/* ═══════════════════════════════════════════════════════════════════════════
   Fona AI — Floating Chat Widget Styles
   Fonabit.AI Platform | Plus Jakarta Sans | Teal #00897B | Dark #0A1628
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─── Design Tokens ──────────────────────────────────────────────────────── */

:root {
  --fona-primary:        #00897B;
  --fona-primary-dark:   #00695C;
  --fona-primary-light:  #4DB6AC;
  --fona-primary-glow:   rgba(0, 137, 123, 0.35);
  --fona-bg:             #0A1628;
  --fona-bg-lighter:     #111E33;
  --fona-bg-card:        #162038;
  --fona-bg-input:       #1C2A42;
  --fona-border:         rgba(255, 255, 255, 0.08);
  --fona-border-active:  rgba(0, 137, 123, 0.5);
  --fona-text:           #F0F4F8;
  --fona-text-muted:     rgba(240, 244, 248, 0.55);
  --fona-text-dim:       rgba(240, 244, 248, 0.35);
  --fona-white:          #FFFFFF;
  --fona-red:            #EF4444;
  --fona-shadow-sm:      0 2px 8px rgba(0, 0, 0, 0.3);
  --fona-shadow-md:      0 8px 24px rgba(0, 0, 0, 0.45);
  --fona-shadow-lg:      0 16px 48px rgba(0, 0, 0, 0.6);
  --fona-shadow-fab:     0 4px 20px rgba(0, 137, 123, 0.45), 0 2px 8px rgba(0, 0, 0, 0.35);
  --fona-radius-sm:      8px;
  --fona-radius-md:      12px;
  --fona-radius-lg:      16px;
  --fona-radius-xl:      20px;
  --fona-radius-full:    9999px;
  --fona-font:           'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --fona-transition:     0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --fona-transition-spring: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  --fona-z-fab:          9999;
  --fona-z-panel:        9998;
}

/* ─── FAB (Floating Action Button) ──────────────────────────────────────── */

.fona-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: var(--fona-z-fab);
  width: 56px;
  height: 56px;
  border-radius: var(--fona-radius-full);
  background: linear-gradient(135deg, var(--fona-primary) 0%, var(--fona-primary-dark) 100%);
  box-shadow: var(--fona-shadow-fab);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  outline: none;
  transition:
    transform var(--fona-transition-spring),
    box-shadow var(--fona-transition),
    background var(--fona-transition);
  animation: fona-fab-idle 3s ease-in-out infinite;
  font-family: var(--fona-font);
}

.fona-fab:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 28px rgba(0, 137, 123, 0.6), 0 4px 12px rgba(0, 0, 0, 0.4);
  animation: none;
}

.fona-fab:active {
  transform: scale(0.96);
}

.fona-fab--open {
  animation: none;
  background: linear-gradient(135deg, var(--fona-primary-dark) 0%, #004D40 100%);
}

.fona-fab--open .fona-fab-icon {
  transform: rotate(45deg) scale(0.85);
}

.fona-fab-icon {
  font-size: 22px;
  color: var(--fona-white);
  line-height: 1;
  display: block;
  transition: transform var(--fona-transition-spring);
  user-select: none;
  pointer-events: none;
  font-style: normal;
}

/* Unread badge */
.fona-fab-badge {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 10px;
  height: 10px;
  border-radius: var(--fona-radius-full);
  background: var(--fona-red);
  border: 2px solid var(--fona-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fona-badge-pop 0.3s var(--fona-transition-spring);
}

/* Tooltip */
.fona-fab-tooltip {
  position: absolute;
  right: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%) translateX(4px);
  background: var(--fona-bg);
  color: var(--fona-text);
  font-family: var(--fona-font);
  font-size: 12px;
  font-weight: 500;
  padding: 5px 10px;
  border-radius: var(--fona-radius-sm);
  border: 1px solid var(--fona-border);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--fona-transition), transform var(--fona-transition);
  box-shadow: var(--fona-shadow-sm);
}

.fona-fab:hover .fona-fab-tooltip {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

/* Idle pulse animation */
@keyframes fona-fab-idle {
  0%, 100% { box-shadow: var(--fona-shadow-fab); }
  50%       { box-shadow: 0 4px 28px rgba(0, 137, 123, 0.65), 0 2px 8px rgba(0, 0, 0, 0.35); }
}

