/* ============================================================
   NEVA CHAT WIDGET — Nevanu AI Assistant
   Tokens from design-system.css — Dark Mode supported
   ============================================================ */

/* Floating Button */
.neva-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  border: none;
  cursor: pointer;
  z-index: var(--z-neva-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(var(--accent-rgb), 0.4);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.neva-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 28px rgba(var(--accent-rgb), 0.55);
}

.neva-btn svg {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: #fff;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.neva-btn__close {
  display: none;
}

.neva-btn--open .neva-btn__chat {
  display: none;
}

.neva-btn--open .neva-btn__close {
  display: block;
}

/* Mobile: above booking bar */
@media (max-width: 767px) {
  .neva-btn {
    bottom: 80px;
  }
}

/* Badge / notification dot */
.neva-btn__badge {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #22c55e;
  border: 2px solid var(--bg-primary);
  display: none;
}

.neva-btn__badge--visible {
  display: block;
  animation: neva-pulse 2s infinite;
}

@keyframes neva-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.2); }
}

/* ============================================================
   Chat Drawer
   ============================================================ */
.neva-drawer {
  position: fixed;
  bottom: 92px;
  right: 20px;
  width: 380px;
  max-width: calc(100vw - 40px);
  max-height: 600px;
  height: calc(100vh - 140px);
  background: var(--bg-primary);
  border-radius: 20px;
  box-shadow: var(--shadow-xl);
  z-index: var(--z-neva-drawer);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  transform: translateY(16px) scale(0.95);
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  font-family: var(--font-body);
}

.neva-drawer--open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

/* Mobile: fullscreen drawer */
@media (max-width: 767px) {
  .neva-drawer {
    bottom: 0;
    right: 0;
    width: 100vw;
    max-width: 100vw;
    height: 100dvh;
    max-height: 100dvh;
    border-radius: 0;
  }
}

/* ============================================================
   Header
   ============================================================ */
.neva-header {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  padding: 20px 24px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 12px;
}

.neva-header__avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.neva-header__avatar svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: #fff;
  stroke-width: 1.8;
}

.neva-header__info {
  flex: 1;
}

.neva-header__name {
  font-size: 1.0625rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.neva-header__status {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  display: inline-block;
}

.neva-header__subtitle {
  font-size: 0.8125rem;
  font-weight: 300;
  opacity: 0.85;
  margin-top: 2px;
}

.neva-header__close {
  width: 32px;
  height: 32px;
  border: none;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  color: #fff;
  font-size: 1.125rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
  flex-shrink: 0;
}

.neva-header__close:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* ============================================================
   Messages Area
   ============================================================ */
.neva-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  -webkit-overflow-scrolling: touch;
}

.neva-messages::-webkit-scrollbar {
  width: 4px;
}

.neva-messages::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 2px;
}

/* Message bubbles */
.neva-msg {
  max-width: 85%;
  padding: 12px 16px;
  border-radius: 16px;
  font-size: 0.9375rem;
  font-weight: 300;
  line-height: 1.55;
  word-wrap: break-word;
  animation: neva-fade-in 0.3s ease;
}

@keyframes neva-fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.neva-msg--bot {
  align-self: flex-start;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border-bottom-left-radius: 4px;
}

.neva-msg--user {
  align-self: flex-end;
  background: var(--accent);
  color: #fff;
  border-bottom-right-radius: 4px;
}

.neva-msg a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.neva-msg--bot a {
  color: var(--accent-dark);
}

/* Typing indicator */
.neva-typing {
  align-self: flex-start;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px 18px;
  background: var(--bg-tertiary);
  border-radius: 16px;
  border-bottom-left-radius: 4px;
}

.neva-typing__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text-muted);
  animation: neva-typing-bounce 1.4s infinite ease-in-out both;
}

.neva-typing__dot:nth-child(1) { animation-delay: 0s; }
.neva-typing__dot:nth-child(2) { animation-delay: 0.16s; }
.neva-typing__dot:nth-child(3) { animation-delay: 0.32s; }

@keyframes neva-typing-bounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40% { transform: scale(1); opacity: 1; }
}

/* ============================================================
   Quick Actions
   ============================================================ */
.neva-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 4px 0 8px;
  animation: neva-fade-in 0.3s ease;
}

.neva-action {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--accent);
  border-radius: 100px;
  background: transparent;
  color: var(--accent);
  font-family: inherit;
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  white-space: nowrap;
}

.neva-action:hover {
  background: var(--accent);
  color: #fff;
}

/* ============================================================
   Input Area
   ============================================================ */
.neva-input {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
  background: var(--bg-primary);
}

