/* ==========================================================================
   NITIN SYSTEMS - ON-SITE AI CONSULTATIVE AGENT (V7.0 - EXECUTIVE EDITION)
   Executive Contrast Theme (Deep Navy Header, Crisp Light Canvas)
   Isolated Hardware-Accelerated 2-Finger Trackpad & Wheel Scroll Engine
   ========================================================================== */

/* 1. FLOATING LAUNCHER TRIGGER */
#ns-agent-trigger {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 99999;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  background: #0B132B;
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 9999px;
  box-shadow: 0 10px 25px -5px rgba(11, 19, 43, 0.4), 0 0 15px -3px rgba(37, 99, 235, 0.35);
  cursor: pointer;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.01em;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  user-select: none;
}

#ns-agent-trigger:hover {
  transform: translateY(-2px) scale(1.02);
  background: #0F172A;
  border-color: #3B82F6;
  box-shadow: 0 14px 30px -5px rgba(11, 19, 43, 0.5), 0 0 22px 0 rgba(37, 99, 235, 0.5);
}

#ns-agent-trigger:active {
  transform: translateY(0) scale(0.98);
}

.ns-trigger-dot {
  width: 8px;
  height: 8px;
  background: #10B981;
  border-radius: 50%;
  box-shadow: 0 0 8px #10B981;
  animation: ns-pulse-green 2s infinite ease-in-out;
}

.ns-trigger-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #3B82F6;
}

/* 2. CHAT MODAL WINDOW (EXECUTIVE CONTRAST & SCROLL ISOLATION) */
#ns-agent-modal {
  position: fixed;
  bottom: 84px;
  right: 24px;
  z-index: 99999;
  width: 410px;
  max-width: calc(100vw - 32px);
  height: 620px;
  max-height: calc(100vh - 110px);
  background: #FFFFFF;
  border: 1px solid rgba(15, 23, 42, 0.12);
  border-radius: 16px;
  box-shadow: 0 25px 60px -15px rgba(15, 23, 42, 0.22), 0 0 0 1px rgba(15, 23, 42, 0.05);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  transition: opacity 0.25s ease, transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  transform-origin: bottom right;
  overscroll-behavior: contain;
}

#ns-agent-modal.ns-agent-hidden {
  opacity: 0;
  pointer-events: none;
  transform: translateY(16px) scale(0.96);
}

#ns-agent-modal:not(.ns-agent-hidden) {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

/* 3. MODAL HEADER (DEEP EXECUTIVE NAVY) */
.ns-agent-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  background: #0B132B;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
}

.ns-header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.ns-header-avatar {
  width: 34px;
  height: 34px;
  background: #1E293B;
  border: 1px solid #334155;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
}

.ns-header-avatar img {
  width: 22px;
  height: 22px;
  object-fit: contain;
}

.ns-header-titles {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.ns-header-name {
  font-family: 'Lora', Georgia, serif;
  font-size: 14px;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: -0.01em;
}

.ns-header-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: #94A3B8;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.ns-status-dot {
  width: 6px;
  height: 6px;
  background: #10B981;
  border-radius: 50%;
  box-shadow: 0 0 6px #10B981;
}

.ns-header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.ns-header-btn {
  background: transparent;
  border: none;
  color: #94A3B8;
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.ns-header-btn:hover {
  background: #1E293B;
  color: #FFFFFF;
}

/* 4. CONVERSATION BODY (CRISP LIGHT SLATE CANVAS & SCROLL TRAP) */
.ns-agent-messages {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
  touch-action: pan-y;
  -webkit-overflow-scrolling: touch;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: #F8FAFC;
}

.ns-agent-messages::-webkit-scrollbar {
  width: 6px;
}

.ns-agent-messages::-webkit-scrollbar-track {
  background: #F8FAFC;
}

.ns-agent-messages::-webkit-scrollbar-thumb {
  background: #CBD5E1;
  border-radius: 4px;
}

.ns-agent-messages::-webkit-scrollbar-thumb:hover {
  background: #94A3B8;
}

/* 5. MESSAGE BUBBLES */
.ns-message-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-width: 88%;
  animation: ns-fade-slide 0.25s ease-out;
}