@keyframes fona-badge-pop {
  0%   { transform: scale(0); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

/* ─── Chat Panel ─────────────────────────────────────────────────────────── */

.fona-panel {
  position: fixed;
  bottom: 90px;
  right: 24px;
  z-index: var(--fona-z-panel);
  width: 360px;
  max-height: 520px;
  border-radius: var(--fona-radius-lg);
  background: var(--fona-bg);
  border: 1px solid var(--fona-border);
  box-shadow: var(--fona-shadow-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  font-family: var(--fona-font);
  /* Hidden state */
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.97);
  pointer-events: none;
  transition:
    opacity 0.25s ease,
    visibility 0.25s ease,
    transform var(--fona-transition-spring);
  transform-origin: bottom right;
}

.fona-panel--open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
  pointer-events: all;
}

/* ─── Panel Header ───────────────────────────────────────────────────────── */

.fona-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--fona-border);
  background: var(--fona-bg-lighter);
  flex-shrink: 0;
  gap: 8px;
}

.fona-header-left {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.fona-avatar-dot {
  width: 32px;
  height: 32px;
  border-radius: var(--fona-radius-full);
  background: linear-gradient(135deg, var(--fona-primary) 0%, var(--fona-primary-dark) 100%);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--fona-white);
  box-shadow: 0 0 0 2px rgba(0, 137, 123, 0.3);
  position: relative;
}

.fona-avatar-dot::after {
  content: '✦';
  font-size: 13px;
  line-height: 1;
}

.fona-header-info {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}

.fona-header-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--fona-text);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.fona-context-badge {
  font-size: 10px;
  font-weight: 600;
  color: var(--fona-primary-light);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  line-height: 1;
}

.fona-header-actions {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
}

.fona-header-btn {
  width: 28px;
  height: 28px;
  border-radius: var(--fona-radius-sm);
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--fona-text-muted);
  transition: background var(--fona-transition), color var(--fona-transition);
  outline: none;
}

.fona-header-btn:hover {
  background: rgba(255, 255, 255, 0.07);
  color: var(--fona-text);
}

.fona-header-btn.active {
  color: var(--fona-primary-light);
  background: rgba(0, 137, 123, 0.12);
}

.fona-close-btn:hover {
  background: rgba(239, 68, 68, 0.12);
  color: var(--fona-red);
}

/* ─── Messages Area ──────────────────────────────────────────────────────── */

.fona-panel-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px 14px 8px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  scroll-behavior: smooth;
  min-height: 0;
}

/* Custom scrollbar */
.fona-panel-messages::-webkit-scrollbar {
  width: 4px;
}

.fona-panel-messages::-webkit-scrollbar-track {
  background: transparent;
}

.fona-panel-messages::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border-radius: var(--fona-radius-full);
}

.fona-panel-messages::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ─── Message Bubbles ────────────────────────────────────────────────────── */

.fona-msg {
  display: flex;
  flex-direction: column;
  max-width: 100%;
  animation: fona-msg-in 0.22s ease;
}

@keyframes fona-msg-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fona-msg-user {
  align-items: flex-end;
}

.fona-msg-assistant {
  align-items: flex-start;
}

.fona-msg-inner {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  max-width: 100%;
}

.fona-assistant-dot {
  width: 22px;
  height: 22px;
  border-radius: var(--fona-radius-full);
  background: linear-gradient(135deg, var(--fona-primary) 0%, var(--fona-primary-dark) 100%);
  flex-shrink: 0;
  margin-top: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  color: var(--fona-white);
  box-shadow: 0 0 0 1.5px rgba(0, 137, 123, 0.25);
}

.fona-assistant-dot::after {
  content: '✦';
  line-height: 1;
}

.fona-bubble {
  padding: 10px 14px;
  border-radius: var(--fona-radius-md);
  font-size: 13px;
  line-height: 1.55;
  max-width: 260px;
  word-break: break-word;
}

.fona-bubble-user {
  background: linear-gradient(135deg, var(--fona-primary) 0%, var(--fona-primary-dark) 100%);
  color: var(--fona-white);
  border-bottom-right-radius: 4px;
  box-shadow: 0 2px 8px rgba(0, 137, 123, 0.25);
}

