/* ═══════════════════════════════
   AI Chat Page Styles
═══════════════════════════════ */
body { overflow: hidden; background: var(--bg); } /* desktop: chat fills screen */

.chat-layout {
  display: flex; flex-direction: column;
  height: 100vh; height: 100dvh;
  padding-top: 64px;
  max-width: 800px; margin: 0 auto;
  overflow: hidden;
}

/* Header */
.chat-header {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 24px;
  background: var(--white);
  border-bottom: 1px solid var(--border);
}
.chat-avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, var(--green-700), var(--green-400));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; flex-shrink: 0;
}
.chat-header-info h2 {
  font-family: var(--font-display);
  font-size: 1.1rem; font-weight: 700; color: var(--dark);
}
.chat-status { font-size: 0.78rem; color: var(--muted); }

/* Messages */
.chat-messages {
  flex: 1;
  min-height: 0; /* CRITICAL — fixes flex scroll bug */
  overflow-y: auto;
  padding: clamp(16px, 3vw, 24px) clamp(16px, 3vw, 24px) 12px;
  display: flex; flex-direction: column; gap: 16px;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}
.chat-messages::-webkit-scrollbar { width: 4px; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.msg-row {
  display: flex; gap: 10px; align-items: flex-end;
  animation: msgIn 0.25s ease;
}
@keyframes msgIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.msg-row.user { flex-direction: row-reverse; }

.msg-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--green-700);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem; flex-shrink: 0;
}
.msg-row.user .msg-avatar { background: var(--green-400); }

.msg-bubble {
  max-width: 75%; padding: clamp(10px, 2.5vw, 14px) clamp(12px, 3vw, 18px);
  border-radius: 18px 18px 18px 4px;
  font-size: clamp(0.8rem, 2.2vw, 0.9rem); line-height: 1.7; color: var(--text);
  background: var(--white); border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.msg-bubble p { margin-bottom: 8px; }
.msg-bubble p:last-child { margin-bottom: 0; }
.msg-bubble ul { padding-left: 18px; margin: 8px 0; }
.msg-bubble li { margin-bottom: 4px; }
.msg-bubble strong { color: var(--green-700); }

.user-bubble {
  background: var(--green-700); color: var(--white);
  border-radius: 18px 18px 4px 18px; border-color: transparent;
}
.user-bubble strong { color: var(--gold-lt); }

/* Typing indicator */
.typing-bubble {
  display: flex; align-items: center; gap: 5px;
  padding: clamp(10px, 2.5vw, 14px) clamp(12px, 3vw, 18px);
}
.typing-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--muted); animation: typingBounce 1.2s infinite;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes typingBounce {
  0%, 100% { transform: translateY(0); opacity: 0.4; }
  50%       { transform: translateY(-5px); opacity: 1; }
}

/* Quick Suggestions */
.quick-suggestions {
  display: flex; gap: 8px; flex-wrap: wrap;
  padding: 8px 24px;
}
.sugg-btn {
  padding: 8px 16px; border-radius: var(--radius-xl);
  background: var(--white); border: 1.5px solid var(--border);
  color: var(--green-700); font-size: clamp(0.72rem, 1.9vw, 0.82rem); font-weight: 500;
  font-family: var(--font-body); transition: var(--transition);
}
.sugg-btn:hover { background: var(--green-100); border-color: var(--green-300); }

/* Input Bar */
.chat-input-bar {
  display: flex; align-items: flex-end; gap: 10px;
  padding: 12px 24px 20px;
  background: var(--white); border-top: 1px solid var(--border);
}
#chatInput {
  flex: 1; border: 1.5px solid var(--border);
  border-radius: var(--radius-lg); padding: 12px 16px;
  font-family: var(--font-body); font-size: clamp(0.82rem, 2.2vw, 0.92rem); color: var(--text);
  outline: none; resize: none; max-height: 120px;
  transition: var(--transition); background: var(--bg); line-height: 1.5;
}
#chatInput:focus { border-color: var(--green-500); background: var(--white); }
#chatInput::placeholder { color: var(--muted); }

.send-btn {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--green-700); color: var(--white);
  font-size: 1rem; flex-shrink: 0; transition: var(--transition);
  display: flex; align-items: center; justify-content: center;
}
.send-btn:hover:not(:disabled) { background: var(--green-600); transform: scale(1.05); }
.send-btn:disabled { background: var(--border); cursor: not-allowed; }

