.login-body {
    display: grid;
    place-items: center;
    padding: 1.5rem;
}

.login-shell {
    display: grid;
    grid-template-columns: minmax(280px, 1.15fr) minmax(320px, 0.95fr);
    width: min(1120px, 100%);
    min-height: min(760px, calc(100vh - 3rem));
    border: 1px solid var(--surface-border);
    border-radius: 32px;
    overflow: hidden;
    box-shadow: var(--shadow);
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(18px);
}

.brand-panel,
.login-panel {
    padding: clamp(1.5rem, 3vw, 3rem);
}

.brand-panel {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 2rem;
    background: linear-gradient(160deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0.06));
}

.brand-stack {
    display: grid;
    gap: 1.5rem;
    align-content: start;
}

.brand-copy {
    display: grid;
    gap: 0.8rem;
    max-width: 30rem;
}

.brand-logo {
    width: clamp(220px, 28vw, 340px);
    height: auto;
    filter: drop-shadow(0 20px 36px rgba(0, 0, 0, 0.18));
}

.brand-panel h1,
.login-card h2 {
    margin: 0;
    font-size: clamp(2rem, 4vw, 3.4rem);
    line-height: 0.95;
}

.lead {
    max-width: 32rem;
    font-size: 1.05rem;
    line-height: 1.7;
}

.demo-card,
.login-card {
    border: 1px solid var(--surface-border);
    border-radius: 24px;
    background: var(--surface);
    backdrop-filter: blur(12px);
}

.demo-card {
    padding: 1.25rem 1.4rem;
    color: var(--muted);
}

.seed-list {
    display: grid;
    gap: 0.6rem;
}

.seed-list p {
    margin: 0;
}

.demo-title {
    margin-top: 0;
    margin-bottom: 0.8rem;
    color: var(--text);
    font-weight: 700;
}

.login-panel {
    display: grid;
    align-content: center;
    gap: 1.5rem;
    background: var(--surface-strong);
}

.panel-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.status-dot {
    width: 0.8rem;
    height: 0.8rem;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 0 0.45rem rgba(103, 208, 148, 0.12);
}

.login-card {
    display: grid;
    gap: 1.5rem;
    padding: clamp(1.5rem, 3vw, 2rem);
    box-shadow: var(--shadow);
}

.login-form {
    display: grid;
    gap: 1rem;
}

.field {
    display: grid;
    gap: 0.55rem;
}

.field span {
    font-weight: 700;
}

.field input {
    width: 100%;
    padding: 0.95rem 1rem;
    border-radius: 16px;
    border: 1px solid var(--surface-border);
    background: rgba(255, 255, 255, 0.58);
    color: var(--text);
    outline: none;
}

:root[data-theme="dark"] .field input {
    background: rgba(14, 21, 27, 0.76);
}

.field input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(199, 95, 47, 0.16);
}

.feedback {
    min-height: 1.5rem;
    margin: 0;
    color: var(--muted);
}

.feedback.is-error {
    color: #cf5348;
}

.feedback.is-success {
    color: var(--success);
}

@media (max-width: 860px) {
    .login-shell {
        grid-template-columns: 1fr;
    }

    .brand-logo {
        width: min(100%, 320px);
    }
}