* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #14b8a6;
    --primary-hover: #0d9488;
    --accent: #06b6d4;
    --background: #0f172a;
    --surface: rgba(255, 255, 255, 0.05);
    --surface-light: rgba(255, 255, 255, 0.1);
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --border: rgba(20, 184, 166, 0.2);
    --shadow: rgba(0, 0, 0, 0.3);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #0f172a;
    background-image: 
        radial-gradient(at 0% 0%, rgba(20, 184, 166, 0.2) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(6, 182, 212, 0.2) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(20, 184, 166, 0.1) 0px, transparent 50%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 900px;
    height: 90vh;
    max-height: 800px;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Заголовок */
.chat-header {
    background: rgba(20, 184, 166, 0.1);
    backdrop-filter: blur(10px);
    padding: 20px 30px;
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
}

.chat-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.header-content {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo {
    position: relative;
    animation: float 3s ease-in-out infinite;
}

.logo::after {
    content: '';
    position: absolute;
    inset: -5px;
    border-radius: 50%;
    background: var(--primary);
    filter: blur(10px);
    opacity: 0.3;
    z-index: -1;
    animation: pulse 2s infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-5px);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.3;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.1);
    }
}

.header-text h1 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 4px;
}

.status {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
    display: flex;
    align-items: center;
    gap: 6px;
}

.status::before {
    content: '';
    width: 8px;
    height: 8px;
    background: #4ade80;
    border-radius: 50%;
    display: inline-block;
    box-shadow: 0 0 10px #4ade80;
    animation: blink 2s infinite;
}

@keyframes blink {
    0%, 100% {
        opacity: 1;
        box-shadow: 0 0 10px #4ade80;
    }
    50% {
        opacity: 0.4;
        box-shadow: 0 0 5px #4ade80;
    }
}

.clear-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.clear-btn:hover {
    background: rgba(239, 68, 68, 0.2);
    border-color: rgba(239, 68, 68, 0.3);
    transform: rotate(15deg) scale(1.1);
}

/* Контейнер чата */
.chat-container {
    flex: 1;
    overflow-y: auto;
    padding: 30px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    background: rgba(0, 0, 0, 0.1);
}

.chat-container::-webkit-scrollbar {
    width: 6px;
}

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

.chat-container::-webkit-scrollbar-thumb {
    background: rgba(20, 184, 166, 0.3);
    border-radius: 10px;
}

.chat-container::-webkit-scrollbar-thumb:hover {
    background: rgba(20, 184, 166, 0.5);
}

/* Приветственное сообщение */
.welcome-message {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-primary);
    animation: fadeIn 0.8s ease-out;
}

.welcome-icon {
    font-size: 64px;
    margin-bottom: 20px;
    filter: drop-shadow(0 0 20px rgba(20, 184, 166, 0.5));
    animation: wave 2s infinite;
}

@keyframes wave {
    0%, 100% {
        transform: rotate(0deg) scale(1);
    }
    25% {
        transform: rotate(20deg) scale(1.1);
    }
    75% {
        transform: rotate(-20deg) scale(1.1);
    }
}

.welcome-message h2 {
    font-size: 32px;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.welcome-message p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.welcome-features {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.welcome-features span {
    padding: 8px 16px;
    background: rgba(20, 184, 166, 0.1);
    border: 1px solid rgba(20, 184, 166, 0.3);
    border-radius: 20px;
    font-size: 13px;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.welcome-features span:hover {
    background: rgba(20, 184, 166, 0.2);
    transform: translateY(-2px);
}

/* Сообщения */
.message {
    display: flex;
    gap: 12px;
    max-width: 85%;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.message.user {
    margin-left: auto;
    flex-direction: row-reverse;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
    position: relative;
}

.message.user .avatar {
    background: rgba(20, 184, 166, 0.2);
    border: 2px solid var(--primary);
    box-shadow: 0 0 20px rgba(20, 184, 166, 0.3);
}

.message.assistant .avatar {
    background: rgba(6, 182, 212, 0.2);
    border: 2px solid var(--accent);
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.3);
}

