:root {
    --auth-primary: #2F3A45;
    --auth-secondary: #5F6B77;
    --auth-info: #3E5C76;
    --auth-surface: #FFFFFF;
    --auth-text-primary: #1F2933;
    --auth-text-secondary: #52606D;
}

.auth-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background:
        linear-gradient(135deg,
            color-mix(in srgb, var(--auth-primary) 72%, transparent) 0%,
            color-mix(in srgb, var(--auth-info) 68%, transparent) 50%,
            color-mix(in srgb, var(--auth-secondary) 70%, transparent) 100%);
    backdrop-filter: blur(4px);
}

.auth-overlay-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    width: min(100%, 320px);
    padding: 32px 28px;
    border-radius: 12px;
    background: color-mix(in srgb, var(--auth-surface) 95%, transparent);
    border: 1px solid rgba(255, 255, 255, 0.25);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.28);
    backdrop-filter: blur(10px);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    text-align: center;
}

.auth-overlay-logo {
    width: 40px;
    height: 40px;
    object-fit: contain;
    animation: auth-overlay-float 3s ease-in-out infinite;
}

.auth-overlay-spinner {
    width: 44px;
    height: 44px;
    border: 4px solid color-mix(in srgb, var(--auth-primary) 18%, transparent);
    border-top-color: var(--auth-primary);
    border-right-color: var(--auth-info);
    border-radius: 50%;
    animation: auth-overlay-spin 0.9s linear infinite;
}

.auth-overlay-text {
    margin: 0;
    color: var(--auth-text-primary);
    font-size: 1.125rem;
    font-weight: 600;
}

.auth-overlay-subtext {
    margin: 0;
    color: var(--auth-text-secondary);
    font-size: 0.95rem;
}

.auth-overlay--dashboard {
    z-index: 3000;
}

.login-form-loading {
    pointer-events: none;
}

@keyframes auth-overlay-spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes auth-overlay-float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-6px);
    }
}