/**
 * Sovann AI Assistant - Frontend Chat Widget Stylesheet (Refined v1.1)
 * 
 * Design: Premium, Compact Medical Interface for Sovann Clinic (sovannclinic.com)
 * Compatibility: WordPress Astra & Elementor Themes
 * Enhancements: Compact 360x520px window, elegant uncrowded header, comfortable
 * quick-action buttons, perfected Khmer typography, precise input alignment.
 */

:root {
  --sovann-primary: #0b57d0;
  --sovann-primary-hover: #0842a0;
  --sovann-primary-soft: #eff6ff;
  --sovann-secondary: #0284c7;
  --sovann-bg-surface: #ffffff;
  --sovann-bg-chat: #f8fafc;
  --sovann-text-heading: #0f172a;
  --sovann-text-body: #1e293b;
  --sovann-text-muted: #64748b;
  --sovann-border: #e2e8f0;
  --sovann-border-focus: #3b82f6;
  --sovann-success: #16a34a;
  --sovann-emergency: #dc2626;
  --sovann-emergency-bg: #fef2f2;
  --sovann-emergency-border: #fecaca;
  --sovann-radius-window: 18px;
  --sovann-radius-bubble: 14px;
  --sovann-radius-chip: 10px;
  --sovann-shadow-widget: 0 12px 36px -4px rgba(11, 87, 208, 0.16), 0 4px 14px rgba(0, 0, 0, 0.06);
  --sovann-font-family: 'Kantumruy Pro', 'Battambang', 'Noto Sans Khmer', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --sovann-zindex: 999999;
}

/* ==========================================================================
   Root Container
   ========================================================================== */

#sovann-ai-root {
  position: fixed;
  bottom: 22px;
  right: 22px;
  z-index: var(--sovann-zindex);
  font-family: var(--sovann-font-family);
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--sovann-text-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#sovann-ai-root *,
#sovann-ai-root *::before,
#sovann-ai-root *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ==========================================================================
   Floating Launcher Trigger Button (Balanced 56px)
   ========================================================================== */

.sovann-ai-launcher {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--sovann-primary) 0%, var(--sovann-secondary) 100%);
  color: #ffffff;
  border: none;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(11, 87, 208, 0.35);
  transition: transform 0.22s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.22s ease;
  outline: none;
}

.sovann-ai-launcher:hover {
  transform: scale(1.06);
  box-shadow: 0 8px 24px rgba(11, 87, 208, 0.45);
}

.sovann-ai-launcher:focus-visible {
  outline: 3px solid #93c5fd;
  outline-offset: 3px;
}

.sovann-ai-launcher-icon,
.sovann-ai-launcher-close {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.2s ease, transform 0.22s ease;
}

.sovann-ai-launcher-icon svg,
.sovann-ai-launcher-close svg {
  width: 26px;
  height: 26px;
  fill: currentColor;
}

.sovann-ai-launcher-close {
  opacity: 0;
  transform: rotate(-90deg) scale(0.6);
}

#sovann-ai-root.is-open .sovann-ai-launcher-icon {
  opacity: 0;
  transform: rotate(90deg) scale(0.6);
}

#sovann-ai-root.is-open .sovann-ai-launcher-close {
  opacity: 1;
  transform: rotate(0) scale(1);
}

/* Status Dot Pulse */
.sovann-ai-status-pulse {
  position: absolute;
  top: 1px;
  right: 1px;
  width: 13px;
  height: 13px;
  background-color: var(--sovann-success);
  border: 2px solid #ffffff;
  border-radius: 50%;
}

.sovann-ai-status-pulse::after {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  border-radius: 50%;
  border: 2px solid var(--sovann-success);
  opacity: 0.75;
  animation: sovann-pulse 2.2s infinite;
}

@keyframes sovann-pulse {
  0% { transform: scale(1); opacity: 0.8; }
  60% { transform: scale(2.1); opacity: 0; }
  100% { transform: scale(2.1); opacity: 0; }
}