.message-content {
    flex: 1;
}

.message-bubble {
    padding: 14px 18px;
    border-radius: 18px;
    line-height: 1.5;
    word-wrap: break-word;
    position: relative;
    backdrop-filter: blur(10px);
}

/* Изображения в сообщениях */
.message-image {
    max-width: 100%;
    max-height: 400px;
    border-radius: 12px;
    margin-bottom: 8px;
    cursor: zoom-in;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
    object-fit: contain;
}

.message-image:hover {
    transform: scale(1.02);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
    border-color: var(--primary);
}

.message-text {
    line-height: 1.6;
}

/* Markdown стили */
.message-text h1,
.message-text h2,
.message-text h3,
.message-text h4 {
    margin: 16px 0 8px 0;
    color: var(--text-primary);
    font-weight: 600;
}

.message-text h1 { font-size: 24px; }
.message-text h2 { font-size: 20px; }
.message-text h3 { font-size: 18px; }
.message-text h4 { font-size: 16px; }

.message-text p {
    margin: 8px 0;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.message-text ul,
.message-text ol {
    margin: 8px 0;
    padding-left: 24px;
}

.message-text li {
    margin: 4px 0;
}

.message-text blockquote {
    margin: 12px 0;
    padding: 8px 16px;
    border-left: 4px solid var(--primary);
    background: rgba(20, 184, 166, 0.05);
    border-radius: 4px;
}

.message-text a {
    color: var(--primary);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s;
}

.message-text a:hover {
    border-bottom-color: var(--primary);
}

.message-text strong {
    font-weight: 600;
    color: var(--text-primary);
}

.message-text em {
    font-style: italic;
}

.message-text hr {
    margin: 16px 0;
    border: none;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Блоки кода */
.message-text pre {
    position: relative;
    margin: 12px 0;
    padding: 16px;
    padding-top: 40px; /* Место для кнопки копирования */
    background: #282c34;
    border-radius: 8px;
    overflow-x: auto;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    max-width: 100%;
}

.message-text pre::-webkit-scrollbar {
    height: 8px;
}

.message-text pre::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 4px;
}

.message-text pre::-webkit-scrollbar-thumb {
    background: rgba(20, 184, 166, 0.3);
    border-radius: 4px;
}

.message-text pre::-webkit-scrollbar-thumb:hover {
    background: rgba(20, 184, 166, 0.5);
}

.message-text pre code {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.5;
    color: #abb2bf;
    background: transparent;
    padding: 0;
    border-radius: 0;
}

/* Инлайн код */
.message-text code {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 14px;
    padding: 2px 6px;
    background: rgba(20, 184, 166, 0.1);
    border: 1px solid rgba(20, 184, 166, 0.3);
    border-radius: 4px;
    color: var(--primary);
}

.message-text pre code {
    border: none;
}

/* Кнопка копирования кода */
.copy-code-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 4px 8px;
    background: rgba(20, 184, 166, 0.15);
    border: 1px solid rgba(20, 184, 166, 0.3);
    border-radius: 6px;
    color: var(--primary);
    font-size: 11px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: all 0.2s ease;
    backdrop-filter: blur(10px);
    z-index: 10;
}

.copy-code-btn:hover {
    background: rgba(20, 184, 166, 0.3);
    border-color: var(--primary);
    transform: scale(1.05);
}

.copy-code-btn:active {
    transform: scale(0.95);
}

.copy-code-btn.copied {
    background: rgba(74, 222, 128, 0.2);
    border-color: #4ade80;
    color: #4ade80;
}

.copy-code-btn svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

/* Таблицы */
.message-text table {
    width: 100%;
    margin: 12px 0;
    border-collapse: collapse;
    border-radius: 8px;
    overflow: hidden;
}

.message-text th,
.message-text td {
    padding: 10px 12px;
    text-align: left;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.message-text th {
    background: rgba(20, 184, 166, 0.2);
    font-weight: 600;
    color: var(--text-primary);
}