/* Error msg */
.error-bubble {
  background: #fef2f2; border-color: #fecaca; color: #991b1b;
}

@media (max-width: 768px) {
  body { overflow: hidden; }
  .chat-layout { height: 100svh; height: 100dvh; }
  .msg-bubble { max-width: 85%; }
  .quick-suggestions { padding: 8px 16px; }
  .chat-input-bar { padding: 10px 16px 16px; }
}

/* ── TABS ── */
.chat-tabs {
  display: flex; border-bottom: 1px solid var(--border);
  background: var(--white);
}
.chat-tab {
  flex: 1; padding: 12px 8px;
  border: none; background: none;
  font-family: var(--font-body); font-size: clamp(0.78rem, 2vw, 0.88rem); font-weight: 600;
  color: var(--muted); cursor: pointer; transition: var(--transition);
  border-bottom: 2px solid transparent;
}
.chat-tab.active { color: var(--green-700); border-bottom-color: var(--green-700); }
.chat-tab:hover:not(.active) { color: var(--text); }

.chat-tab-section { display: none; }
.chat-tab-section.active {
  display: block;
  flex: 1;
  overflow-y: auto;
  min-height: 0;
}
/* Chat tab ຕ້ອງ flex ເພື່ອໃຫ້ input ຢູ່ລຸ່ມ */
#sectionChat.active {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ── TRIP PLANNER FORM ── */
.planner-intro {
  font-size: clamp(0.75rem, 2vw, 0.85rem); color: var(--muted);
  line-height: 1.6; margin-bottom: 1.25rem;
}
.planner-group { margin-bottom: 1.1rem; }
.planner-label {
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.06em;
  color: var(--muted); text-transform: uppercase;
  display: block; margin-bottom: 8px;
}
.planner-select {
  width: 100%; padding: 10px 12px;
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  font-family: var(--font-body); font-size: 0.9rem;
  background: var(--bg); color: var(--text);
}
.planner-tags { display: flex; flex-wrap: wrap; gap: 7px; }
.p-tag {
  padding: 6px 13px; border-radius: 99px;
  border: 1.5px solid var(--border);
  font-size: clamp(0.72rem, 1.9vw, 0.82rem); font-family: inherit;
  cursor: pointer; background: var(--bg); color: var(--muted);
  transition: var(--transition); user-select: none;
}
.p-tag.on { background: var(--green-100); border-color: var(--green-500); color: var(--green-700); font-weight: 600; }
.planner-chips { display: flex; gap: 7px; flex-wrap: wrap; }
.p-chip {
  padding: 7px 16px; border-radius: 99px;
  border: 1.5px solid var(--border);
  font-size: clamp(0.72rem, 1.9vw, 0.82rem); font-family: inherit;
  cursor: pointer; background: var(--bg); color: var(--muted);
  transition: var(--transition); user-select: none;
}
.p-chip.on { background: var(--green-100); border-color: var(--green-500); color: var(--green-700); font-weight: 600; }
.planner-btn {
  width: 100%; padding: clamp(10px, 2.5vw, 13px);
  border-radius: var(--radius-xl); border: none;
  background: linear-gradient(135deg, var(--green-700), var(--green-500));
  color: var(--white); font-size: 0.95rem; font-weight: 700;
  font-family: inherit; cursor: pointer;
  transition: var(--transition); margin-top: 0.25rem;
}
.planner-btn:hover { opacity: 0.9; transform: translateY(-1px); }

