }
.piti-form-bubble input {
  width: 100%; box-sizing: border-box;
  padding: 8px 10px; margin-bottom: 8px;
  border: 1.5px solid var(--piti-border); border-radius: 10px;
  font-size: 13px; font-family: var(--piti-font);
  color: var(--piti-text); background: var(--piti-surface); outline: none;
  transition: border-color 0.15s;
}
.piti-form-bubble input:focus { border-color: var(--piti-accent); background: #fff; }
.piti-form-bubble input[readonly] { opacity: 0.6; cursor: not-allowed; }
.piti-form-bubble button {
  width: 100%; padding: 9px;
  background: var(--piti-accent); color: #fff;
  border: none; border-radius: 10px;
  font-family: var(--piti-font); font-size: 13px; font-weight: 600;
  cursor: pointer; transition: background 0.15s;
}
.piti-form-bubble button:hover { background: var(--piti-accent-h); }

/* ── Order Card ── */
.piti-order-card { background: var(--piti-bg)!important; border: 1.5px solid var(--piti-border)!important; }
.piti-order-header { display:flex; justify-content:space-between; align-items:center; margin-bottom:4px; }
.piti-order-status { font-size:12px; font-weight:600; }
.piti-order-meta   { font-size:11.5px; color:var(--piti-text-2); margin-bottom:6px; }
.piti-order-items  { font-size:12px; color:var(--piti-text); line-height:1.6; }

/* ── Transfer Button ── */
.piti-transfer-btn {
  display:inline-flex; align-items:center; gap:6px; margin-top:8px;
  padding:8px 14px; background:#34c759; color:#fff;
  border:none; border-radius:20px;
  font-family:var(--piti-font); font-size:12.5px; font-weight:600;
  cursor:pointer; transition:background 0.15s;
}
.piti-transfer-btn:hover { background:#2db350; }

/* ── Typing ── */
.piti-typing { display:flex; gap:4px; padding:11px 13px; background:var(--piti-surface); border-radius:14px; border-bottom-left-radius:4px; }
.piti-typing span { width:6px; height:6px; background:var(--piti-text-2); border-radius:50%; animation:pitiDot 1.2s infinite; }
.piti-typing span:nth-child(2) { animation-delay:0.2s; }
.piti-typing span:nth-child(3) { animation-delay:0.4s; }
@keyframes pitiDot { 0%,60%,100%{transform:translateY(0);opacity:0.4} 30%{transform:translateY(-5px);opacity:1} }

/* ── Input ── */
#piti-input-area { display:flex; align-items:flex-end; gap:8px; padding:10px 12px 13px; border-top:1px solid var(--piti-border); background:var(--piti-bg); flex-shrink:0; }
#piti-input { flex:1; border:1.5px solid var(--piti-border); border-radius:20px; padding:9px 14px; font-size:13.5px; font-family:var(--piti-font); color:var(--piti-text); background:var(--piti-surface); outline:none; resize:none; max-height:90px; line-height:1.4; transition:border-color 0.15s; }
#piti-input:focus { border-color:var(--piti-accent); background:#fff; }
#piti-input::placeholder { color:var(--piti-text-2); }
#piti-send { width:36px; height:36px; border-radius:50%; background:var(--piti-accent); border:none; cursor:pointer; display:flex; align-items:center; justify-content:center; flex-shrink:0; transition:background 0.15s; }
#piti-send:hover { background:var(--piti-accent-h); }
#piti-send:disabled { background:var(--piti-border); cursor:not-allowed; }
#piti-send svg { width:15px; height:15px; fill:none; stroke:#fff; stroke-width:2; stroke-linecap:round; stroke-linejoin:round; }

/* ── Footer ── */
#piti-footer { padding:6px 14px 10px; text-align:center; font-size:10.5px; color:var(--piti-text-2); border-top:1px solid var(--piti-border); flex-shrink:0; }

/* ── Mobile ── */
@media (max-width:420px) {
  #piti-window { right:0; bottom:0; width:100%; height:100%; border-radius:0; }
  #piti-trigger { bottom:16px; right:16px; }
  .piti-topics { grid-template-columns:1fr; }
}