/* Launcher Tooltip */
.sovann-ai-launcher-tooltip {
  position: absolute;
  right: 68px;
  background: #ffffff;
  color: var(--sovann-text-heading);
  padding: 6px 12px;
  border-radius: 18px;
  font-size: 12.5px;
  font-weight: 500;
  white-space: nowrap;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--sovann-border);
  opacity: 0;
  transform: translateX(8px);
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.sovann-ai-launcher-tooltip::after {
  content: '';
  position: absolute;
  top: 50%;
  right: -5px;
  transform: translateY(-50%) rotate(45deg);
  width: 9px;
  height: 9px;
  background: #ffffff;
  border-top: 1px solid var(--sovann-border);
  border-right: 1px solid var(--sovann-border);
}

.sovann-ai-launcher:hover .sovann-ai-launcher-tooltip {
  opacity: 1;
  transform: translateX(0);
}

#sovann-ai-root.is-open .sovann-ai-launcher-tooltip {
  display: none;
}

/* ==========================================================================
   Chat Dialog Window (Compact: 360px x 520px)
   ========================================================================== */

.sovann-ai-window {
  position: absolute;
  bottom: 70px;
  right: 0;
  width: 360px;
  height: 520px;
  max-height: calc(100vh - 100px);
  background: var(--sovann-bg-surface);
  border-radius: var(--sovann-radius-window);
  box-shadow: var(--sovann-shadow-widget);
  border: 1px solid rgba(226, 232, 240, 0.85);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px) scale(0.97);
  transform-origin: bottom right;
  transition: opacity 0.24s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.24s cubic-bezier(0.16, 1, 0.3, 1),
              visibility 0.24s;
}

#sovann-ai-root.is-open .sovann-ai-window {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

/* ==========================================================================
   Refined Header (Uncrowded, Crisp 58px)
   ========================================================================== */

.sovann-ai-header {
  background: linear-gradient(135deg, #0b57d0 0%, #0284c7 100%);
  color: #ffffff;
  padding: 11px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  flex-shrink: 0;
  gap: 10px;
}

.sovann-ai-header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  flex: 1 1 auto;
}

.sovann-ai-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: #ffffff;
  color: var(--sovann-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
  flex-shrink: 0;
}

.sovann-ai-avatar svg {
  width: 20px;
  height: 20px;
}

.sovann-ai-brand-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.sovann-ai-title {
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.25;
  color: #ffffff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sovann-ai-subtitle {
  font-size: 11.5px;
  color: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  gap: 5px;
  margin-top: 1px;
}

.sovann-ai-status-dot {
  width: 6.5px;
  height: 6.5px;
  background-color: #4ade80;
  border-radius: 50%;
  display: inline-block;
}

.sovann-ai-header-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

/* Language Switcher Pill */
.sovann-ai-lang-btn {
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #ffffff;
  padding: 3px 9px;
  border-radius: 14px;
  font-size: 11.5px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 3px;
  transition: all 0.18s ease;
  outline: none;
  font-family: inherit;
}

.sovann-ai-lang-btn:hover {
  background: rgba(255, 255, 255, 0.28);
}

.sovann-ai-lang-btn:focus-visible {
  outline: 2px solid #ffffff;
}

/* Header Close Button */
.sovann-ai-close-btn {
  background: transparent;
  border: none;
  color: rgba(255, 255, 255, 0.9);
  cursor: pointer;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.18s, color 0.18s;
  outline: none;
}

.sovann-ai-close-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff;
}

.sovann-ai-close-btn:focus-visible {
  outline: 2px solid #ffffff;
}

/* ==========================================================================
   Emergency Strip (Clear, Compact)
   ========================================================================== */

.sovann-ai-emergency-bar {
  background: var(--sovann-emergency-bg);
  border-bottom: 1px solid var(--sovann-emergency-border);
  color: var(--sovann-emergency);
  padding: 5px 12px;
  font-size: 11.5px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  flex-shrink: 0;
}

