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

body {
    font-family: monospace;
    background: white;
    color: black;
}

/* Страница входа */
.login-container {
    max-width: 300px;
    margin: 100px auto;
    padding: 20px;
    border: 1px solid black;
}

.login-container h1 {
    margin-bottom: 20px;
    font-size: 18px;
}

.login-container input {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid black;
    font-family: monospace;
}

.login-container button {
    width: 100%;
    padding: 10px;
    background: black;
    color: white;
    border: none;
    cursor: pointer;
    font-family: monospace;
}

.login-container #error {
    color: black;
    margin-top: 10px;
    font-weight: bold;
}

/* Страница чата */
.chat-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-width: 800px;
    margin: 0 auto;
    border-left: 1px solid black;
    border-right: 1px solid black;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    border-bottom: 1px solid black;
    background: black;
    color: white;
}

.header button {
    background: white;
    color: black;
    border: none;
    padding: 5px 10px;
    cursor: pointer;
    font-family: monospace;
}

.messages {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
}

.message {
    border: 1px solid black;
    margin-bottom: 10px;
    padding: 10px;
}

.message-header {
    margin-bottom: 5px;
}

.download-btn {
    background: white;
    border: 1px solid black;
    padding: 3px 8px;
    cursor: pointer;
    font-family: monospace;
    font-size: 12px;
}

.download-btn:hover {
    background: black;
    color: white;
}

.message-info {
    margin-bottom: 5px;
    font-size: 12px;
}

.time {
    color: #666;
}

.message-text {
    white-space: pre-wrap;
    word-break: break-word;
}

.input-area {
    display: flex;
    border-top: 1px solid black;
    padding: 10px;
    gap: 10px;
}

.input-area textarea {
    flex: 1;
    padding: 10px;
    border: 1px solid black;
    resize: none;
    min-height: 60px;
    font-family: monospace;
}

.input-area button {
    background: black;
    color: white;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    font-family: monospace;
}

/* Мобильная версия */
@media (max-width: 600px) {
    .chat-container {
        border: none;
    }
    
    .input-area {
        flex-direction: column;
    }
    
    .input-area button {
        width: 100%;
    }
    
    .login-container {
        margin: 50px 20px;
        max-width: none;
    }
}