.fona-bubble-assistant {
  background: var(--fona-bg-card);
  color: var(--fona-text);
  border-bottom-left-radius: 4px;
  border: 1px solid var(--fona-border);
  max-width: 280px;
}

/* Code within assistant bubbles */
.fona-bubble-assistant code {
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;
  font-size: 11.5px;
  background: rgba(0, 0, 0, 0.35);
  padding: 1px 5px;
  border-radius: 4px;
  color: var(--fona-primary-light);
}

.fona-bubble-assistant pre {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--fona-radius-sm);
  padding: 10px 12px;
  margin: 8px 0 4px;
  overflow-x: auto;
  font-size: 11px;
  line-height: 1.5;
}

.fona-bubble-assistant pre code {
  background: transparent;
  padding: 0;
  color: #8BE0D9;
}

.fona-bubble-assistant strong {
  color: var(--fona-white);
  font-weight: 600;
}

.fona-msg-time {
  font-size: 10px;
  color: var(--fona-text-dim);
  margin-top: 3px;
  padding: 0 2px;
}

/* System message */
.fona-msg-system {
  text-align: center;
  font-size: 11px;
  color: var(--fona-text-muted);
  padding: 4px 12px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--fona-radius-full);
  align-self: center;
  max-width: 90%;
  animation: fona-msg-in 0.22s ease;
}

/* ─── Typing Indicator ───────────────────────────────────────────────────── */

.fona-typing {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px 14px;
  background: var(--fona-bg-card);
  border: 1px solid var(--fona-border);
  border-radius: var(--fona-radius-md);
  border-bottom-left-radius: 4px;
}

.fona-typing span {
  display: block;
  width: 6px;
  height: 6px;
  border-radius: var(--fona-radius-full);
  background: var(--fona-primary);
  animation: fona-typing-bounce 1.2s ease-in-out infinite;
}

.fona-typing span:nth-child(2) {
  animation-delay: 0.2s;
}

.fona-typing span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes fona-typing-bounce {
  0%, 80%, 100% {
    transform: translateY(0);
    opacity: 0.4;
  }
  40% {
    transform: translateY(-5px);
    opacity: 1;
  }
}

/* ─── Suggestion Chips ───────────────────────────────────────────────────── */

.fona-suggestions-wrapper {
  flex-shrink: 0;
  padding: 0 14px;
}

.fona-suggestions {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 8px 0;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.fona-suggestions::-webkit-scrollbar {
  display: none;
}

.fona-chip {
  flex-shrink: 0;
  padding: 5px 11px;
  border-radius: var(--fona-radius-full);
  border: 1px solid var(--fona-border-active);
  background: rgba(0, 137, 123, 0.06);
  color: var(--fona-primary-light);
  font-family: var(--fona-font);
  font-size: 11.5px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--fona-transition), color var(--fona-transition), border-color var(--fona-transition), transform var(--fona-transition);
  outline: none;
  line-height: 1.3;
}

.fona-chip:hover {
  background: rgba(0, 137, 123, 0.18);
  color: var(--fona-white);
  border-color: var(--fona-primary);
  transform: translateY(-1px);
}

.fona-chip:active {
  transform: translateY(0);
}

/* ─── Input Bar ──────────────────────────────────────────────────────────── */

.fona-input-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 14px;
  border-top: 1px solid var(--fona-border);
  background: var(--fona-bg-lighter);
  flex-shrink: 0;
}

.fona-input {
  flex: 1;
  background: var(--fona-bg-input);
  border: 1px solid var(--fona-border);
  border-radius: var(--fona-radius-full);
  padding: 8px 14px;
  font-family: var(--fona-font);
  font-size: 13px;
  color: var(--fona-text);
  outline: none;
  transition: border-color var(--fona-transition), box-shadow var(--fona-transition);
  min-width: 0;
  line-height: 1.4;
}

.fona-input::placeholder {
  color: var(--fona-text-dim);
}

.fona-input:focus {
  border-color: var(--fona-border-active);
  box-shadow: 0 0 0 3px rgba(0, 137, 123, 0.1);
}