.sovann-ai-emergency-bar a {
  background: var(--sovann-emergency);
  color: #ffffff;
  padding: 2px 7px;
  border-radius: 4px;
  text-decoration: none;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.sovann-ai-emergency-bar a:hover {
  background: #b91c1c;
}

/* ==========================================================================
   Chat Messages Body
   ========================================================================== */

.sovann-ai-messages {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 14px;
  background-color: var(--sovann-bg-chat);
  display: flex;
  flex-direction: column;
  gap: 12px;
  scroll-behavior: smooth;
}

/* Smooth Scrollbar */
.sovann-ai-messages::-webkit-scrollbar {
  width: 4px;
}
.sovann-ai-messages::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 8px;
}
.sovann-ai-messages::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* Bubbles */
.sovann-ai-bubble-row {
  display: flex;
  gap: 8px;
  max-width: 90%;
  animation: sovann-slide-up 0.18s ease-out;
}

@keyframes sovann-slide-up {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.sovann-ai-bubble-row.is-assistant {
  align-self: flex-start;
}

.sovann-ai-bubble-row.is-user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.sovann-ai-bubble-avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--sovann-primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.sovann-ai-bubble-avatar svg {
  width: 14px;
  height: 14px;
}

.sovann-ai-bubble-content {
  display: flex;
  flex-direction: column;
}

.sovann-ai-bubble {
  padding: 9px 13px;
  font-size: 13.5px;
  line-height: 1.62;
  word-break: break-word;
}

.is-assistant .sovann-ai-bubble {
  background: #ffffff;
  color: var(--sovann-text-body);
  border: 1px solid var(--sovann-border);
  border-radius: 14px 14px 14px 4px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

.is-assistant .sovann-ai-bubble p {
  margin-bottom: 6px;
}

.is-assistant .sovann-ai-bubble p:last-child {
  margin-bottom: 0;
}

.is-assistant .sovann-ai-bubble strong {
  color: var(--sovann-primary);
  font-weight: 600;
}

.is-assistant .sovann-ai-bubble ul,
.is-assistant .sovann-ai-bubble ol {
  margin-left: 16px;
  margin-top: 4px;
  margin-bottom: 6px;
}

.is-assistant .sovann-ai-bubble li {
  margin-bottom: 3px;
}

.is-user .sovann-ai-bubble {
  background: linear-gradient(135deg, var(--sovann-primary) 0%, #1d4ed8 100%);
  color: #ffffff;
  border-radius: 14px 14px 4px 14px;
  box-shadow: 0 2px 6px rgba(11, 87, 208, 0.18);
}

.sovann-ai-bubble-time {
  font-size: 10px;
  color: var(--sovann-text-muted);
  margin-top: 3px;
  padding: 0 3px;
}

.is-user .sovann-ai-bubble-time {
  text-align: right;
}

/* ==========================================================================
   Generous, Clean Quick-Action Buttons (2x2 Grid, Easy to Tap)
   ========================================================================== */

.sovann-ai-quick-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 7px;
  margin-top: 8px;
  width: 100%;
}

.sovann-ai-chip {
  background: #ffffff;
  border: 1px solid #bfdbfe;
  color: var(--sovann-primary);
  font-size: 12.5px;
  font-weight: 500;
  padding: 8px 10px;
  border-radius: var(--sovann-radius-chip);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 6px;
  transition: all 0.16s ease;
  font-family: inherit;
  text-align: left;
  line-height: 1.35;
  box-shadow: 0 1px 2px rgba(11, 87, 208, 0.04);
}

.sovann-ai-chip:hover {
  background: var(--sovann-primary-soft);
  border-color: var(--sovann-primary);
  transform: translateY(-1px);
  box-shadow: 0 3px 6px rgba(11, 87, 208, 0.08);
}

.sovann-ai-chip:focus-visible {
  outline: 2px solid var(--sovann-primary);
  outline-offset: 1px;
}