/* ── SPINNER ── */
.planner-spinner {
  width: 44px; height: 44px; border-radius: 50%;
  border: 3px solid var(--border); border-top-color: var(--green-500);
  animation: spin 0.8s linear infinite; display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── RESULT ── */
.planner-back-btn {
  background: none; border: none; font-family: inherit;
  font-size: clamp(0.75rem, 2vw, 0.85rem); color: var(--muted); cursor: pointer;
  margin-bottom: 1rem; padding: 0; display: block;
  transition: var(--transition);
}
.planner-back-btn:hover { color: var(--green-700); }
.plan-header { margin-bottom: 1.25rem; }
.plan-title { font-family: var(--font-display); font-size: clamp(1rem, 3vw, 1.3rem); font-weight: 700; color: var(--dark); }
.plan-meta { display: flex; gap: 6px; margin-top: 6px; flex-wrap: wrap; }
.plan-badge {
  font-size: 0.75rem; padding: 3px 10px; border-radius: 99px;
  background: var(--green-100); color: var(--green-700); font-weight: 600;
}
.plan-day { margin-bottom: 1.25rem; }
.plan-day-label {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.07em;
  color: var(--muted); text-transform: uppercase; margin-bottom: 8px;
}
.plan-stop {
  display: flex; align-items: flex-start; gap: 10px;
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 10px 12px;
  margin-bottom: 7px; cursor: pointer; transition: var(--transition);
}
.plan-stop:hover { border-color: var(--green-400); box-shadow: var(--shadow-sm); }
.plan-time { font-size: 0.75rem; color: var(--muted); min-width: 40px; padding-top: 2px; }
.plan-info { flex: 1; min-width: 0; }
.plan-name { font-size: 0.9rem; font-weight: 700; color: var(--dark); }
.plan-cat {
  display: inline-block; font-size: 0.68rem; font-weight: 700;
  color: var(--green-700); background: var(--green-100);
  padding: 1px 7px; border-radius: 99px; margin-top: 2px;
}
.plan-note { font-size: 0.78rem; color: var(--muted); margin-top: 4px; line-height: 1.5; }
.plan-pace-note {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 10px 14px;
  font-size: clamp(0.72rem, 1.9vw, 0.82rem); color: var(--muted); text-align: center;
  margin-top: 0.5rem;
}

/* ── SAVED PLAN CARDS ── */
.saved-plan-card {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 12px 14px;
  margin-bottom: 8px; cursor: pointer; transition: var(--transition);
}
.saved-plan-card:hover { border-color: var(--green-400); box-shadow: var(--shadow-sm); }
.saved-plan-info { flex: 1; }
.saved-plan-title { font-size: 0.9rem; font-weight: 700; color: var(--dark); }
.saved-plan-meta { font-size: 0.75rem; color: var(--muted); margin-top: 2px; }
.saved-plan-date { font-size: 0.72rem; color: var(--muted); margin-top: 4px; }
.saved-plan-view {
  padding: 6px 12px; border-radius: var(--radius-xl);
  background: var(--green-100); color: var(--green-700);
  border: 1px solid var(--green-300);
  font-size: 0.78rem; font-weight: 600; font-family: inherit; cursor: pointer;
}
.saved-plan-del {
  padding: 6px 10px; border-radius: var(--radius-xl);
  background: #fff0f0; color: #c0392b;
  border: 1px solid #ffc8c8;
  font-size: 0.78rem; cursor: pointer;
}

/* ── CHECKLIST + NAVIGATION ── */
.plan-stop-wrap {
  margin-bottom: 8px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
}
.plan-stop-wrap.stop-done { opacity: 0.6; }
.plan-stop-main {
  display: flex; align-items: flex-start; gap: 10px;
  background: var(--white); padding: 10px 12px;
  cursor: default;
}
.stop-check {
  font-size: 1.1rem; background: none; border: none;
  cursor: pointer; flex-shrink: 0; padding: 0;
  margin-top: 2px; transition: transform 0.1s;
  font-family: inherit;
}
.stop-check:hover { transform: scale(1.2); }
.stop-check.checked { color: var(--green-700); }
.stop-nav-btn {
  font-size: 1.2rem; text-decoration: none;
  flex-shrink: 0; padding: 2px 4px;
  border-radius: 6px; transition: var(--transition);
  margin-top: 2px;
}
.stop-nav-btn:hover { background: var(--green-100); }

.stop-next-nav {
  display: flex; align-items: center;
  justify-content: space-between; flex-wrap: wrap;
  gap: 8px; padding: 8px 14px;
  background: var(--green-50);
  border-top: 1px solid var(--green-100);
}
.stop-next-nav span { font-size: 0.78rem; color: var(--muted); }
.stop-next-btn {
  font-size: 0.8rem; font-weight: 700;
  color: var(--white); background: var(--green-700);
  padding: 6px 14px; border-radius: var(--radius-xl);
  text-decoration: none; white-space: nowrap;
  transition: var(--transition);
}
.stop-next-btn:hover { background: var(--green-600); }

/* ── v2 AI CHAT UPGRADES ── */

/* Tab active indicator slide animation */
.chat-tabs {
  position: relative;
}
.chat-tab {
  transition: color 0.2s ease, border-bottom-color 0.2s ease !important;
  position: relative;
}
.chat-tab::after {
  content: ''; position: absolute; bottom: -1px; left: 0; right: 0;
  height: 2px; background: var(--green-700);
  transform: scaleX(0); transition: transform 0.25s cubic-bezier(0.4,0,0.2,1);
  transform-origin: center;
}
.chat-tab.active::after { transform: scaleX(1); }

