* {
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    margin: 0;
    background: #0b0b0b;
    color: white;
    height: 100vh;
}

/* LOGIN */
.login-screen {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.login-box {
    background: #140000;
    padding: 40px;
    border-radius: 10px;
    border: 2px solid darkred;
    text-align: center;
    width: 300px;
}

.login-box h1 {
    margin-bottom: 20px;
}

.login-box input {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border: none;
}

.login-box button {
    width: 100%;
    padding: 10px;
    background: darkred;
    border: none;
    color: white;
    cursor: pointer;
}

/* CHAT */
.chat-screen {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.header {
    background: #1a0000;
    padding: 15px;
    display: flex;
    justify-content: space-between;
    border-bottom: 1px solid darkred;
}

.chat-area {
    flex: 1;
    padding: 15px;
    overflow-y: auto;
}

.message {
    margin-bottom: 8px;
}

.message .user {
    color: #ff4d4d;
    font-weight: bold;
}

.system {
    color: #aaa;
    font-style: italic;
    margin-bottom: 6px;
}

.input-bar {
    display: flex;
    padding: 15px;
    background: #1a0000;
    border-top: 1px solid darkred;
}

.input-bar input {
    flex: 1;
    padding: 10px;
    border: none;
}

.input-bar button {
    margin-left: 10px;
    padding: 10px 20px;
    background: darkred;
    border: none;
    color: white;
    cursor: pointer;
}

.hidden {
    display: none;
}