/* ── Auth Screen ── */
.auth-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 16px;
    background: radial-gradient(ellipse at top, #1a1040 0%, var(--bg) 60%);
}

.auth-card {
    width: 100%;
    max-width: 400px;
    background: var(--glass);
    border: var(--glass-b);
    border-radius: 24px;
    padding: 32px 28px;
    backdrop-filter: blur(20px);
}

.auth-logo {
    text-align: center;
    margin-bottom: 32px;
}

.auth-logo-icon {
    width: 68px;
    height: 68px;
    background: linear-gradient(135deg, var(--accent), #9c95ff);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px;
    box-shadow: var(--accent-glow);
}

.auth-logo-icon svg {
    width: 34px;
    height: 34px;
    color: white;
}

.auth-logo-name {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #fff, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.auth-logo-sub {
    font-size: .78rem;
    color: var(--text-sub);
    margin-top: 4px;
}

.auth-error {
    background: var(--expense-l);
    border: 1px solid rgba(248, 113, 113, .3);
    color: var(--expense);
    padding: 10px 14px;
    border-radius: var(--r-sm);
    font-size: .85rem;
    margin-bottom: 16px;
}

.spin-icon {
    animation: spin .8s linear infinite;
    display: inline-block;
}