/* Bot message markdown-style */
.msg-bubble.bot-bubble h3,
.msg-bubble.bot-bubble h4 {
  font-size: 0.9rem; font-weight: 700; color: var(--dark);
  margin: 10px 0 4px;
}
.msg-bubble.bot-bubble code {
  background: var(--green-50); color: var(--green-700);
  padding: 1px 5px; border-radius: 4px; font-size: 0.82rem;
}
.msg-bubble.bot-bubble hr {
  border: none; border-top: 1px solid var(--border); margin: 10px 0;
}

/* Suggestion buttons springy hover */
.sugg-btn {
  transition: all 0.22s cubic-bezier(0.34,1.56,0.64,1) !important;
}
.sugg-btn:hover {
  background: var(--green-100) !important;
  border-color: var(--green-400) !important;
  transform: translateY(-2px) scale(1.02) !important;
}

/* Send button pulse on hover */
.send-btn:hover:not(:disabled) {
  transform: scale(1.08) !important;
  box-shadow: 0 4px 16px rgba(16,80,160,0.3) !important;
}

/* Input bar focus ring on textarea */
#chatInput:focus {
  box-shadow: 0 0 0 3px rgba(37,137,224,0.15) !important;
}

/* Trip planner tag/chip springy */
.p-tag, .p-chip {
  transition: all 0.22s cubic-bezier(0.34,1.56,0.64,1) !important;
}
.p-tag:hover, .p-chip:hover { transform: translateY(-1px) !important; }
.p-tag.on, .p-chip.on { transform: translateY(-1px) scale(1.02) !important; }

/* Planner button pulse */
.planner-btn {
  transition: all 0.25s cubic-bezier(0.34,1.56,0.64,1) !important;
  box-shadow: 0 4px 16px rgba(16,80,160,0.2) !important;
}
.planner-btn:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 24px rgba(16,80,160,0.3) !important;
  opacity: 1 !important;
}

/* Plan stop cards */
.plan-stop {
  transition: all 0.22s cubic-bezier(0.34,1.56,0.64,1) !important;
}
.plan-stop:hover {
  transform: translateX(4px) !important;
  border-color: var(--green-400) !important;
  box-shadow: var(--shadow-sm) !important;
}

/* Online indicator pulse */
.chat-status::before {
  content: ''; display: inline-block;
  width: 7px; height: 7px; border-radius: 50%;
  background: #10b981; margin-right: 5px;
  animation: onlinePulse 2s ease-in-out infinite;
  vertical-align: middle;
}
/* hide old 🟢 emoji when pseudo-element takes over */

@keyframes onlinePulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.3); }
}

/* ── TYPEWRITER CURSOR ── */
.cursor-blink {
  display: inline-block;
  animation: cursorBlink 0.65s step-end infinite;
  color: rgba(255,255,255,0.7);
  font-weight: 300;
  margin-left: 2px;
}
@keyframes cursorBlink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* ── SEND BUTTON PULSE when loading ── */
#sendBtn:disabled {
  animation: sendPulse 1.2s ease-in-out infinite;
}
@keyframes sendPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(37,137,224,0.3); }
  50%       { box-shadow: 0 0 0 8px rgba(37,137,224,0); }
}

/* ── CHAT INPUT FOCUS GLOW ── */
.chat-input-bar:focus-within {
  box-shadow: 0 0 0 3px rgba(56,189,248,0.2);
}

/* ── MESSAGE BUBBLE APPEAR ── */
.msg-row {
  animation: msgSlideIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}
.msg-row.user { animation-name: msgSlideInRight; }

@keyframes msgSlideIn {
  from { opacity: 0; transform: translateX(-10px) translateY(6px); }
  to   { opacity: 1; transform: translateX(0) translateY(0); }
}
@keyframes msgSlideInRight {
  from { opacity: 0; transform: translateX(10px) translateY(6px); }
  to   { opacity: 1; transform: translateX(0) translateY(0); }
}

/* ── ERROR BUBBLE ── */
.error-bubble {
  background: #fef2f2 !important;
  color: #991b1b !important;
  border: 1px solid #fecaca !important;
}

@keyframes fadeIn { from{opacity:0} to{opacity:1} }