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

body {
    font-family: monospace;
    display: flex;
    flex-direction: column;
    height: 100vh;
    background: #1a1a2e;
    color: #e0e0e0;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 1rem;
    background: #0f0f23;
    border-bottom: 1px solid #333;
}

.user-setup {
    display: flex;
    gap: 0.5rem;
}

#username {
    padding: 0.4rem;
    background: #16213e;
    border: 1px solid #333;
    border-radius: 4px;
    color: #e0e0e0;
}

#login-btn {
    padding: 0.4rem 0.8rem;
    background: #6d4aff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.online-users {
    font-size: 0.9rem;
}

#online-list {
    color: #4ade80;
}

#message-log {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
}

#message-log p {
    padding: 0.4rem 0.6rem;
    margin-bottom: 0.3rem;
    background: #16213e;
    border-radius: 4px;
    word-break: break-word;
}

#publish-form {
    display: flex;
    padding: 1rem;
    background: #0f0f23;
    border-top: 1px solid #333;
    gap: 0.5rem;
}

#recipient-select {
    flex: 1;
    padding: 0.5rem;
    background: #16213e;
    border: 1px solid #333;
    border-radius: 4px;
    color: #e0e0e0;
    font-family: monospace;
}

#message-input {
    flex: 2;
    padding: 0.5rem;
    background: #16213e;
    border: 1px solid #333;
    border-radius: 4px;
    color: #e0e0e0;
    font-family: monospace;
}

#publish-form button {
    padding: 0.5rem 1rem;
    background: #6d4aff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

#publish-form button:hover {
    background: #5a3acc;
}