.fona-mic-btn,
.fona-send-btn {
  width: 34px;
  height: 34px;
  border-radius: var(--fona-radius-full);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  outline: none;
  transition: background var(--fona-transition), color var(--fona-transition), transform var(--fona-transition);
  flex-shrink: 0;
}

.fona-mic-btn {
  background: var(--fona-bg-input);
  color: var(--fona-text-muted);
  border: 1px solid var(--fona-border);
}

.fona-mic-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--fona-text);
}

/* Listening state — pulsing red */
.fona-mic-btn.listening {
  background: rgba(239, 68, 68, 0.15);
  color: var(--fona-red);
  border-color: rgba(239, 68, 68, 0.4);
  animation: fona-mic-pulse 1s ease-in-out infinite;
}

@keyframes fona-mic-pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0);
  }
  50% {
    box-shadow: 0 0 0 6px rgba(239, 68, 68, 0.2);
  }
}

.fona-send-btn {
  background: linear-gradient(135deg, var(--fona-primary) 0%, var(--fona-primary-dark) 100%);
  color: var(--fona-white);
  box-shadow: 0 2px 8px rgba(0, 137, 123, 0.3);
}

.fona-send-btn:hover {
  background: linear-gradient(135deg, #009688 0%, var(--fona-primary) 100%);
  transform: scale(1.05);
  box-shadow: 0 3px 12px rgba(0, 137, 123, 0.45);
}

.fona-send-btn:active {
  transform: scale(0.97);
}

/* ─── Scrollbar styling for Firefox ─────────────────────────────────────── */

.fona-panel-messages {
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.12) transparent;
}

/* ─── Responsive: Mobile ─────────────────────────────────────────────────── */

@media (max-width: 480px) {
  .fona-fab {
    bottom: 16px;
    right: 16px;
  }

  .fona-panel {
    right: 0;
    bottom: 0;
    width: 100vw;
    max-height: 75vh;
    border-radius: var(--fona-radius-lg) var(--fona-radius-lg) 0 0;
    border-left: none;
    border-right: none;
    border-bottom: none;
  }

  .fona-panel--open {
    transform: translateY(0) scale(1);
  }

  /* Panel closed state for mobile */
  .fona-panel:not(.fona-panel--open) {
    transform: translateY(100%) scale(1);
  }

  .fona-bubble {
    max-width: calc(100vw - 100px);
  }

  .fona-fab-tooltip {
    display: none;
  }
}

/* ─── Reduced motion ─────────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  .fona-fab {
    animation: none;
  }

  .fona-typing span {
    animation: fona-typing-opacity 1.2s ease-in-out infinite;
  }

  .fona-typing span:nth-child(2) {
    animation-delay: 0.2s;
  }

  .fona-typing span:nth-child(3) {
    animation-delay: 0.4s;
  }

  @keyframes fona-typing-opacity {
    0%, 80%, 100% { opacity: 0.3; }
    40%           { opacity: 1; }
  }

  .fona-mic-btn.listening {
    animation: none;
  }

  .fona-msg {
    animation: none;
  }

  .fona-fab-badge {
    animation: none;
  }

  .fona-panel {
    transition:
      opacity 0.15s ease,
      visibility 0.15s ease,
      transform 0.15s ease;
  }
}

/* ─── Focus visible (keyboard nav) ──────────────────────────────────────── */

.fona-fab:focus-visible {
  outline: 2px solid var(--fona-primary);
  outline-offset: 3px;
}

.fona-chip:focus-visible,
.fona-header-btn:focus-visible,
.fona-mic-btn:focus-visible,
.fona-send-btn:focus-visible {
  outline: 2px solid var(--fona-primary);
  outline-offset: 2px;
}

.fona-input:focus-visible {
  border-color: var(--fona-primary);
  box-shadow: 0 0 0 3px rgba(0, 137, 123, 0.15);
}

/* ─── Slide-up animation for panel (alternative to scale) ───────────────── */

@keyframes fona-slide-up {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Voice output button active state highlight */
#fona-voice-output-btn.active svg {
  stroke: var(--fona-primary-light);
}

/* Clear button hover */
#fona-clear-btn:hover {
  color: var(--fona-red);
  background: rgba(239, 68, 68, 0.08);
}