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

.ns-message-user {
  align-self: flex-end;
}

.ns-bubble {
  padding: 11px 14px;
  font-size: 13px;
  line-height: 1.55;
  word-wrap: break-word;
}

.ns-bubble-bot {
  background: #FFFFFF;
  color: #0F172A;
  border: 1px solid #E2E8F0;
  border-radius: 14px 14px 14px 3px;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.05);
}

.ns-bubble-user {
  background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 14px 14px 3px 14px;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.25);
}

.ns-message-timestamp {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9.5px;
  color: #94A3B8;
  padding: 0 4px;
}

.ns-message-user .ns-message-timestamp {
  align-self: flex-end;
}

/* 6. TYPING INDICATOR */
.ns-typing-indicator {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 10px 14px;
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 14px 14px 14px 3px;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.05);
  width: fit-content;
}

.ns-typing-dot {
  width: 6px;
  height: 6px;
  background: #2563EB;
  border-radius: 50%;
  animation: ns-bounce 1.4s infinite ease-in-out both;
}

.ns-typing-dot:nth-child(1) { animation-delay: -0.32s; }
.ns-typing-dot:nth-child(2) { animation-delay: -0.16s; }

/* 7. INPUT COMPOSER */
.ns-agent-footer {
  padding: 12px 14px;
  background: #FFFFFF;
  border-top: 1px solid #E2E8F0;
  flex-shrink: 0;
}

.ns-composer-form {
  display: flex;
  align-items: flex-end;
  gap: 8px;
}

.ns-composer-input {
  flex: 1;
  background: #F8FAFC;
  border: 1px solid #CBD5E1;
  border-radius: 8px;
  padding: 9px 12px;
  font-size: 13px;
  color: #0F172A;
  font-family: inherit;
  outline: none;
  transition: all 0.15s ease;
}

.ns-composer-textarea {
  min-height: 38px;
  max-height: 110px;
  resize: none;
  overflow-y: auto;
  line-height: 1.45;
}

.ns-composer-textarea::-webkit-scrollbar {
  width: 4px;
}

.ns-composer-textarea::-webkit-scrollbar-track {
  background: transparent;
}

.ns-composer-textarea::-webkit-scrollbar-thumb {
  background: #CBD5E1;
  border-radius: 4px;
}

.ns-composer-input::placeholder,
.ns-composer-textarea::placeholder {
  color: #94A3B8;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ns-composer-input:focus {
  background: #FFFFFF;
  border-color: #2563EB;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.ns-composer-send-btn {
  width: 38px;
  height: 38px;
  background: #2563EB;
  border: none;
  border-radius: 8px;
  color: #FFFFFF;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.15s ease;
}

.ns-composer-send-btn:hover {
  background: #1D4ED8;
  transform: translateY(-1px);
}

.ns-composer-send-btn:disabled {
  background: #E2E8F0;
  color: #94A3B8;
  cursor: not-allowed;
  transform: none;
}

.ns-composer-caption {
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  text-align: center;
}

.ns-tech-label {
  font-size: 10px;
  font-weight: 600;
  color: #475569;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: -0.01em;
}

.ns-security-subtext {
  font-size: 9.5px;
  color: #94A3B8;
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* 8. FAST-TRACK BUTTON */
.ns-fasttrack-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 10px;
  width: 100%;
  padding: 9px 12px;
  background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  color: #FFFFFF !important;
  font-size: 11.5px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.15s ease;
  box-sizing: border-box;
}

.ns-fasttrack-btn:hover {
  background: #1D4ED8;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

/* 9. PROACTIVE INVITATION SPEECH BUBBLE */
#ns-agent-prompt-bubble {
  position: fixed;
  bottom: 80px;
  right: 24px;
  z-index: 99998;
  max-width: 290px;
  padding: 12px 14px;
  background: #0B132B;
  border: 1px solid #2563EB;
  border-radius: 12px 12px 2px 12px;
  box-shadow: 0 12px 35px -5px rgba(11, 19, 43, 0.4), 0 0 15px -3px rgba(37, 99, 235, 0.3);
  color: #F8FAFC;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 12px;
  line-height: 1.45;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  animation: ns-fade-slide 0.3s ease-out;
}

