:root {
    --bg: #0b0f17;
    --surface: #131a26;
    --border: #243044;
    --text: #e6ebf3;
    --muted: #8b97ab;
    --accent: #4f8cff;
    --accent-2: #7c5cff;
    --danger: #ff6b6b;
}

* { box-sizing: border-box; }

html, body { height: 100%; margin: 0; }

.login-body {
    font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
}

.login {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
}

.login-brand {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    gap: 1rem;
    padding: 4rem;
    background:
        radial-gradient(60rem 40rem at 0% 0%, rgba(79, 140, 255, .22), transparent 60%),
        radial-gradient(50rem 40rem at 100% 100%, rgba(124, 92, 255, .18), transparent 60%),
        var(--bg);
    border-right: 1px solid var(--border);
}

.logo-slot {
    width: 160px;
    height: 160px;
    display: grid;
    place-items: center;
    border: 2px dashed var(--border);
    border-radius: 24px;
    color: var(--muted);
    letter-spacing: .2em;
    font-size: .8rem;
    background: rgba(255, 255, 255, .02);
    overflow: hidden;
}

.logo-slot img { max-width: 100%; max-height: 100%; }

.login-brand h1 {
    margin: .5rem 0 0;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    letter-spacing: -.02em;
    background: linear-gradient(90deg, #fff, #a9c4ff);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.login-brand p {
    margin: 0;
    max-width: 28rem;
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--muted);
}

.login-panel {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    gap: 1.5rem;
}

.login-card {
    width: 100%;
    max-width: 400px;
    padding: 2.25rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, .45);
}

.login-card h2 { margin: 0 0 .25rem; font-size: 1.6rem; }
.muted { margin: 0 0 1.5rem; color: var(--muted); }

.field { margin-bottom: 1.1rem; }
.field label { display: block; margin-bottom: .4rem; font-size: .85rem; color: var(--muted); }

.field input {
    width: 100%;
    padding: .8rem 1rem;
    color: var(--text);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color .15s, box-shadow .15s;
}

.field input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(79, 140, 255, .25);
}

.error { display: block; margin-top: .35rem; font-size: .8rem; color: var(--danger); }

.alert {
    margin-bottom: 1rem;
    padding: .7rem 1rem;
    font-size: .9rem;
    color: var(--danger);
    background: rgba(255, 107, 107, .1);
    border: 1px solid rgba(255, 107, 107, .35);
    border-radius: 10px;
}

.btn {
    width: 100%;
    margin-top: .5rem;
    padding: .85rem;
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    border: 0;
    border-radius: 10px;
    cursor: pointer;
    transition: transform .1s, filter .15s;
}

.btn:hover { filter: brightness(1.1); }
.btn:active { transform: translateY(1px); }

.login-panel footer { font-size: .8rem; color: var(--muted); }

@media (max-width: 820px) {
    .login { grid-template-columns: 1fr; }
    .login-brand { padding: 2.5rem 1.5rem; align-items: center; text-align: center; border-right: 0; border-bottom: 1px solid var(--border); }
    .logo-slot { width: 100px; height: 100px; }
}

.topbar {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 2rem;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.muted-inline { color: var(--muted); font-size: .9rem; }
.topbar-end { margin-left: auto; }

.btn-ghost {
    width: auto;
    margin: 0;
    padding: .5rem 1.1rem;
    font-size: .9rem;
    background: transparent;
    border: 1px solid var(--border);
}

.config { display: flex; justify-content: center; padding: 3rem 1.5rem; }
.config-card { max-width: 560px; }

.row { display: flex; gap: 1rem; }
.row .grow { flex: 1; }
.row .port { width: 120px; }

.alert.success {
    color: #5ee6a8;
    background: rgba(94, 230, 168, .1);
    border-color: rgba(94, 230, 168, .35);
}