/* ==========================================================================
   AI-Чат G-Family — Styles
   Минималистичный виджет для iframe (автозапчасти)
   ========================================================================== */

/* --- CSS Variables --- */
:root {
  --color-primary: #00A6E1;
  --color-primary-hover: #008bbf;
  --color-bg: #FFFFFF;
  --color-text: #000000;
  --color-text-secondary: #6b7280;
  --color-light-bg: #F5F5F5;
  --color-border: #E0E0E0;
  --color-error-bg: #FFE5E5;
  --color-error-text: #D32F2F;
  --color-user-msg: #00A6E1;
  --color-user-msg-text: #FFFFFF;
  --radius-bubble: 18px;
  --radius-input: 20px;
  --header-height: 54px;
  --input-area-min-height: 62px;
  --font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  width: 100%;
  overflow: hidden;
  font-family: var(--font-family);
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Chat Container --- */
.chat-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  max-width: 100%;
  overflow: hidden;
}

/* --- Header --- */
.chat-header {
  flex-shrink: 0;
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 16px;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  gap: 10px;
}

.chat-header__icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.chat-header__icon svg {
  width: 18px;
  height: 18px;
  fill: #fff;
}

.chat-header__title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-header__status {
  font-size: 11px;
  color: var(--color-text-secondary);
  margin-top: 1px;
}

/* --- Messages Area --- */
.messages-container {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 16px;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

/* Custom scrollbar */
.messages-container::-webkit-scrollbar {
  width: 5px;
}

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

.messages-container::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}

.messages-container::-webkit-scrollbar-thumb:hover {
  background: #c0c0c0;
}

/* --- Message Bubble --- */
.message {
  display: flex;
  margin-bottom: 10px;
  animation: messageAppear 0.3s ease-out;
}

@keyframes messageAppear {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.message--user {
  justify-content: flex-end;
}

.message--assistant {
  justify-content: flex-start;
}

.message__bubble {
  max-width: 75%;
  padding: 10px 14px;
  border-radius: var(--radius-bubble);
  word-wrap: break-word;
  overflow-wrap: break-word;
  white-space: pre-wrap;
  font-size: 14px;
  line-height: 1.45;
}

.message--user .message__bubble {
  background: var(--color-user-msg);
  color: var(--color-user-msg-text);
  border-bottom-right-radius: 6px;
}

.message--assistant .message__bubble {
  background: var(--color-light-bg);
  color: var(--color-text);
  border-bottom-left-radius: 6px;
}

.message__time {
  font-size: 10px;
  color: var(--color-text-secondary);
  margin-top: 4px;
  padding: 0 4px;
}

.message--user .message__time {
  text-align: right;
}

.message--assistant .message__time {
  text-align: left;
}

/* --- Welcome Message --- */
.message--welcome .message__bubble {
  background: var(--color-light-bg);
  color: var(--color-text);
  border-bottom-left-radius: 6px;
  font-size: 13px;
  line-height: 1.55;
}

/* --- Typing Indicator --- */
.typing-indicator {
  display: none;
  justify-content: flex-start;
  margin-bottom: 10px;
  animation: messageAppear 0.3s ease-out;
}

.typing-indicator.visible {
  display: flex;
}

.typing-indicator__bubble {
  background: var(--color-light-bg);
  border-radius: var(--radius-bubble);
  border-bottom-left-radius: 6px;
  padding: 12px 18px;
  display: flex;
  align-items: center;
  gap: 5px;
}

.typing-indicator__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-primary);
  opacity: 0.5;
  animation: typingBounce 1.4s infinite ease-in-out;
}

.typing-indicator__dot:nth-child(1) {
  animation-delay: 0s;
}

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

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

@keyframes typingBounce {
  0%, 60%, 100% {
    transform: translateY(0);
    opacity: 0.4;
  }
  30% {
    transform: translateY(-6px);
    opacity: 1;
  }
}

/* --- Input Area --- */
.input-area {
  flex-shrink: 0;
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 10px 12px;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  min-height: var(--input-area-min-height);
}

.input-area__field {
  flex: 1;
  resize: none;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-input);
  padding: 10px 16px;
  font-family: var(--font-family);
  font-size: 14px;
  line-height: 1.4;
  color: var(--color-text);
  background: var(--color-bg);
  outline: none;
  min-height: 40px;
  max-height: 120px;
  overflow-y: auto;
  transition: border-color 0.2s;
}

.input-area__field::placeholder {
  color: #aaa;
}

.input-area__field:focus {
  border-color: var(--color-primary);
}

.input-area__send {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, opacity 0.2s, transform 0.15s;
  outline: none;
}

.input-area__send:hover:not(:disabled) {
  background: var(--color-primary-hover);
  transform: scale(1.05);
}

.input-area__send:active:not(:disabled) {
  transform: scale(0.95);
}

.input-area__send:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.input-area__send svg {
  width: 18px;
  height: 18px;
  fill: #fff;
  margin-left: 1px;
}

/* --- Character Counter --- */
.input-area__counter {
  display: none;
  font-size: 10px;
  color: var(--color-text-secondary);
  position: absolute;
  right: 60px;
  bottom: 4px;
}

.input-area__counter.warning {
  color: var(--color-error-text);
}

/* --- Error Toast --- */
.error-toast {
  position: fixed;
  top: 12px;
  left: 12px;
  right: 12px;
  padding: 12px 16px;
  background: var(--color-error-bg);
  color: var(--color-error-text);
  border-radius: 10px;
  font-size: 13px;
  line-height: 1.4;
  z-index: 100;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  opacity: 0;
  transform: translateY(-12px);
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
}

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

.error-toast__close {
  position: absolute;
  top: 8px;
  right: 10px;
  background: none;
  border: none;
  color: var(--color-error-text);
  font-size: 18px;
  cursor: pointer;
  line-height: 1;
  padding: 0 2px;
}

/* --- Load More Button --- */
.load-more-btn {
  display: block;
  margin: 0 auto 12px;
  padding: 6px 16px;
  background: var(--color-light-bg);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  font-size: 12px;
  cursor: pointer;
  transition: background 0.2s;
}

.load-more-btn:hover {
  background: var(--color-border);
}

/* --- Empty state --- */
.messages-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--color-text-secondary);
  font-size: 13px;
  text-align: center;
  padding: 20px;
}

/* --- Loading Overlay (initial) --- */
.loading-overlay {
  position: absolute;
  inset: 0;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  transition: opacity 0.3s;
}

.loading-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.loading-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* --- Responsive --- */
@media (max-width: 360px) {
  .message__bubble {
    max-width: 85%;
    font-size: 13px;
  }

  .chat-header__title {
    font-size: 14px;
  }

  .messages-container {
    padding: 12px;
  }
}

@media (min-width: 500px) {
  .message__bubble {
    max-width: 70%;
  }
}