* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: #080808;
    color: #ffffff;
}

a {
    color: inherit;
    text-decoration: none;
}

.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 250px;
    height: 100vh;
    background: #111;
    border-right: 1px solid #1f1f1f;
    padding: 24px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 34px;
}

.brand-icon {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    background: #22c55e;
    color: #000;
    display: grid;
    place-items: center;
    font-weight: 900;
}

.brand strong {
    display: block;
    font-size: 18px;
}

.brand span {
    color: #888;
    font-size: 13px;
}

.sidebar nav {
    display: grid;
    gap: 10px;
}

.sidebar nav a {
    padding: 13px 14px;
    border-radius: 14px;
    color: #d5d5d5;
    background: #171717;
}

.sidebar nav a:hover {
    background: #22c55e;
    color: #000;
}

.sidebar nav a.danger:hover {
    background: #ef4444;
    color: #fff;
}

.main-content,
.chat-page {
    margin-left: 250px;
    padding: 32px;
}

.primary-btn,
button {
    border: none;
    border-radius: 14px;
    background: #22c55e;
    color: #000;
    padding: 13px 18px;
    font-weight: 900;
    cursor: pointer;
}

input,
textarea {
    width: 100%;
    border: 1px solid #2a2a2a;
    background: #111;
    color: #fff;
    border-radius: 14px;
    padding: 14px;
    outline: none;
}

label {
    display: block;
    margin: 14px 0 8px;
    color: #cfcfcf;
}

.alert {
    background: rgba(239, 68, 68, 0.14);
    border: 1px solid rgba(239, 68, 68, 0.35);
    color: #fecaca;
    padding: 12px;
    border-radius: 12px;
    margin: 14px 0;
}

@media (max-width: 800px) {
    .sidebar {
        position: relative;
        width: 100%;
        height: auto;
    }

    .main-content,
    .chat-page {
        margin-left: 0;
        padding: 18px;
    }
}