/* ============================================================
   🌟 น้องตาหวาน Chatbot Widget - CSS
   โรงเรียนนาแห้ววิทยา (Nahaew Wittaya School)
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  --tw-primary: #7B2D8E;
  --tw-primary-light: #A349A4;
  --tw-primary-dark: #5C1E6E;
  --tw-accent: #E91E8C;
  --tw-gold: #FFD700;
  --tw-gold-light: #FFF3B0;
  --tw-bg-chat: #F8F0FC;
  --tw-bg-msg-bot: #FFFFFF;
  --tw-bg-msg-user: linear-gradient(135deg, #A349A4, #7B2D8E);
  --tw-text-dark: #2D1B36;
  --tw-text-light: #FFFFFF;
  --tw-text-muted: #8A7A8F;
  --tw-border: #E8D5F0;
  --tw-shadow: 0 8px 32px rgba(123, 45, 142, 0.25);
  --tw-shadow-sm: 0 2px 12px rgba(123, 45, 142, 0.15);
  --tw-radius: 20px;
  --tw-radius-sm: 14px;
  --tw-transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Floating Button (Mascot) ---------- */
#tawan-chatbot-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 99999;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 3px solid var(--tw-gold);
  background: linear-gradient(145deg, #A349A4, #7B2D8E);
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(123, 45, 142, 0.4),
              0 0 0 0 rgba(163, 73, 164, 0.4);
  transition: var(--tw-transition);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  animation: tawan-pulse 2.5s infinite;
}

#tawan-chatbot-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 28px rgba(123, 45, 142, 0.55);
}

#tawan-chatbot-btn img {
  width: 56px;
  height: 56px;
  object-fit: contain;
  pointer-events: none;
}

/* Notification badge */
#tawan-chatbot-btn .tawan-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 22px;
  height: 22px;
  background: var(--tw-accent);
  border-radius: 50%;
  border: 2px solid #FFF;
  color: #FFF;
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: tawan-bounce 0.6s ease;
}

/* Close icon when chat is open */
#tawan-chatbot-btn .tawan-close-icon {
  display: none;
  font-size: 28px;
  color: #FFF;
  font-weight: 300;
  line-height: 1;
}

#tawan-chatbot-btn.active img {
  display: none;
}

#tawan-chatbot-btn.active .tawan-close-icon {
  display: flex;
}

#tawan-chatbot-btn.active .tawan-badge {
  display: none;
}

/* Pulse animation */
@keyframes tawan-pulse {
  0% { box-shadow: 0 4px 20px rgba(123, 45, 142, 0.4), 0 0 0 0 rgba(163, 73, 164, 0.4); }
  70% { box-shadow: 0 4px 20px rgba(123, 45, 142, 0.4), 0 0 0 15px rgba(163, 73, 164, 0); }
  100% { box-shadow: 0 4px 20px rgba(123, 45, 142, 0.4), 0 0 0 0 rgba(163, 73, 164, 0); }
}

@keyframes tawan-bounce {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.3); }
}

/* ---------- Chat Window ---------- */
#tawan-chatbot-window {
  position: fixed;
  bottom: 108px;
  right: 24px;
  z-index: 99998;
  width: 400px;
  max-width: calc(100vw - 32px);
  height: 580px;
  max-height: calc(100vh - 140px);
  background: var(--tw-bg-chat);
  border-radius: var(--tw-radius);
  box-shadow: var(--tw-shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  transform: translateY(20px) scale(0.95);
  pointer-events: none;
  transition: opacity 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  font-family: 'Kanit', sans-serif;
}

#tawan-chatbot-window.open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: all;
}

/* ---------- Chat Header ---------- */
.tawan-chat-header {
  background: linear-gradient(135deg, var(--tw-primary), var(--tw-primary-dark));
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
  flex-shrink: 0;
}

.tawan-chat-header::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  right: 0;
  height: 8px;
  background: linear-gradient(to bottom, rgba(123, 45, 142, 0.08), transparent);
}

.tawan-header-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 2px solid var(--tw-gold);
  overflow: hidden;
  flex-shrink: 0;
  background: rgba(255,255,255,0.15);
}