.message-text tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.02);
}

/* Математические формулы */
.message-text .katex {
    font-size: 1.1em;
    color: var(--text-primary);
}

.message-text .katex-display {
    margin: 16px 0;
    padding: 12px;
    background: rgba(20, 184, 166, 0.05);
    border: 1px solid rgba(20, 184, 166, 0.2);
    border-radius: 8px;
    overflow-x: auto;
}

.message-text .katex-display::-webkit-scrollbar {
    height: 6px;
}

.message-text .katex-display::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 3px;
}

.message-text .katex-display::-webkit-scrollbar-thumb {
    background: rgba(20, 184, 166, 0.3);
    border-radius: 3px;
}

/* Анимация для новых элементов */
.message-text > * {
    animation: fadeInUp 0.3s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Выделение выбранного текста */
.message-text ::selection {
    background: rgba(20, 184, 166, 0.3);
    color: var(--text-primary);
}

/* Чекбоксы в задачах */
.message-text input[type="checkbox"] {
    margin-right: 8px;
    cursor: pointer;
}

/* Документы в сообщениях */
.message-document {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: rgba(20, 184, 166, 0.1);
    border: 1px solid rgba(20, 184, 166, 0.3);
    border-radius: 12px;
    margin-bottom: 8px;
    transition: all 0.3s ease;
}

.message-document:hover {
    background: rgba(20, 184, 166, 0.2);
    transform: translateX(4px);
}

.message-document .doc-icon {
    font-size: 20px;
}

.message-document .doc-name {
    font-size: 13px;
    color: var(--text-primary);
    max-width: 200px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.message.user .message-bubble {
    background: rgba(20, 184, 166, 0.15);
    border: 1px solid rgba(20, 184, 166, 0.3);
    color: var(--text-primary);
    border-bottom-right-radius: 4px;
    box-shadow: 0 4px 12px rgba(20, 184, 166, 0.1);
}

.message.assistant .message-bubble {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom-left-radius: 4px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.message-time {
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 6px;
    padding: 0 4px;
}

/* Индикатор печатания */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 14px 18px;
}

.typing-dot {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--primary);
    animation: typing 1.4s infinite;
}

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

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

@keyframes typing {
    0%, 60%, 100% {
        transform: translateY(0) scale(1);
        opacity: 0.5;
    }
    30% {
        transform: translateY(-10px) scale(1.2);
        opacity: 1;
    }
}

/* Область ввода */
.input-container {
    padding: 16px 24px;
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.input-wrapper {
    display: flex;
    gap: 10px;
    align-items: flex-end;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 14px;
    padding: 10px 14px;
    transition: all 0.3s ease;
}

/* Кнопка прикрепления файлов */
.attach-btn {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: none;
    background: rgba(255, 255, 255, 0.05);
    color: var(--primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    flex-shrink: 0;
    position: relative;
}

.attach-btn:hover {
    background: rgba(20, 184, 166, 0.2);
    transform: scale(1.05);
}

.attach-btn:active {
    transform: scale(0.95);
}

/* Контейнер вложений */
.attachments-container {
    padding: 12px 24px;
    animation: slideDown 0.3s ease-out;
    max-height: 300px;
    overflow-y: auto;
}

.attachments-container::-webkit-scrollbar {
    width: 6px;
}

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

.attachments-container::-webkit-scrollbar-thumb {
    background: rgba(20, 184, 166, 0.3);
    border-radius: 10px;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.attachments-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

/* Превью файла */
.attachment-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    border: 2px solid rgba(20, 184, 166, 0.3);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    background: rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    animation: fadeIn 0.3s ease-out;
}

.attachment-item:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.attachment-item.image {
    max-width: 150px;
}

.attachment-item img {
    display: block;
    max-width: 150px;
    height: auto;
    max-height: 150px;
    object-fit: cover;
}

.attachment-item.document {
    padding: 12px 16px;
    min-width: 150px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.document-icon {
    width: 40px;
    height: 40px;
    background: rgba(20, 184, 166, 0.2);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 20px;
}