/* ==========================================================================
   Typing Indicator
   ========================================================================== */

.sovann-ai-typing {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 10px 14px;
  background: #ffffff;
  border: 1px solid var(--sovann-border);
  border-radius: 14px 14px 14px 4px;
  width: fit-content;
}

.sovann-ai-typing-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #94a3b8;
  animation: sovann-bounce 1.4s infinite ease-in-out both;
}

.sovann-ai-typing-dot:nth-child(1) { animation-delay: -0.32s; }
.sovann-ai-typing-dot:nth-child(2) { animation-delay: -0.16s; }
.sovann-ai-typing-dot:nth-child(3) { animation-delay: 0s; }

@keyframes sovann-bounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.5; }
  40% { transform: scale(1.15); opacity: 1; background: var(--sovann-primary); }
}

/* Error Notice */
.sovann-ai-error-notice {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 12px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.sovann-ai-error-notice button {
  background: #ef4444;
  color: #ffffff;
  border: none;
  padding: 3px 8px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 11px;
  align-self: flex-start;
}

/* ==========================================================================
   Message Input Bar & Medical Disclaimer (Perfect Alignment)
   ========================================================================== */

.sovann-ai-footer {
  background: #ffffff;
  border-top: 1px solid var(--sovann-border);
  padding: 10px 12px 8px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex-shrink: 0;
}

.sovann-ai-input-form {
  display: flex;
  align-items: center;
  gap: 7px;
  width: 100%;
}

.sovann-ai-input {
  flex: 1 1 auto;
  height: 40px;
  border: 1px solid var(--sovann-border);
  border-radius: 20px;
  padding: 0 14px;
  font-size: 13.5px;
  color: var(--sovann-text-heading);
  background: #f8fafc;
  outline: none;
  font-family: inherit;
  line-height: normal;
  transition: border-color 0.18s, background-color 0.18s, box-shadow 0.18s;
}

.sovann-ai-input:focus {
  border-color: var(--sovann-border-focus);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

.sovann-ai-input::placeholder {
  color: #94a3b8;
  font-size: 13px;
}

.sovann-ai-send-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--sovann-primary);
  color: #ffffff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.18s, transform 0.15s;
  flex-shrink: 0;
  outline: none;
}

.sovann-ai-send-btn:hover:not(:disabled) {
  background: var(--sovann-primary-hover);
  transform: scale(1.05);
}

.sovann-ai-send-btn:disabled {
  background: #cbd5e1;
  cursor: not-allowed;
  opacity: 0.6;
}

.sovann-ai-send-btn svg {
  width: 17px;
  height: 17px;
  fill: currentColor;
  margin-left: 2px;
}

/* Disclaimer text */
.sovann-ai-disclaimer {
  font-size: 10.5px;
  line-height: 1.4;
  color: var(--sovann-text-muted);
  text-align: center;
  padding: 0 2px;
}

/* ==========================================================================
   Mobile Responsive Adjustments
   ========================================================================== */

@media (max-width: 480px) {
  #sovann-ai-root {
    bottom: 14px;
    right: 14px;
  }

  .sovann-ai-window {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    height: 100vh;
    max-height: 100vh;
    border-radius: 0;
    border: none;
    z-index: calc(var(--sovann-zindex) + 1);
    transform: translateY(100%);
  }

  #sovann-ai-root.is-open .sovann-ai-window {
    transform: translateY(0);
  }

  .sovann-ai-header {
    padding-top: max(12px, env(safe-area-inset-top));
  }

  .sovann-ai-footer {
    padding-bottom: max(10px, env(safe-area-inset-bottom));
  }
}

/* ==========================================================================
   Reduced Motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  .sovann-ai-launcher,
  .sovann-ai-window,
  .sovann-ai-status-pulse::after,
  .sovann-ai-typing-dot {
    animation: none !important;
    transition: none !important;
  }
}