#ns-agent-prompt-bubble:hover {
  transform: translateY(-2px);
  border-color: #3B82F6;
  box-shadow: 0 16px 40px -5px rgba(11, 19, 43, 0.5), 0 0 20px 0 rgba(37, 99, 235, 0.4);
}

.ns-prompt-bubble-close {
  position: absolute;
  top: 5px;
  right: 7px;
  background: transparent;
  border: none;
  color: #94A3B8;
  font-size: 14px;
  cursor: pointer;
  padding: 2px 4px;
  line-height: 1;
}

.ns-prompt-bubble-close:hover {
  color: #FFFFFF;
}

.ns-prompt-bubble-action {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 6px;
  color: #3B82F6;
  font-size: 11px;
  font-weight: 600;
}

/* 10. KEYFRAME ANIMATIONS */
@keyframes ns-pulse-green {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(1.15); }
}

@keyframes ns-fade-slide {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes ns-bounce {
  0%, 80%, 100% { transform: scale(0); }
  40% { transform: scale(1); }
}

/* 11. RESPONSIVE MOBILE BREAKPOINTS */
@media (max-width: 640px) {
  #ns-agent-trigger {
    bottom: 16px;
    right: 16px;
    padding: 9px 14px;
    font-size: 12px;
  }
  
  #ns-agent-modal {
    bottom: 0;
    right: 0;
    left: 0;
    width: 100vw;
    max-width: 100vw;
    height: 92vh;
    max-height: 92vh;
    border-radius: 18px 18px 0 0;
    border-bottom: none;
    border-left: none;
    border-right: none;
  }

  #ns-agent-prompt-bubble {
    bottom: 70px;
    right: 16px;
    max-width: calc(100vw - 32px);
  }
}

/* 12. METHOD B: IN-CHAT INTERACTIVE INTAKE CARD (HYBRID GOLD STANDARD) */
.ns-intake-card {
  margin: 12px 0 6px 0;
  padding: 14px 16px;
  background: #F8FAFC;
  border: 1px solid #CBD5E1;
  border-left: 4px solid #2563EB;
  border-radius: 12px;
  box-shadow: 0 4px 15px -3px rgba(15, 23, 42, 0.08);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  animation: ns-fade-slide 0.3s ease-out;
}

.ns-intake-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid #E2E8F0;
}

.ns-intake-card-title {
  font-size: 12px;
  font-weight: 700;
  color: #0F172A;
  letter-spacing: -0.01em;
}

.ns-intake-card-badge {
  font-size: 10px;
  font-weight: 600;
  color: #1E40AF;
  background: #DBEAFE;
  padding: 2px 7px;
  border-radius: 9999px;
  white-space: nowrap;
}

.ns-intake-fields {
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin-bottom: 12px;
}

.ns-intake-row {
  display: flex;
  gap: 8px;
}

.ns-intake-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.ns-intake-group label {
  font-size: 10.5px;
  font-weight: 600;
  color: #475569;
}

.ns-intake-input {
  width: 100%;
  padding: 7px 10px;
  background: #FFFFFF;
  border: 1px solid #CBD5E1;
  border-radius: 6px;
  font-size: 12px;
  color: #0F172A;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  box-sizing: border-box;
}

.ns-intake-input:focus {
  border-color: #2563EB;
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.15);
}

.ns-intake-input::placeholder {
  color: #94A3B8;
  font-size: 11.5px;
}

.ns-intake-submit-btn {
  width: 100%;
  padding: 10px 14px;
  background: #2563EB;
  color: #FFFFFF;
  border: none;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
}

.ns-intake-submit-btn:hover {
  background: #1D4ED8;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
  transform: translateY(-1px);
}

.ns-intake-submit-btn:active {
  transform: translateY(0);
}

.ns-intake-submit-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

@media (max-width: 640px) {
  .ns-intake-row {
    flex-direction: column;
  }
}