.tawan-header-avatar img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.tawan-header-info {
  flex: 1;
  min-width: 0;
}

.tawan-header-name {
  color: var(--tw-text-light);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.2;
  margin: 0;
}

.tawan-header-status {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-top: 2px;
}

.tawan-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ADE80;
  animation: tawan-status-pulse 2s infinite;
}

@keyframes tawan-status-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.tawan-header-status span {
  color: rgba(255, 255, 255, 0.8);
  font-size: 12px;
  font-weight: 300;
}

.tawan-header-close {
  background: rgba(255, 255, 255, 0.15);
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  color: #FFF;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--tw-transition);
  flex-shrink: 0;
}

.tawan-header-close:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: rotate(90deg);
}

/* ---------- Quick Action Buttons ---------- */
.tawan-quick-actions {
  display: flex;
  gap: 8px;
  padding: 14px 16px 8px;
  overflow-x: auto;
  flex-shrink: 0;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.tawan-quick-actions::-webkit-scrollbar {
  display: none;
}

.tawan-quick-btn {
  white-space: nowrap;
  padding: 7px 14px;
  border-radius: 20px;
  border: 1.5px solid var(--tw-border);
  background: #FFF;
  color: var(--tw-primary);
  font-size: 12.5px;
  font-weight: 500;
  font-family: 'Kanit', sans-serif;
  cursor: pointer;
  transition: var(--tw-transition);
  display: flex;
  align-items: center;
  gap: 5px;
  flex-shrink: 0;
}

.tawan-quick-btn:hover {
  background: var(--tw-primary);
  color: #FFF;
  border-color: var(--tw-primary);
  transform: translateY(-1px);
  box-shadow: var(--tw-shadow-sm);
}

.tawan-quick-btn .tawan-q-icon {
  font-size: 14px;
}

/* ---------- Chat Messages Area ---------- */
.tawan-chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  scroll-behavior: smooth;
}

/* Custom scrollbar */
.tawan-chat-messages::-webkit-scrollbar {
  width: 5px;
}
.tawan-chat-messages::-webkit-scrollbar-track {
  background: transparent;
}
.tawan-chat-messages::-webkit-scrollbar-thumb {
  background: rgba(123, 45, 142, 0.2);
  border-radius: 10px;
}
.tawan-chat-messages::-webkit-scrollbar-thumb:hover {
  background: rgba(123, 45, 142, 0.4);
}

/* ---------- Message Bubble ---------- */
.tawan-message {
  display: flex;
  gap: 10px;
  max-width: 88%;
  animation: tawan-msg-in 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes tawan-msg-in {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.tawan-message.bot {
  align-self: flex-start;
}

.tawan-message.user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.tawan-msg-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  border: 1.5px solid var(--tw-border);
  background: #FFF;
}

.tawan-msg-avatar img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.tawan-message.user .tawan-msg-avatar {
  background: var(--tw-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFF;
  font-size: 16px;
  border-color: var(--tw-primary-light);
}

.tawan-msg-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.tawan-msg-bubble {
  padding: 12px 16px;
  border-radius: var(--tw-radius-sm);
  font-size: 14px;
  line-height: 1.6;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.tawan-message.bot .tawan-msg-bubble {
  background: var(--tw-bg-msg-bot);
  color: var(--tw-text-dark);
  border: 1px solid var(--tw-border);
  border-top-left-radius: 4px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.tawan-message.user .tawan-msg-bubble {
  background: var(--tw-bg-msg-user);
  color: var(--tw-text-light);
  border-top-right-radius: 4px;
}

.tawan-msg-time {
  font-size: 10.5px;
  color: var(--tw-text-muted);
  padding: 0 4px;
}

.tawan-message.user .tawan-msg-time {
  text-align: right;
}

/* ---------- Rich Content in Messages ---------- */
.tawan-msg-bubble a {
  color: var(--tw-primary);
  text-decoration: underline;
  font-weight: 500;
  transition: color 0.2s;
}