.document-info {
    flex: 1;
    min-width: 0;
}

.document-name {
    font-size: 12px;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 4px;
}

.document-size {
    font-size: 10px;
    color: var(--text-secondary);
}

.remove-attachment-btn {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: none;
    background: rgba(239, 68, 68, 0.9);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    z-index: 10;
}

.remove-attachment-btn:hover {
    background: rgba(239, 68, 68, 1);
    transform: scale(1.1);
}

/* Drag & Drop область */
.input-container {
    position: relative;
}

.drop-overlay {
    position: absolute;
    inset: 16px;
    background: rgba(20, 184, 166, 0.15);
    backdrop-filter: blur(20px);
    border: 3px dashed var(--primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    pointer-events: none;
    animation: pulse 1.5s infinite;
}

.drop-message {
    text-align: center;
    color: var(--primary);
}

.drop-message svg {
    margin-bottom: 12px;
    animation: bounce 1s infinite;
}

.drop-message p {
    font-size: 18px;
    font-weight: 600;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.input-container.drag-over .drop-overlay {
    display: flex !important;
}

.input-container.drag-over {
    background: rgba(20, 184, 166, 0.05);
}

/* Анимация загрузки файлов */
.attachment-item {
    animation: scaleIn 0.3s ease-out;
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.input-wrapper:focus-within {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 2px rgba(20, 184, 166, 0.2);
}

#messageInput {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-size: 14px;
    color: var(--text-primary);
    resize: none;
    max-height: 100px;
    line-height: 1.4;
    font-family: inherit;
}

#messageInput::placeholder {
    color: var(--text-secondary);
}

.send-btn {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: none;
    background: var(--primary);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
}

.send-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent, rgba(255, 255, 255, 0.2));
    opacity: 0;
    transition: opacity 0.3s;
}

.send-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(20, 184, 166, 0.4);
}

.send-btn:hover:not(:disabled)::before {
    opacity: 1;
}

.send-btn:active:not(:disabled) {
    transform: translateY(0);
}

.send-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.input-footer {
    display: flex;
    justify-content: flex-end;
    margin-top: 6px;
}

.file-count {
    font-size: 12px;
    color: var(--text-secondary);
}

/* Мобильная адаптация */
@media (max-width: 768px) {
    body {
        padding: 0;
    }

    .container {
        height: 100vh;
        max-height: 100vh;
        border-radius: 0;
        border: none;
    }

    .chat-header {
        padding: 16px 20px;
    }

    .header-text h1 {
        font-size: 20px;
    }

    .chat-container {
        padding: 20px 16px;
    }

    .message {
        max-width: 90%;
    }

    .welcome-message {
        padding: 40px 20px;
    }

    .welcome-message h2 {
        font-size: 24px;
    }

    .input-container {
        padding: 16px 20px;
    }

    .attachments-container {
        padding: 12px 20px;
        max-height: 200px;
    }

    .attachment-item.image {
        max-width: 120px;
    }

    .attachment-item img {
        max-width: 120px;
        max-height: 120px;
    }

    .message-image {
        max-width: 100%;
        max-height: 300px;
    }

    .welcome-features {
        gap: 10px;
    }

    .welcome-features span {
        font-size: 12px;
        padding: 6px 12px;
    }

    .message-text pre {
        padding: 12px;
        font-size: 13px;
    }

    .message-text code {
        font-size: 13px;
    }

    .copy-code-btn {
        font-size: 11px;
        padding: 4px 8px;
    }

    .message-text table {
        font-size: 13px;
    }
}

/* Анимация ошибки */
@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-10px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(10px);
    }
}

.error-shake {
    animation: shake 0.5s;
}

/* Дополнительные эффекты */
.message:hover .message-bubble {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.message.user:hover .message-bubble {
    box-shadow: 0 8px 20px rgba(20, 184, 166, 0.2);
}

.message .message-bubble {
    transition: all 0.3s ease;
}

/* Эффект свечения для аватаров */
.avatar {
    transition: all 0.3s ease;
}

.message:hover .avatar {
    transform: scale(1.1);
}