.neva-input__field {
  flex: 1;
  border: none;
  outline: none;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 300;
  color: var(--text-primary);
  padding: 8px 0;
  background: transparent;
}

.neva-input__field::placeholder {
  color: var(--text-muted);
}

.neva-input__send {
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.2s, transform 0.15s;
}

.neva-input__send:hover {
  background: var(--accent-dark);
  transform: scale(1.05);
}

.neva-input__send:disabled {
  opacity: 0.4;
  cursor: default;
  transform: none;
}

.neva-input__send svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ============================================================
   Proactive bubble (trigger popup)
   ============================================================ */
.neva-proactive {
  position: fixed;
  bottom: 92px;
  right: 20px;
  max-width: 280px;
  background: var(--bg-primary);
  border-radius: 16px 16px 4px 16px;
  padding: 14px 18px;
  box-shadow: var(--shadow-lg);
  z-index: var(--z-neva-proactive);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--text-primary);
  cursor: pointer;
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.neva-proactive--visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.neva-proactive__close {
  position: absolute;
  top: 4px;
  right: 8px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1rem;
  cursor: pointer;
  padding: 4px;
  line-height: 1;
}

@media (max-width: 767px) {
  .neva-proactive {
    bottom: 150px;
    right: 16px;
    max-width: calc(100vw - 100px);
  }
}

/* ============================================================
   DARK MODE
   ============================================================ */
[data-theme="dark"] .neva-btn {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  box-shadow: 0 4px 20px rgba(var(--accent-rgb), 0.5), var(--neon-border-glow);
}

[data-theme="dark"] .neva-btn:hover {
  box-shadow: var(--neon-glow);
}

[data-theme="dark"] .neva-btn__badge {
  border-color: var(--bg-primary);
}

[data-theme="dark"] .neva-drawer {
  background: rgba(10, 10, 10, 0.95);
  border: 1px solid rgba(var(--accent-rgb), 0.12);
  box-shadow: var(--neon-glow);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  background-image: var(--glass-shimmer);
}

[data-theme="dark"] .neva-header {
  background: linear-gradient(135deg, rgba(var(--accent-rgb), 0.2), rgba(var(--accent-rgb), 0.08));
  border-bottom: 1px solid rgba(var(--accent-rgb), 0.15);
}

[data-theme="dark"] .neva-header__avatar {
  background: rgba(var(--accent-rgb), 0.15);
}

[data-theme="dark"] .neva-header__avatar svg {
  stroke: var(--accent);
}

[data-theme="dark"] .neva-header__name {
  color: var(--text-primary);
}

[data-theme="dark"] .neva-header__subtitle {
  color: var(--text-secondary);
  opacity: 1;
}

[data-theme="dark"] .neva-header__close {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
}

[data-theme="dark"] .neva-header__close:hover {
  background: rgba(var(--accent-rgb), 0.15);
  color: var(--accent);
}

[data-theme="dark"] .neva-messages::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
}

[data-theme="dark"] .neva-msg--bot {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
}

[data-theme="dark"] .neva-msg--bot a {
  color: var(--accent);
  text-shadow: var(--neon-text-glow);
}

[data-theme="dark"] .neva-msg--user {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 12px rgba(var(--accent-rgb), 0.3);
}

[data-theme="dark"] .neva-typing {
  background: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .neva-typing__dot {
  background: rgba(var(--accent-rgb), 0.4);
}

[data-theme="dark"] .neva-action {
  border-color: rgba(var(--accent-rgb), 0.3);
  color: var(--accent);
  background: transparent;
}

[data-theme="dark"] .neva-action:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: var(--neon-border-glow);
}

[data-theme="dark"] .neva-input {
  background: rgba(10, 10, 10, 0.8);
  border-top-color: rgba(var(--accent-rgb), 0.1);
}

[data-theme="dark"] .neva-input__field {
  color: var(--text-primary);
}

[data-theme="dark"] .neva-input__field::placeholder {
  color: var(--text-muted);
}

[data-theme="dark"] .neva-input__send {
  box-shadow: 0 0 12px rgba(var(--accent-rgb), 0.3);
}

[data-theme="dark"] .neva-input__send:hover {
  box-shadow: var(--neon-border-glow);
}

[data-theme="dark"] .neva-proactive {
  background: rgba(10, 10, 10, 0.92);
  border: 1px solid rgba(var(--accent-rgb), 0.12);
  box-shadow: var(--neon-border-glow);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  color: var(--text-primary);
  background-image: var(--glass-shimmer);
}

[data-theme="dark"] .neva-proactive__close {
  color: var(--text-muted);
}

[data-theme="dark"] .neva-proactive__close:hover {
  color: var(--accent);
}