.tawan-msg-bubble a:hover {
  color: var(--tw-accent);
}

.tawan-message.user .tawan-msg-bubble a {
  color: var(--tw-gold-light);
}

/* Image in message */
.tawan-msg-image {
  width: 100%;
  max-width: 260px;
  border-radius: 12px;
  margin-top: 8px;
  border: 1px solid var(--tw-border);
  cursor: pointer;
  transition: transform 0.2s;
}

.tawan-msg-image:hover {
  transform: scale(1.02);
}

/* Link cards */
.tawan-link-card {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(123, 45, 142, 0.05);
  border: 1px solid var(--tw-border);
  border-radius: 12px;
  padding: 10px 14px;
  margin-top: 8px;
  text-decoration: none !important;
  transition: var(--tw-transition);
}

.tawan-link-card:hover {
  background: rgba(123, 45, 142, 0.1);
  transform: translateX(3px);
}

.tawan-link-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--tw-primary-light), var(--tw-primary));
  color: #FFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.tawan-link-info {
  flex: 1;
  min-width: 0;
}

.tawan-link-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--tw-text-dark);
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tawan-link-desc {
  font-size: 11px;
  color: var(--tw-text-muted);
  margin-top: 2px;
}

.tawan-link-arrow {
  font-size: 16px;
  color: var(--tw-text-muted);
  flex-shrink: 0;
}

/* Suggested follow-up buttons */
.tawan-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.tawan-suggest-btn {
  padding: 6px 12px;
  border-radius: 16px;
  border: 1.5px solid var(--tw-primary-light);
  background: rgba(163, 73, 164, 0.08);
  color: var(--tw-primary);
  font-size: 12px;
  font-weight: 500;
  font-family: 'Kanit', sans-serif;
  cursor: pointer;
  transition: var(--tw-transition);
}

.tawan-suggest-btn:hover {
  background: var(--tw-primary);
  color: #FFF;
  transform: translateY(-1px);
}

/* ---------- Typing Indicator ---------- */
.tawan-typing {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  max-width: 88%;
  animation: tawan-msg-in 0.3s ease;
}

.tawan-typing-dots {
  display: flex;
  gap: 4px;
  padding: 14px 18px;
  background: var(--tw-bg-msg-bot);
  border-radius: var(--tw-radius-sm);
  border-top-left-radius: 4px;
  border: 1px solid var(--tw-border);
}

.tawan-typing-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--tw-primary-light);
  animation: tawan-typing-anim 1.4s infinite;
}

.tawan-typing-dot:nth-child(2) { animation-delay: 0.2s; }
.tawan-typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes tawan-typing-anim {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30% { transform: translateY(-8px); opacity: 1; }
}

/* ---------- Chat Input ---------- */
.tawan-chat-input-area {
  padding: 12px 16px;
  background: #FFF;
  border-top: 1px solid var(--tw-border);
  display: flex;
  gap: 10px;
  align-items: flex-end;
  flex-shrink: 0;
}

.tawan-chat-input-wrap {
  flex: 1;
  position: relative;
}

#tawan-chat-input {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--tw-border);
  border-radius: 24px;
  font-size: 14px;
  font-family: 'Kanit', sans-serif;
  color: var(--tw-text-dark);
  background: var(--tw-bg-chat);
  outline: none;
  transition: border-color 0.2s;
  resize: none;
  min-height: 44px;
  max-height: 100px;
  line-height: 1.4;
  box-sizing: border-box;
}

#tawan-chat-input::placeholder {
  color: var(--tw-text-muted);
  font-weight: 300;
}

#tawan-chat-input:focus {
  border-color: var(--tw-primary-light);
  box-shadow: 0 0 0 3px rgba(163, 73, 164, 0.1);
}

#tawan-send-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, var(--tw-primary-light), var(--tw-primary));
  color: #FFF;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--tw-transition);
  flex-shrink: 0;
}

#tawan-send-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 4px 15px rgba(123, 45, 142, 0.4);
}

#tawan-send-btn:active {
  transform: scale(0.95);
}

#tawan-send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Send icon SVG */
.tawan-send-icon {
  width: 20px;
  height: 20px;
  fill: #FFF;
}

