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

body {
    display: flex;
    height: 100vh;
    background: #0f0f0f;
    color: white;
}

/* SIDEBAR */
.sidebar {
    width: 250px;
    background: #151515;
    padding: 10px;
    border-right: 1px solid #222;
}

.logo {
    color: #00ff88;
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 10px;
}

.hub {
    padding: 10px;
    margin: 5px 0;
    background: #1e1e1e;
    border-radius: 8px;
    cursor: pointer;
}

/* MAIN */
.main {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.header {
    padding: 15px;
    background: #151515;
    border-bottom: 1px solid #222;
    color: #00ff88;
    font-weight: bold;
}

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

.msg {
    background: #1b1b1b;
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 8px;
}

.system {
    color: #aaa;
}

.input {
    display: flex;
    padding: 10px;
    background: #151515;
    border-top: 1px solid #222;
}

input {
    flex: 1;
    padding: 10px;
    border: none;
    outline: none;
    background: #1e1e1e;
    color: white;
    border-radius: 8px;
}

button {
    margin-left: 10px;
    background: #00ff88;
    border: none;
    padding: 10px 15px;
    cursor: pointer;
    border-radius: 8px;
    font-weight: bold;
}