/* ---------- Welcome Message Greeting ---------- */
.tawan-welcome-area {
  text-align: center;
  padding: 20px 16px 8px;
}

.tawan-welcome-avatar {
  width: 80px;
  height: 80px;
  margin: 0 auto 12px;
  border-radius: 50%;
  border: 3px solid var(--tw-gold);
  overflow: hidden;
  background: #FFF;
  animation: tawan-avatar-float 3s ease-in-out infinite;
}

.tawan-welcome-avatar img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

@keyframes tawan-avatar-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.tawan-welcome-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--tw-primary);
  margin: 0 0 6px;
}

.tawan-welcome-text {
  font-size: 13px;
  color: var(--tw-text-muted);
  line-height: 1.5;
  margin: 0;
}

/* ---------- Powered By Footer ---------- */
.tawan-powered {
  text-align: center;
  padding: 6px 0 8px;
  font-size: 10px;
  color: var(--tw-text-muted);
  background: #FFF;
  flex-shrink: 0;
}

.tawan-powered a {
  color: var(--tw-primary-light);
  text-decoration: none;
  font-weight: 500;
}

/* ---------- Greeting Tooltip (on page load) ---------- */
.tawan-greeting-tooltip {
  position: fixed;
  bottom: 102px;
  right: 28px;
  z-index: 99997;
  background: #FFF;
  border: 1.5px solid var(--tw-border);
  border-radius: 16px 16px 4px 16px;
  padding: 12px 18px;
  box-shadow: var(--tw-shadow-sm);
  max-width: 260px;
  font-family: 'Kanit', sans-serif;
  font-size: 13.5px;
  color: var(--tw-text-dark);
  line-height: 1.5;
  opacity: 0;
  transform: translateY(10px) scale(0.9);
  transition: opacity 0.4s ease, transform 0.4s ease;
  pointer-events: none;
}

.tawan-greeting-tooltip.show {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: all;
}

.tawan-greeting-tooltip .tawan-tooltip-close {
  position: absolute;
  top: 4px;
  right: 8px;
  background: none;
  border: none;
  font-size: 16px;
  color: var(--tw-text-muted);
  cursor: pointer;
  padding: 2px;
  line-height: 1;
}

/* ---------- Image Lightbox ---------- */
.tawan-lightbox {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 100000;
  background: rgba(0,0,0,0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  cursor: pointer;
}

.tawan-lightbox.show {
  opacity: 1;
  pointer-events: all;
}

.tawan-lightbox img {
  max-width: 90%;
  max-height: 90%;
  border-radius: 12px;
  box-shadow: 0 0 40px rgba(0,0,0,0.5);
}

/* ---------- Responsive (Mobile) ---------- */
@media (max-width: 480px) {
  #tawan-chatbot-window {
    bottom: 0;
    right: 0;
    width: 100vw;
    height: 100vh;
    max-height: 100vh;
    max-width: 100vw;
    border-radius: 0;
  }

  #tawan-chatbot-btn {
    bottom: 16px;
    right: 16px;
    width: 62px;
    height: 62px;
  }

  #tawan-chatbot-btn img {
    width: 48px;
    height: 48px;
  }

  .tawan-greeting-tooltip {
    bottom: 86px;
    right: 16px;
    max-width: 220px;
  }
}

/* ---------- Dark mode support ---------- */
@media (prefers-color-scheme: dark) {
  :root {
    --tw-bg-chat: #1A0E20;
    --tw-bg-msg-bot: #2A1D32;
    --tw-text-dark: #E8D5F0;
    --tw-text-muted: #9B8CA3;
    --tw-border: #3D2C48;
  }

  .tawan-chat-input-area {
    background: #1A0E20;
  }

  #tawan-chat-input {
    background: #2A1D32;
    color: #E8D5F0;
  }

  .tawan-powered {
    background: #1A0E20;
  }

  .tawan-greeting-tooltip {
    background: #2A1D32;
    border-color: #3D2C48;
    color: #E8D5F0;
  }

  .tawan-link-card {
    background: rgba(163, 73, 164, 0.1);
    border-color: #3D2C48;
  }

  .tawan-link-title {
    color: #E8D5F0;
  }
}